Merge
This commit is contained in:
Tim Bell
commit
f98b97ffea
@ -250,6 +250,8 @@ JAVA_JAVA_java = \
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java/util/IdentityHashMap.java \
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java/util/EnumMap.java \
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java/util/Arrays.java \
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java/util/TimSort.java \
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java/util/ComparableTimSort.java \
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java/util/ConcurrentModificationException.java \
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java/util/ServiceLoader.java \
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java/util/ServiceConfigurationError.java \
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@ -1 +1,187 @@
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0x15 U+0085
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#
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# The diff of 01A434B0.TXMAP110 and 34B001A4.RXMAP110
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#
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# Added: 0x15 U+0085
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#
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0x15 U+0085
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||||
0x42 U+FE7C
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0x46 U+FE80
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0x47 U+FE81
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0x49 U+FE83
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0x4B U+066C
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0x4B U+FF0E
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0x4F U+FF5C
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0x52 U+FE85
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0x52 U+FE86
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0x55 U+FE89
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0x55 U+FE8A
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0x55 U+FE8B
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0x55 U+FE8C
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0x56 U+0625
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0x56 U+FE87
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0x56 U+FE8D
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0x57 U+FE88
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0x58 U+FE8F
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0x58 U+FE90
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0x59 U+FE92
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0x5A U+FF01
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0x5B U+FF04
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0x5C U+066D
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0x5C U+FF0A
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0x5D U+FF09
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0x5E U+FF1B
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0x60 U+FF0D
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0x61 U+FF0F
|
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0x62 U+FE93
|
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0x62 U+FE94
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0x63 U+FE95
|
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0x63 U+FE96
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0x64 U+FE98
|
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0x65 U+FE99
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0x65 U+FE9A
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0x66 U+FE9C
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0x67 U+FE9D
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0x67 U+FE9E
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0x68 U+FEA0
|
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0x69 U+FEA1
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||||
0x69 U+FEA2
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0x6B U+066B
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0x6B U+FF0C
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0x6C U+066A
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0x6C U+FF05
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0x6D U+FF3F
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0x6E U+FF1E
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0x6F U+FF1F
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0x70 U+FEA4
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0x71 U+FEA5
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0x71 U+FEA6
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0x72 U+FEA8
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0x73 U+FEA9
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0x73 U+FEAA
|
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0x74 U+FEAB
|
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0x74 U+FEAC
|
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0x75 U+FEAD
|
||||
0x75 U+FEAE
|
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0x76 U+FEAF
|
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0x76 U+FEB0
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0x77 U+FEB1
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0x77 U+FEB2
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0x78 U+FEB4
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0x7A U+FF1A
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0x7B U+FF03
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0x7C U+FF20
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0x7D U+FF07
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0x7E U+FF1D
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0x7F U+FF02
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0x80 U+FEB5
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0x80 U+FEB6
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0x81 U+FF41
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||||
0x82 U+FF42
|
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0x83 U+FF43
|
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0x84 U+FF44
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0x85 U+FF45
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0x86 U+FF46
|
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0x87 U+FF47
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0x88 U+FF48
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0x89 U+FF49
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0x8A U+FEB8
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0x8B U+FEB9
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0x8B U+FEBA
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0x8C U+FEBC
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0x8D U+FEBD
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0x8D U+FEBE
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0x8E U+FEC0
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0x8F U+FEC1
|
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0x8F U+FEC2
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0x8F U+FEC3
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0x8F U+FEC4
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0x90 U+FEC5
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0x90 U+FEC7
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0x90 U+FEC8
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0x91 U+FF4A
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0x92 U+FF4B
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0x93 U+FF4C
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0x94 U+FF4D
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0x95 U+FF4E
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0x96 U+FF4F
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0x97 U+FF50
|
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0x98 U+FF51
|
||||
0x99 U+FF52
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0x9A U+FEC9
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0x9E U+FECD
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0xA2 U+FF53
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0xA3 U+FF54
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||||
0xA4 U+FF55
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0xA5 U+FF56
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0xA6 U+FF57
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0xA7 U+FF58
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0xA8 U+FF59
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0xA9 U+FF5A
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0xAB U+FED1
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0xAB U+FED2
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0xAC U+FED4
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0xAD U+FED5
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||||
0xAD U+FED6
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||||
0xAE U+FED8
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||||
0xAF U+FED9
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||||
0xAF U+FEDA
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0xB0 U+FEDC
|
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0xB1 U+FEDD
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0xB1 U+FEDE
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||||
0xB8 U+FEF9
|
||||
0xB9 U+FEFA
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0xBA U+FEE0
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||||
0xBB U+FEE1
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||||
0xBB U+FEE2
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0xBC U+FEE4
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||||
0xBD U+FEE5
|
||||
0xBD U+FEE6
|
||||
0xBE U+FEE8
|
||||
0xBF U+FEE9
|
||||
0xBF U+FEEA
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0xC1 U+FF21
|
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0xC2 U+FF22
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0xC3 U+FF23
|
||||
0xC4 U+FF24
|
||||
0xC5 U+FF25
|
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0xC6 U+FF26
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0xC7 U+FF27
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0xC8 U+FF28
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0xC9 U+FF29
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0xCF U+FEED
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0xCF U+FEEE
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0xD1 U+FF2A
|
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0xD2 U+FF2B
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0xD3 U+FF2C
|
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0xD4 U+FF2D
|
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0xD5 U+FF2E
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0xD6 U+FF2F
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0xD7 U+FF30
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0xD8 U+FF31
|
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0xD9 U+FF32
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0xDA U+FEEF
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0xDC U+FEF1
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0xDE U+FEF4
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0xE2 U+FF33
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0xE3 U+FF34
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0xE4 U+FF35
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0xE5 U+FF36
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0xE6 U+FF37
|
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0xE7 U+FF38
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0xE8 U+FF39
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0xE9 U+FF3A
|
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0xF0 U+FF10
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0xF1 U+FF11
|
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0xF2 U+FF12
|
||||
0xF3 U+FF13
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||||
0xF4 U+FF14
|
||||
0xF5 U+FF15
|
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0xF6 U+FF16
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0xF7 U+FF17
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0xF8 U+FF18
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0xF9 U+FF19
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|
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@ -1,257 +1,253 @@
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#Generated from IBM420.java
|
||||
0x00 U+0000
|
||||
0x01 U+0001
|
||||
0x02 U+0002
|
||||
0x03 U+0003
|
||||
0x04 U+009c
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||||
0x05 U+0009
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||||
0x06 U+0086
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||||
0x07 U+007f
|
||||
0x08 U+0097
|
||||
0x09 U+008d
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||||
0x0a U+008e
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||||
0x0b U+000b
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||||
0x0c U+000c
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||||
0x0d U+000d
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||||
0x0e U+000e
|
||||
0x0f U+000f
|
||||
0x10 U+0010
|
||||
0x11 U+0011
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||||
0x12 U+0012
|
||||
0x13 U+0013
|
||||
0x14 U+009d
|
||||
0x15 U+000a
|
||||
0x16 U+0008
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||||
0x17 U+0087
|
||||
0x18 U+0018
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||||
0x19 U+0019
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||||
0x1a U+0092
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||||
0x1b U+008f
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0x1c U+001c
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||||
0x1d U+001d
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0x1e U+001e
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||||
0x1f U+001f
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||||
0x20 U+0080
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||||
0x21 U+0081
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||||
0x22 U+0082
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0x23 U+0083
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||||
0x24 U+0084
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||||
0x25 U+000a
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||||
0x26 U+0017
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||||
0x27 U+001b
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||||
0x28 U+0088
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||||
0x29 U+0089
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0x2a U+008a
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0x2b U+008b
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||||
0x2c U+008c
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||||
0x2d U+0005
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||||
0x2e U+0006
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0x2f U+0007
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0x30 U+0090
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0x31 U+0091
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0x32 U+0016
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0x33 U+0093
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||||
0x34 U+0094
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0x35 U+0095
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0x36 U+0096
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||||
0x37 U+0004
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||||
0x38 U+0098
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||||
0x39 U+0099
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0x3a U+009a
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0x3b U+009b
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0x3c U+0014
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||||
0x3d U+0015
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||||
0x3e U+009e
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||||
0x3f U+001a
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0x40 U+0020
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0x41 U+00a0
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||||
0x42 U+fe7c
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||||
0x43 U+fe7d
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||||
0x44 U+0640
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||||
0x45 U+f8fc
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||||
0x46 U+fe80
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||||
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0x48 U+fe82
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0x4c U+003c
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0x4d U+0028
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0x50 U+0026
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0x59 U+fe91
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0x5a U+0021
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0x5b U+0024
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0x5c U+002a
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0x5d U+0029
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0x5e U+003b
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0x62 U+fe93
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0x6a U+00a6
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0x6b U+002c
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0x6c U+0025
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0x6d U+005f
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0x6e U+003e
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0x6f U+003f
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0x70 U+fea3
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0x71 U+fea5
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0x72 U+fea7
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0x73 U+fea9
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0x74 U+feab
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0x75 U+fead
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0x76 U+feaf
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0x77 U+f8f6
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0x78 U+feb3
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0x79 U+060c
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0x7a U+003a
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0x7b U+0023
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0x7c U+0040
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0x7d U+0027
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0x7e U+003d
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0x7f U+0022
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0x80 U+f8f5
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0x81 U+0061
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0x82 U+0062
|
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0x83 U+0063
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0x84 U+0064
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0x85 U+0065
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0x86 U+0066
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0x87 U+0067
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0x88 U+0068
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0x89 U+0069
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0x8a U+feb7
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0x8b U+f8f4
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0x8c U+febb
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0x8d U+f8f7
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0x8e U+febf
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0x8f U+fec3
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0x90 U+fec7
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0x91 U+006a
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0x92 U+006b
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0x93 U+006c
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0x94 U+006d
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0x95 U+006e
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0x96 U+006f
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0x97 U+0070
|
||||
0x98 U+0071
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0x99 U+0072
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0x9a U+fec9
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||||
0x9b U+feca
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0x9c U+fecb
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0x9d U+fecc
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0x9e U+fecd
|
||||
0x9f U+fece
|
||||
0xa0 U+fecf
|
||||
0xa1 U+00f7
|
||||
0xa2 U+0073
|
||||
0xa3 U+0074
|
||||
0xa4 U+0075
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||||
0xa5 U+0076
|
||||
0xa6 U+0077
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||||
0xa7 U+0078
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||||
0xa8 U+0079
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0xa9 U+007a
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0xaa U+fed0
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0xab U+fed1
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0xac U+fed3
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0xad U+fed5
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0xae U+fed7
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0xaf U+fed9
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0xb0 U+fedb
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0xb1 U+fedd
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0xb2 U+fef5
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0xb3 U+fef6
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0xb4 U+fef7
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0xb5 U+fef8
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0xb6 U+fffd
|
||||
0xb7 U+fffd
|
||||
0xb8 U+fefb
|
||||
0xb9 U+fefc
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||||
0xba U+fedf
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||||
0xbb U+fee1
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||||
0xbc U+fee3
|
||||
0xbd U+fee5
|
||||
0xbe U+fee7
|
||||
0xbf U+fee9
|
||||
0xc0 U+061b
|
||||
0xc1 U+0041
|
||||
0xc2 U+0042
|
||||
0xc3 U+0043
|
||||
0xc4 U+0044
|
||||
0xc5 U+0045
|
||||
0xc6 U+0046
|
||||
0xc7 U+0047
|
||||
0xc8 U+0048
|
||||
0xc9 U+0049
|
||||
0xca U+00ad
|
||||
0xcb U+feeb
|
||||
0xcc U+fffd
|
||||
0xcd U+feec
|
||||
0xce U+fffd
|
||||
0xcf U+feed
|
||||
0xd0 U+061f
|
||||
0xd1 U+004a
|
||||
0xd2 U+004b
|
||||
0xd3 U+004c
|
||||
0xd4 U+004d
|
||||
0xd5 U+004e
|
||||
0xd6 U+004f
|
||||
0xd7 U+0050
|
||||
0xd8 U+0051
|
||||
0xd9 U+0052
|
||||
0xda U+feef
|
||||
0xdb U+fef0
|
||||
0xdc U+fef1
|
||||
0xdd U+fef2
|
||||
0xde U+fef3
|
||||
0xdf U+0660
|
||||
0xe0 U+00d7
|
||||
0xe1 U+2007
|
||||
0xe2 U+0053
|
||||
0xe3 U+0054
|
||||
0xe4 U+0055
|
||||
0xe5 U+0056
|
||||
0xe6 U+0057
|
||||
0xe7 U+0058
|
||||
0xe8 U+0059
|
||||
0xe9 U+005a
|
||||
0xea U+0661
|
||||
0xeb U+0662
|
||||
0xec U+fffd
|
||||
0xed U+0663
|
||||
0xee U+0664
|
||||
0xef U+0665
|
||||
0xf0 U+0030
|
||||
0xf1 U+0031
|
||||
0xf2 U+0032
|
||||
0xf3 U+0033
|
||||
0xf4 U+0034
|
||||
0xf5 U+0035
|
||||
0xf6 U+0036
|
||||
0xf7 U+0037
|
||||
0xf8 U+0038
|
||||
0xf9 U+0039
|
||||
0xfa U+fffd
|
||||
0xfb U+0666
|
||||
0xfc U+0667
|
||||
0xfd U+0668
|
||||
0xfe U+0669
|
||||
0xff U+009f
|
||||
#
|
||||
# Frm IBMCDC datatable 01A434B0.TXMAP110
|
||||
#
|
||||
# Changed
|
||||
# 0x15 U+0085 -> 0x15 U+000a
|
||||
#
|
||||
0x00 U+0000
|
||||
0x01 U+0001
|
||||
0x02 U+0002
|
||||
0x03 U+0003
|
||||
0x04 U+009C
|
||||
0x05 U+0009
|
||||
0x06 U+0086
|
||||
0x07 U+007F
|
||||
0x08 U+0097
|
||||
0x09 U+008D
|
||||
0x0A U+008E
|
||||
0x0B U+000B
|
||||
0x0C U+000C
|
||||
0x0D U+000D
|
||||
0x0E U+000E
|
||||
0x0F U+000F
|
||||
0x10 U+0010
|
||||
0x11 U+0011
|
||||
0x12 U+0012
|
||||
0x13 U+0013
|
||||
0x14 U+009D
|
||||
0x15 U+000A
|
||||
0x16 U+0008
|
||||
0x17 U+0087
|
||||
0x18 U+0018
|
||||
0x19 U+0019
|
||||
0x1A U+0092
|
||||
0x1B U+008F
|
||||
0x1C U+001C
|
||||
0x1D U+001D
|
||||
0x1E U+001E
|
||||
0x1F U+001F
|
||||
0x20 U+0080
|
||||
0x21 U+0081
|
||||
0x22 U+0082
|
||||
0x23 U+0083
|
||||
0x24 U+0084
|
||||
0x25 U+000A
|
||||
0x26 U+0017
|
||||
0x27 U+001B
|
||||
0x28 U+0088
|
||||
0x29 U+0089
|
||||
0x2A U+008A
|
||||
0x2B U+008B
|
||||
0x2C U+008C
|
||||
0x2D U+0005
|
||||
0x2E U+0006
|
||||
0x2F U+0007
|
||||
0x30 U+0090
|
||||
0x31 U+0091
|
||||
0x32 U+0016
|
||||
0x33 U+0093
|
||||
0x34 U+0094
|
||||
0x35 U+0095
|
||||
0x36 U+0096
|
||||
0x37 U+0004
|
||||
0x38 U+0098
|
||||
0x39 U+0099
|
||||
0x3A U+009A
|
||||
0x3B U+009B
|
||||
0x3C U+0014
|
||||
0x3D U+0015
|
||||
0x3E U+009E
|
||||
0x3F U+001A
|
||||
0x40 U+0020
|
||||
0x41 U+00A0
|
||||
0x42 U+0651
|
||||
0x43 U+FE7D
|
||||
0x44 U+0640
|
||||
0x45 U+200B
|
||||
0x46 U+0621
|
||||
0x47 U+0622
|
||||
0x48 U+FE82
|
||||
0x49 U+0623
|
||||
0x4A U+00A2
|
||||
0x4B U+002E
|
||||
0x4C U+003C
|
||||
0x4D U+0028
|
||||
0x4E U+002B
|
||||
0x4F U+007C
|
||||
0x50 U+0026
|
||||
0x51 U+FE84
|
||||
0x52 U+0624
|
||||
0x55 U+0626
|
||||
0x56 U+0627
|
||||
0x57 U+FE8E
|
||||
0x58 U+0628
|
||||
0x59 U+FE91
|
||||
0x5A U+0021
|
||||
0x5B U+0024
|
||||
0x5C U+002A
|
||||
0x5D U+0029
|
||||
0x5E U+003B
|
||||
0x5F U+00AC
|
||||
0x60 U+002D
|
||||
0x61 U+002F
|
||||
0x62 U+0629
|
||||
0x63 U+062A
|
||||
0x64 U+FE97
|
||||
0x65 U+062B
|
||||
0x66 U+FE9B
|
||||
0x67 U+062C
|
||||
0x68 U+FE9F
|
||||
0x69 U+062D
|
||||
0x6A U+00A6
|
||||
0x6B U+002C
|
||||
0x6C U+0025
|
||||
0x6D U+005F
|
||||
0x6E U+003E
|
||||
0x6F U+003F
|
||||
0x70 U+FEA3
|
||||
0x71 U+062E
|
||||
0x72 U+FEA7
|
||||
0x73 U+062F
|
||||
0x74 U+0630
|
||||
0x75 U+0631
|
||||
0x76 U+0632
|
||||
0x77 U+0633
|
||||
0x78 U+FEB3
|
||||
0x79 U+060C
|
||||
0x7A U+003A
|
||||
0x7B U+0023
|
||||
0x7C U+0040
|
||||
0x7D U+0027
|
||||
0x7E U+003D
|
||||
0x7F U+0022
|
||||
0x80 U+0634
|
||||
0x81 U+0061
|
||||
0x82 U+0062
|
||||
0x83 U+0063
|
||||
0x84 U+0064
|
||||
0x85 U+0065
|
||||
0x86 U+0066
|
||||
0x87 U+0067
|
||||
0x88 U+0068
|
||||
0x89 U+0069
|
||||
0x8A U+FEB7
|
||||
0x8B U+0635
|
||||
0x8C U+FEBB
|
||||
0x8D U+0636
|
||||
0x8E U+FEBF
|
||||
0x8F U+0637
|
||||
0x90 U+0638
|
||||
0x91 U+006A
|
||||
0x92 U+006B
|
||||
0x93 U+006C
|
||||
0x94 U+006D
|
||||
0x95 U+006E
|
||||
0x96 U+006F
|
||||
0x97 U+0070
|
||||
0x98 U+0071
|
||||
0x99 U+0072
|
||||
0x9A U+0639
|
||||
0x9B U+FECA
|
||||
0x9C U+FECB
|
||||
0x9D U+FECC
|
||||
0x9E U+063A
|
||||
0x9F U+FECE
|
||||
0xA0 U+FECF
|
||||
0xA1 U+00F7
|
||||
0xA2 U+0073
|
||||
0xA3 U+0074
|
||||
0xA4 U+0075
|
||||
0xA5 U+0076
|
||||
0xA6 U+0077
|
||||
0xA7 U+0078
|
||||
0xA8 U+0079
|
||||
0xA9 U+007A
|
||||
0xAA U+FED0
|
||||
0xAB U+0641
|
||||
0xAC U+FED3
|
||||
0xAD U+0642
|
||||
0xAE U+FED7
|
||||
0xAF U+0643
|
||||
0xB0 U+FEDB
|
||||
0xB1 U+0644
|
||||
0xB2 U+FEF5
|
||||
0xB3 U+FEF6
|
||||
0xB4 U+FEF7
|
||||
0xB5 U+FEF8
|
||||
0xB8 U+FEFB
|
||||
0xB9 U+FEFC
|
||||
0xBA U+FEDF
|
||||
0xBB U+0645
|
||||
0xBC U+FEE3
|
||||
0xBD U+0646
|
||||
0xBE U+FEE7
|
||||
0xBF U+0647
|
||||
0xC0 U+061B
|
||||
0xC1 U+0041
|
||||
0xC2 U+0042
|
||||
0xC3 U+0043
|
||||
0xC4 U+0044
|
||||
0xC5 U+0045
|
||||
0xC6 U+0046
|
||||
0xC7 U+0047
|
||||
0xC8 U+0048
|
||||
0xC9 U+0049
|
||||
0xCA U+00AD
|
||||
0xCB U+FEEB
|
||||
0xCD U+FEEC
|
||||
0xCF U+0648
|
||||
0xD0 U+061F
|
||||
0xD1 U+004A
|
||||
0xD2 U+004B
|
||||
0xD3 U+004C
|
||||
0xD4 U+004D
|
||||
0xD5 U+004E
|
||||
0xD6 U+004F
|
||||
0xD7 U+0050
|
||||
0xD8 U+0051
|
||||
0xD9 U+0052
|
||||
0xDA U+0649
|
||||
0xDB U+FEF0
|
||||
0xDC U+064A
|
||||
0xDD U+FEF2
|
||||
0xDE U+FEF3
|
||||
0xDF U+0660
|
||||
0xE0 U+00D7
|
||||
0xE2 U+0053
|
||||
0xE3 U+0054
|
||||
0xE4 U+0055
|
||||
0xE5 U+0056
|
||||
0xE6 U+0057
|
||||
0xE7 U+0058
|
||||
0xE8 U+0059
|
||||
0xE9 U+005A
|
||||
0xEA U+0661
|
||||
0xEB U+0662
|
||||
0xED U+0663
|
||||
0xEE U+0664
|
||||
0xEF U+0665
|
||||
0xF0 U+0030
|
||||
0xF1 U+0031
|
||||
0xF2 U+0032
|
||||
0xF3 U+0033
|
||||
0xF4 U+0034
|
||||
0xF5 U+0035
|
||||
0xF6 U+0036
|
||||
0xF7 U+0037
|
||||
0xF8 U+0038
|
||||
0xF9 U+0039
|
||||
0xFB U+0666
|
||||
0xFC U+0667
|
||||
0xFD U+0668
|
||||
0xFE U+0669
|
||||
0xFF U+009F
|
||||
|
||||
@ -1 +1 @@
|
||||
0x25 U+000a
|
||||
0x25 U+000a
|
||||
|
||||
@ -26,6 +26,7 @@
|
||||
package build.tools.charsetmapping;
|
||||
|
||||
import java.io.*;
|
||||
import java.util.Arrays;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Scanner;
|
||||
import java.util.Formatter;
|
||||
@ -54,33 +55,19 @@ public class GenerateSBCS {
|
||||
String pkgName = fields[4];
|
||||
System.out.printf("%s,%s,%s,%b,%s%n", clzName, csName, hisName, isASCII, pkgName);
|
||||
|
||||
StringBuilder b2c = new StringBuilder();
|
||||
int c2bLen = genB2C(
|
||||
new FileInputStream(new File(args[0], clzName+".map")), b2c);
|
||||
|
||||
String b2cNR = null;
|
||||
File nrF = new File(args[0], clzName+".nr");
|
||||
if (nrF.exists()) {
|
||||
b2cNR = genNR(new FileInputStream(nrF));
|
||||
}
|
||||
|
||||
String c2bNR = null;
|
||||
File c2bF = new File(args[0], clzName+".c2b");
|
||||
if (c2bF.exists()) {
|
||||
c2bNR = genC2BNR(new FileInputStream(c2bF));
|
||||
}
|
||||
|
||||
genSBCSClass(args[0], args[1], "SingleByte-X.java",
|
||||
clzName, csName, hisName, pkgName, isASCII,
|
||||
b2c.toString(), b2cNR, c2bNR, c2bLen);
|
||||
genClass(args[0], args[1], "SingleByte-X.java",
|
||||
clzName, csName, hisName, pkgName, isASCII);
|
||||
}
|
||||
}
|
||||
|
||||
private static void toString(char[] sb, int off, int end,
|
||||
Formatter out, String closure) {
|
||||
Formatter out, String closure,
|
||||
boolean comment) {
|
||||
while (off < end) {
|
||||
out.format(" \"");
|
||||
for (int j = 0; j < 8; j++) {
|
||||
if (off == end)
|
||||
break;
|
||||
char c = sb[off++];
|
||||
switch (c) {
|
||||
case '\b':
|
||||
@ -103,101 +90,124 @@ public class GenerateSBCS {
|
||||
out.format("\\u%04X", c & 0xffff);
|
||||
}
|
||||
}
|
||||
if (off == end)
|
||||
out.format("\" %s // 0x%02x - 0x%02x%n", closure, off-8, off-1);
|
||||
else
|
||||
out.format("\" + // 0x%02x - 0x%02x%n", off-8, off-1);
|
||||
if (comment) {
|
||||
if (off == end)
|
||||
out.format("\" %s // 0x%02x - 0x%02x%n",
|
||||
closure, off-8, off-1);
|
||||
else
|
||||
out.format("\" + // 0x%02x - 0x%02x%n",
|
||||
off-8, off-1);
|
||||
} else {
|
||||
if (off == end)
|
||||
out.format("\"%s%n", closure);
|
||||
else
|
||||
out.format("\" +%n");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static Pattern sbmap = Pattern.compile("0x(\\p{XDigit}++)\\s++U\\+(\\p{XDigit}++)(\\s++#.*)?");
|
||||
private static int genB2C(InputStream in, StringBuilder out)
|
||||
|
||||
private static void genClass(String srcDir, String dstDir,
|
||||
String template,
|
||||
String clzName,
|
||||
String csName,
|
||||
String hisName,
|
||||
String pkgName,
|
||||
boolean isASCII)
|
||||
throws Exception
|
||||
{
|
||||
StringBuilder b2cSB = new StringBuilder();
|
||||
StringBuilder b2cNRSB = new StringBuilder();
|
||||
StringBuilder c2bNRSB = new StringBuilder();
|
||||
|
||||
char[] sb = new char[0x100];
|
||||
int[] indexC2B = new int[0x100];
|
||||
char[] c2bIndex = new char[0x100];
|
||||
int c2bOff = 0;
|
||||
Arrays.fill(sb, UNMAPPABLE_DECODING);
|
||||
Arrays.fill(c2bIndex, UNMAPPABLE_DECODING);
|
||||
|
||||
for (int i = 0; i < sb.length; i++)
|
||||
sb[i] = UNMAPPABLE_DECODING;
|
||||
|
||||
// parse the b2c mapping table
|
||||
// (1)read in .map to parse all b->c entries
|
||||
FileInputStream in = new FileInputStream(
|
||||
new File(srcDir, clzName + ".map"));
|
||||
Parser p = new Parser(in, sbmap);
|
||||
Entry e = null;
|
||||
int off = 0;
|
||||
|
||||
while ((e = p.next()) != null) {
|
||||
sb[e.bs] = (char)e.cp;
|
||||
if (indexC2B[e.cp>>8] == 0) {
|
||||
off += 0x100;
|
||||
indexC2B[e.cp>>8] = 1;
|
||||
if (c2bIndex[e.cp>>8] == UNMAPPABLE_DECODING) {
|
||||
c2bOff += 0x100;
|
||||
c2bIndex[e.cp>>8] = 1;
|
||||
}
|
||||
}
|
||||
|
||||
Formatter fm = new Formatter(out);
|
||||
Formatter fm = new Formatter(b2cSB);
|
||||
fm.format("%n");
|
||||
|
||||
// vm -server shows cc[byte + 128] access is much faster than
|
||||
// cc[byte&0xff] so we output the upper segment first
|
||||
toString(sb, 0x80, 0x100, fm, "+");
|
||||
toString(sb, 0x00, 0x80, fm, ";");
|
||||
|
||||
toString(sb, 0x80, 0x100, fm, "+", true);
|
||||
toString(sb, 0x00, 0x80, fm, ";", true);
|
||||
fm.close();
|
||||
return off;
|
||||
}
|
||||
|
||||
// generate non-roundtrip entries from xxx.nr file
|
||||
private static String genNR(InputStream in) throws Exception
|
||||
{
|
||||
StringBuilder sb = new StringBuilder();
|
||||
Formatter fm = new Formatter(sb);
|
||||
Parser p = new Parser(in, sbmap);
|
||||
Entry e = null;
|
||||
fm.format("// remove non-roundtrip entries%n");
|
||||
fm.format(" b2cMap = b2cTable.toCharArray();%n");
|
||||
while ((e = p.next()) != null) {
|
||||
fm.format(" b2cMap[%d] = UNMAPPABLE_DECODING;%n",
|
||||
(e.bs>=0x80)?(e.bs-0x80):(e.bs+0x80));
|
||||
}
|
||||
fm.close();
|
||||
return sb.toString();
|
||||
}
|
||||
// (2)now the .nr file which includes "b->c" non-roundtrip entries
|
||||
File f = new File(srcDir, clzName + ".nr");
|
||||
if (f.exists()) {
|
||||
in = new FileInputStream(f);
|
||||
fm = new Formatter(b2cNRSB);
|
||||
p = new Parser(in, sbmap);
|
||||
e = null;
|
||||
|
||||
// generate c2b only entries from xxx.c2b file
|
||||
private static String genC2BNR(InputStream in) throws Exception
|
||||
{
|
||||
StringBuilder sb = new StringBuilder();
|
||||
Formatter fm = new Formatter(sb);
|
||||
Parser p = new Parser(in, sbmap);
|
||||
ArrayList<Entry> es = new ArrayList<Entry>();
|
||||
Entry e = null;
|
||||
while ((e = p.next()) != null) {
|
||||
es.add(e);
|
||||
fm.format("// remove non-roundtrip entries%n");
|
||||
fm.format(" b2cMap = b2cTable.toCharArray();%n");
|
||||
while ((e = p.next()) != null) {
|
||||
fm.format(" b2cMap[%d] = UNMAPPABLE_DECODING;%n",
|
||||
(e.bs>=0x80)?(e.bs-0x80):(e.bs+0x80));
|
||||
}
|
||||
fm.close();
|
||||
}
|
||||
|
||||
fm.format("// non-roundtrip c2b only entries%n");
|
||||
fm.format(" c2bNR = new char[%d];%n", es.size() * 2);
|
||||
int i = 0;
|
||||
for (Entry entry: es) {
|
||||
fm.format(" c2bNR[%d] = 0x%x; c2bNR[%d] = 0x%x;%n",
|
||||
i++, entry.bs, i++, entry.cp);
|
||||
// (3)finally the .c2b file which includes c->b non-roundtrip entries
|
||||
f = new File(srcDir, clzName + ".c2b");
|
||||
if (f.exists()) {
|
||||
in = new FileInputStream(f);
|
||||
fm = new Formatter(c2bNRSB);
|
||||
p = new Parser(in, sbmap);
|
||||
e = null;
|
||||
ArrayList<Entry> es = new ArrayList<Entry>();
|
||||
while ((e = p.next()) != null) {
|
||||
if (c2bIndex[e.cp>>8] == UNMAPPABLE_DECODING) {
|
||||
c2bOff += 0x100;
|
||||
c2bIndex[e.cp>>8] = 1;
|
||||
}
|
||||
es.add(e);
|
||||
}
|
||||
fm.format("// non-roundtrip c2b only entries%n");
|
||||
if (es.size() < 100) {
|
||||
fm.format(" c2bNR = new char[%d];%n", es.size() * 2);
|
||||
int i = 0;
|
||||
for (Entry entry: es) {
|
||||
fm.format(" c2bNR[%d] = 0x%x; c2bNR[%d] = 0x%x;%n",
|
||||
i++, entry.bs, i++, entry.cp);
|
||||
}
|
||||
} else {
|
||||
char[] cc = new char[es.size() * 2];
|
||||
int i = 0;
|
||||
for (Entry entry: es) {
|
||||
cc[i++] = (char)entry.bs;
|
||||
cc[i++] = (char)entry.cp;
|
||||
}
|
||||
fm.format(" c2bNR = (%n");
|
||||
toString(cc, 0, i, fm, ").toCharArray();", false);
|
||||
}
|
||||
fm.close();
|
||||
}
|
||||
fm.close();
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
private static void genSBCSClass(String srcDir,
|
||||
String dstDir,
|
||||
String template,
|
||||
String clzName,
|
||||
String csName,
|
||||
String hisName,
|
||||
String pkgName,
|
||||
boolean isASCII,
|
||||
String b2c,
|
||||
String b2cNR,
|
||||
String c2bNR,
|
||||
int c2blen)
|
||||
throws Exception
|
||||
{
|
||||
// (4)it's time to generate the source file
|
||||
String b2c = b2cSB.toString();
|
||||
String b2cNR = b2cNRSB.toString();
|
||||
String c2bNR = c2bNRSB.toString();
|
||||
|
||||
Scanner s = new Scanner(new File(srcDir, template));
|
||||
PrintStream out = new PrintStream(new FileOutputStream(
|
||||
new File(dstDir, clzName + ".java")));
|
||||
@ -239,16 +249,16 @@ public class GenerateSBCS {
|
||||
line = line.replace("$B2CTABLE$", b2c);
|
||||
}
|
||||
if (line.indexOf("$C2BLENGTH$") != -1) {
|
||||
line = line.replace("$C2BLENGTH$", "0x" + Integer.toString(c2blen, 16));
|
||||
line = line.replace("$C2BLENGTH$", "0x" + Integer.toString(c2bOff, 16));
|
||||
}
|
||||
if (line.indexOf("$NONROUNDTRIP_B2C$") != -1) {
|
||||
if (b2cNR == null)
|
||||
if (b2cNR.length() == 0)
|
||||
continue;
|
||||
line = line.replace("$NONROUNDTRIP_B2C$", b2cNR);
|
||||
}
|
||||
|
||||
if (line.indexOf("$NONROUNDTRIP_C2B$") != -1) {
|
||||
if (c2bNR == null)
|
||||
if (c2bNR.length() == 0)
|
||||
continue;
|
||||
line = line.replace("$NONROUNDTRIP_C2B$", c2bNR);
|
||||
}
|
||||
|
||||
@ -421,7 +421,7 @@ public abstract class DatagramChannel
|
||||
* invocation of this method will block until the first operation is
|
||||
* complete. If this channel's socket is not bound then this method will
|
||||
* first cause the socket to be bound to an address that is assigned
|
||||
* automatically, as if by invoking the {@link #bind bind) method with a
|
||||
* automatically, as if by invoking the {@link #bind bind} method with a
|
||||
* parameter of {@code null}. </p>
|
||||
*
|
||||
* @param src
|
||||
|
||||
@ -115,8 +115,8 @@
|
||||
* <td>Reads, writes, maps, and manipulates files</td></tr>
|
||||
* <tr><td valign=top><tt>{@link java.nio.channels.FileLock}</tt></td>
|
||||
* <td>A lock on a (region of a) file</td></tr>
|
||||
* <tr><td valign=top><tt>{@link java.nio.MappedByteBuffer}/{@link java.nio.MappedBigByteBuffer} </tt></td>
|
||||
* <td>A direct byte buffer or big byte buffer mapped to a region of a file</td></tr>
|
||||
* <tr><td valign=top><tt>{@link java.nio.MappedByteBuffer} </tt></td>
|
||||
* <td>A direct byte buffer mapped to a region of a file</td></tr>
|
||||
* </table></blockquote>
|
||||
*
|
||||
* <p> The {@link java.nio.channels.FileChannel} class supports the usual
|
||||
|
||||
@ -53,7 +53,7 @@ import java.io.IOException;
|
||||
* invoking the {@link #close close} method. Closing the directory stream
|
||||
* releases any resources associated with the stream. Once a directory stream
|
||||
* is closed, all further method invocations on the iterator throw {@link
|
||||
* java.util.concurrent.ConcurrentModificationException} with cause {@link
|
||||
* java.util.ConcurrentModificationException} with cause {@link
|
||||
* ClosedDirectoryStreamException}.
|
||||
*
|
||||
* <p> A directory stream is not required to be <i>asynchronously closeable</i>.
|
||||
|
||||
@ -987,7 +987,7 @@ public abstract class Path
|
||||
* exception then it is propogated to the iterator's {@link Iterator#hasNext()
|
||||
* hasNext} or {@link Iterator#next() next} method. Where an {@code
|
||||
* IOException} is thrown, it is propogated as a {@link
|
||||
* java.util.concurrent.ConcurrentModificationException} with the {@code
|
||||
* java.util.ConcurrentModificationException} with the {@code
|
||||
* IOException} as the cause.
|
||||
*
|
||||
* <p> When an implementation supports operations on entries in the
|
||||
|
||||
@ -102,9 +102,9 @@
|
||||
* <p><li> The {@link java.nio.file.attribute.UserPrincipalLookupService}
|
||||
* interface defines methods to lookup user or group principals. </li>
|
||||
*
|
||||
* <p><li> The {@link java.nio.file.attribute.Attribute} interface
|
||||
* <p><li> The {@link java.nio.file.attribute.FileAttribute} interface
|
||||
* represents the value of an attribute for cases where the attribute value is
|
||||
* require to be set atomically when creating an object in the file system. </li>
|
||||
* required to be set atomically when creating an object in the file system. </li>
|
||||
*
|
||||
* </ul>
|
||||
*
|
||||
|
||||
@ -1065,29 +1065,103 @@ public class Arrays {
|
||||
(x[b] > x[c] ? b : x[a] > x[c] ? c : a));
|
||||
}
|
||||
|
||||
/**
|
||||
* Old merge sort implementation can be selected (for
|
||||
* compatibility with broken comparators) using a system property.
|
||||
* Cannot be a static boolean in the enclosing class due to
|
||||
* circular dependencies. To be removed in a future release.
|
||||
*/
|
||||
static final class LegacyMergeSort {
|
||||
private static final boolean userRequested =
|
||||
java.security.AccessController.doPrivileged(
|
||||
new sun.security.action.GetBooleanAction(
|
||||
"java.util.Arrays.useLegacyMergeSort")).booleanValue();
|
||||
}
|
||||
|
||||
/*
|
||||
* If this platform has an optimizing VM, check whether ComparableTimSort
|
||||
* offers any performance benefit over TimSort in conjunction with a
|
||||
* comparator that returns:
|
||||
* {@code ((Comparable)first).compareTo(Second)}.
|
||||
* If not, you are better off deleting ComparableTimSort to
|
||||
* eliminate the code duplication. In other words, the commented
|
||||
* out code below is the preferable implementation for sorting
|
||||
* arrays of Comparables if it offers sufficient performance.
|
||||
*/
|
||||
|
||||
// /**
|
||||
// * A comparator that implements the natural ordering of a group of
|
||||
// * mutually comparable elements. Using this comparator saves us
|
||||
// * from duplicating most of the code in this file (one version for
|
||||
// * Comparables, one for explicit Comparators).
|
||||
// */
|
||||
// private static final Comparator<Object> NATURAL_ORDER =
|
||||
// new Comparator<Object>() {
|
||||
// @SuppressWarnings("unchecked")
|
||||
// public int compare(Object first, Object second) {
|
||||
// return ((Comparable<Object>)first).compareTo(second);
|
||||
// }
|
||||
// };
|
||||
//
|
||||
// public static void sort(Object[] a) {
|
||||
// sort(a, 0, a.length, NATURAL_ORDER);
|
||||
// }
|
||||
//
|
||||
// public static void sort(Object[] a, int fromIndex, int toIndex) {
|
||||
// sort(a, fromIndex, toIndex, NATURAL_ORDER);
|
||||
// }
|
||||
|
||||
/**
|
||||
* Sorts the specified array of objects into ascending order, according to
|
||||
* the {@linkplain Comparable natural ordering}
|
||||
* of its elements. All elements in the array
|
||||
* must implement the {@link Comparable} interface. Furthermore, all
|
||||
* elements in the array must be <i>mutually comparable</i> (that is,
|
||||
* <tt>e1.compareTo(e2)</tt> must not throw a <tt>ClassCastException</tt>
|
||||
* for any elements <tt>e1</tt> and <tt>e2</tt> in the array).<p>
|
||||
* Sorts the specified array of objects into ascending order, according
|
||||
* to the {@linkplain Comparable natural ordering} of its elements.
|
||||
* All elements in the array must implement the {@link Comparable}
|
||||
* interface. Furthermore, all elements in the array must be
|
||||
* <i>mutually comparable</i> (that is, {@code e1.compareTo(e2)} must
|
||||
* not throw a {@code ClassCastException} for any elements {@code e1}
|
||||
* and {@code e2} in the array).
|
||||
*
|
||||
* This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.<p>
|
||||
* <p>This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.
|
||||
*
|
||||
* The sorting algorithm is a modified mergesort (in which the merge is
|
||||
* omitted if the highest element in the low sublist is less than the
|
||||
* lowest element in the high sublist). This algorithm offers guaranteed
|
||||
* n*log(n) performance.
|
||||
* <p>Implementation note: This implementation is a stable, adaptive,
|
||||
* iterative mergesort that requires far fewer than n lg(n) comparisons
|
||||
* when the input array is partially sorted, while offering the
|
||||
* performance of a traditional mergesort when the input array is
|
||||
* randomly ordered. If the input array is nearly sorted, the
|
||||
* implementation requires approximately n comparisons. Temporary
|
||||
* storage requirements vary from a small constant for nearly sorted
|
||||
* input arrays to n/2 object references for randomly ordered input
|
||||
* arrays.
|
||||
*
|
||||
* <p>The implementation takes equal advantage of ascending and
|
||||
* descending order in its input array, and can take advantage of
|
||||
* ascending and descending order in different parts of the the same
|
||||
* input array. It is well-suited to merging two or more sorted arrays:
|
||||
* simply concatenate the arrays and sort the resulting array.
|
||||
*
|
||||
* <p>The implementation was adapted from Tim Peters's list sort for Python
|
||||
* (<a href="http://svn.python.org/projects/python/trunk/Objects/listsort.txt">
|
||||
* TimSort</a>). It uses techiques from Peter McIlroy's "Optimistic
|
||||
* Sorting and Information Theoretic Complexity", in Proceedings of the
|
||||
* Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474,
|
||||
* January 1993.
|
||||
*
|
||||
* @param a the array to be sorted
|
||||
* @throws ClassCastException if the array contains elements that are not
|
||||
* <i>mutually comparable</i> (for example, strings and integers).
|
||||
* @throws ClassCastException if the array contains elements that are not
|
||||
* <i>mutually comparable</i> (for example, strings and integers)
|
||||
* @throws IllegalArgumentException (optional) if the natural
|
||||
* ordering of the array elements is found to violate the
|
||||
* {@link Comparable} contract
|
||||
*/
|
||||
public static void sort(Object[] a) {
|
||||
if (LegacyMergeSort.userRequested)
|
||||
legacyMergeSort(a);
|
||||
else
|
||||
ComparableTimSort.sort(a);
|
||||
}
|
||||
|
||||
/** To be removed in a future release. */
|
||||
private static void legacyMergeSort(Object[] a) {
|
||||
Object[] aux = a.clone();
|
||||
mergeSort(aux, a, 0, a.length, 0);
|
||||
}
|
||||
@ -1097,34 +1171,63 @@ public class Arrays {
|
||||
* ascending order, according to the
|
||||
* {@linkplain Comparable natural ordering} of its
|
||||
* elements. The range to be sorted extends from index
|
||||
* <tt>fromIndex</tt>, inclusive, to index <tt>toIndex</tt>, exclusive.
|
||||
* (If <tt>fromIndex==toIndex</tt>, the range to be sorted is empty.) All
|
||||
* {@code fromIndex}, inclusive, to index {@code toIndex}, exclusive.
|
||||
* (If {@code fromIndex==toIndex}, the range to be sorted is empty.) All
|
||||
* elements in this range must implement the {@link Comparable}
|
||||
* interface. Furthermore, all elements in this range must be <i>mutually
|
||||
* comparable</i> (that is, <tt>e1.compareTo(e2)</tt> must not throw a
|
||||
* <tt>ClassCastException</tt> for any elements <tt>e1</tt> and
|
||||
* <tt>e2</tt> in the array).<p>
|
||||
* comparable</i> (that is, {@code e1.compareTo(e2)} must not throw a
|
||||
* {@code ClassCastException} for any elements {@code e1} and
|
||||
* {@code e2} in the array).
|
||||
*
|
||||
* This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.<p>
|
||||
* <p>This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.
|
||||
*
|
||||
* The sorting algorithm is a modified mergesort (in which the merge is
|
||||
* omitted if the highest element in the low sublist is less than the
|
||||
* lowest element in the high sublist). This algorithm offers guaranteed
|
||||
* n*log(n) performance.
|
||||
* <p>Implementation note: This implementation is a stable, adaptive,
|
||||
* iterative mergesort that requires far fewer than n lg(n) comparisons
|
||||
* when the input array is partially sorted, while offering the
|
||||
* performance of a traditional mergesort when the input array is
|
||||
* randomly ordered. If the input array is nearly sorted, the
|
||||
* implementation requires approximately n comparisons. Temporary
|
||||
* storage requirements vary from a small constant for nearly sorted
|
||||
* input arrays to n/2 object references for randomly ordered input
|
||||
* arrays.
|
||||
*
|
||||
* <p>The implementation takes equal advantage of ascending and
|
||||
* descending order in its input array, and can take advantage of
|
||||
* ascending and descending order in different parts of the the same
|
||||
* input array. It is well-suited to merging two or more sorted arrays:
|
||||
* simply concatenate the arrays and sort the resulting array.
|
||||
*
|
||||
* <p>The implementation was adapted from Tim Peters's list sort for Python
|
||||
* (<a href="http://svn.python.org/projects/python/trunk/Objects/listsort.txt">
|
||||
* TimSort</a>). It uses techiques from Peter McIlroy's "Optimistic
|
||||
* Sorting and Information Theoretic Complexity", in Proceedings of the
|
||||
* Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474,
|
||||
* January 1993.
|
||||
*
|
||||
* @param a the array to be sorted
|
||||
* @param fromIndex the index of the first element (inclusive) to be
|
||||
* sorted
|
||||
* @param toIndex the index of the last element (exclusive) to be sorted
|
||||
* @throws IllegalArgumentException if <tt>fromIndex > toIndex</tt>
|
||||
* @throws ArrayIndexOutOfBoundsException if <tt>fromIndex < 0</tt> or
|
||||
* <tt>toIndex > a.length</tt>
|
||||
* @throws ClassCastException if the array contains elements that are
|
||||
* not <i>mutually comparable</i> (for example, strings and
|
||||
* integers).
|
||||
* @throws IllegalArgumentException if {@code fromIndex > toIndex} or
|
||||
* (optional) if the natural ordering of the array elements is
|
||||
* found to violate the {@link Comparable} contract
|
||||
* @throws ArrayIndexOutOfBoundsException if {@code fromIndex < 0} or
|
||||
* {@code toIndex > a.length}
|
||||
* @throws ClassCastException if the array contains elements that are
|
||||
* not <i>mutually comparable</i> (for example, strings and
|
||||
* integers).
|
||||
*/
|
||||
public static void sort(Object[] a, int fromIndex, int toIndex) {
|
||||
if (LegacyMergeSort.userRequested)
|
||||
legacyMergeSort(a, fromIndex, toIndex);
|
||||
else
|
||||
ComparableTimSort.sort(a, fromIndex, toIndex);
|
||||
}
|
||||
|
||||
/** To be removed in a future release. */
|
||||
private static void legacyMergeSort(Object[] a,
|
||||
int fromIndex, int toIndex) {
|
||||
rangeCheck(a.length, fromIndex, toIndex);
|
||||
Object[] aux = copyOfRange(a, fromIndex, toIndex);
|
||||
mergeSort(aux, a, fromIndex, toIndex, -fromIndex);
|
||||
@ -1133,6 +1236,7 @@ public class Arrays {
|
||||
/**
|
||||
* Tuning parameter: list size at or below which insertion sort will be
|
||||
* used in preference to mergesort or quicksort.
|
||||
* To be removed in a future release.
|
||||
*/
|
||||
private static final int INSERTIONSORT_THRESHOLD = 7;
|
||||
|
||||
@ -1142,6 +1246,7 @@ public class Arrays {
|
||||
* low is the index in dest to start sorting
|
||||
* high is the end index in dest to end sorting
|
||||
* off is the offset to generate corresponding low, high in src
|
||||
* To be removed in a future release.
|
||||
*/
|
||||
private static void mergeSort(Object[] src,
|
||||
Object[] dest,
|
||||
@ -1197,25 +1302,53 @@ public class Arrays {
|
||||
* Sorts the specified array of objects according to the order induced by
|
||||
* the specified comparator. All elements in the array must be
|
||||
* <i>mutually comparable</i> by the specified comparator (that is,
|
||||
* <tt>c.compare(e1, e2)</tt> must not throw a <tt>ClassCastException</tt>
|
||||
* for any elements <tt>e1</tt> and <tt>e2</tt> in the array).<p>
|
||||
* {@code c.compare(e1, e2)} must not throw a {@code ClassCastException}
|
||||
* for any elements {@code e1} and {@code e2} in the array).
|
||||
*
|
||||
* This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.<p>
|
||||
* <p>This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.
|
||||
*
|
||||
* The sorting algorithm is a modified mergesort (in which the merge is
|
||||
* omitted if the highest element in the low sublist is less than the
|
||||
* lowest element in the high sublist). This algorithm offers guaranteed
|
||||
* n*log(n) performance.
|
||||
* <p>Implementation note: This implementation is a stable, adaptive,
|
||||
* iterative mergesort that requires far fewer than n lg(n) comparisons
|
||||
* when the input array is partially sorted, while offering the
|
||||
* performance of a traditional mergesort when the input array is
|
||||
* randomly ordered. If the input array is nearly sorted, the
|
||||
* implementation requires approximately n comparisons. Temporary
|
||||
* storage requirements vary from a small constant for nearly sorted
|
||||
* input arrays to n/2 object references for randomly ordered input
|
||||
* arrays.
|
||||
*
|
||||
* <p>The implementation takes equal advantage of ascending and
|
||||
* descending order in its input array, and can take advantage of
|
||||
* ascending and descending order in different parts of the the same
|
||||
* input array. It is well-suited to merging two or more sorted arrays:
|
||||
* simply concatenate the arrays and sort the resulting array.
|
||||
*
|
||||
* <p>The implementation was adapted from Tim Peters's list sort for Python
|
||||
* (<a href="http://svn.python.org/projects/python/trunk/Objects/listsort.txt">
|
||||
* TimSort</a>). It uses techiques from Peter McIlroy's "Optimistic
|
||||
* Sorting and Information Theoretic Complexity", in Proceedings of the
|
||||
* Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474,
|
||||
* January 1993.
|
||||
*
|
||||
* @param a the array to be sorted
|
||||
* @param c the comparator to determine the order of the array. A
|
||||
* <tt>null</tt> value indicates that the elements'
|
||||
* {@code null} value indicates that the elements'
|
||||
* {@linkplain Comparable natural ordering} should be used.
|
||||
* @throws ClassCastException if the array contains elements that are
|
||||
* not <i>mutually comparable</i> using the specified comparator.
|
||||
* @throws ClassCastException if the array contains elements that are
|
||||
* not <i>mutually comparable</i> using the specified comparator
|
||||
* @throws IllegalArgumentException (optional) if the comparator is
|
||||
* found to violate the {@link Comparator} contract
|
||||
*/
|
||||
public static <T> void sort(T[] a, Comparator<? super T> c) {
|
||||
if (LegacyMergeSort.userRequested)
|
||||
legacyMergeSort(a, c);
|
||||
else
|
||||
TimSort.sort(a, c);
|
||||
}
|
||||
|
||||
/** To be removed in a future release. */
|
||||
private static <T> void legacyMergeSort(T[] a, Comparator<? super T> c) {
|
||||
T[] aux = a.clone();
|
||||
if (c==null)
|
||||
mergeSort(aux, a, 0, a.length, 0);
|
||||
@ -1226,36 +1359,65 @@ public class Arrays {
|
||||
/**
|
||||
* Sorts the specified range of the specified array of objects according
|
||||
* to the order induced by the specified comparator. The range to be
|
||||
* sorted extends from index <tt>fromIndex</tt>, inclusive, to index
|
||||
* <tt>toIndex</tt>, exclusive. (If <tt>fromIndex==toIndex</tt>, the
|
||||
* sorted extends from index {@code fromIndex}, inclusive, to index
|
||||
* {@code toIndex}, exclusive. (If {@code fromIndex==toIndex}, the
|
||||
* range to be sorted is empty.) All elements in the range must be
|
||||
* <i>mutually comparable</i> by the specified comparator (that is,
|
||||
* <tt>c.compare(e1, e2)</tt> must not throw a <tt>ClassCastException</tt>
|
||||
* for any elements <tt>e1</tt> and <tt>e2</tt> in the range).<p>
|
||||
* {@code c.compare(e1, e2)} must not throw a {@code ClassCastException}
|
||||
* for any elements {@code e1} and {@code e2} in the range).
|
||||
*
|
||||
* This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.<p>
|
||||
* <p>This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.
|
||||
*
|
||||
* The sorting algorithm is a modified mergesort (in which the merge is
|
||||
* omitted if the highest element in the low sublist is less than the
|
||||
* lowest element in the high sublist). This algorithm offers guaranteed
|
||||
* n*log(n) performance.
|
||||
* <p>Implementation note: This implementation is a stable, adaptive,
|
||||
* iterative mergesort that requires far fewer than n lg(n) comparisons
|
||||
* when the input array is partially sorted, while offering the
|
||||
* performance of a traditional mergesort when the input array is
|
||||
* randomly ordered. If the input array is nearly sorted, the
|
||||
* implementation requires approximately n comparisons. Temporary
|
||||
* storage requirements vary from a small constant for nearly sorted
|
||||
* input arrays to n/2 object references for randomly ordered input
|
||||
* arrays.
|
||||
*
|
||||
* <p>The implementation takes equal advantage of ascending and
|
||||
* descending order in its input array, and can take advantage of
|
||||
* ascending and descending order in different parts of the the same
|
||||
* input array. It is well-suited to merging two or more sorted arrays:
|
||||
* simply concatenate the arrays and sort the resulting array.
|
||||
*
|
||||
* <p>The implementation was adapted from Tim Peters's list sort for Python
|
||||
* (<a href="http://svn.python.org/projects/python/trunk/Objects/listsort.txt">
|
||||
* TimSort</a>). It uses techiques from Peter McIlroy's "Optimistic
|
||||
* Sorting and Information Theoretic Complexity", in Proceedings of the
|
||||
* Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474,
|
||||
* January 1993.
|
||||
*
|
||||
* @param a the array to be sorted
|
||||
* @param fromIndex the index of the first element (inclusive) to be
|
||||
* sorted
|
||||
* @param toIndex the index of the last element (exclusive) to be sorted
|
||||
* @param c the comparator to determine the order of the array. A
|
||||
* <tt>null</tt> value indicates that the elements'
|
||||
* {@code null} value indicates that the elements'
|
||||
* {@linkplain Comparable natural ordering} should be used.
|
||||
* @throws ClassCastException if the array contains elements that are not
|
||||
* <i>mutually comparable</i> using the specified comparator.
|
||||
* @throws IllegalArgumentException if <tt>fromIndex > toIndex</tt>
|
||||
* @throws ArrayIndexOutOfBoundsException if <tt>fromIndex < 0</tt> or
|
||||
* <tt>toIndex > a.length</tt>
|
||||
* @throws IllegalArgumentException if {@code fromIndex > toIndex} or
|
||||
* (optional) if the comparator is found to violate the
|
||||
* {@link Comparator} contract
|
||||
* @throws ArrayIndexOutOfBoundsException if {@code fromIndex < 0} or
|
||||
* {@code toIndex > a.length}
|
||||
*/
|
||||
public static <T> void sort(T[] a, int fromIndex, int toIndex,
|
||||
Comparator<? super T> c) {
|
||||
if (LegacyMergeSort.userRequested)
|
||||
legacyMergeSort(a, fromIndex, toIndex, c);
|
||||
else
|
||||
TimSort.sort(a, fromIndex, toIndex, c);
|
||||
}
|
||||
|
||||
/** To be removed in a future release. */
|
||||
private static <T> void legacyMergeSort(T[] a, int fromIndex, int toIndex,
|
||||
Comparator<? super T> c) {
|
||||
rangeCheck(a.length, fromIndex, toIndex);
|
||||
T[] aux = copyOfRange(a, fromIndex, toIndex);
|
||||
if (c==null)
|
||||
@ -1270,6 +1432,7 @@ public class Arrays {
|
||||
* low is the index in dest to start sorting
|
||||
* high is the end index in dest to end sorting
|
||||
* off is the offset into src corresponding to low in dest
|
||||
* To be removed in a future release.
|
||||
*/
|
||||
private static void mergeSort(Object[] src,
|
||||
Object[] dest,
|
||||
|
||||
@ -100,23 +100,42 @@ public class Collections {
|
||||
|
||||
/**
|
||||
* Sorts the specified list into ascending order, according to the
|
||||
* <i>natural ordering</i> of its elements. All elements in the list must
|
||||
* implement the <tt>Comparable</tt> interface. Furthermore, all elements
|
||||
* in the list must be <i>mutually comparable</i> (that is,
|
||||
* <tt>e1.compareTo(e2)</tt> must not throw a <tt>ClassCastException</tt>
|
||||
* for any elements <tt>e1</tt> and <tt>e2</tt> in the list).<p>
|
||||
* {@linkplain Comparable natural ordering} of its elements.
|
||||
* All elements in the list must implement the {@link Comparable}
|
||||
* interface. Furthermore, all elements in the list must be
|
||||
* <i>mutually comparable</i> (that is, {@code e1.compareTo(e2)}
|
||||
* must not throw a {@code ClassCastException} for any elements
|
||||
* {@code e1} and {@code e2} in the list).
|
||||
*
|
||||
* This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.<p>
|
||||
* <p>This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.
|
||||
*
|
||||
* The specified list must be modifiable, but need not be resizable.<p>
|
||||
* <p>The specified list must be modifiable, but need not be resizable.
|
||||
*
|
||||
* The sorting algorithm is a modified mergesort (in which the merge is
|
||||
* omitted if the highest element in the low sublist is less than the
|
||||
* lowest element in the high sublist). This algorithm offers guaranteed
|
||||
* n log(n) performance.
|
||||
* <p>Implementation note: This implementation is a stable, adaptive,
|
||||
* iterative mergesort that requires far fewer than n lg(n) comparisons
|
||||
* when the input array is partially sorted, while offering the
|
||||
* performance of a traditional mergesort when the input array is
|
||||
* randomly ordered. If the input array is nearly sorted, the
|
||||
* implementation requires approximately n comparisons. Temporary
|
||||
* storage requirements vary from a small constant for nearly sorted
|
||||
* input arrays to n/2 object references for randomly ordered input
|
||||
* arrays.
|
||||
*
|
||||
* This implementation dumps the specified list into an array, sorts
|
||||
* <p>The implementation takes equal advantage of ascending and
|
||||
* descending order in its input array, and can take advantage of
|
||||
* ascending and descending order in different parts of the the same
|
||||
* input array. It is well-suited to merging two or more sorted arrays:
|
||||
* simply concatenate the arrays and sort the resulting array.
|
||||
*
|
||||
* <p>The implementation was adapted from Tim Peters's list sort for Python
|
||||
* (<a href="http://svn.python.org/projects/python/trunk/Objects/listsort.txt">
|
||||
* TimSort</a>). It uses techiques from Peter McIlroy's "Optimistic
|
||||
* Sorting and Information Theoretic Complexity", in Proceedings of the
|
||||
* Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474,
|
||||
* January 1993.
|
||||
*
|
||||
* <p>This implementation dumps the specified list into an array, sorts
|
||||
* the array, and iterates over the list resetting each element
|
||||
* from the corresponding position in the array. This avoids the
|
||||
* n<sup>2</sup> log(n) performance that would result from attempting
|
||||
@ -126,8 +145,10 @@ public class Collections {
|
||||
* @throws ClassCastException if the list contains elements that are not
|
||||
* <i>mutually comparable</i> (for example, strings and integers).
|
||||
* @throws UnsupportedOperationException if the specified list's
|
||||
* list-iterator does not support the <tt>set</tt> operation.
|
||||
* @see Comparable
|
||||
* list-iterator does not support the {@code set} operation.
|
||||
* @throws IllegalArgumentException (optional) if the implementation
|
||||
* detects that the natural ordering of the list elements is
|
||||
* found to violate the {@link Comparable} contract
|
||||
*/
|
||||
public static <T extends Comparable<? super T>> void sort(List<T> list) {
|
||||
Object[] a = list.toArray();
|
||||
@ -143,19 +164,38 @@ public class Collections {
|
||||
* Sorts the specified list according to the order induced by the
|
||||
* specified comparator. All elements in the list must be <i>mutually
|
||||
* comparable</i> using the specified comparator (that is,
|
||||
* <tt>c.compare(e1, e2)</tt> must not throw a <tt>ClassCastException</tt>
|
||||
* for any elements <tt>e1</tt> and <tt>e2</tt> in the list).<p>
|
||||
* {@code c.compare(e1, e2)} must not throw a {@code ClassCastException}
|
||||
* for any elements {@code e1} and {@code e2} in the list).
|
||||
*
|
||||
* This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.<p>
|
||||
* <p>This sort is guaranteed to be <i>stable</i>: equal elements will
|
||||
* not be reordered as a result of the sort.
|
||||
*
|
||||
* The sorting algorithm is a modified mergesort (in which the merge is
|
||||
* omitted if the highest element in the low sublist is less than the
|
||||
* lowest element in the high sublist). This algorithm offers guaranteed
|
||||
* n log(n) performance.
|
||||
* <p>The specified list must be modifiable, but need not be resizable.
|
||||
*
|
||||
* The specified list must be modifiable, but need not be resizable.
|
||||
* This implementation dumps the specified list into an array, sorts
|
||||
* <p>Implementation note: This implementation is a stable, adaptive,
|
||||
* iterative mergesort that requires far fewer than n lg(n) comparisons
|
||||
* when the input array is partially sorted, while offering the
|
||||
* performance of a traditional mergesort when the input array is
|
||||
* randomly ordered. If the input array is nearly sorted, the
|
||||
* implementation requires approximately n comparisons. Temporary
|
||||
* storage requirements vary from a small constant for nearly sorted
|
||||
* input arrays to n/2 object references for randomly ordered input
|
||||
* arrays.
|
||||
*
|
||||
* <p>The implementation takes equal advantage of ascending and
|
||||
* descending order in its input array, and can take advantage of
|
||||
* ascending and descending order in different parts of the the same
|
||||
* input array. It is well-suited to merging two or more sorted arrays:
|
||||
* simply concatenate the arrays and sort the resulting array.
|
||||
*
|
||||
* <p>The implementation was adapted from Tim Peters's list sort for Python
|
||||
* (<a href="http://svn.python.org/projects/python/trunk/Objects/listsort.txt">
|
||||
* TimSort</a>). It uses techiques from Peter McIlroy's "Optimistic
|
||||
* Sorting and Information Theoretic Complexity", in Proceedings of the
|
||||
* Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474,
|
||||
* January 1993.
|
||||
*
|
||||
* <p>This implementation dumps the specified list into an array, sorts
|
||||
* the array, and iterates over the list resetting each element
|
||||
* from the corresponding position in the array. This avoids the
|
||||
* n<sup>2</sup> log(n) performance that would result from attempting
|
||||
@ -163,13 +203,14 @@ public class Collections {
|
||||
*
|
||||
* @param list the list to be sorted.
|
||||
* @param c the comparator to determine the order of the list. A
|
||||
* <tt>null</tt> value indicates that the elements' <i>natural
|
||||
* {@code null} value indicates that the elements' <i>natural
|
||||
* ordering</i> should be used.
|
||||
* @throws ClassCastException if the list contains elements that are not
|
||||
* <i>mutually comparable</i> using the specified comparator.
|
||||
* @throws UnsupportedOperationException if the specified list's
|
||||
* list-iterator does not support the <tt>set</tt> operation.
|
||||
* @see Comparator
|
||||
* list-iterator does not support the {@code set} operation.
|
||||
* @throws IllegalArgumentException (optional) if the comparator is
|
||||
* found to violate the {@link Comparator} contract
|
||||
*/
|
||||
public static <T> void sort(List<T> list, Comparator<? super T> c) {
|
||||
Object[] a = list.toArray();
|
||||
|
||||
895
jdk/src/share/classes/java/util/ComparableTimSort.java
Normal file
895
jdk/src/share/classes/java/util/ComparableTimSort.java
Normal file
@ -0,0 +1,895 @@
|
||||
/*
|
||||
* Copyright 2009 Google Inc. All Rights Reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation. Sun designates this
|
||||
* particular file as subject to the "Classpath" exception as provided
|
||||
* by Sun in the LICENSE file that accompanied this code.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
package java.util;
|
||||
|
||||
/**
|
||||
* This is a near duplicate of {@link TimSort}, modified for use with
|
||||
* arrays of objects that implement {@link Comparable}, instead of using
|
||||
* explicit comparators.
|
||||
*
|
||||
* <p>If you are using an optimizing VM, you may find that ComparableTimSort
|
||||
* offers no performance benefit over TimSort in conjunction with a
|
||||
* comparator that simply returns {@code ((Comparable)first).compareTo(Second)}.
|
||||
* If this is the case, you are better off deleting ComparableTimSort to
|
||||
* eliminate the code duplication. (See Arrays.java for details.)
|
||||
*
|
||||
* @author Josh Bloch
|
||||
*/
|
||||
class ComparableTimSort {
|
||||
/**
|
||||
* This is the minimum sized sequence that will be merged. Shorter
|
||||
* sequences will be lengthened by calling binarySort. If the entire
|
||||
* array is less than this length, no merges will be performed.
|
||||
*
|
||||
* This constant should be a power of two. It was 64 in Tim Peter's C
|
||||
* implementation, but 32 was empirically determined to work better in
|
||||
* this implementation. In the unlikely event that you set this constant
|
||||
* to be a number that's not a power of two, you'll need to change the
|
||||
* {@link #minRunLength} computation.
|
||||
*
|
||||
* If you decrease this constant, you must change the stackLen
|
||||
* computation in the TimSort constructor, or you risk an
|
||||
* ArrayOutOfBounds exception. See listsort.txt for a discussion
|
||||
* of the minimum stack length required as a function of the length
|
||||
* of the array being sorted and the minimum merge sequence length.
|
||||
*/
|
||||
private static final int MIN_MERGE = 32;
|
||||
|
||||
/**
|
||||
* The array being sorted.
|
||||
*/
|
||||
private final Object[] a;
|
||||
|
||||
/**
|
||||
* When we get into galloping mode, we stay there until both runs win less
|
||||
* often than MIN_GALLOP consecutive times.
|
||||
*/
|
||||
private static final int MIN_GALLOP = 7;
|
||||
|
||||
/**
|
||||
* This controls when we get *into* galloping mode. It is initialized
|
||||
* to MIN_GALLOP. The mergeLo and mergeHi methods nudge it higher for
|
||||
* random data, and lower for highly structured data.
|
||||
*/
|
||||
private int minGallop = MIN_GALLOP;
|
||||
|
||||
/**
|
||||
* Maximum initial size of tmp array, which is used for merging. The array
|
||||
* can grow to accommodate demand.
|
||||
*
|
||||
* Unlike Tim's original C version, we do not allocate this much storage
|
||||
* when sorting smaller arrays. This change was required for performance.
|
||||
*/
|
||||
private static final int INITIAL_TMP_STORAGE_LENGTH = 256;
|
||||
|
||||
/**
|
||||
* Temp storage for merges.
|
||||
*/
|
||||
private Object[] tmp;
|
||||
|
||||
/**
|
||||
* A stack of pending runs yet to be merged. Run i starts at
|
||||
* address base[i] and extends for len[i] elements. It's always
|
||||
* true (so long as the indices are in bounds) that:
|
||||
*
|
||||
* runBase[i] + runLen[i] == runBase[i + 1]
|
||||
*
|
||||
* so we could cut the storage for this, but it's a minor amount,
|
||||
* and keeping all the info explicit simplifies the code.
|
||||
*/
|
||||
private int stackSize = 0; // Number of pending runs on stack
|
||||
private final int[] runBase;
|
||||
private final int[] runLen;
|
||||
|
||||
/**
|
||||
* Creates a TimSort instance to maintain the state of an ongoing sort.
|
||||
*
|
||||
* @param a the array to be sorted
|
||||
*/
|
||||
private ComparableTimSort(Object[] a) {
|
||||
this.a = a;
|
||||
|
||||
// Allocate temp storage (which may be increased later if necessary)
|
||||
int len = a.length;
|
||||
@SuppressWarnings({"unchecked", "UnnecessaryLocalVariable"})
|
||||
Object[] newArray = new Object[len < 2 * INITIAL_TMP_STORAGE_LENGTH ?
|
||||
len >>> 1 : INITIAL_TMP_STORAGE_LENGTH];
|
||||
tmp = newArray;
|
||||
|
||||
/*
|
||||
* Allocate runs-to-be-merged stack (which cannot be expanded). The
|
||||
* stack length requirements are described in listsort.txt. The C
|
||||
* version always uses the same stack length (85), but this was
|
||||
* measured to be too expensive when sorting "mid-sized" arrays (e.g.,
|
||||
* 100 elements) in Java. Therefore, we use smaller (but sufficiently
|
||||
* large) stack lengths for smaller arrays. The "magic numbers" in the
|
||||
* computation below must be changed if MIN_MERGE is decreased. See
|
||||
* the MIN_MERGE declaration above for more information.
|
||||
*/
|
||||
int stackLen = (len < 120 ? 5 :
|
||||
len < 1542 ? 10 :
|
||||
len < 119151 ? 19 : 40);
|
||||
runBase = new int[stackLen];
|
||||
runLen = new int[stackLen];
|
||||
}
|
||||
|
||||
/*
|
||||
* The next two methods (which are package private and static) constitute
|
||||
* the entire API of this class. Each of these methods obeys the contract
|
||||
* of the public method with the same signature in java.util.Arrays.
|
||||
*/
|
||||
|
||||
static void sort(Object[] a) {
|
||||
sort(a, 0, a.length);
|
||||
}
|
||||
|
||||
static void sort(Object[] a, int lo, int hi) {
|
||||
rangeCheck(a.length, lo, hi);
|
||||
int nRemaining = hi - lo;
|
||||
if (nRemaining < 2)
|
||||
return; // Arrays of size 0 and 1 are always sorted
|
||||
|
||||
// If array is small, do a "mini-TimSort" with no merges
|
||||
if (nRemaining < MIN_MERGE) {
|
||||
int initRunLen = countRunAndMakeAscending(a, lo, hi);
|
||||
binarySort(a, lo, hi, lo + initRunLen);
|
||||
return;
|
||||
}
|
||||
|
||||
/**
|
||||
* March over the array once, left to right, finding natural runs,
|
||||
* extending short natural runs to minRun elements, and merging runs
|
||||
* to maintain stack invariant.
|
||||
*/
|
||||
ComparableTimSort ts = new ComparableTimSort(a);
|
||||
int minRun = minRunLength(nRemaining);
|
||||
do {
|
||||
// Identify next run
|
||||
int runLen = countRunAndMakeAscending(a, lo, hi);
|
||||
|
||||
// If run is short, extend to min(minRun, nRemaining)
|
||||
if (runLen < minRun) {
|
||||
int force = nRemaining <= minRun ? nRemaining : minRun;
|
||||
binarySort(a, lo, lo + force, lo + runLen);
|
||||
runLen = force;
|
||||
}
|
||||
|
||||
// Push run onto pending-run stack, and maybe merge
|
||||
ts.pushRun(lo, runLen);
|
||||
ts.mergeCollapse();
|
||||
|
||||
// Advance to find next run
|
||||
lo += runLen;
|
||||
nRemaining -= runLen;
|
||||
} while (nRemaining != 0);
|
||||
|
||||
// Merge all remaining runs to complete sort
|
||||
assert lo == hi;
|
||||
ts.mergeForceCollapse();
|
||||
assert ts.stackSize == 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sorts the specified portion of the specified array using a binary
|
||||
* insertion sort. This is the best method for sorting small numbers
|
||||
* of elements. It requires O(n log n) compares, but O(n^2) data
|
||||
* movement (worst case).
|
||||
*
|
||||
* If the initial part of the specified range is already sorted,
|
||||
* this method can take advantage of it: the method assumes that the
|
||||
* elements from index {@code lo}, inclusive, to {@code start},
|
||||
* exclusive are already sorted.
|
||||
*
|
||||
* @param a the array in which a range is to be sorted
|
||||
* @param lo the index of the first element in the range to be sorted
|
||||
* @param hi the index after the last element in the range to be sorted
|
||||
* @param start the index of the first element in the range that is
|
||||
* not already known to be sorted (@code lo <= start <= hi}
|
||||
*/
|
||||
@SuppressWarnings("fallthrough")
|
||||
private static void binarySort(Object[] a, int lo, int hi, int start) {
|
||||
assert lo <= start && start <= hi;
|
||||
if (start == lo)
|
||||
start++;
|
||||
for ( ; start < hi; start++) {
|
||||
@SuppressWarnings("unchecked")
|
||||
Comparable<Object> pivot = (Comparable) a[start];
|
||||
|
||||
// Set left (and right) to the index where a[start] (pivot) belongs
|
||||
int left = lo;
|
||||
int right = start;
|
||||
assert left <= right;
|
||||
/*
|
||||
* Invariants:
|
||||
* pivot >= all in [lo, left).
|
||||
* pivot < all in [right, start).
|
||||
*/
|
||||
while (left < right) {
|
||||
int mid = (left + right) >>> 1;
|
||||
if (pivot.compareTo(a[mid]) < 0)
|
||||
right = mid;
|
||||
else
|
||||
left = mid + 1;
|
||||
}
|
||||
assert left == right;
|
||||
|
||||
/*
|
||||
* The invariants still hold: pivot >= all in [lo, left) and
|
||||
* pivot < all in [left, start), so pivot belongs at left. Note
|
||||
* that if there are elements equal to pivot, left points to the
|
||||
* first slot after them -- that's why this sort is stable.
|
||||
* Slide elements over to make room to make room for pivot.
|
||||
*/
|
||||
int n = start - left; // The number of elements to move
|
||||
// Switch is just an optimization for arraycopy in default case
|
||||
switch(n) {
|
||||
case 2: a[left + 2] = a[left + 1];
|
||||
case 1: a[left + 1] = a[left];
|
||||
break;
|
||||
default: System.arraycopy(a, left, a, left + 1, n);
|
||||
}
|
||||
a[left] = pivot;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the length of the run beginning at the specified position in
|
||||
* the specified array and reverses the run if it is descending (ensuring
|
||||
* that the run will always be ascending when the method returns).
|
||||
*
|
||||
* A run is the longest ascending sequence with:
|
||||
*
|
||||
* a[lo] <= a[lo + 1] <= a[lo + 2] <= ...
|
||||
*
|
||||
* or the longest descending sequence with:
|
||||
*
|
||||
* a[lo] > a[lo + 1] > a[lo + 2] > ...
|
||||
*
|
||||
* For its intended use in a stable mergesort, the strictness of the
|
||||
* definition of "descending" is needed so that the call can safely
|
||||
* reverse a descending sequence without violating stability.
|
||||
*
|
||||
* @param a the array in which a run is to be counted and possibly reversed
|
||||
* @param lo index of the first element in the run
|
||||
* @param hi index after the last element that may be contained in the run.
|
||||
It is required that @code{lo < hi}.
|
||||
* @return the length of the run beginning at the specified position in
|
||||
* the specified array
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
private static int countRunAndMakeAscending(Object[] a, int lo, int hi) {
|
||||
assert lo < hi;
|
||||
int runHi = lo + 1;
|
||||
if (runHi == hi)
|
||||
return 1;
|
||||
|
||||
// Find end of run, and reverse range if descending
|
||||
if (((Comparable) a[runHi++]).compareTo(a[lo]) < 0) { // Descending
|
||||
while(runHi < hi && ((Comparable) a[runHi]).compareTo(a[runHi - 1]) < 0)
|
||||
runHi++;
|
||||
reverseRange(a, lo, runHi);
|
||||
} else { // Ascending
|
||||
while (runHi < hi && ((Comparable) a[runHi]).compareTo(a[runHi - 1]) >= 0)
|
||||
runHi++;
|
||||
}
|
||||
|
||||
return runHi - lo;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reverse the specified range of the specified array.
|
||||
*
|
||||
* @param a the array in which a range is to be reversed
|
||||
* @param lo the index of the first element in the range to be reversed
|
||||
* @param hi the index after the last element in the range to be reversed
|
||||
*/
|
||||
private static void reverseRange(Object[] a, int lo, int hi) {
|
||||
hi--;
|
||||
while (lo < hi) {
|
||||
Object t = a[lo];
|
||||
a[lo++] = a[hi];
|
||||
a[hi--] = t;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the minimum acceptable run length for an array of the specified
|
||||
* length. Natural runs shorter than this will be extended with
|
||||
* {@link #binarySort}.
|
||||
*
|
||||
* Roughly speaking, the computation is:
|
||||
*
|
||||
* If n < MIN_MERGE, return n (it's too small to bother with fancy stuff).
|
||||
* Else if n is an exact power of 2, return MIN_MERGE/2.
|
||||
* Else return an int k, MIN_MERGE/2 <= k <= MIN_MERGE, such that n/k
|
||||
* is close to, but strictly less than, an exact power of 2.
|
||||
*
|
||||
* For the rationale, see listsort.txt.
|
||||
*
|
||||
* @param n the length of the array to be sorted
|
||||
* @return the length of the minimum run to be merged
|
||||
*/
|
||||
private static int minRunLength(int n) {
|
||||
assert n >= 0;
|
||||
int r = 0; // Becomes 1 if any 1 bits are shifted off
|
||||
while (n >= MIN_MERGE) {
|
||||
r |= (n & 1);
|
||||
n >>= 1;
|
||||
}
|
||||
return n + r;
|
||||
}
|
||||
|
||||
/**
|
||||
* Pushes the specified run onto the pending-run stack.
|
||||
*
|
||||
* @param runBase index of the first element in the run
|
||||
* @param runLen the number of elements in the run
|
||||
*/
|
||||
private void pushRun(int runBase, int runLen) {
|
||||
this.runBase[stackSize] = runBase;
|
||||
this.runLen[stackSize] = runLen;
|
||||
stackSize++;
|
||||
}
|
||||
|
||||
/**
|
||||
* Examines the stack of runs waiting to be merged and merges adjacent runs
|
||||
* until the stack invariants are reestablished:
|
||||
*
|
||||
* 1. runLen[i - 3] > runLen[i - 2] + runLen[i - 1]
|
||||
* 2. runLen[i - 2] > runLen[i - 1]
|
||||
*
|
||||
* This method is called each time a new run is pushed onto the stack,
|
||||
* so the invariants are guaranteed to hold for i < stackSize upon
|
||||
* entry to the method.
|
||||
*/
|
||||
private void mergeCollapse() {
|
||||
while (stackSize > 1) {
|
||||
int n = stackSize - 2;
|
||||
if (n > 0 && runLen[n-1] <= runLen[n] + runLen[n+1]) {
|
||||
if (runLen[n - 1] < runLen[n + 1])
|
||||
n--;
|
||||
mergeAt(n);
|
||||
} else if (runLen[n] <= runLen[n + 1]) {
|
||||
mergeAt(n);
|
||||
} else {
|
||||
break; // Invariant is established
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Merges all runs on the stack until only one remains. This method is
|
||||
* called once, to complete the sort.
|
||||
*/
|
||||
private void mergeForceCollapse() {
|
||||
while (stackSize > 1) {
|
||||
int n = stackSize - 2;
|
||||
if (n > 0 && runLen[n - 1] < runLen[n + 1])
|
||||
n--;
|
||||
mergeAt(n);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Merges the two runs at stack indices i and i+1. Run i must be
|
||||
* the penultimate or antepenultimate run on the stack. In other words,
|
||||
* i must be equal to stackSize-2 or stackSize-3.
|
||||
*
|
||||
* @param i stack index of the first of the two runs to merge
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
private void mergeAt(int i) {
|
||||
assert stackSize >= 2;
|
||||
assert i >= 0;
|
||||
assert i == stackSize - 2 || i == stackSize - 3;
|
||||
|
||||
int base1 = runBase[i];
|
||||
int len1 = runLen[i];
|
||||
int base2 = runBase[i + 1];
|
||||
int len2 = runLen[i + 1];
|
||||
assert len1 > 0 && len2 > 0;
|
||||
assert base1 + len1 == base2;
|
||||
|
||||
/*
|
||||
* Record the length of the combined runs; if i is the 3rd-last
|
||||
* run now, also slide over the last run (which isn't involved
|
||||
* in this merge). The current run (i+1) goes away in any case.
|
||||
*/
|
||||
runLen[i] = len1 + len2;
|
||||
if (i == stackSize - 3) {
|
||||
runBase[i + 1] = runBase[i + 2];
|
||||
runLen[i + 1] = runLen[i + 2];
|
||||
}
|
||||
stackSize--;
|
||||
|
||||
/*
|
||||
* Find where the first element of run2 goes in run1. Prior elements
|
||||
* in run1 can be ignored (because they're already in place).
|
||||
*/
|
||||
int k = gallopRight((Comparable<Object>) a[base2], a, base1, len1, 0);
|
||||
assert k >= 0;
|
||||
base1 += k;
|
||||
len1 -= k;
|
||||
if (len1 == 0)
|
||||
return;
|
||||
|
||||
/*
|
||||
* Find where the last element of run1 goes in run2. Subsequent elements
|
||||
* in run2 can be ignored (because they're already in place).
|
||||
*/
|
||||
len2 = gallopLeft((Comparable<Object>) a[base1 + len1 - 1], a,
|
||||
base2, len2, len2 - 1);
|
||||
assert len2 >= 0;
|
||||
if (len2 == 0)
|
||||
return;
|
||||
|
||||
// Merge remaining runs, using tmp array with min(len1, len2) elements
|
||||
if (len1 <= len2)
|
||||
mergeLo(base1, len1, base2, len2);
|
||||
else
|
||||
mergeHi(base1, len1, base2, len2);
|
||||
}
|
||||
|
||||
/**
|
||||
* Locates the position at which to insert the specified key into the
|
||||
* specified sorted range; if the range contains an element equal to key,
|
||||
* returns the index of the leftmost equal element.
|
||||
*
|
||||
* @param key the key whose insertion point to search for
|
||||
* @param a the array in which to search
|
||||
* @param base the index of the first element in the range
|
||||
* @param len the length of the range; must be > 0
|
||||
* @param hint the index at which to begin the search, 0 <= hint < n.
|
||||
* The closer hint is to the result, the faster this method will run.
|
||||
* @return the int k, 0 <= k <= n such that a[b + k - 1] < key <= a[b + k],
|
||||
* pretending that a[b - 1] is minus infinity and a[b + n] is infinity.
|
||||
* In other words, key belongs at index b + k; or in other words,
|
||||
* the first k elements of a should precede key, and the last n - k
|
||||
* should follow it.
|
||||
*/
|
||||
private static int gallopLeft(Comparable<Object> key, Object[] a,
|
||||
int base, int len, int hint) {
|
||||
assert len > 0 && hint >= 0 && hint < len;
|
||||
|
||||
int lastOfs = 0;
|
||||
int ofs = 1;
|
||||
if (key.compareTo(a[base + hint]) > 0) {
|
||||
// Gallop right until a[base+hint+lastOfs] < key <= a[base+hint+ofs]
|
||||
int maxOfs = len - hint;
|
||||
while (ofs < maxOfs && key.compareTo(a[base + hint + ofs]) > 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to base
|
||||
lastOfs += hint;
|
||||
ofs += hint;
|
||||
} else { // key <= a[base + hint]
|
||||
// Gallop left until a[base+hint-ofs] < key <= a[base+hint-lastOfs]
|
||||
final int maxOfs = hint + 1;
|
||||
while (ofs < maxOfs && key.compareTo(a[base + hint - ofs]) <= 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to base
|
||||
int tmp = lastOfs;
|
||||
lastOfs = hint - ofs;
|
||||
ofs = hint - tmp;
|
||||
}
|
||||
assert -1 <= lastOfs && lastOfs < ofs && ofs <= len;
|
||||
|
||||
/*
|
||||
* Now a[base+lastOfs] < key <= a[base+ofs], so key belongs somewhere
|
||||
* to the right of lastOfs but no farther right than ofs. Do a binary
|
||||
* search, with invariant a[base + lastOfs - 1] < key <= a[base + ofs].
|
||||
*/
|
||||
lastOfs++;
|
||||
while (lastOfs < ofs) {
|
||||
int m = lastOfs + ((ofs - lastOfs) >>> 1);
|
||||
|
||||
if (key.compareTo(a[base + m]) > 0)
|
||||
lastOfs = m + 1; // a[base + m] < key
|
||||
else
|
||||
ofs = m; // key <= a[base + m]
|
||||
}
|
||||
assert lastOfs == ofs; // so a[base + ofs - 1] < key <= a[base + ofs]
|
||||
return ofs;
|
||||
}
|
||||
|
||||
/**
|
||||
* Like gallopLeft, except that if the range contains an element equal to
|
||||
* key, gallopRight returns the index after the rightmost equal element.
|
||||
*
|
||||
* @param key the key whose insertion point to search for
|
||||
* @param a the array in which to search
|
||||
* @param base the index of the first element in the range
|
||||
* @param len the length of the range; must be > 0
|
||||
* @param hint the index at which to begin the search, 0 <= hint < n.
|
||||
* The closer hint is to the result, the faster this method will run.
|
||||
* @return the int k, 0 <= k <= n such that a[b + k - 1] <= key < a[b + k]
|
||||
*/
|
||||
private static int gallopRight(Comparable<Object> key, Object[] a,
|
||||
int base, int len, int hint) {
|
||||
assert len > 0 && hint >= 0 && hint < len;
|
||||
|
||||
int ofs = 1;
|
||||
int lastOfs = 0;
|
||||
if (key.compareTo(a[base + hint]) < 0) {
|
||||
// Gallop left until a[b+hint - ofs] <= key < a[b+hint - lastOfs]
|
||||
int maxOfs = hint + 1;
|
||||
while (ofs < maxOfs && key.compareTo(a[base + hint - ofs]) < 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to b
|
||||
int tmp = lastOfs;
|
||||
lastOfs = hint - ofs;
|
||||
ofs = hint - tmp;
|
||||
} else { // a[b + hint] <= key
|
||||
// Gallop right until a[b+hint + lastOfs] <= key < a[b+hint + ofs]
|
||||
int maxOfs = len - hint;
|
||||
while (ofs < maxOfs && key.compareTo(a[base + hint + ofs]) >= 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to b
|
||||
lastOfs += hint;
|
||||
ofs += hint;
|
||||
}
|
||||
assert -1 <= lastOfs && lastOfs < ofs && ofs <= len;
|
||||
|
||||
/*
|
||||
* Now a[b + lastOfs] <= key < a[b + ofs], so key belongs somewhere to
|
||||
* the right of lastOfs but no farther right than ofs. Do a binary
|
||||
* search, with invariant a[b + lastOfs - 1] <= key < a[b + ofs].
|
||||
*/
|
||||
lastOfs++;
|
||||
while (lastOfs < ofs) {
|
||||
int m = lastOfs + ((ofs - lastOfs) >>> 1);
|
||||
|
||||
if (key.compareTo(a[base + m]) < 0)
|
||||
ofs = m; // key < a[b + m]
|
||||
else
|
||||
lastOfs = m + 1; // a[b + m] <= key
|
||||
}
|
||||
assert lastOfs == ofs; // so a[b + ofs - 1] <= key < a[b + ofs]
|
||||
return ofs;
|
||||
}
|
||||
|
||||
/**
|
||||
* Merges two adjacent runs in place, in a stable fashion. The first
|
||||
* element of the first run must be greater than the first element of the
|
||||
* second run (a[base1] > a[base2]), and the last element of the first run
|
||||
* (a[base1 + len1-1]) must be greater than all elements of the second run.
|
||||
*
|
||||
* For performance, this method should be called only when len1 <= len2;
|
||||
* its twin, mergeHi should be called if len1 >= len2. (Either method
|
||||
* may be called if len1 == len2.)
|
||||
*
|
||||
* @param base1 index of first element in first run to be merged
|
||||
* @param len1 length of first run to be merged (must be > 0)
|
||||
* @param base2 index of first element in second run to be merged
|
||||
* (must be aBase + aLen)
|
||||
* @param len2 length of second run to be merged (must be > 0)
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
private void mergeLo(int base1, int len1, int base2, int len2) {
|
||||
assert len1 > 0 && len2 > 0 && base1 + len1 == base2;
|
||||
|
||||
// Copy first run into temp array
|
||||
Object[] a = this.a; // For performance
|
||||
Object[] tmp = ensureCapacity(len1);
|
||||
System.arraycopy(a, base1, tmp, 0, len1);
|
||||
|
||||
int cursor1 = 0; // Indexes into tmp array
|
||||
int cursor2 = base2; // Indexes int a
|
||||
int dest = base1; // Indexes int a
|
||||
|
||||
// Move first element of second run and deal with degenerate cases
|
||||
a[dest++] = a[cursor2++];
|
||||
if (--len2 == 0) {
|
||||
System.arraycopy(tmp, cursor1, a, dest, len1);
|
||||
return;
|
||||
}
|
||||
if (len1 == 1) {
|
||||
System.arraycopy(a, cursor2, a, dest, len2);
|
||||
a[dest + len2] = tmp[cursor1]; // Last elt of run 1 to end of merge
|
||||
return;
|
||||
}
|
||||
|
||||
int minGallop = this.minGallop; // Use local variable for performance
|
||||
outer:
|
||||
while (true) {
|
||||
int count1 = 0; // Number of times in a row that first run won
|
||||
int count2 = 0; // Number of times in a row that second run won
|
||||
|
||||
/*
|
||||
* Do the straightforward thing until (if ever) one run starts
|
||||
* winning consistently.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 1 && len2 > 0;
|
||||
if (((Comparable) a[cursor2]).compareTo(tmp[cursor1]) < 0) {
|
||||
a[dest++] = a[cursor2++];
|
||||
count2++;
|
||||
count1 = 0;
|
||||
if (--len2 == 0)
|
||||
break outer;
|
||||
} else {
|
||||
a[dest++] = tmp[cursor1++];
|
||||
count1++;
|
||||
count2 = 0;
|
||||
if (--len1 == 1)
|
||||
break outer;
|
||||
}
|
||||
} while ((count1 | count2) < minGallop);
|
||||
|
||||
/*
|
||||
* One run is winning so consistently that galloping may be a
|
||||
* huge win. So try that, and continue galloping until (if ever)
|
||||
* neither run appears to be winning consistently anymore.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 1 && len2 > 0;
|
||||
count1 = gallopRight((Comparable) a[cursor2], tmp, cursor1, len1, 0);
|
||||
if (count1 != 0) {
|
||||
System.arraycopy(tmp, cursor1, a, dest, count1);
|
||||
dest += count1;
|
||||
cursor1 += count1;
|
||||
len1 -= count1;
|
||||
if (len1 <= 1) // len1 == 1 || len1 == 0
|
||||
break outer;
|
||||
}
|
||||
a[dest++] = a[cursor2++];
|
||||
if (--len2 == 0)
|
||||
break outer;
|
||||
|
||||
count2 = gallopLeft((Comparable) tmp[cursor1], a, cursor2, len2, 0);
|
||||
if (count2 != 0) {
|
||||
System.arraycopy(a, cursor2, a, dest, count2);
|
||||
dest += count2;
|
||||
cursor2 += count2;
|
||||
len2 -= count2;
|
||||
if (len2 == 0)
|
||||
break outer;
|
||||
}
|
||||
a[dest++] = tmp[cursor1++];
|
||||
if (--len1 == 1)
|
||||
break outer;
|
||||
minGallop--;
|
||||
} while (count1 >= MIN_GALLOP | count2 >= MIN_GALLOP);
|
||||
if (minGallop < 0)
|
||||
minGallop = 0;
|
||||
minGallop += 2; // Penalize for leaving gallop mode
|
||||
} // End of "outer" loop
|
||||
this.minGallop = minGallop < 1 ? 1 : minGallop; // Write back to field
|
||||
|
||||
if (len1 == 1) {
|
||||
assert len2 > 0;
|
||||
System.arraycopy(a, cursor2, a, dest, len2);
|
||||
a[dest + len2] = tmp[cursor1]; // Last elt of run 1 to end of merge
|
||||
} else if (len1 == 0) {
|
||||
throw new IllegalArgumentException(
|
||||
"Comparison method violates its general contract!");
|
||||
} else {
|
||||
assert len2 == 0;
|
||||
assert len1 > 1;
|
||||
System.arraycopy(tmp, cursor1, a, dest, len1);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Like mergeLo, except that this method should be called only if
|
||||
* len1 >= len2; mergeLo should be called if len1 <= len2. (Either method
|
||||
* may be called if len1 == len2.)
|
||||
*
|
||||
* @param base1 index of first element in first run to be merged
|
||||
* @param len1 length of first run to be merged (must be > 0)
|
||||
* @param base2 index of first element in second run to be merged
|
||||
* (must be aBase + aLen)
|
||||
* @param len2 length of second run to be merged (must be > 0)
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
private void mergeHi(int base1, int len1, int base2, int len2) {
|
||||
assert len1 > 0 && len2 > 0 && base1 + len1 == base2;
|
||||
|
||||
// Copy second run into temp array
|
||||
Object[] a = this.a; // For performance
|
||||
Object[] tmp = ensureCapacity(len2);
|
||||
System.arraycopy(a, base2, tmp, 0, len2);
|
||||
|
||||
int cursor1 = base1 + len1 - 1; // Indexes into a
|
||||
int cursor2 = len2 - 1; // Indexes into tmp array
|
||||
int dest = base2 + len2 - 1; // Indexes into a
|
||||
|
||||
// Move last element of first run and deal with degenerate cases
|
||||
a[dest--] = a[cursor1--];
|
||||
if (--len1 == 0) {
|
||||
System.arraycopy(tmp, 0, a, dest - (len2 - 1), len2);
|
||||
return;
|
||||
}
|
||||
if (len2 == 1) {
|
||||
dest -= len1;
|
||||
cursor1 -= len1;
|
||||
System.arraycopy(a, cursor1 + 1, a, dest + 1, len1);
|
||||
a[dest] = tmp[cursor2];
|
||||
return;
|
||||
}
|
||||
|
||||
int minGallop = this.minGallop; // Use local variable for performance
|
||||
outer:
|
||||
while (true) {
|
||||
int count1 = 0; // Number of times in a row that first run won
|
||||
int count2 = 0; // Number of times in a row that second run won
|
||||
|
||||
/*
|
||||
* Do the straightforward thing until (if ever) one run
|
||||
* appears to win consistently.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 0 && len2 > 1;
|
||||
if (((Comparable) tmp[cursor2]).compareTo(a[cursor1]) < 0) {
|
||||
a[dest--] = a[cursor1--];
|
||||
count1++;
|
||||
count2 = 0;
|
||||
if (--len1 == 0)
|
||||
break outer;
|
||||
} else {
|
||||
a[dest--] = tmp[cursor2--];
|
||||
count2++;
|
||||
count1 = 0;
|
||||
if (--len2 == 1)
|
||||
break outer;
|
||||
}
|
||||
} while ((count1 | count2) < minGallop);
|
||||
|
||||
/*
|
||||
* One run is winning so consistently that galloping may be a
|
||||
* huge win. So try that, and continue galloping until (if ever)
|
||||
* neither run appears to be winning consistently anymore.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 0 && len2 > 1;
|
||||
count1 = len1 - gallopRight((Comparable) tmp[cursor2], a, base1, len1, len1 - 1);
|
||||
if (count1 != 0) {
|
||||
dest -= count1;
|
||||
cursor1 -= count1;
|
||||
len1 -= count1;
|
||||
System.arraycopy(a, cursor1 + 1, a, dest + 1, count1);
|
||||
if (len1 == 0)
|
||||
break outer;
|
||||
}
|
||||
a[dest--] = tmp[cursor2--];
|
||||
if (--len2 == 1)
|
||||
break outer;
|
||||
|
||||
count2 = len2 - gallopLeft((Comparable) a[cursor1], tmp, 0, len2, len2 - 1);
|
||||
if (count2 != 0) {
|
||||
dest -= count2;
|
||||
cursor2 -= count2;
|
||||
len2 -= count2;
|
||||
System.arraycopy(tmp, cursor2 + 1, a, dest + 1, count2);
|
||||
if (len2 <= 1)
|
||||
break outer; // len2 == 1 || len2 == 0
|
||||
}
|
||||
a[dest--] = a[cursor1--];
|
||||
if (--len1 == 0)
|
||||
break outer;
|
||||
minGallop--;
|
||||
} while (count1 >= MIN_GALLOP | count2 >= MIN_GALLOP);
|
||||
if (minGallop < 0)
|
||||
minGallop = 0;
|
||||
minGallop += 2; // Penalize for leaving gallop mode
|
||||
} // End of "outer" loop
|
||||
this.minGallop = minGallop < 1 ? 1 : minGallop; // Write back to field
|
||||
|
||||
if (len2 == 1) {
|
||||
assert len1 > 0;
|
||||
dest -= len1;
|
||||
cursor1 -= len1;
|
||||
System.arraycopy(a, cursor1 + 1, a, dest + 1, len1);
|
||||
a[dest] = tmp[cursor2]; // Move first elt of run2 to front of merge
|
||||
} else if (len2 == 0) {
|
||||
throw new IllegalArgumentException(
|
||||
"Comparison method violates its general contract!");
|
||||
} else {
|
||||
assert len1 == 0;
|
||||
assert len2 > 0;
|
||||
System.arraycopy(tmp, 0, a, dest - (len2 - 1), len2);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Ensures that the external array tmp has at least the specified
|
||||
* number of elements, increasing its size if necessary. The size
|
||||
* increases exponentially to ensure amortized linear time complexity.
|
||||
*
|
||||
* @param minCapacity the minimum required capacity of the tmp array
|
||||
* @return tmp, whether or not it grew
|
||||
*/
|
||||
private Object[] ensureCapacity(int minCapacity) {
|
||||
if (tmp.length < minCapacity) {
|
||||
// Compute smallest power of 2 > minCapacity
|
||||
int newSize = minCapacity;
|
||||
newSize |= newSize >> 1;
|
||||
newSize |= newSize >> 2;
|
||||
newSize |= newSize >> 4;
|
||||
newSize |= newSize >> 8;
|
||||
newSize |= newSize >> 16;
|
||||
newSize++;
|
||||
|
||||
if (newSize < 0) // Not bloody likely!
|
||||
newSize = minCapacity;
|
||||
else
|
||||
newSize = Math.min(newSize, a.length >>> 1);
|
||||
|
||||
@SuppressWarnings({"unchecked", "UnnecessaryLocalVariable"})
|
||||
Object[] newArray = new Object[newSize];
|
||||
tmp = newArray;
|
||||
}
|
||||
return tmp;
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks that fromIndex and toIndex are in range, and throws an
|
||||
* appropriate exception if they aren't.
|
||||
*
|
||||
* @param arrayLen the length of the array
|
||||
* @param fromIndex the index of the first element of the range
|
||||
* @param toIndex the index after the last element of the range
|
||||
* @throws IllegalArgumentException if fromIndex > toIndex
|
||||
* @throws ArrayIndexOutOfBoundsException if fromIndex < 0
|
||||
* or toIndex > arrayLen
|
||||
*/
|
||||
private static void rangeCheck(int arrayLen, int fromIndex, int toIndex) {
|
||||
if (fromIndex > toIndex)
|
||||
throw new IllegalArgumentException("fromIndex(" + fromIndex +
|
||||
") > toIndex(" + toIndex+")");
|
||||
if (fromIndex < 0)
|
||||
throw new ArrayIndexOutOfBoundsException(fromIndex);
|
||||
if (toIndex > arrayLen)
|
||||
throw new ArrayIndexOutOfBoundsException(toIndex);
|
||||
}
|
||||
}
|
||||
@ -2818,15 +2818,18 @@ public final class Formatter implements Closeable, Flushable {
|
||||
}
|
||||
|
||||
private void printString(Object arg, Locale l) throws IOException {
|
||||
if (arg == null) {
|
||||
print("null");
|
||||
} else if (arg instanceof Formattable) {
|
||||
if (arg instanceof Formattable) {
|
||||
Formatter fmt = formatter;
|
||||
if (formatter.locale() != l)
|
||||
fmt = new Formatter(formatter.out(), l);
|
||||
((Formattable)arg).formatTo(fmt, f.valueOf(), width, precision);
|
||||
} else {
|
||||
print(arg.toString());
|
||||
if (f.contains(Flags.ALTERNATE))
|
||||
failMismatch(Flags.ALTERNATE, 's');
|
||||
if (arg == null)
|
||||
print("null");
|
||||
else
|
||||
print(arg.toString());
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
928
jdk/src/share/classes/java/util/TimSort.java
Normal file
928
jdk/src/share/classes/java/util/TimSort.java
Normal file
@ -0,0 +1,928 @@
|
||||
/*
|
||||
* Copyright 2009 Google Inc. All Rights Reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation. Sun designates this
|
||||
* particular file as subject to the "Classpath" exception as provided
|
||||
* by Sun in the LICENSE file that accompanied this code.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
package java.util;
|
||||
|
||||
/**
|
||||
* A stable, adaptive, iterative mergesort that requires far fewer than
|
||||
* n lg(n) comparisons when running on partially sorted arrays, while
|
||||
* offering performance comparable to a traditional mergesort when run
|
||||
* on random arrays. Like all proper mergesorts, this sort is stable and
|
||||
* runs O(n log n) time (worst case). In the worst case, this sort requires
|
||||
* temporary storage space for n/2 object references; in the best case,
|
||||
* it requires only a small constant amount of space.
|
||||
*
|
||||
* This implementation was adapted from Tim Peters's list sort for
|
||||
* Python, which is described in detail here:
|
||||
*
|
||||
* http://svn.python.org/projects/python/trunk/Objects/listsort.txt
|
||||
*
|
||||
* Tim's C code may be found here:
|
||||
*
|
||||
* http://svn.python.org/projects/python/trunk/Objects/listobject.c
|
||||
*
|
||||
* The underlying techniques are described in this paper (and may have
|
||||
* even earlier origins):
|
||||
*
|
||||
* "Optimistic Sorting and Information Theoretic Complexity"
|
||||
* Peter McIlroy
|
||||
* SODA (Fourth Annual ACM-SIAM Symposium on Discrete Algorithms),
|
||||
* pp 467-474, Austin, Texas, 25-27 January 1993.
|
||||
*
|
||||
* While the API to this class consists solely of static methods, it is
|
||||
* (privately) instantiable; a TimSort instance holds the state of an ongoing
|
||||
* sort, assuming the input array is large enough to warrant the full-blown
|
||||
* TimSort. Small arrays are sorted in place, using a binary insertion sort.
|
||||
*
|
||||
* @author Josh Bloch
|
||||
*/
|
||||
class TimSort<T> {
|
||||
/**
|
||||
* This is the minimum sized sequence that will be merged. Shorter
|
||||
* sequences will be lengthened by calling binarySort. If the entire
|
||||
* array is less than this length, no merges will be performed.
|
||||
*
|
||||
* This constant should be a power of two. It was 64 in Tim Peter's C
|
||||
* implementation, but 32 was empirically determined to work better in
|
||||
* this implementation. In the unlikely event that you set this constant
|
||||
* to be a number that's not a power of two, you'll need to change the
|
||||
* {@link #minRunLength} computation.
|
||||
*
|
||||
* If you decrease this constant, you must change the stackLen
|
||||
* computation in the TimSort constructor, or you risk an
|
||||
* ArrayOutOfBounds exception. See listsort.txt for a discussion
|
||||
* of the minimum stack length required as a function of the length
|
||||
* of the array being sorted and the minimum merge sequence length.
|
||||
*/
|
||||
private static final int MIN_MERGE = 32;
|
||||
|
||||
/**
|
||||
* The array being sorted.
|
||||
*/
|
||||
private final T[] a;
|
||||
|
||||
/**
|
||||
* The comparator for this sort.
|
||||
*/
|
||||
private final Comparator<? super T> c;
|
||||
|
||||
/**
|
||||
* When we get into galloping mode, we stay there until both runs win less
|
||||
* often than MIN_GALLOP consecutive times.
|
||||
*/
|
||||
private static final int MIN_GALLOP = 7;
|
||||
|
||||
/**
|
||||
* This controls when we get *into* galloping mode. It is initialized
|
||||
* to MIN_GALLOP. The mergeLo and mergeHi methods nudge it higher for
|
||||
* random data, and lower for highly structured data.
|
||||
*/
|
||||
private int minGallop = MIN_GALLOP;
|
||||
|
||||
/**
|
||||
* Maximum initial size of tmp array, which is used for merging. The array
|
||||
* can grow to accommodate demand.
|
||||
*
|
||||
* Unlike Tim's original C version, we do not allocate this much storage
|
||||
* when sorting smaller arrays. This change was required for performance.
|
||||
*/
|
||||
private static final int INITIAL_TMP_STORAGE_LENGTH = 256;
|
||||
|
||||
/**
|
||||
* Temp storage for merges.
|
||||
*/
|
||||
private T[] tmp; // Actual runtime type will be Object[], regardless of T
|
||||
|
||||
/**
|
||||
* A stack of pending runs yet to be merged. Run i starts at
|
||||
* address base[i] and extends for len[i] elements. It's always
|
||||
* true (so long as the indices are in bounds) that:
|
||||
*
|
||||
* runBase[i] + runLen[i] == runBase[i + 1]
|
||||
*
|
||||
* so we could cut the storage for this, but it's a minor amount,
|
||||
* and keeping all the info explicit simplifies the code.
|
||||
*/
|
||||
private int stackSize = 0; // Number of pending runs on stack
|
||||
private final int[] runBase;
|
||||
private final int[] runLen;
|
||||
|
||||
/**
|
||||
* Creates a TimSort instance to maintain the state of an ongoing sort.
|
||||
*
|
||||
* @param a the array to be sorted
|
||||
* @param c the comparator to determine the order of the sort
|
||||
*/
|
||||
private TimSort(T[] a, Comparator<? super T> c) {
|
||||
this.a = a;
|
||||
this.c = c;
|
||||
|
||||
// Allocate temp storage (which may be increased later if necessary)
|
||||
int len = a.length;
|
||||
@SuppressWarnings({"unchecked", "UnnecessaryLocalVariable"})
|
||||
T[] newArray = (T[]) new Object[len < 2 * INITIAL_TMP_STORAGE_LENGTH ?
|
||||
len >>> 1 : INITIAL_TMP_STORAGE_LENGTH];
|
||||
tmp = newArray;
|
||||
|
||||
/*
|
||||
* Allocate runs-to-be-merged stack (which cannot be expanded). The
|
||||
* stack length requirements are described in listsort.txt. The C
|
||||
* version always uses the same stack length (85), but this was
|
||||
* measured to be too expensive when sorting "mid-sized" arrays (e.g.,
|
||||
* 100 elements) in Java. Therefore, we use smaller (but sufficiently
|
||||
* large) stack lengths for smaller arrays. The "magic numbers" in the
|
||||
* computation below must be changed if MIN_MERGE is decreased. See
|
||||
* the MIN_MERGE declaration above for more information.
|
||||
*/
|
||||
int stackLen = (len < 120 ? 5 :
|
||||
len < 1542 ? 10 :
|
||||
len < 119151 ? 19 : 40);
|
||||
runBase = new int[stackLen];
|
||||
runLen = new int[stackLen];
|
||||
}
|
||||
|
||||
/*
|
||||
* The next two methods (which are package private and static) constitute
|
||||
* the entire API of this class. Each of these methods obeys the contract
|
||||
* of the public method with the same signature in java.util.Arrays.
|
||||
*/
|
||||
|
||||
static <T> void sort(T[] a, Comparator<? super T> c) {
|
||||
sort(a, 0, a.length, c);
|
||||
}
|
||||
|
||||
static <T> void sort(T[] a, int lo, int hi, Comparator<? super T> c) {
|
||||
if (c == null) {
|
||||
Arrays.sort(a, lo, hi);
|
||||
return;
|
||||
}
|
||||
|
||||
rangeCheck(a.length, lo, hi);
|
||||
int nRemaining = hi - lo;
|
||||
if (nRemaining < 2)
|
||||
return; // Arrays of size 0 and 1 are always sorted
|
||||
|
||||
// If array is small, do a "mini-TimSort" with no merges
|
||||
if (nRemaining < MIN_MERGE) {
|
||||
int initRunLen = countRunAndMakeAscending(a, lo, hi, c);
|
||||
binarySort(a, lo, hi, lo + initRunLen, c);
|
||||
return;
|
||||
}
|
||||
|
||||
/**
|
||||
* March over the array once, left to right, finding natural runs,
|
||||
* extending short natural runs to minRun elements, and merging runs
|
||||
* to maintain stack invariant.
|
||||
*/
|
||||
TimSort<T> ts = new TimSort<T>(a, c);
|
||||
int minRun = minRunLength(nRemaining);
|
||||
do {
|
||||
// Identify next run
|
||||
int runLen = countRunAndMakeAscending(a, lo, hi, c);
|
||||
|
||||
// If run is short, extend to min(minRun, nRemaining)
|
||||
if (runLen < minRun) {
|
||||
int force = nRemaining <= minRun ? nRemaining : minRun;
|
||||
binarySort(a, lo, lo + force, lo + runLen, c);
|
||||
runLen = force;
|
||||
}
|
||||
|
||||
// Push run onto pending-run stack, and maybe merge
|
||||
ts.pushRun(lo, runLen);
|
||||
ts.mergeCollapse();
|
||||
|
||||
// Advance to find next run
|
||||
lo += runLen;
|
||||
nRemaining -= runLen;
|
||||
} while (nRemaining != 0);
|
||||
|
||||
// Merge all remaining runs to complete sort
|
||||
assert lo == hi;
|
||||
ts.mergeForceCollapse();
|
||||
assert ts.stackSize == 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sorts the specified portion of the specified array using a binary
|
||||
* insertion sort. This is the best method for sorting small numbers
|
||||
* of elements. It requires O(n log n) compares, but O(n^2) data
|
||||
* movement (worst case).
|
||||
*
|
||||
* If the initial part of the specified range is already sorted,
|
||||
* this method can take advantage of it: the method assumes that the
|
||||
* elements from index {@code lo}, inclusive, to {@code start},
|
||||
* exclusive are already sorted.
|
||||
*
|
||||
* @param a the array in which a range is to be sorted
|
||||
* @param lo the index of the first element in the range to be sorted
|
||||
* @param hi the index after the last element in the range to be sorted
|
||||
* @param start the index of the first element in the range that is
|
||||
* not already known to be sorted (@code lo <= start <= hi}
|
||||
* @param c comparator to used for the sort
|
||||
*/
|
||||
@SuppressWarnings("fallthrough")
|
||||
private static <T> void binarySort(T[] a, int lo, int hi, int start,
|
||||
Comparator<? super T> c) {
|
||||
assert lo <= start && start <= hi;
|
||||
if (start == lo)
|
||||
start++;
|
||||
for ( ; start < hi; start++) {
|
||||
T pivot = a[start];
|
||||
|
||||
// Set left (and right) to the index where a[start] (pivot) belongs
|
||||
int left = lo;
|
||||
int right = start;
|
||||
assert left <= right;
|
||||
/*
|
||||
* Invariants:
|
||||
* pivot >= all in [lo, left).
|
||||
* pivot < all in [right, start).
|
||||
*/
|
||||
while (left < right) {
|
||||
int mid = (left + right) >>> 1;
|
||||
if (c.compare(pivot, a[mid]) < 0)
|
||||
right = mid;
|
||||
else
|
||||
left = mid + 1;
|
||||
}
|
||||
assert left == right;
|
||||
|
||||
/*
|
||||
* The invariants still hold: pivot >= all in [lo, left) and
|
||||
* pivot < all in [left, start), so pivot belongs at left. Note
|
||||
* that if there are elements equal to pivot, left points to the
|
||||
* first slot after them -- that's why this sort is stable.
|
||||
* Slide elements over to make room to make room for pivot.
|
||||
*/
|
||||
int n = start - left; // The number of elements to move
|
||||
// Switch is just an optimization for arraycopy in default case
|
||||
switch(n) {
|
||||
case 2: a[left + 2] = a[left + 1];
|
||||
case 1: a[left + 1] = a[left];
|
||||
break;
|
||||
default: System.arraycopy(a, left, a, left + 1, n);
|
||||
}
|
||||
a[left] = pivot;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the length of the run beginning at the specified position in
|
||||
* the specified array and reverses the run if it is descending (ensuring
|
||||
* that the run will always be ascending when the method returns).
|
||||
*
|
||||
* A run is the longest ascending sequence with:
|
||||
*
|
||||
* a[lo] <= a[lo + 1] <= a[lo + 2] <= ...
|
||||
*
|
||||
* or the longest descending sequence with:
|
||||
*
|
||||
* a[lo] > a[lo + 1] > a[lo + 2] > ...
|
||||
*
|
||||
* For its intended use in a stable mergesort, the strictness of the
|
||||
* definition of "descending" is needed so that the call can safely
|
||||
* reverse a descending sequence without violating stability.
|
||||
*
|
||||
* @param a the array in which a run is to be counted and possibly reversed
|
||||
* @param lo index of the first element in the run
|
||||
* @param hi index after the last element that may be contained in the run.
|
||||
It is required that @code{lo < hi}.
|
||||
* @param c the comparator to used for the sort
|
||||
* @return the length of the run beginning at the specified position in
|
||||
* the specified array
|
||||
*/
|
||||
private static <T> int countRunAndMakeAscending(T[] a, int lo, int hi,
|
||||
Comparator<? super T> c) {
|
||||
assert lo < hi;
|
||||
int runHi = lo + 1;
|
||||
if (runHi == hi)
|
||||
return 1;
|
||||
|
||||
// Find end of run, and reverse range if descending
|
||||
if (c.compare(a[runHi++], a[lo]) < 0) { // Descending
|
||||
while(runHi < hi && c.compare(a[runHi], a[runHi - 1]) < 0)
|
||||
runHi++;
|
||||
reverseRange(a, lo, runHi);
|
||||
} else { // Ascending
|
||||
while (runHi < hi && c.compare(a[runHi], a[runHi - 1]) >= 0)
|
||||
runHi++;
|
||||
}
|
||||
|
||||
return runHi - lo;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reverse the specified range of the specified array.
|
||||
*
|
||||
* @param a the array in which a range is to be reversed
|
||||
* @param lo the index of the first element in the range to be reversed
|
||||
* @param hi the index after the last element in the range to be reversed
|
||||
*/
|
||||
private static void reverseRange(Object[] a, int lo, int hi) {
|
||||
hi--;
|
||||
while (lo < hi) {
|
||||
Object t = a[lo];
|
||||
a[lo++] = a[hi];
|
||||
a[hi--] = t;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the minimum acceptable run length for an array of the specified
|
||||
* length. Natural runs shorter than this will be extended with
|
||||
* {@link #binarySort}.
|
||||
*
|
||||
* Roughly speaking, the computation is:
|
||||
*
|
||||
* If n < MIN_MERGE, return n (it's too small to bother with fancy stuff).
|
||||
* Else if n is an exact power of 2, return MIN_MERGE/2.
|
||||
* Else return an int k, MIN_MERGE/2 <= k <= MIN_MERGE, such that n/k
|
||||
* is close to, but strictly less than, an exact power of 2.
|
||||
*
|
||||
* For the rationale, see listsort.txt.
|
||||
*
|
||||
* @param n the length of the array to be sorted
|
||||
* @return the length of the minimum run to be merged
|
||||
*/
|
||||
private static int minRunLength(int n) {
|
||||
assert n >= 0;
|
||||
int r = 0; // Becomes 1 if any 1 bits are shifted off
|
||||
while (n >= MIN_MERGE) {
|
||||
r |= (n & 1);
|
||||
n >>= 1;
|
||||
}
|
||||
return n + r;
|
||||
}
|
||||
|
||||
/**
|
||||
* Pushes the specified run onto the pending-run stack.
|
||||
*
|
||||
* @param runBase index of the first element in the run
|
||||
* @param runLen the number of elements in the run
|
||||
*/
|
||||
private void pushRun(int runBase, int runLen) {
|
||||
this.runBase[stackSize] = runBase;
|
||||
this.runLen[stackSize] = runLen;
|
||||
stackSize++;
|
||||
}
|
||||
|
||||
/**
|
||||
* Examines the stack of runs waiting to be merged and merges adjacent runs
|
||||
* until the stack invariants are reestablished:
|
||||
*
|
||||
* 1. runLen[i - 3] > runLen[i - 2] + runLen[i - 1]
|
||||
* 2. runLen[i - 2] > runLen[i - 1]
|
||||
*
|
||||
* This method is called each time a new run is pushed onto the stack,
|
||||
* so the invariants are guaranteed to hold for i < stackSize upon
|
||||
* entry to the method.
|
||||
*/
|
||||
private void mergeCollapse() {
|
||||
while (stackSize > 1) {
|
||||
int n = stackSize - 2;
|
||||
if (n > 0 && runLen[n-1] <= runLen[n] + runLen[n+1]) {
|
||||
if (runLen[n - 1] < runLen[n + 1])
|
||||
n--;
|
||||
mergeAt(n);
|
||||
} else if (runLen[n] <= runLen[n + 1]) {
|
||||
mergeAt(n);
|
||||
} else {
|
||||
break; // Invariant is established
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Merges all runs on the stack until only one remains. This method is
|
||||
* called once, to complete the sort.
|
||||
*/
|
||||
private void mergeForceCollapse() {
|
||||
while (stackSize > 1) {
|
||||
int n = stackSize - 2;
|
||||
if (n > 0 && runLen[n - 1] < runLen[n + 1])
|
||||
n--;
|
||||
mergeAt(n);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Merges the two runs at stack indices i and i+1. Run i must be
|
||||
* the penultimate or antepenultimate run on the stack. In other words,
|
||||
* i must be equal to stackSize-2 or stackSize-3.
|
||||
*
|
||||
* @param i stack index of the first of the two runs to merge
|
||||
*/
|
||||
private void mergeAt(int i) {
|
||||
assert stackSize >= 2;
|
||||
assert i >= 0;
|
||||
assert i == stackSize - 2 || i == stackSize - 3;
|
||||
|
||||
int base1 = runBase[i];
|
||||
int len1 = runLen[i];
|
||||
int base2 = runBase[i + 1];
|
||||
int len2 = runLen[i + 1];
|
||||
assert len1 > 0 && len2 > 0;
|
||||
assert base1 + len1 == base2;
|
||||
|
||||
/*
|
||||
* Record the length of the combined runs; if i is the 3rd-last
|
||||
* run now, also slide over the last run (which isn't involved
|
||||
* in this merge). The current run (i+1) goes away in any case.
|
||||
*/
|
||||
runLen[i] = len1 + len2;
|
||||
if (i == stackSize - 3) {
|
||||
runBase[i + 1] = runBase[i + 2];
|
||||
runLen[i + 1] = runLen[i + 2];
|
||||
}
|
||||
stackSize--;
|
||||
|
||||
/*
|
||||
* Find where the first element of run2 goes in run1. Prior elements
|
||||
* in run1 can be ignored (because they're already in place).
|
||||
*/
|
||||
int k = gallopRight(a[base2], a, base1, len1, 0, c);
|
||||
assert k >= 0;
|
||||
base1 += k;
|
||||
len1 -= k;
|
||||
if (len1 == 0)
|
||||
return;
|
||||
|
||||
/*
|
||||
* Find where the last element of run1 goes in run2. Subsequent elements
|
||||
* in run2 can be ignored (because they're already in place).
|
||||
*/
|
||||
len2 = gallopLeft(a[base1 + len1 - 1], a, base2, len2, len2 - 1, c);
|
||||
assert len2 >= 0;
|
||||
if (len2 == 0)
|
||||
return;
|
||||
|
||||
// Merge remaining runs, using tmp array with min(len1, len2) elements
|
||||
if (len1 <= len2)
|
||||
mergeLo(base1, len1, base2, len2);
|
||||
else
|
||||
mergeHi(base1, len1, base2, len2);
|
||||
}
|
||||
|
||||
/**
|
||||
* Locates the position at which to insert the specified key into the
|
||||
* specified sorted range; if the range contains an element equal to key,
|
||||
* returns the index of the leftmost equal element.
|
||||
*
|
||||
* @param key the key whose insertion point to search for
|
||||
* @param a the array in which to search
|
||||
* @param base the index of the first element in the range
|
||||
* @param len the length of the range; must be > 0
|
||||
* @param hint the index at which to begin the search, 0 <= hint < n.
|
||||
* The closer hint is to the result, the faster this method will run.
|
||||
* @param c the comparator used to order the range, and to search
|
||||
* @return the int k, 0 <= k <= n such that a[b + k - 1] < key <= a[b + k],
|
||||
* pretending that a[b - 1] is minus infinity and a[b + n] is infinity.
|
||||
* In other words, key belongs at index b + k; or in other words,
|
||||
* the first k elements of a should precede key, and the last n - k
|
||||
* should follow it.
|
||||
*/
|
||||
private static <T> int gallopLeft(T key, T[] a, int base, int len, int hint,
|
||||
Comparator<? super T> c) {
|
||||
assert len > 0 && hint >= 0 && hint < len;
|
||||
int lastOfs = 0;
|
||||
int ofs = 1;
|
||||
if (c.compare(key, a[base + hint]) > 0) {
|
||||
// Gallop right until a[base+hint+lastOfs] < key <= a[base+hint+ofs]
|
||||
int maxOfs = len - hint;
|
||||
while (ofs < maxOfs && c.compare(key, a[base + hint + ofs]) > 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to base
|
||||
lastOfs += hint;
|
||||
ofs += hint;
|
||||
} else { // key <= a[base + hint]
|
||||
// Gallop left until a[base+hint-ofs] < key <= a[base+hint-lastOfs]
|
||||
final int maxOfs = hint + 1;
|
||||
while (ofs < maxOfs && c.compare(key, a[base + hint - ofs]) <= 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to base
|
||||
int tmp = lastOfs;
|
||||
lastOfs = hint - ofs;
|
||||
ofs = hint - tmp;
|
||||
}
|
||||
assert -1 <= lastOfs && lastOfs < ofs && ofs <= len;
|
||||
|
||||
/*
|
||||
* Now a[base+lastOfs] < key <= a[base+ofs], so key belongs somewhere
|
||||
* to the right of lastOfs but no farther right than ofs. Do a binary
|
||||
* search, with invariant a[base + lastOfs - 1] < key <= a[base + ofs].
|
||||
*/
|
||||
lastOfs++;
|
||||
while (lastOfs < ofs) {
|
||||
int m = lastOfs + ((ofs - lastOfs) >>> 1);
|
||||
|
||||
if (c.compare(key, a[base + m]) > 0)
|
||||
lastOfs = m + 1; // a[base + m] < key
|
||||
else
|
||||
ofs = m; // key <= a[base + m]
|
||||
}
|
||||
assert lastOfs == ofs; // so a[base + ofs - 1] < key <= a[base + ofs]
|
||||
return ofs;
|
||||
}
|
||||
|
||||
/**
|
||||
* Like gallopLeft, except that if the range contains an element equal to
|
||||
* key, gallopRight returns the index after the rightmost equal element.
|
||||
*
|
||||
* @param key the key whose insertion point to search for
|
||||
* @param a the array in which to search
|
||||
* @param base the index of the first element in the range
|
||||
* @param len the length of the range; must be > 0
|
||||
* @param hint the index at which to begin the search, 0 <= hint < n.
|
||||
* The closer hint is to the result, the faster this method will run.
|
||||
* @param c the comparator used to order the range, and to search
|
||||
* @return the int k, 0 <= k <= n such that a[b + k - 1] <= key < a[b + k]
|
||||
*/
|
||||
private static <T> int gallopRight(T key, T[] a, int base, int len,
|
||||
int hint, Comparator<? super T> c) {
|
||||
assert len > 0 && hint >= 0 && hint < len;
|
||||
|
||||
int ofs = 1;
|
||||
int lastOfs = 0;
|
||||
if (c.compare(key, a[base + hint]) < 0) {
|
||||
// Gallop left until a[b+hint - ofs] <= key < a[b+hint - lastOfs]
|
||||
int maxOfs = hint + 1;
|
||||
while (ofs < maxOfs && c.compare(key, a[base + hint - ofs]) < 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to b
|
||||
int tmp = lastOfs;
|
||||
lastOfs = hint - ofs;
|
||||
ofs = hint - tmp;
|
||||
} else { // a[b + hint] <= key
|
||||
// Gallop right until a[b+hint + lastOfs] <= key < a[b+hint + ofs]
|
||||
int maxOfs = len - hint;
|
||||
while (ofs < maxOfs && c.compare(key, a[base + hint + ofs]) >= 0) {
|
||||
lastOfs = ofs;
|
||||
ofs = (ofs << 1) + 1;
|
||||
if (ofs <= 0) // int overflow
|
||||
ofs = maxOfs;
|
||||
}
|
||||
if (ofs > maxOfs)
|
||||
ofs = maxOfs;
|
||||
|
||||
// Make offsets relative to b
|
||||
lastOfs += hint;
|
||||
ofs += hint;
|
||||
}
|
||||
assert -1 <= lastOfs && lastOfs < ofs && ofs <= len;
|
||||
|
||||
/*
|
||||
* Now a[b + lastOfs] <= key < a[b + ofs], so key belongs somewhere to
|
||||
* the right of lastOfs but no farther right than ofs. Do a binary
|
||||
* search, with invariant a[b + lastOfs - 1] <= key < a[b + ofs].
|
||||
*/
|
||||
lastOfs++;
|
||||
while (lastOfs < ofs) {
|
||||
int m = lastOfs + ((ofs - lastOfs) >>> 1);
|
||||
|
||||
if (c.compare(key, a[base + m]) < 0)
|
||||
ofs = m; // key < a[b + m]
|
||||
else
|
||||
lastOfs = m + 1; // a[b + m] <= key
|
||||
}
|
||||
assert lastOfs == ofs; // so a[b + ofs - 1] <= key < a[b + ofs]
|
||||
return ofs;
|
||||
}
|
||||
|
||||
/**
|
||||
* Merges two adjacent runs in place, in a stable fashion. The first
|
||||
* element of the first run must be greater than the first element of the
|
||||
* second run (a[base1] > a[base2]), and the last element of the first run
|
||||
* (a[base1 + len1-1]) must be greater than all elements of the second run.
|
||||
*
|
||||
* For performance, this method should be called only when len1 <= len2;
|
||||
* its twin, mergeHi should be called if len1 >= len2. (Either method
|
||||
* may be called if len1 == len2.)
|
||||
*
|
||||
* @param base1 index of first element in first run to be merged
|
||||
* @param len1 length of first run to be merged (must be > 0)
|
||||
* @param base2 index of first element in second run to be merged
|
||||
* (must be aBase + aLen)
|
||||
* @param len2 length of second run to be merged (must be > 0)
|
||||
*/
|
||||
private void mergeLo(int base1, int len1, int base2, int len2) {
|
||||
assert len1 > 0 && len2 > 0 && base1 + len1 == base2;
|
||||
|
||||
// Copy first run into temp array
|
||||
T[] a = this.a; // For performance
|
||||
T[] tmp = ensureCapacity(len1);
|
||||
System.arraycopy(a, base1, tmp, 0, len1);
|
||||
|
||||
int cursor1 = 0; // Indexes into tmp array
|
||||
int cursor2 = base2; // Indexes int a
|
||||
int dest = base1; // Indexes int a
|
||||
|
||||
// Move first element of second run and deal with degenerate cases
|
||||
a[dest++] = a[cursor2++];
|
||||
if (--len2 == 0) {
|
||||
System.arraycopy(tmp, cursor1, a, dest, len1);
|
||||
return;
|
||||
}
|
||||
if (len1 == 1) {
|
||||
System.arraycopy(a, cursor2, a, dest, len2);
|
||||
a[dest + len2] = tmp[cursor1]; // Last elt of run 1 to end of merge
|
||||
return;
|
||||
}
|
||||
|
||||
Comparator<? super T> c = this.c; // Use local variable for performance
|
||||
int minGallop = this.minGallop; // " " " " "
|
||||
outer:
|
||||
while (true) {
|
||||
int count1 = 0; // Number of times in a row that first run won
|
||||
int count2 = 0; // Number of times in a row that second run won
|
||||
|
||||
/*
|
||||
* Do the straightforward thing until (if ever) one run starts
|
||||
* winning consistently.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 1 && len2 > 0;
|
||||
if (c.compare(a[cursor2], tmp[cursor1]) < 0) {
|
||||
a[dest++] = a[cursor2++];
|
||||
count2++;
|
||||
count1 = 0;
|
||||
if (--len2 == 0)
|
||||
break outer;
|
||||
} else {
|
||||
a[dest++] = tmp[cursor1++];
|
||||
count1++;
|
||||
count2 = 0;
|
||||
if (--len1 == 1)
|
||||
break outer;
|
||||
}
|
||||
} while ((count1 | count2) < minGallop);
|
||||
|
||||
/*
|
||||
* One run is winning so consistently that galloping may be a
|
||||
* huge win. So try that, and continue galloping until (if ever)
|
||||
* neither run appears to be winning consistently anymore.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 1 && len2 > 0;
|
||||
count1 = gallopRight(a[cursor2], tmp, cursor1, len1, 0, c);
|
||||
if (count1 != 0) {
|
||||
System.arraycopy(tmp, cursor1, a, dest, count1);
|
||||
dest += count1;
|
||||
cursor1 += count1;
|
||||
len1 -= count1;
|
||||
if (len1 <= 1) // len1 == 1 || len1 == 0
|
||||
break outer;
|
||||
}
|
||||
a[dest++] = a[cursor2++];
|
||||
if (--len2 == 0)
|
||||
break outer;
|
||||
|
||||
count2 = gallopLeft(tmp[cursor1], a, cursor2, len2, 0, c);
|
||||
if (count2 != 0) {
|
||||
System.arraycopy(a, cursor2, a, dest, count2);
|
||||
dest += count2;
|
||||
cursor2 += count2;
|
||||
len2 -= count2;
|
||||
if (len2 == 0)
|
||||
break outer;
|
||||
}
|
||||
a[dest++] = tmp[cursor1++];
|
||||
if (--len1 == 1)
|
||||
break outer;
|
||||
minGallop--;
|
||||
} while (count1 >= MIN_GALLOP | count2 >= MIN_GALLOP);
|
||||
if (minGallop < 0)
|
||||
minGallop = 0;
|
||||
minGallop += 2; // Penalize for leaving gallop mode
|
||||
} // End of "outer" loop
|
||||
this.minGallop = minGallop < 1 ? 1 : minGallop; // Write back to field
|
||||
|
||||
if (len1 == 1) {
|
||||
assert len2 > 0;
|
||||
System.arraycopy(a, cursor2, a, dest, len2);
|
||||
a[dest + len2] = tmp[cursor1]; // Last elt of run 1 to end of merge
|
||||
} else if (len1 == 0) {
|
||||
throw new IllegalArgumentException(
|
||||
"Comparison method violates its general contract!");
|
||||
} else {
|
||||
assert len2 == 0;
|
||||
assert len1 > 1;
|
||||
System.arraycopy(tmp, cursor1, a, dest, len1);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Like mergeLo, except that this method should be called only if
|
||||
* len1 >= len2; mergeLo should be called if len1 <= len2. (Either method
|
||||
* may be called if len1 == len2.)
|
||||
*
|
||||
* @param base1 index of first element in first run to be merged
|
||||
* @param len1 length of first run to be merged (must be > 0)
|
||||
* @param base2 index of first element in second run to be merged
|
||||
* (must be aBase + aLen)
|
||||
* @param len2 length of second run to be merged (must be > 0)
|
||||
*/
|
||||
private void mergeHi(int base1, int len1, int base2, int len2) {
|
||||
assert len1 > 0 && len2 > 0 && base1 + len1 == base2;
|
||||
|
||||
// Copy second run into temp array
|
||||
T[] a = this.a; // For performance
|
||||
T[] tmp = ensureCapacity(len2);
|
||||
System.arraycopy(a, base2, tmp, 0, len2);
|
||||
|
||||
int cursor1 = base1 + len1 - 1; // Indexes into a
|
||||
int cursor2 = len2 - 1; // Indexes into tmp array
|
||||
int dest = base2 + len2 - 1; // Indexes into a
|
||||
|
||||
// Move last element of first run and deal with degenerate cases
|
||||
a[dest--] = a[cursor1--];
|
||||
if (--len1 == 0) {
|
||||
System.arraycopy(tmp, 0, a, dest - (len2 - 1), len2);
|
||||
return;
|
||||
}
|
||||
if (len2 == 1) {
|
||||
dest -= len1;
|
||||
cursor1 -= len1;
|
||||
System.arraycopy(a, cursor1 + 1, a, dest + 1, len1);
|
||||
a[dest] = tmp[cursor2];
|
||||
return;
|
||||
}
|
||||
|
||||
Comparator<? super T> c = this.c; // Use local variable for performance
|
||||
int minGallop = this.minGallop; // " " " " "
|
||||
outer:
|
||||
while (true) {
|
||||
int count1 = 0; // Number of times in a row that first run won
|
||||
int count2 = 0; // Number of times in a row that second run won
|
||||
|
||||
/*
|
||||
* Do the straightforward thing until (if ever) one run
|
||||
* appears to win consistently.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 0 && len2 > 1;
|
||||
if (c.compare(tmp[cursor2], a[cursor1]) < 0) {
|
||||
a[dest--] = a[cursor1--];
|
||||
count1++;
|
||||
count2 = 0;
|
||||
if (--len1 == 0)
|
||||
break outer;
|
||||
} else {
|
||||
a[dest--] = tmp[cursor2--];
|
||||
count2++;
|
||||
count1 = 0;
|
||||
if (--len2 == 1)
|
||||
break outer;
|
||||
}
|
||||
} while ((count1 | count2) < minGallop);
|
||||
|
||||
/*
|
||||
* One run is winning so consistently that galloping may be a
|
||||
* huge win. So try that, and continue galloping until (if ever)
|
||||
* neither run appears to be winning consistently anymore.
|
||||
*/
|
||||
do {
|
||||
assert len1 > 0 && len2 > 1;
|
||||
count1 = len1 - gallopRight(tmp[cursor2], a, base1, len1, len1 - 1, c);
|
||||
if (count1 != 0) {
|
||||
dest -= count1;
|
||||
cursor1 -= count1;
|
||||
len1 -= count1;
|
||||
System.arraycopy(a, cursor1 + 1, a, dest + 1, count1);
|
||||
if (len1 == 0)
|
||||
break outer;
|
||||
}
|
||||
a[dest--] = tmp[cursor2--];
|
||||
if (--len2 == 1)
|
||||
break outer;
|
||||
|
||||
count2 = len2 - gallopLeft(a[cursor1], tmp, 0, len2, len2 - 1, c);
|
||||
if (count2 != 0) {
|
||||
dest -= count2;
|
||||
cursor2 -= count2;
|
||||
len2 -= count2;
|
||||
System.arraycopy(tmp, cursor2 + 1, a, dest + 1, count2);
|
||||
if (len2 <= 1) // len2 == 1 || len2 == 0
|
||||
break outer;
|
||||
}
|
||||
a[dest--] = a[cursor1--];
|
||||
if (--len1 == 0)
|
||||
break outer;
|
||||
minGallop--;
|
||||
} while (count1 >= MIN_GALLOP | count2 >= MIN_GALLOP);
|
||||
if (minGallop < 0)
|
||||
minGallop = 0;
|
||||
minGallop += 2; // Penalize for leaving gallop mode
|
||||
} // End of "outer" loop
|
||||
this.minGallop = minGallop < 1 ? 1 : minGallop; // Write back to field
|
||||
|
||||
if (len2 == 1) {
|
||||
assert len1 > 0;
|
||||
dest -= len1;
|
||||
cursor1 -= len1;
|
||||
System.arraycopy(a, cursor1 + 1, a, dest + 1, len1);
|
||||
a[dest] = tmp[cursor2]; // Move first elt of run2 to front of merge
|
||||
} else if (len2 == 0) {
|
||||
throw new IllegalArgumentException(
|
||||
"Comparison method violates its general contract!");
|
||||
} else {
|
||||
assert len1 == 0;
|
||||
assert len2 > 0;
|
||||
System.arraycopy(tmp, 0, a, dest - (len2 - 1), len2);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Ensures that the external array tmp has at least the specified
|
||||
* number of elements, increasing its size if necessary. The size
|
||||
* increases exponentially to ensure amortized linear time complexity.
|
||||
*
|
||||
* @param minCapacity the minimum required capacity of the tmp array
|
||||
* @return tmp, whether or not it grew
|
||||
*/
|
||||
private T[] ensureCapacity(int minCapacity) {
|
||||
if (tmp.length < minCapacity) {
|
||||
// Compute smallest power of 2 > minCapacity
|
||||
int newSize = minCapacity;
|
||||
newSize |= newSize >> 1;
|
||||
newSize |= newSize >> 2;
|
||||
newSize |= newSize >> 4;
|
||||
newSize |= newSize >> 8;
|
||||
newSize |= newSize >> 16;
|
||||
newSize++;
|
||||
|
||||
if (newSize < 0) // Not bloody likely!
|
||||
newSize = minCapacity;
|
||||
else
|
||||
newSize = Math.min(newSize, a.length >>> 1);
|
||||
|
||||
@SuppressWarnings({"unchecked", "UnnecessaryLocalVariable"})
|
||||
T[] newArray = (T[]) new Object[newSize];
|
||||
tmp = newArray;
|
||||
}
|
||||
return tmp;
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks that fromIndex and toIndex are in range, and throws an
|
||||
* appropriate exception if they aren't.
|
||||
*
|
||||
* @param arrayLen the length of the array
|
||||
* @param fromIndex the index of the first element of the range
|
||||
* @param toIndex the index after the last element of the range
|
||||
* @throws IllegalArgumentException if fromIndex > toIndex
|
||||
* @throws ArrayIndexOutOfBoundsException if fromIndex < 0
|
||||
* or toIndex > arrayLen
|
||||
*/
|
||||
private static void rangeCheck(int arrayLen, int fromIndex, int toIndex) {
|
||||
if (fromIndex > toIndex)
|
||||
throw new IllegalArgumentException("fromIndex(" + fromIndex +
|
||||
") > toIndex(" + toIndex+")");
|
||||
if (fromIndex < 0)
|
||||
throw new ArrayIndexOutOfBoundsException(fromIndex);
|
||||
if (toIndex > arrayLen)
|
||||
throw new ArrayIndexOutOfBoundsException(toIndex);
|
||||
}
|
||||
}
|
||||
@ -34,9 +34,13 @@
|
||||
*/
|
||||
|
||||
package java.util.concurrent;
|
||||
import java.util.*;
|
||||
import java.util.concurrent.atomic.*;
|
||||
|
||||
import java.util.AbstractQueue;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.NoSuchElementException;
|
||||
import java.util.Queue;
|
||||
|
||||
/**
|
||||
* An unbounded thread-safe {@linkplain Queue queue} based on linked nodes.
|
||||
@ -47,9 +51,9 @@ import java.util.concurrent.atomic.*;
|
||||
* queue the shortest time. New elements
|
||||
* are inserted at the tail of the queue, and the queue retrieval
|
||||
* operations obtain elements at the head of the queue.
|
||||
* A <tt>ConcurrentLinkedQueue</tt> is an appropriate choice when
|
||||
* A {@code ConcurrentLinkedQueue} is an appropriate choice when
|
||||
* many threads will share access to a common collection.
|
||||
* This queue does not permit <tt>null</tt> elements.
|
||||
* This queue does not permit {@code null} elements.
|
||||
*
|
||||
* <p>This implementation employs an efficient "wait-free"
|
||||
* algorithm based on one described in <a
|
||||
@ -57,7 +61,7 @@ import java.util.concurrent.atomic.*;
|
||||
* Fast, and Practical Non-Blocking and Blocking Concurrent Queue
|
||||
* Algorithms</a> by Maged M. Michael and Michael L. Scott.
|
||||
*
|
||||
* <p>Beware that, unlike in most collections, the <tt>size</tt> method
|
||||
* <p>Beware that, unlike in most collections, the {@code size} method
|
||||
* is <em>NOT</em> a constant-time operation. Because of the
|
||||
* asynchronous nature of these queues, determining the current number
|
||||
* of elements requires a traversal of the elements.
|
||||
@ -87,51 +91,102 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
private static final long serialVersionUID = 196745693267521676L;
|
||||
|
||||
/*
|
||||
* This is a straight adaptation of Michael & Scott algorithm.
|
||||
* For explanation, read the paper. The only (minor) algorithmic
|
||||
* difference is that this version supports lazy deletion of
|
||||
* internal nodes (method remove(Object)) -- remove CAS'es item
|
||||
* fields to null. The normal queue operations unlink but then
|
||||
* pass over nodes with null item fields. Similarly, iteration
|
||||
* methods ignore those with nulls.
|
||||
* This is a modification of the Michael & Scott algorithm,
|
||||
* adapted for a garbage-collected environment, with support for
|
||||
* interior node deletion (to support remove(Object)). For
|
||||
* explanation, read the paper.
|
||||
*
|
||||
* Also note that like most non-blocking algorithms in this
|
||||
* package, this implementation relies on the fact that in garbage
|
||||
* Note that like most non-blocking algorithms in this package,
|
||||
* this implementation relies on the fact that in garbage
|
||||
* collected systems, there is no possibility of ABA problems due
|
||||
* to recycled nodes, so there is no need to use "counted
|
||||
* pointers" or related techniques seen in versions used in
|
||||
* non-GC'ed settings.
|
||||
*
|
||||
* The fundamental invariants are:
|
||||
* - There is exactly one (last) Node with a null next reference,
|
||||
* which is CASed when enqueueing. This last Node can be
|
||||
* reached in O(1) time from tail, but tail is merely an
|
||||
* optimization - it can always be reached in O(N) time from
|
||||
* head as well.
|
||||
* - The elements contained in the queue are the non-null items in
|
||||
* Nodes that are reachable from head. CASing the item
|
||||
* reference of a Node to null atomically removes it from the
|
||||
* queue. Reachability of all elements from head must remain
|
||||
* true even in the case of concurrent modifications that cause
|
||||
* head to advance. A dequeued Node may remain in use
|
||||
* indefinitely due to creation of an Iterator or simply a
|
||||
* poll() that has lost its time slice.
|
||||
*
|
||||
* The above might appear to imply that all Nodes are GC-reachable
|
||||
* from a predecessor dequeued Node. That would cause two problems:
|
||||
* - allow a rogue Iterator to cause unbounded memory retention
|
||||
* - cause cross-generational linking of old Nodes to new Nodes if
|
||||
* a Node was tenured while live, which generational GCs have a
|
||||
* hard time dealing with, causing repeated major collections.
|
||||
* However, only non-deleted Nodes need to be reachable from
|
||||
* dequeued Nodes, and reachability does not necessarily have to
|
||||
* be of the kind understood by the GC. We use the trick of
|
||||
* linking a Node that has just been dequeued to itself. Such a
|
||||
* self-link implicitly means to advance to head.
|
||||
*
|
||||
* Both head and tail are permitted to lag. In fact, failing to
|
||||
* update them every time one could is a significant optimization
|
||||
* (fewer CASes). This is controlled by local "hops" variables
|
||||
* that only trigger helping-CASes after experiencing multiple
|
||||
* lags.
|
||||
*
|
||||
* Since head and tail are updated concurrently and independently,
|
||||
* it is possible for tail to lag behind head (why not)?
|
||||
*
|
||||
* CASing a Node's item reference to null atomically removes the
|
||||
* element from the queue. Iterators skip over Nodes with null
|
||||
* items. Prior implementations of this class had a race between
|
||||
* poll() and remove(Object) where the same element would appear
|
||||
* to be successfully removed by two concurrent operations. The
|
||||
* method remove(Object) also lazily unlinks deleted Nodes, but
|
||||
* this is merely an optimization.
|
||||
*
|
||||
* When constructing a Node (before enqueuing it) we avoid paying
|
||||
* for a volatile write to item by using lazySet instead of a
|
||||
* normal write. This allows the cost of enqueue to be
|
||||
* "one-and-a-half" CASes.
|
||||
*
|
||||
* Both head and tail may or may not point to a Node with a
|
||||
* non-null item. If the queue is empty, all items must of course
|
||||
* be null. Upon creation, both head and tail refer to a dummy
|
||||
* Node with null item. Both head and tail are only updated using
|
||||
* CAS, so they never regress, although again this is merely an
|
||||
* optimization.
|
||||
*/
|
||||
|
||||
private static class Node<E> {
|
||||
private volatile E item;
|
||||
private volatile Node<E> next;
|
||||
|
||||
private static final
|
||||
AtomicReferenceFieldUpdater<Node, Node>
|
||||
nextUpdater =
|
||||
AtomicReferenceFieldUpdater.newUpdater
|
||||
(Node.class, Node.class, "next");
|
||||
private static final
|
||||
AtomicReferenceFieldUpdater<Node, Object>
|
||||
itemUpdater =
|
||||
AtomicReferenceFieldUpdater.newUpdater
|
||||
(Node.class, Object.class, "item");
|
||||
|
||||
Node(E x) { item = x; }
|
||||
|
||||
Node(E x, Node<E> n) { item = x; next = n; }
|
||||
Node(E item) {
|
||||
// Piggyback on imminent casNext()
|
||||
lazySetItem(item);
|
||||
}
|
||||
|
||||
E getItem() {
|
||||
return item;
|
||||
}
|
||||
|
||||
boolean casItem(E cmp, E val) {
|
||||
return itemUpdater.compareAndSet(this, cmp, val);
|
||||
return UNSAFE.compareAndSwapObject(this, itemOffset, cmp, val);
|
||||
}
|
||||
|
||||
void setItem(E val) {
|
||||
itemUpdater.set(this, val);
|
||||
item = val;
|
||||
}
|
||||
|
||||
void lazySetItem(E val) {
|
||||
UNSAFE.putOrderedObject(this, itemOffset, val);
|
||||
}
|
||||
|
||||
void lazySetNext(Node<E> val) {
|
||||
UNSAFE.putOrderedObject(this, nextOffset, val);
|
||||
}
|
||||
|
||||
Node<E> getNext() {
|
||||
@ -139,52 +194,55 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
}
|
||||
|
||||
boolean casNext(Node<E> cmp, Node<E> val) {
|
||||
return nextUpdater.compareAndSet(this, cmp, val);
|
||||
return UNSAFE.compareAndSwapObject(this, nextOffset, cmp, val);
|
||||
}
|
||||
|
||||
void setNext(Node<E> val) {
|
||||
nextUpdater.set(this, val);
|
||||
}
|
||||
// Unsafe mechanics
|
||||
|
||||
private static final sun.misc.Unsafe UNSAFE =
|
||||
sun.misc.Unsafe.getUnsafe();
|
||||
private static final long nextOffset =
|
||||
objectFieldOffset(UNSAFE, "next", Node.class);
|
||||
private static final long itemOffset =
|
||||
objectFieldOffset(UNSAFE, "item", Node.class);
|
||||
}
|
||||
|
||||
private static final
|
||||
AtomicReferenceFieldUpdater<ConcurrentLinkedQueue, Node>
|
||||
tailUpdater =
|
||||
AtomicReferenceFieldUpdater.newUpdater
|
||||
(ConcurrentLinkedQueue.class, Node.class, "tail");
|
||||
private static final
|
||||
AtomicReferenceFieldUpdater<ConcurrentLinkedQueue, Node>
|
||||
headUpdater =
|
||||
AtomicReferenceFieldUpdater.newUpdater
|
||||
(ConcurrentLinkedQueue.class, Node.class, "head");
|
||||
|
||||
private boolean casTail(Node<E> cmp, Node<E> val) {
|
||||
return tailUpdater.compareAndSet(this, cmp, val);
|
||||
}
|
||||
|
||||
private boolean casHead(Node<E> cmp, Node<E> val) {
|
||||
return headUpdater.compareAndSet(this, cmp, val);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Pointer to header node, initialized to a dummy node. The first
|
||||
* actual node is at head.getNext().
|
||||
* A node from which the first live (non-deleted) node (if any)
|
||||
* can be reached in O(1) time.
|
||||
* Invariants:
|
||||
* - all live nodes are reachable from head via succ()
|
||||
* - head != null
|
||||
* - (tmp = head).next != tmp || tmp != head
|
||||
* Non-invariants:
|
||||
* - head.item may or may not be null.
|
||||
* - it is permitted for tail to lag behind head, that is, for tail
|
||||
* to not be reachable from head!
|
||||
*/
|
||||
private transient volatile Node<E> head = new Node<E>(null, null);
|
||||
private transient volatile Node<E> head = new Node<E>(null);
|
||||
|
||||
/** Pointer to last node on list **/
|
||||
/**
|
||||
* A node from which the last node on list (that is, the unique
|
||||
* node with node.next == null) can be reached in O(1) time.
|
||||
* Invariants:
|
||||
* - the last node is always reachable from tail via succ()
|
||||
* - tail != null
|
||||
* Non-invariants:
|
||||
* - tail.item may or may not be null.
|
||||
* - it is permitted for tail to lag behind head, that is, for tail
|
||||
* to not be reachable from head!
|
||||
* - tail.next may or may not be self-pointing to tail.
|
||||
*/
|
||||
private transient volatile Node<E> tail = head;
|
||||
|
||||
|
||||
/**
|
||||
* Creates a <tt>ConcurrentLinkedQueue</tt> that is initially empty.
|
||||
* Creates a {@code ConcurrentLinkedQueue} that is initially empty.
|
||||
*/
|
||||
public ConcurrentLinkedQueue() {}
|
||||
|
||||
/**
|
||||
* Creates a <tt>ConcurrentLinkedQueue</tt>
|
||||
* Creates a {@code ConcurrentLinkedQueue}
|
||||
* initially containing the elements of the given collection,
|
||||
* added in traversal order of the collection's iterator.
|
||||
* @param c the collection of elements to initially contain
|
||||
@ -201,115 +259,143 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
/**
|
||||
* Inserts the specified element at the tail of this queue.
|
||||
*
|
||||
* @return <tt>true</tt> (as specified by {@link Collection#add})
|
||||
* @return {@code true} (as specified by {@link Collection#add})
|
||||
* @throws NullPointerException if the specified element is null
|
||||
*/
|
||||
public boolean add(E e) {
|
||||
return offer(e);
|
||||
}
|
||||
|
||||
/**
|
||||
* We don't bother to update head or tail pointers if fewer than
|
||||
* HOPS links from "true" location. We assume that volatile
|
||||
* writes are significantly more expensive than volatile reads.
|
||||
*/
|
||||
private static final int HOPS = 1;
|
||||
|
||||
/**
|
||||
* Try to CAS head to p. If successful, repoint old head to itself
|
||||
* as sentinel for succ(), below.
|
||||
*/
|
||||
final void updateHead(Node<E> h, Node<E> p) {
|
||||
if (h != p && casHead(h, p))
|
||||
h.lazySetNext(h);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the successor of p, or the head node if p.next has been
|
||||
* linked to self, which will only be true if traversing with a
|
||||
* stale pointer that is now off the list.
|
||||
*/
|
||||
final Node<E> succ(Node<E> p) {
|
||||
Node<E> next = p.getNext();
|
||||
return (p == next) ? head : next;
|
||||
}
|
||||
|
||||
/**
|
||||
* Inserts the specified element at the tail of this queue.
|
||||
*
|
||||
* @return <tt>true</tt> (as specified by {@link Queue#offer})
|
||||
* @return {@code true} (as specified by {@link Queue#offer})
|
||||
* @throws NullPointerException if the specified element is null
|
||||
*/
|
||||
public boolean offer(E e) {
|
||||
if (e == null) throw new NullPointerException();
|
||||
Node<E> n = new Node<E>(e, null);
|
||||
Node<E> n = new Node<E>(e);
|
||||
retry:
|
||||
for (;;) {
|
||||
Node<E> t = tail;
|
||||
Node<E> s = t.getNext();
|
||||
if (t == tail) {
|
||||
if (s == null) {
|
||||
if (t.casNext(s, n)) {
|
||||
casTail(t, n);
|
||||
return true;
|
||||
}
|
||||
Node<E> p = t;
|
||||
for (int hops = 0; ; hops++) {
|
||||
Node<E> next = succ(p);
|
||||
if (next != null) {
|
||||
if (hops > HOPS && t != tail)
|
||||
continue retry;
|
||||
p = next;
|
||||
} else if (p.casNext(null, n)) {
|
||||
if (hops >= HOPS)
|
||||
casTail(t, n); // Failure is OK.
|
||||
return true;
|
||||
} else {
|
||||
casTail(t, s);
|
||||
p = succ(p);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public E poll() {
|
||||
for (;;) {
|
||||
Node<E> h = head;
|
||||
Node<E> t = tail;
|
||||
Node<E> first = h.getNext();
|
||||
if (h == head) {
|
||||
if (h == t) {
|
||||
if (first == null)
|
||||
return null;
|
||||
else
|
||||
casTail(t, first);
|
||||
} else if (casHead(h, first)) {
|
||||
E item = first.getItem();
|
||||
if (item != null) {
|
||||
first.setItem(null);
|
||||
return item;
|
||||
}
|
||||
// else skip over deleted item, continue loop,
|
||||
Node<E> h = head;
|
||||
Node<E> p = h;
|
||||
for (int hops = 0; ; hops++) {
|
||||
E item = p.getItem();
|
||||
|
||||
if (item != null && p.casItem(item, null)) {
|
||||
if (hops >= HOPS) {
|
||||
Node<E> q = p.getNext();
|
||||
updateHead(h, (q != null) ? q : p);
|
||||
}
|
||||
return item;
|
||||
}
|
||||
Node<E> next = succ(p);
|
||||
if (next == null) {
|
||||
updateHead(h, p);
|
||||
break;
|
||||
}
|
||||
p = next;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
public E peek() { // same as poll except don't remove item
|
||||
public E peek() {
|
||||
Node<E> h = head;
|
||||
Node<E> p = h;
|
||||
E item;
|
||||
for (;;) {
|
||||
Node<E> h = head;
|
||||
Node<E> t = tail;
|
||||
Node<E> first = h.getNext();
|
||||
if (h == head) {
|
||||
if (h == t) {
|
||||
if (first == null)
|
||||
return null;
|
||||
else
|
||||
casTail(t, first);
|
||||
} else {
|
||||
E item = first.getItem();
|
||||
if (item != null)
|
||||
return item;
|
||||
else // remove deleted node and continue
|
||||
casHead(h, first);
|
||||
}
|
||||
item = p.getItem();
|
||||
if (item != null)
|
||||
break;
|
||||
Node<E> next = succ(p);
|
||||
if (next == null) {
|
||||
break;
|
||||
}
|
||||
p = next;
|
||||
}
|
||||
updateHead(h, p);
|
||||
return item;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the first actual (non-header) node on list. This is yet
|
||||
* another variant of poll/peek; here returning out the first
|
||||
* node, not element (so we cannot collapse with peek() without
|
||||
* introducing race.)
|
||||
* Returns the first live (non-deleted) node on list, or null if none.
|
||||
* This is yet another variant of poll/peek; here returning the
|
||||
* first node, not element. We could make peek() a wrapper around
|
||||
* first(), but that would cost an extra volatile read of item,
|
||||
* and the need to add a retry loop to deal with the possibility
|
||||
* of losing a race to a concurrent poll().
|
||||
*/
|
||||
Node<E> first() {
|
||||
Node<E> h = head;
|
||||
Node<E> p = h;
|
||||
Node<E> result;
|
||||
for (;;) {
|
||||
Node<E> h = head;
|
||||
Node<E> t = tail;
|
||||
Node<E> first = h.getNext();
|
||||
if (h == head) {
|
||||
if (h == t) {
|
||||
if (first == null)
|
||||
return null;
|
||||
else
|
||||
casTail(t, first);
|
||||
} else {
|
||||
if (first.getItem() != null)
|
||||
return first;
|
||||
else // remove deleted node and continue
|
||||
casHead(h, first);
|
||||
}
|
||||
E item = p.getItem();
|
||||
if (item != null) {
|
||||
result = p;
|
||||
break;
|
||||
}
|
||||
Node<E> next = succ(p);
|
||||
if (next == null) {
|
||||
result = null;
|
||||
break;
|
||||
}
|
||||
p = next;
|
||||
}
|
||||
updateHead(h, p);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Returns <tt>true</tt> if this queue contains no elements.
|
||||
* Returns {@code true} if this queue contains no elements.
|
||||
*
|
||||
* @return <tt>true</tt> if this queue contains no elements
|
||||
* @return {@code true} if this queue contains no elements
|
||||
*/
|
||||
public boolean isEmpty() {
|
||||
return first() == null;
|
||||
@ -317,8 +403,8 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
|
||||
/**
|
||||
* Returns the number of elements in this queue. If this queue
|
||||
* contains more than <tt>Integer.MAX_VALUE</tt> elements, returns
|
||||
* <tt>Integer.MAX_VALUE</tt>.
|
||||
* contains more than {@code Integer.MAX_VALUE} elements, returns
|
||||
* {@code Integer.MAX_VALUE}.
|
||||
*
|
||||
* <p>Beware that, unlike in most collections, this method is
|
||||
* <em>NOT</em> a constant-time operation. Because of the
|
||||
@ -329,7 +415,7 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
*/
|
||||
public int size() {
|
||||
int count = 0;
|
||||
for (Node<E> p = first(); p != null; p = p.getNext()) {
|
||||
for (Node<E> p = first(); p != null; p = succ(p)) {
|
||||
if (p.getItem() != null) {
|
||||
// Collections.size() spec says to max out
|
||||
if (++count == Integer.MAX_VALUE)
|
||||
@ -340,16 +426,16 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns <tt>true</tt> if this queue contains the specified element.
|
||||
* More formally, returns <tt>true</tt> if and only if this queue contains
|
||||
* at least one element <tt>e</tt> such that <tt>o.equals(e)</tt>.
|
||||
* Returns {@code true} if this queue contains the specified element.
|
||||
* More formally, returns {@code true} if and only if this queue contains
|
||||
* at least one element {@code e} such that {@code o.equals(e)}.
|
||||
*
|
||||
* @param o object to be checked for containment in this queue
|
||||
* @return <tt>true</tt> if this queue contains the specified element
|
||||
* @return {@code true} if this queue contains the specified element
|
||||
*/
|
||||
public boolean contains(Object o) {
|
||||
if (o == null) return false;
|
||||
for (Node<E> p = first(); p != null; p = p.getNext()) {
|
||||
for (Node<E> p = first(); p != null; p = succ(p)) {
|
||||
E item = p.getItem();
|
||||
if (item != null &&
|
||||
o.equals(item))
|
||||
@ -360,23 +446,29 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
|
||||
/**
|
||||
* Removes a single instance of the specified element from this queue,
|
||||
* if it is present. More formally, removes an element <tt>e</tt> such
|
||||
* that <tt>o.equals(e)</tt>, if this queue contains one or more such
|
||||
* if it is present. More formally, removes an element {@code e} such
|
||||
* that {@code o.equals(e)}, if this queue contains one or more such
|
||||
* elements.
|
||||
* Returns <tt>true</tt> if this queue contained the specified element
|
||||
* Returns {@code true} if this queue contained the specified element
|
||||
* (or equivalently, if this queue changed as a result of the call).
|
||||
*
|
||||
* @param o element to be removed from this queue, if present
|
||||
* @return <tt>true</tt> if this queue changed as a result of the call
|
||||
* @return {@code true} if this queue changed as a result of the call
|
||||
*/
|
||||
public boolean remove(Object o) {
|
||||
if (o == null) return false;
|
||||
for (Node<E> p = first(); p != null; p = p.getNext()) {
|
||||
Node<E> pred = null;
|
||||
for (Node<E> p = first(); p != null; p = succ(p)) {
|
||||
E item = p.getItem();
|
||||
if (item != null &&
|
||||
o.equals(item) &&
|
||||
p.casItem(item, null))
|
||||
p.casItem(item, null)) {
|
||||
Node<E> next = succ(p);
|
||||
if (pred != null && next != null)
|
||||
pred.casNext(p, next);
|
||||
return true;
|
||||
}
|
||||
pred = p;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
@ -397,7 +489,7 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
public Object[] toArray() {
|
||||
// Use ArrayList to deal with resizing.
|
||||
ArrayList<E> al = new ArrayList<E>();
|
||||
for (Node<E> p = first(); p != null; p = p.getNext()) {
|
||||
for (Node<E> p = first(); p != null; p = succ(p)) {
|
||||
E item = p.getItem();
|
||||
if (item != null)
|
||||
al.add(item);
|
||||
@ -415,22 +507,22 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
* <p>If this queue fits in the specified array with room to spare
|
||||
* (i.e., the array has more elements than this queue), the element in
|
||||
* the array immediately following the end of the queue is set to
|
||||
* <tt>null</tt>.
|
||||
* {@code null}.
|
||||
*
|
||||
* <p>Like the {@link #toArray()} method, this method acts as bridge between
|
||||
* array-based and collection-based APIs. Further, this method allows
|
||||
* precise control over the runtime type of the output array, and may,
|
||||
* under certain circumstances, be used to save allocation costs.
|
||||
*
|
||||
* <p>Suppose <tt>x</tt> is a queue known to contain only strings.
|
||||
* <p>Suppose {@code x} is a queue known to contain only strings.
|
||||
* The following code can be used to dump the queue into a newly
|
||||
* allocated array of <tt>String</tt>:
|
||||
* allocated array of {@code String}:
|
||||
*
|
||||
* <pre>
|
||||
* String[] y = x.toArray(new String[0]);</pre>
|
||||
*
|
||||
* Note that <tt>toArray(new Object[0])</tt> is identical in function to
|
||||
* <tt>toArray()</tt>.
|
||||
* Note that {@code toArray(new Object[0])} is identical in function to
|
||||
* {@code toArray()}.
|
||||
*
|
||||
* @param a the array into which the elements of the queue are to
|
||||
* be stored, if it is big enough; otherwise, a new array of the
|
||||
@ -441,11 +533,12 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
* this queue
|
||||
* @throws NullPointerException if the specified array is null
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
public <T> T[] toArray(T[] a) {
|
||||
// try to use sent-in array
|
||||
int k = 0;
|
||||
Node<E> p;
|
||||
for (p = first(); p != null && k < a.length; p = p.getNext()) {
|
||||
for (p = first(); p != null && k < a.length; p = succ(p)) {
|
||||
E item = p.getItem();
|
||||
if (item != null)
|
||||
a[k++] = (T)item;
|
||||
@ -458,7 +551,7 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
|
||||
// If won't fit, use ArrayList version
|
||||
ArrayList<E> al = new ArrayList<E>();
|
||||
for (Node<E> q = first(); q != null; q = q.getNext()) {
|
||||
for (Node<E> q = first(); q != null; q = succ(q)) {
|
||||
E item = q.getItem();
|
||||
if (item != null)
|
||||
al.add(item);
|
||||
@ -469,7 +562,8 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
/**
|
||||
* Returns an iterator over the elements in this queue in proper sequence.
|
||||
* The returned iterator is a "weakly consistent" iterator that
|
||||
* will never throw {@link ConcurrentModificationException},
|
||||
* will never throw {@link java.util.ConcurrentModificationException
|
||||
* ConcurrentModificationException},
|
||||
* and guarantees to traverse elements as they existed upon
|
||||
* construction of the iterator, and may (but is not guaranteed to)
|
||||
* reflect any modifications subsequent to construction.
|
||||
@ -511,7 +605,15 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
lastRet = nextNode;
|
||||
E x = nextItem;
|
||||
|
||||
Node<E> p = (nextNode == null)? first() : nextNode.getNext();
|
||||
Node<E> pred, p;
|
||||
if (nextNode == null) {
|
||||
p = first();
|
||||
pred = null;
|
||||
} else {
|
||||
pred = nextNode;
|
||||
p = succ(nextNode);
|
||||
}
|
||||
|
||||
for (;;) {
|
||||
if (p == null) {
|
||||
nextNode = null;
|
||||
@ -523,8 +625,13 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
nextNode = p;
|
||||
nextItem = item;
|
||||
return x;
|
||||
} else // skip over nulls
|
||||
p = p.getNext();
|
||||
} else {
|
||||
// skip over nulls
|
||||
Node<E> next = succ(p);
|
||||
if (pred != null && next != null)
|
||||
pred.casNext(p, next);
|
||||
p = next;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -549,7 +656,7 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
/**
|
||||
* Save the state to a stream (that is, serialize it).
|
||||
*
|
||||
* @serialData All of the elements (each an <tt>E</tt>) in
|
||||
* @serialData All of the elements (each an {@code E}) in
|
||||
* the proper order, followed by a null
|
||||
* @param s the stream
|
||||
*/
|
||||
@ -560,7 +667,7 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
s.defaultWriteObject();
|
||||
|
||||
// Write out all elements in the proper order.
|
||||
for (Node<E> p = first(); p != null; p = p.getNext()) {
|
||||
for (Node<E> p = first(); p != null; p = succ(p)) {
|
||||
Object item = p.getItem();
|
||||
if (item != null)
|
||||
s.writeObject(item);
|
||||
@ -579,10 +686,11 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
throws java.io.IOException, ClassNotFoundException {
|
||||
// Read in capacity, and any hidden stuff
|
||||
s.defaultReadObject();
|
||||
head = new Node<E>(null, null);
|
||||
head = new Node<E>(null);
|
||||
tail = head;
|
||||
// Read in all elements and place in queue
|
||||
for (;;) {
|
||||
@SuppressWarnings("unchecked")
|
||||
E item = (E)s.readObject();
|
||||
if (item == null)
|
||||
break;
|
||||
@ -591,4 +699,35 @@ public class ConcurrentLinkedQueue<E> extends AbstractQueue<E>
|
||||
}
|
||||
}
|
||||
|
||||
// Unsafe mechanics
|
||||
|
||||
private static final sun.misc.Unsafe UNSAFE = sun.misc.Unsafe.getUnsafe();
|
||||
private static final long headOffset =
|
||||
objectFieldOffset(UNSAFE, "head", ConcurrentLinkedQueue.class);
|
||||
private static final long tailOffset =
|
||||
objectFieldOffset(UNSAFE, "tail", ConcurrentLinkedQueue.class);
|
||||
|
||||
private boolean casTail(Node<E> cmp, Node<E> val) {
|
||||
return UNSAFE.compareAndSwapObject(this, tailOffset, cmp, val);
|
||||
}
|
||||
|
||||
private boolean casHead(Node<E> cmp, Node<E> val) {
|
||||
return UNSAFE.compareAndSwapObject(this, headOffset, cmp, val);
|
||||
}
|
||||
|
||||
private void lazySetHead(Node<E> val) {
|
||||
UNSAFE.putOrderedObject(this, headOffset, val);
|
||||
}
|
||||
|
||||
static long objectFieldOffset(sun.misc.Unsafe UNSAFE,
|
||||
String field, Class<?> klazz) {
|
||||
try {
|
||||
return UNSAFE.objectFieldOffset(klazz.getDeclaredField(field));
|
||||
} catch (NoSuchFieldException e) {
|
||||
// Convert Exception to corresponding Error
|
||||
NoSuchFieldError error = new NoSuchFieldError(field);
|
||||
error.initCause(e);
|
||||
throw error;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -34,8 +34,13 @@
|
||||
*/
|
||||
|
||||
package java.util.concurrent;
|
||||
import java.util.*;
|
||||
import java.util.concurrent.locks.*;
|
||||
|
||||
import java.util.AbstractQueue;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.NoSuchElementException;
|
||||
import java.util.concurrent.locks.Condition;
|
||||
import java.util.concurrent.locks.ReentrantLock;
|
||||
|
||||
/**
|
||||
* An optionally-bounded {@linkplain BlockingDeque blocking deque} based on
|
||||
@ -73,6 +78,20 @@ public class LinkedBlockingDeque<E>
|
||||
/*
|
||||
* Implemented as a simple doubly-linked list protected by a
|
||||
* single lock and using conditions to manage blocking.
|
||||
*
|
||||
* To implement weakly consistent iterators, it appears we need to
|
||||
* keep all Nodes GC-reachable from a predecessor dequeued Node.
|
||||
* That would cause two problems:
|
||||
* - allow a rogue Iterator to cause unbounded memory retention
|
||||
* - cause cross-generational linking of old Nodes to new Nodes if
|
||||
* a Node was tenured while live, which generational GCs have a
|
||||
* hard time dealing with, causing repeated major collections.
|
||||
* However, only non-deleted Nodes need to be reachable from
|
||||
* dequeued Nodes, and reachability does not necessarily have to
|
||||
* be of the kind understood by the GC. We use the trick of
|
||||
* linking a Node that has just been dequeued to itself. Such a
|
||||
* self-link implicitly means to jump to "first" (for next links)
|
||||
* or "last" (for prev links).
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -86,9 +105,27 @@ public class LinkedBlockingDeque<E>
|
||||
|
||||
/** Doubly-linked list node class */
|
||||
static final class Node<E> {
|
||||
/**
|
||||
* The item, or null if this node has been removed.
|
||||
*/
|
||||
E item;
|
||||
|
||||
/**
|
||||
* One of:
|
||||
* - the real predecessor Node
|
||||
* - this Node, meaning the predecessor is tail
|
||||
* - null, meaning there is no predecessor
|
||||
*/
|
||||
Node<E> prev;
|
||||
|
||||
/**
|
||||
* One of:
|
||||
* - the real successor Node
|
||||
* - this Node, meaning the successor is head
|
||||
* - null, meaning there is no successor
|
||||
*/
|
||||
Node<E> next;
|
||||
|
||||
Node(E x, Node<E> p, Node<E> n) {
|
||||
item = x;
|
||||
prev = p;
|
||||
@ -96,23 +133,37 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
}
|
||||
|
||||
/** Pointer to first node */
|
||||
private transient Node<E> first;
|
||||
/** Pointer to last node */
|
||||
private transient Node<E> last;
|
||||
/**
|
||||
* Pointer to first node.
|
||||
* Invariant: (first == null && last == null) ||
|
||||
* (first.prev == null && first.item != null)
|
||||
*/
|
||||
transient Node<E> first;
|
||||
|
||||
/**
|
||||
* Pointer to last node.
|
||||
* Invariant: (first == null && last == null) ||
|
||||
* (last.next == null && last.item != null)
|
||||
*/
|
||||
transient Node<E> last;
|
||||
|
||||
/** Number of items in the deque */
|
||||
private transient int count;
|
||||
|
||||
/** Maximum number of items in the deque */
|
||||
private final int capacity;
|
||||
|
||||
/** Main lock guarding all access */
|
||||
private final ReentrantLock lock = new ReentrantLock();
|
||||
final ReentrantLock lock = new ReentrantLock();
|
||||
|
||||
/** Condition for waiting takes */
|
||||
private final Condition notEmpty = lock.newCondition();
|
||||
|
||||
/** Condition for waiting puts */
|
||||
private final Condition notFull = lock.newCondition();
|
||||
|
||||
/**
|
||||
* Creates a <tt>LinkedBlockingDeque</tt> with a capacity of
|
||||
* Creates a {@code LinkedBlockingDeque} with a capacity of
|
||||
* {@link Integer#MAX_VALUE}.
|
||||
*/
|
||||
public LinkedBlockingDeque() {
|
||||
@ -120,10 +171,10 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a <tt>LinkedBlockingDeque</tt> with the given (fixed) capacity.
|
||||
* Creates a {@code LinkedBlockingDeque} with the given (fixed) capacity.
|
||||
*
|
||||
* @param capacity the capacity of this deque
|
||||
* @throws IllegalArgumentException if <tt>capacity</tt> is less than 1
|
||||
* @throws IllegalArgumentException if {@code capacity} is less than 1
|
||||
*/
|
||||
public LinkedBlockingDeque(int capacity) {
|
||||
if (capacity <= 0) throw new IllegalArgumentException();
|
||||
@ -131,7 +182,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a <tt>LinkedBlockingDeque</tt> with a capacity of
|
||||
* Creates a {@code LinkedBlockingDeque} with a capacity of
|
||||
* {@link Integer#MAX_VALUE}, initially containing the elements of
|
||||
* the given collection, added in traversal order of the
|
||||
* collection's iterator.
|
||||
@ -142,8 +193,18 @@ public class LinkedBlockingDeque<E>
|
||||
*/
|
||||
public LinkedBlockingDeque(Collection<? extends E> c) {
|
||||
this(Integer.MAX_VALUE);
|
||||
for (E e : c)
|
||||
add(e);
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock(); // Never contended, but necessary for visibility
|
||||
try {
|
||||
for (E e : c) {
|
||||
if (e == null)
|
||||
throw new NullPointerException();
|
||||
if (!linkLast(e))
|
||||
throw new IllegalStateException("Deque full");
|
||||
}
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -153,9 +214,9 @@ public class LinkedBlockingDeque<E>
|
||||
* Links e as first element, or returns false if full.
|
||||
*/
|
||||
private boolean linkFirst(E e) {
|
||||
// assert lock.isHeldByCurrentThread();
|
||||
if (count >= capacity)
|
||||
return false;
|
||||
++count;
|
||||
Node<E> f = first;
|
||||
Node<E> x = new Node<E>(e, null, f);
|
||||
first = x;
|
||||
@ -163,6 +224,7 @@ public class LinkedBlockingDeque<E>
|
||||
last = x;
|
||||
else
|
||||
f.prev = x;
|
||||
++count;
|
||||
notEmpty.signal();
|
||||
return true;
|
||||
}
|
||||
@ -171,9 +233,9 @@ public class LinkedBlockingDeque<E>
|
||||
* Links e as last element, or returns false if full.
|
||||
*/
|
||||
private boolean linkLast(E e) {
|
||||
// assert lock.isHeldByCurrentThread();
|
||||
if (count >= capacity)
|
||||
return false;
|
||||
++count;
|
||||
Node<E> l = last;
|
||||
Node<E> x = new Node<E>(e, l, null);
|
||||
last = x;
|
||||
@ -181,6 +243,7 @@ public class LinkedBlockingDeque<E>
|
||||
first = x;
|
||||
else
|
||||
l.next = x;
|
||||
++count;
|
||||
notEmpty.signal();
|
||||
return true;
|
||||
}
|
||||
@ -189,10 +252,14 @@ public class LinkedBlockingDeque<E>
|
||||
* Removes and returns first element, or null if empty.
|
||||
*/
|
||||
private E unlinkFirst() {
|
||||
// assert lock.isHeldByCurrentThread();
|
||||
Node<E> f = first;
|
||||
if (f == null)
|
||||
return null;
|
||||
Node<E> n = f.next;
|
||||
E item = f.item;
|
||||
f.item = null;
|
||||
f.next = f; // help GC
|
||||
first = n;
|
||||
if (n == null)
|
||||
last = null;
|
||||
@ -200,17 +267,21 @@ public class LinkedBlockingDeque<E>
|
||||
n.prev = null;
|
||||
--count;
|
||||
notFull.signal();
|
||||
return f.item;
|
||||
return item;
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes and returns last element, or null if empty.
|
||||
*/
|
||||
private E unlinkLast() {
|
||||
// assert lock.isHeldByCurrentThread();
|
||||
Node<E> l = last;
|
||||
if (l == null)
|
||||
return null;
|
||||
Node<E> p = l.prev;
|
||||
E item = l.item;
|
||||
l.item = null;
|
||||
l.prev = l; // help GC
|
||||
last = p;
|
||||
if (p == null)
|
||||
first = null;
|
||||
@ -218,31 +289,29 @@ public class LinkedBlockingDeque<E>
|
||||
p.next = null;
|
||||
--count;
|
||||
notFull.signal();
|
||||
return l.item;
|
||||
return item;
|
||||
}
|
||||
|
||||
/**
|
||||
* Unlink e
|
||||
* Unlinks x.
|
||||
*/
|
||||
private void unlink(Node<E> x) {
|
||||
void unlink(Node<E> x) {
|
||||
// assert lock.isHeldByCurrentThread();
|
||||
Node<E> p = x.prev;
|
||||
Node<E> n = x.next;
|
||||
if (p == null) {
|
||||
if (n == null)
|
||||
first = last = null;
|
||||
else {
|
||||
n.prev = null;
|
||||
first = n;
|
||||
}
|
||||
unlinkFirst();
|
||||
} else if (n == null) {
|
||||
p.next = null;
|
||||
last = p;
|
||||
unlinkLast();
|
||||
} else {
|
||||
p.next = n;
|
||||
n.prev = p;
|
||||
x.item = null;
|
||||
// Don't mess with x's links. They may still be in use by
|
||||
// an iterator.
|
||||
--count;
|
||||
notFull.signal();
|
||||
}
|
||||
--count;
|
||||
notFull.signalAll();
|
||||
}
|
||||
|
||||
// BlockingDeque methods
|
||||
@ -270,6 +339,7 @@ public class LinkedBlockingDeque<E>
|
||||
*/
|
||||
public boolean offerFirst(E e) {
|
||||
if (e == null) throw new NullPointerException();
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return linkFirst(e);
|
||||
@ -283,6 +353,7 @@ public class LinkedBlockingDeque<E>
|
||||
*/
|
||||
public boolean offerLast(E e) {
|
||||
if (e == null) throw new NullPointerException();
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return linkLast(e);
|
||||
@ -297,6 +368,7 @@ public class LinkedBlockingDeque<E>
|
||||
*/
|
||||
public void putFirst(E e) throws InterruptedException {
|
||||
if (e == null) throw new NullPointerException();
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
while (!linkFirst(e))
|
||||
@ -312,6 +384,7 @@ public class LinkedBlockingDeque<E>
|
||||
*/
|
||||
public void putLast(E e) throws InterruptedException {
|
||||
if (e == null) throw new NullPointerException();
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
while (!linkLast(e))
|
||||
@ -329,15 +402,15 @@ public class LinkedBlockingDeque<E>
|
||||
throws InterruptedException {
|
||||
if (e == null) throw new NullPointerException();
|
||||
long nanos = unit.toNanos(timeout);
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lockInterruptibly();
|
||||
try {
|
||||
for (;;) {
|
||||
if (linkFirst(e))
|
||||
return true;
|
||||
while (!linkFirst(e)) {
|
||||
if (nanos <= 0)
|
||||
return false;
|
||||
nanos = notFull.awaitNanos(nanos);
|
||||
}
|
||||
return true;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
@ -351,15 +424,15 @@ public class LinkedBlockingDeque<E>
|
||||
throws InterruptedException {
|
||||
if (e == null) throw new NullPointerException();
|
||||
long nanos = unit.toNanos(timeout);
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lockInterruptibly();
|
||||
try {
|
||||
for (;;) {
|
||||
if (linkLast(e))
|
||||
return true;
|
||||
while (!linkLast(e)) {
|
||||
if (nanos <= 0)
|
||||
return false;
|
||||
nanos = notFull.awaitNanos(nanos);
|
||||
}
|
||||
return true;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
@ -384,6 +457,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
public E pollFirst() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return unlinkFirst();
|
||||
@ -393,6 +467,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
public E pollLast() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return unlinkLast();
|
||||
@ -402,6 +477,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
public E takeFirst() throws InterruptedException {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
E x;
|
||||
@ -414,6 +490,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
public E takeLast() throws InterruptedException {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
E x;
|
||||
@ -428,16 +505,16 @@ public class LinkedBlockingDeque<E>
|
||||
public E pollFirst(long timeout, TimeUnit unit)
|
||||
throws InterruptedException {
|
||||
long nanos = unit.toNanos(timeout);
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lockInterruptibly();
|
||||
try {
|
||||
for (;;) {
|
||||
E x = unlinkFirst();
|
||||
if (x != null)
|
||||
return x;
|
||||
E x;
|
||||
while ( (x = unlinkFirst()) == null) {
|
||||
if (nanos <= 0)
|
||||
return null;
|
||||
nanos = notEmpty.awaitNanos(nanos);
|
||||
}
|
||||
return x;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
@ -446,16 +523,16 @@ public class LinkedBlockingDeque<E>
|
||||
public E pollLast(long timeout, TimeUnit unit)
|
||||
throws InterruptedException {
|
||||
long nanos = unit.toNanos(timeout);
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lockInterruptibly();
|
||||
try {
|
||||
for (;;) {
|
||||
E x = unlinkLast();
|
||||
if (x != null)
|
||||
return x;
|
||||
E x;
|
||||
while ( (x = unlinkLast()) == null) {
|
||||
if (nanos <= 0)
|
||||
return null;
|
||||
nanos = notEmpty.awaitNanos(nanos);
|
||||
}
|
||||
return x;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
@ -480,6 +557,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
public E peekFirst() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return (first == null) ? null : first.item;
|
||||
@ -489,6 +567,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
public E peekLast() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return (last == null) ? null : last.item;
|
||||
@ -499,6 +578,7 @@ public class LinkedBlockingDeque<E>
|
||||
|
||||
public boolean removeFirstOccurrence(Object o) {
|
||||
if (o == null) return false;
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
for (Node<E> p = first; p != null; p = p.next) {
|
||||
@ -515,6 +595,7 @@ public class LinkedBlockingDeque<E>
|
||||
|
||||
public boolean removeLastOccurrence(Object o) {
|
||||
if (o == null) return false;
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
for (Node<E> p = last; p != null; p = p.prev) {
|
||||
@ -619,14 +700,15 @@ public class LinkedBlockingDeque<E>
|
||||
* Returns the number of additional elements that this deque can ideally
|
||||
* (in the absence of memory or resource constraints) accept without
|
||||
* blocking. This is always equal to the initial capacity of this deque
|
||||
* less the current <tt>size</tt> of this deque.
|
||||
* less the current {@code size} of this deque.
|
||||
*
|
||||
* <p>Note that you <em>cannot</em> always tell if an attempt to insert
|
||||
* an element will succeed by inspecting <tt>remainingCapacity</tt>
|
||||
* an element will succeed by inspecting {@code remainingCapacity}
|
||||
* because it may be the case that another thread is about to
|
||||
* insert or remove an element.
|
||||
*/
|
||||
public int remainingCapacity() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return capacity - count;
|
||||
@ -642,22 +724,7 @@ public class LinkedBlockingDeque<E>
|
||||
* @throws IllegalArgumentException {@inheritDoc}
|
||||
*/
|
||||
public int drainTo(Collection<? super E> c) {
|
||||
if (c == null)
|
||||
throw new NullPointerException();
|
||||
if (c == this)
|
||||
throw new IllegalArgumentException();
|
||||
lock.lock();
|
||||
try {
|
||||
for (Node<E> p = first; p != null; p = p.next)
|
||||
c.add(p.item);
|
||||
int n = count;
|
||||
count = 0;
|
||||
first = last = null;
|
||||
notFull.signalAll();
|
||||
return n;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
return drainTo(c, Integer.MAX_VALUE);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -671,19 +738,14 @@ public class LinkedBlockingDeque<E>
|
||||
throw new NullPointerException();
|
||||
if (c == this)
|
||||
throw new IllegalArgumentException();
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
int n = 0;
|
||||
while (n < maxElements && first != null) {
|
||||
c.add(first.item);
|
||||
first.prev = null;
|
||||
first = first.next;
|
||||
--count;
|
||||
++n;
|
||||
int n = Math.min(maxElements, count);
|
||||
for (int i = 0; i < n; i++) {
|
||||
c.add(first.item); // In this order, in case add() throws.
|
||||
unlinkFirst();
|
||||
}
|
||||
if (first == null)
|
||||
last = null;
|
||||
notFull.signalAll();
|
||||
return n;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
@ -712,16 +774,16 @@ public class LinkedBlockingDeque<E>
|
||||
/**
|
||||
* Removes the first occurrence of the specified element from this deque.
|
||||
* If the deque does not contain the element, it is unchanged.
|
||||
* More formally, removes the first element <tt>e</tt> such that
|
||||
* <tt>o.equals(e)</tt> (if such an element exists).
|
||||
* Returns <tt>true</tt> if this deque contained the specified element
|
||||
* More formally, removes the first element {@code e} such that
|
||||
* {@code o.equals(e)} (if such an element exists).
|
||||
* Returns {@code true} if this deque contained the specified element
|
||||
* (or equivalently, if this deque changed as a result of the call).
|
||||
*
|
||||
* <p>This method is equivalent to
|
||||
* {@link #removeFirstOccurrence(Object) removeFirstOccurrence}.
|
||||
*
|
||||
* @param o element to be removed from this deque, if present
|
||||
* @return <tt>true</tt> if this deque changed as a result of the call
|
||||
* @return {@code true} if this deque changed as a result of the call
|
||||
*/
|
||||
public boolean remove(Object o) {
|
||||
return removeFirstOccurrence(o);
|
||||
@ -733,6 +795,7 @@ public class LinkedBlockingDeque<E>
|
||||
* @return the number of elements in this deque
|
||||
*/
|
||||
public int size() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return count;
|
||||
@ -742,15 +805,16 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns <tt>true</tt> if this deque contains the specified element.
|
||||
* More formally, returns <tt>true</tt> if and only if this deque contains
|
||||
* at least one element <tt>e</tt> such that <tt>o.equals(e)</tt>.
|
||||
* Returns {@code true} if this deque contains the specified element.
|
||||
* More formally, returns {@code true} if and only if this deque contains
|
||||
* at least one element {@code e} such that {@code o.equals(e)}.
|
||||
*
|
||||
* @param o object to be checked for containment in this deque
|
||||
* @return <tt>true</tt> if this deque contains the specified element
|
||||
* @return {@code true} if this deque contains the specified element
|
||||
*/
|
||||
public boolean contains(Object o) {
|
||||
if (o == null) return false;
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
for (Node<E> p = first; p != null; p = p.next)
|
||||
@ -762,24 +826,46 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Variant of removeFirstOccurrence needed by iterator.remove.
|
||||
* Searches for the node, not its contents.
|
||||
/*
|
||||
* TODO: Add support for more efficient bulk operations.
|
||||
*
|
||||
* We don't want to acquire the lock for every iteration, but we
|
||||
* also want other threads a chance to interact with the
|
||||
* collection, especially when count is close to capacity.
|
||||
*/
|
||||
boolean removeNode(Node<E> e) {
|
||||
lock.lock();
|
||||
try {
|
||||
for (Node<E> p = first; p != null; p = p.next) {
|
||||
if (p == e) {
|
||||
unlink(p);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
}
|
||||
|
||||
// /**
|
||||
// * Adds all of the elements in the specified collection to this
|
||||
// * queue. Attempts to addAll of a queue to itself result in
|
||||
// * {@code IllegalArgumentException}. Further, the behavior of
|
||||
// * this operation is undefined if the specified collection is
|
||||
// * modified while the operation is in progress.
|
||||
// *
|
||||
// * @param c collection containing elements to be added to this queue
|
||||
// * @return {@code true} if this queue changed as a result of the call
|
||||
// * @throws ClassCastException {@inheritDoc}
|
||||
// * @throws NullPointerException {@inheritDoc}
|
||||
// * @throws IllegalArgumentException {@inheritDoc}
|
||||
// * @throws IllegalStateException {@inheritDoc}
|
||||
// * @see #add(Object)
|
||||
// */
|
||||
// public boolean addAll(Collection<? extends E> c) {
|
||||
// if (c == null)
|
||||
// throw new NullPointerException();
|
||||
// if (c == this)
|
||||
// throw new IllegalArgumentException();
|
||||
// final ReentrantLock lock = this.lock;
|
||||
// lock.lock();
|
||||
// try {
|
||||
// boolean modified = false;
|
||||
// for (E e : c)
|
||||
// if (linkLast(e))
|
||||
// modified = true;
|
||||
// return modified;
|
||||
// } finally {
|
||||
// lock.unlock();
|
||||
// }
|
||||
// }
|
||||
|
||||
/**
|
||||
* Returns an array containing all of the elements in this deque, in
|
||||
@ -794,7 +880,9 @@ public class LinkedBlockingDeque<E>
|
||||
*
|
||||
* @return an array containing all of the elements in this deque
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
public Object[] toArray() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
Object[] a = new Object[count];
|
||||
@ -817,22 +905,22 @@ public class LinkedBlockingDeque<E>
|
||||
* <p>If this deque fits in the specified array with room to spare
|
||||
* (i.e., the array has more elements than this deque), the element in
|
||||
* the array immediately following the end of the deque is set to
|
||||
* <tt>null</tt>.
|
||||
* {@code null}.
|
||||
*
|
||||
* <p>Like the {@link #toArray()} method, this method acts as bridge between
|
||||
* array-based and collection-based APIs. Further, this method allows
|
||||
* precise control over the runtime type of the output array, and may,
|
||||
* under certain circumstances, be used to save allocation costs.
|
||||
*
|
||||
* <p>Suppose <tt>x</tt> is a deque known to contain only strings.
|
||||
* <p>Suppose {@code x} is a deque known to contain only strings.
|
||||
* The following code can be used to dump the deque into a newly
|
||||
* allocated array of <tt>String</tt>:
|
||||
* allocated array of {@code String}:
|
||||
*
|
||||
* <pre>
|
||||
* String[] y = x.toArray(new String[0]);</pre>
|
||||
*
|
||||
* Note that <tt>toArray(new Object[0])</tt> is identical in function to
|
||||
* <tt>toArray()</tt>.
|
||||
* Note that {@code toArray(new Object[0])} is identical in function to
|
||||
* {@code toArray()}.
|
||||
*
|
||||
* @param a the array into which the elements of the deque are to
|
||||
* be stored, if it is big enough; otherwise, a new array of the
|
||||
@ -843,14 +931,14 @@ public class LinkedBlockingDeque<E>
|
||||
* this deque
|
||||
* @throws NullPointerException if the specified array is null
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
public <T> T[] toArray(T[] a) {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
if (a.length < count)
|
||||
a = (T[])java.lang.reflect.Array.newInstance(
|
||||
a.getClass().getComponentType(),
|
||||
count
|
||||
);
|
||||
a = (T[])java.lang.reflect.Array.newInstance
|
||||
(a.getClass().getComponentType(), count);
|
||||
|
||||
int k = 0;
|
||||
for (Node<E> p = first; p != null; p = p.next)
|
||||
@ -864,6 +952,7 @@ public class LinkedBlockingDeque<E>
|
||||
}
|
||||
|
||||
public String toString() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
return super.toString();
|
||||
@ -877,8 +966,16 @@ public class LinkedBlockingDeque<E>
|
||||
* The deque will be empty after this call returns.
|
||||
*/
|
||||
public void clear() {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
for (Node<E> f = first; f != null; ) {
|
||||
f.item = null;
|
||||
Node<E> n = f.next;
|
||||
f.prev = null;
|
||||
f.next = null;
|
||||
f = n;
|
||||
}
|
||||
first = last = null;
|
||||
count = 0;
|
||||
notFull.signalAll();
|
||||
@ -890,8 +987,9 @@ public class LinkedBlockingDeque<E>
|
||||
/**
|
||||
* Returns an iterator over the elements in this deque in proper sequence.
|
||||
* The elements will be returned in order from first (head) to last (tail).
|
||||
* The returned <tt>Iterator</tt> is a "weakly consistent" iterator that
|
||||
* will never throw {@link ConcurrentModificationException},
|
||||
* The returned {@code Iterator} is a "weakly consistent" iterator that
|
||||
* will never throw {@link java.util.ConcurrentModificationException
|
||||
* ConcurrentModificationException},
|
||||
* and guarantees to traverse elements as they existed upon
|
||||
* construction of the iterator, and may (but is not guaranteed to)
|
||||
* reflect any modifications subsequent to construction.
|
||||
@ -906,8 +1004,9 @@ public class LinkedBlockingDeque<E>
|
||||
* Returns an iterator over the elements in this deque in reverse
|
||||
* sequential order. The elements will be returned in order from
|
||||
* last (tail) to first (head).
|
||||
* The returned <tt>Iterator</tt> is a "weakly consistent" iterator that
|
||||
* will never throw {@link ConcurrentModificationException},
|
||||
* The returned {@code Iterator} is a "weakly consistent" iterator that
|
||||
* will never throw {@link java.util.ConcurrentModificationException
|
||||
* ConcurrentModificationException},
|
||||
* and guarantees to traverse elements as they existed upon
|
||||
* construction of the iterator, and may (but is not guaranteed to)
|
||||
* reflect any modifications subsequent to construction.
|
||||
@ -921,7 +1020,7 @@ public class LinkedBlockingDeque<E>
|
||||
*/
|
||||
private abstract class AbstractItr implements Iterator<E> {
|
||||
/**
|
||||
* The next node to return in next
|
||||
* The next node to return in next()
|
||||
*/
|
||||
Node<E> next;
|
||||
|
||||
@ -939,15 +1038,44 @@ public class LinkedBlockingDeque<E>
|
||||
*/
|
||||
private Node<E> lastRet;
|
||||
|
||||
abstract Node<E> firstNode();
|
||||
abstract Node<E> nextNode(Node<E> n);
|
||||
|
||||
AbstractItr() {
|
||||
advance(); // set to initial position
|
||||
// set to initial position
|
||||
final ReentrantLock lock = LinkedBlockingDeque.this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
next = firstNode();
|
||||
nextItem = (next == null) ? null : next.item;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Advances next, or if not yet initialized, sets to first node.
|
||||
* Implemented to move forward vs backward in the two subclasses.
|
||||
* Advances next.
|
||||
*/
|
||||
abstract void advance();
|
||||
void advance() {
|
||||
final ReentrantLock lock = LinkedBlockingDeque.this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
// assert next != null;
|
||||
Node<E> s = nextNode(next);
|
||||
if (s == next) {
|
||||
next = firstNode();
|
||||
} else {
|
||||
// Skip over removed nodes.
|
||||
// May be necessary if multiple interior Nodes are removed.
|
||||
while (s != null && s.item == null)
|
||||
s = nextNode(s);
|
||||
next = s;
|
||||
}
|
||||
nextItem = (next == null) ? null : next.item;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
}
|
||||
|
||||
public boolean hasNext() {
|
||||
return next != null;
|
||||
@ -967,52 +1095,39 @@ public class LinkedBlockingDeque<E>
|
||||
if (n == null)
|
||||
throw new IllegalStateException();
|
||||
lastRet = null;
|
||||
// Note: removeNode rescans looking for this node to make
|
||||
// sure it was not already removed. Otherwise, trying to
|
||||
// re-remove could corrupt list.
|
||||
removeNode(n);
|
||||
final ReentrantLock lock = LinkedBlockingDeque.this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
if (n.item != null)
|
||||
unlink(n);
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/** Forward iterator */
|
||||
private class Itr extends AbstractItr {
|
||||
void advance() {
|
||||
final ReentrantLock lock = LinkedBlockingDeque.this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
next = (next == null)? first : next.next;
|
||||
nextItem = (next == null)? null : next.item;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
}
|
||||
Node<E> firstNode() { return first; }
|
||||
Node<E> nextNode(Node<E> n) { return n.next; }
|
||||
}
|
||||
|
||||
/**
|
||||
* Descending iterator for LinkedBlockingDeque
|
||||
*/
|
||||
/** Descending iterator */
|
||||
private class DescendingItr extends AbstractItr {
|
||||
void advance() {
|
||||
final ReentrantLock lock = LinkedBlockingDeque.this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
next = (next == null)? last : next.prev;
|
||||
nextItem = (next == null)? null : next.item;
|
||||
} finally {
|
||||
lock.unlock();
|
||||
}
|
||||
}
|
||||
Node<E> firstNode() { return last; }
|
||||
Node<E> nextNode(Node<E> n) { return n.prev; }
|
||||
}
|
||||
|
||||
/**
|
||||
* Save the state of this deque to a stream (that is, serialize it).
|
||||
*
|
||||
* @serialData The capacity (int), followed by elements (each an
|
||||
* <tt>Object</tt>) in the proper order, followed by a null
|
||||
* {@code Object}) in the proper order, followed by a null
|
||||
* @param s the stream
|
||||
*/
|
||||
private void writeObject(java.io.ObjectOutputStream s)
|
||||
throws java.io.IOException {
|
||||
final ReentrantLock lock = this.lock;
|
||||
lock.lock();
|
||||
try {
|
||||
// Write out capacity and any hidden stuff
|
||||
@ -1040,6 +1155,7 @@ public class LinkedBlockingDeque<E>
|
||||
last = null;
|
||||
// Read in all elements and place in queue
|
||||
for (;;) {
|
||||
@SuppressWarnings("unchecked")
|
||||
E item = (E)s.readObject();
|
||||
if (item == null)
|
||||
break;
|
||||
|
||||
@ -34,9 +34,14 @@
|
||||
*/
|
||||
|
||||
package java.util.concurrent;
|
||||
import java.util.concurrent.atomic.*;
|
||||
import java.util.concurrent.locks.*;
|
||||
import java.util.*;
|
||||
|
||||
import java.util.concurrent.atomic.AtomicInteger;
|
||||
import java.util.concurrent.locks.Condition;
|
||||
import java.util.concurrent.locks.ReentrantLock;
|
||||
import java.util.AbstractQueue;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.NoSuchElementException;
|
||||
|
||||
/**
|
||||
* An optionally-bounded {@linkplain BlockingQueue blocking queue} based on
|
||||
@ -86,15 +91,43 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* items have been entered since the signal. And symmetrically for
|
||||
* takes signalling puts. Operations such as remove(Object) and
|
||||
* iterators acquire both locks.
|
||||
*
|
||||
* Visibility between writers and readers is provided as follows:
|
||||
*
|
||||
* Whenever an element is enqueued, the putLock is acquired and
|
||||
* count updated. A subsequent reader guarantees visibility to the
|
||||
* enqueued Node by either acquiring the putLock (via fullyLock)
|
||||
* or by acquiring the takeLock, and then reading n = count.get();
|
||||
* this gives visibility to the first n items.
|
||||
*
|
||||
* To implement weakly consistent iterators, it appears we need to
|
||||
* keep all Nodes GC-reachable from a predecessor dequeued Node.
|
||||
* That would cause two problems:
|
||||
* - allow a rogue Iterator to cause unbounded memory retention
|
||||
* - cause cross-generational linking of old Nodes to new Nodes if
|
||||
* a Node was tenured while live, which generational GCs have a
|
||||
* hard time dealing with, causing repeated major collections.
|
||||
* However, only non-deleted Nodes need to be reachable from
|
||||
* dequeued Nodes, and reachability does not necessarily have to
|
||||
* be of the kind understood by the GC. We use the trick of
|
||||
* linking a Node that has just been dequeued to itself. Such a
|
||||
* self-link implicitly means to advance to head.next.
|
||||
*/
|
||||
|
||||
/**
|
||||
* Linked list node class
|
||||
*/
|
||||
static class Node<E> {
|
||||
/** The item, volatile to ensure barrier separating write and read */
|
||||
volatile E item;
|
||||
E item;
|
||||
|
||||
/**
|
||||
* One of:
|
||||
* - the real successor Node
|
||||
* - this Node, meaning the successor is head.next
|
||||
* - null, meaning there is no successor (this is the last node)
|
||||
*/
|
||||
Node<E> next;
|
||||
|
||||
Node(E x) { item = x; }
|
||||
}
|
||||
|
||||
@ -104,10 +137,16 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
/** Current number of elements */
|
||||
private final AtomicInteger count = new AtomicInteger(0);
|
||||
|
||||
/** Head of linked list */
|
||||
/**
|
||||
* Head of linked list.
|
||||
* Invariant: head.item == null
|
||||
*/
|
||||
private transient Node<E> head;
|
||||
|
||||
/** Tail of linked list */
|
||||
/**
|
||||
* Tail of linked list.
|
||||
* Invariant: last.next == null
|
||||
*/
|
||||
private transient Node<E> last;
|
||||
|
||||
/** Lock held by take, poll, etc */
|
||||
@ -151,18 +190,26 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
|
||||
/**
|
||||
* Creates a node and links it at end of queue.
|
||||
*
|
||||
* @param x the item
|
||||
*/
|
||||
private void insert(E x) {
|
||||
private void enqueue(E x) {
|
||||
// assert putLock.isHeldByCurrentThread();
|
||||
// assert last.next == null;
|
||||
last = last.next = new Node<E>(x);
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes a node from head of queue,
|
||||
* Removes a node from head of queue.
|
||||
*
|
||||
* @return the node
|
||||
*/
|
||||
private E extract() {
|
||||
Node<E> first = head.next;
|
||||
private E dequeue() {
|
||||
// assert takeLock.isHeldByCurrentThread();
|
||||
// assert head.item == null;
|
||||
Node<E> h = head;
|
||||
Node<E> first = h.next;
|
||||
h.next = h; // help GC
|
||||
head = first;
|
||||
E x = first.item;
|
||||
first.item = null;
|
||||
@ -172,7 +219,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
/**
|
||||
* Lock to prevent both puts and takes.
|
||||
*/
|
||||
private void fullyLock() {
|
||||
void fullyLock() {
|
||||
putLock.lock();
|
||||
takeLock.lock();
|
||||
}
|
||||
@ -180,14 +227,21 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
/**
|
||||
* Unlock to allow both puts and takes.
|
||||
*/
|
||||
private void fullyUnlock() {
|
||||
void fullyUnlock() {
|
||||
takeLock.unlock();
|
||||
putLock.unlock();
|
||||
}
|
||||
|
||||
// /**
|
||||
// * Tells whether both locks are held by current thread.
|
||||
// */
|
||||
// boolean isFullyLocked() {
|
||||
// return (putLock.isHeldByCurrentThread() &&
|
||||
// takeLock.isHeldByCurrentThread());
|
||||
// }
|
||||
|
||||
/**
|
||||
* Creates a <tt>LinkedBlockingQueue</tt> with a capacity of
|
||||
* Creates a {@code LinkedBlockingQueue} with a capacity of
|
||||
* {@link Integer#MAX_VALUE}.
|
||||
*/
|
||||
public LinkedBlockingQueue() {
|
||||
@ -195,10 +249,10 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a <tt>LinkedBlockingQueue</tt> with the given (fixed) capacity.
|
||||
* Creates a {@code LinkedBlockingQueue} with the given (fixed) capacity.
|
||||
*
|
||||
* @param capacity the capacity of this queue
|
||||
* @throws IllegalArgumentException if <tt>capacity</tt> is not greater
|
||||
* @throws IllegalArgumentException if {@code capacity} is not greater
|
||||
* than zero
|
||||
*/
|
||||
public LinkedBlockingQueue(int capacity) {
|
||||
@ -208,7 +262,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a <tt>LinkedBlockingQueue</tt> with a capacity of
|
||||
* Creates a {@code LinkedBlockingQueue} with a capacity of
|
||||
* {@link Integer#MAX_VALUE}, initially containing the elements of the
|
||||
* given collection,
|
||||
* added in traversal order of the collection's iterator.
|
||||
@ -219,8 +273,22 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
*/
|
||||
public LinkedBlockingQueue(Collection<? extends E> c) {
|
||||
this(Integer.MAX_VALUE);
|
||||
for (E e : c)
|
||||
add(e);
|
||||
final ReentrantLock putLock = this.putLock;
|
||||
putLock.lock(); // Never contended, but necessary for visibility
|
||||
try {
|
||||
int n = 0;
|
||||
for (E e : c) {
|
||||
if (e == null)
|
||||
throw new NullPointerException();
|
||||
if (n == capacity)
|
||||
throw new IllegalStateException("Queue full");
|
||||
enqueue(e);
|
||||
++n;
|
||||
}
|
||||
count.set(n);
|
||||
} finally {
|
||||
putLock.unlock();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -241,10 +309,10 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* Returns the number of additional elements that this queue can ideally
|
||||
* (in the absence of memory or resource constraints) accept without
|
||||
* blocking. This is always equal to the initial capacity of this queue
|
||||
* less the current <tt>size</tt> of this queue.
|
||||
* less the current {@code size} of this queue.
|
||||
*
|
||||
* <p>Note that you <em>cannot</em> always tell if an attempt to insert
|
||||
* an element will succeed by inspecting <tt>remainingCapacity</tt>
|
||||
* an element will succeed by inspecting {@code remainingCapacity}
|
||||
* because it may be the case that another thread is about to
|
||||
* insert or remove an element.
|
||||
*/
|
||||
@ -261,8 +329,8 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
*/
|
||||
public void put(E e) throws InterruptedException {
|
||||
if (e == null) throw new NullPointerException();
|
||||
// Note: convention in all put/take/etc is to preset
|
||||
// local var holding count negative to indicate failure unless set.
|
||||
// Note: convention in all put/take/etc is to preset local var
|
||||
// holding count negative to indicate failure unless set.
|
||||
int c = -1;
|
||||
final ReentrantLock putLock = this.putLock;
|
||||
final AtomicInteger count = this.count;
|
||||
@ -273,18 +341,13 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* not protected by lock. This works because count can
|
||||
* only decrease at this point (all other puts are shut
|
||||
* out by lock), and we (or some other waiting put) are
|
||||
* signalled if it ever changes from
|
||||
* capacity. Similarly for all other uses of count in
|
||||
* other wait guards.
|
||||
* signalled if it ever changes from capacity. Similarly
|
||||
* for all other uses of count in other wait guards.
|
||||
*/
|
||||
try {
|
||||
while (count.get() == capacity)
|
||||
notFull.await();
|
||||
} catch (InterruptedException ie) {
|
||||
notFull.signal(); // propagate to a non-interrupted thread
|
||||
throw ie;
|
||||
while (count.get() == capacity) {
|
||||
notFull.await();
|
||||
}
|
||||
insert(e);
|
||||
enqueue(e);
|
||||
c = count.getAndIncrement();
|
||||
if (c + 1 < capacity)
|
||||
notFull.signal();
|
||||
@ -299,7 +362,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* Inserts the specified element at the tail of this queue, waiting if
|
||||
* necessary up to the specified wait time for space to become available.
|
||||
*
|
||||
* @return <tt>true</tt> if successful, or <tt>false</tt> if
|
||||
* @return {@code true} if successful, or {@code false} if
|
||||
* the specified waiting time elapses before space is available.
|
||||
* @throws InterruptedException {@inheritDoc}
|
||||
* @throws NullPointerException {@inheritDoc}
|
||||
@ -314,23 +377,15 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
final AtomicInteger count = this.count;
|
||||
putLock.lockInterruptibly();
|
||||
try {
|
||||
for (;;) {
|
||||
if (count.get() < capacity) {
|
||||
insert(e);
|
||||
c = count.getAndIncrement();
|
||||
if (c + 1 < capacity)
|
||||
notFull.signal();
|
||||
break;
|
||||
}
|
||||
while (count.get() == capacity) {
|
||||
if (nanos <= 0)
|
||||
return false;
|
||||
try {
|
||||
nanos = notFull.awaitNanos(nanos);
|
||||
} catch (InterruptedException ie) {
|
||||
notFull.signal(); // propagate to a non-interrupted thread
|
||||
throw ie;
|
||||
}
|
||||
nanos = notFull.awaitNanos(nanos);
|
||||
}
|
||||
enqueue(e);
|
||||
c = count.getAndIncrement();
|
||||
if (c + 1 < capacity)
|
||||
notFull.signal();
|
||||
} finally {
|
||||
putLock.unlock();
|
||||
}
|
||||
@ -342,7 +397,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
/**
|
||||
* Inserts the specified element at the tail of this queue if it is
|
||||
* possible to do so immediately without exceeding the queue's capacity,
|
||||
* returning <tt>true</tt> upon success and <tt>false</tt> if this queue
|
||||
* returning {@code true} upon success and {@code false} if this queue
|
||||
* is full.
|
||||
* When using a capacity-restricted queue, this method is generally
|
||||
* preferable to method {@link BlockingQueue#add add}, which can fail to
|
||||
@ -360,7 +415,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
putLock.lock();
|
||||
try {
|
||||
if (count.get() < capacity) {
|
||||
insert(e);
|
||||
enqueue(e);
|
||||
c = count.getAndIncrement();
|
||||
if (c + 1 < capacity)
|
||||
notFull.signal();
|
||||
@ -381,15 +436,10 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
final ReentrantLock takeLock = this.takeLock;
|
||||
takeLock.lockInterruptibly();
|
||||
try {
|
||||
try {
|
||||
while (count.get() == 0)
|
||||
notEmpty.await();
|
||||
} catch (InterruptedException ie) {
|
||||
notEmpty.signal(); // propagate to a non-interrupted thread
|
||||
throw ie;
|
||||
while (count.get() == 0) {
|
||||
notEmpty.await();
|
||||
}
|
||||
|
||||
x = extract();
|
||||
x = dequeue();
|
||||
c = count.getAndDecrement();
|
||||
if (c > 1)
|
||||
notEmpty.signal();
|
||||
@ -409,23 +459,15 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
final ReentrantLock takeLock = this.takeLock;
|
||||
takeLock.lockInterruptibly();
|
||||
try {
|
||||
for (;;) {
|
||||
if (count.get() > 0) {
|
||||
x = extract();
|
||||
c = count.getAndDecrement();
|
||||
if (c > 1)
|
||||
notEmpty.signal();
|
||||
break;
|
||||
}
|
||||
while (count.get() == 0) {
|
||||
if (nanos <= 0)
|
||||
return null;
|
||||
try {
|
||||
nanos = notEmpty.awaitNanos(nanos);
|
||||
} catch (InterruptedException ie) {
|
||||
notEmpty.signal(); // propagate to a non-interrupted thread
|
||||
throw ie;
|
||||
}
|
||||
nanos = notEmpty.awaitNanos(nanos);
|
||||
}
|
||||
x = dequeue();
|
||||
c = count.getAndDecrement();
|
||||
if (c > 1)
|
||||
notEmpty.signal();
|
||||
} finally {
|
||||
takeLock.unlock();
|
||||
}
|
||||
@ -444,7 +486,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
takeLock.lock();
|
||||
try {
|
||||
if (count.get() > 0) {
|
||||
x = extract();
|
||||
x = dequeue();
|
||||
c = count.getAndDecrement();
|
||||
if (c > 1)
|
||||
notEmpty.signal();
|
||||
@ -457,7 +499,6 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
return x;
|
||||
}
|
||||
|
||||
|
||||
public E peek() {
|
||||
if (count.get() == 0)
|
||||
return null;
|
||||
@ -474,44 +515,48 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Unlinks interior Node p with predecessor trail.
|
||||
*/
|
||||
void unlink(Node<E> p, Node<E> trail) {
|
||||
// assert isFullyLocked();
|
||||
// p.next is not changed, to allow iterators that are
|
||||
// traversing p to maintain their weak-consistency guarantee.
|
||||
p.item = null;
|
||||
trail.next = p.next;
|
||||
if (last == p)
|
||||
last = trail;
|
||||
if (count.getAndDecrement() == capacity)
|
||||
notFull.signal();
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes a single instance of the specified element from this queue,
|
||||
* if it is present. More formally, removes an element <tt>e</tt> such
|
||||
* that <tt>o.equals(e)</tt>, if this queue contains one or more such
|
||||
* if it is present. More formally, removes an element {@code e} such
|
||||
* that {@code o.equals(e)}, if this queue contains one or more such
|
||||
* elements.
|
||||
* Returns <tt>true</tt> if this queue contained the specified element
|
||||
* Returns {@code true} if this queue contained the specified element
|
||||
* (or equivalently, if this queue changed as a result of the call).
|
||||
*
|
||||
* @param o element to be removed from this queue, if present
|
||||
* @return <tt>true</tt> if this queue changed as a result of the call
|
||||
* @return {@code true} if this queue changed as a result of the call
|
||||
*/
|
||||
public boolean remove(Object o) {
|
||||
if (o == null) return false;
|
||||
boolean removed = false;
|
||||
fullyLock();
|
||||
try {
|
||||
Node<E> trail = head;
|
||||
Node<E> p = head.next;
|
||||
while (p != null) {
|
||||
for (Node<E> trail = head, p = trail.next;
|
||||
p != null;
|
||||
trail = p, p = p.next) {
|
||||
if (o.equals(p.item)) {
|
||||
removed = true;
|
||||
break;
|
||||
unlink(p, trail);
|
||||
return true;
|
||||
}
|
||||
trail = p;
|
||||
p = p.next;
|
||||
}
|
||||
if (removed) {
|
||||
p.item = null;
|
||||
trail.next = p.next;
|
||||
if (last == p)
|
||||
last = trail;
|
||||
if (count.getAndDecrement() == capacity)
|
||||
notFull.signalAll();
|
||||
}
|
||||
return false;
|
||||
} finally {
|
||||
fullyUnlock();
|
||||
}
|
||||
return removed;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -551,22 +596,22 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* <p>If this queue fits in the specified array with room to spare
|
||||
* (i.e., the array has more elements than this queue), the element in
|
||||
* the array immediately following the end of the queue is set to
|
||||
* <tt>null</tt>.
|
||||
* {@code null}.
|
||||
*
|
||||
* <p>Like the {@link #toArray()} method, this method acts as bridge between
|
||||
* array-based and collection-based APIs. Further, this method allows
|
||||
* precise control over the runtime type of the output array, and may,
|
||||
* under certain circumstances, be used to save allocation costs.
|
||||
*
|
||||
* <p>Suppose <tt>x</tt> is a queue known to contain only strings.
|
||||
* <p>Suppose {@code x} is a queue known to contain only strings.
|
||||
* The following code can be used to dump the queue into a newly
|
||||
* allocated array of <tt>String</tt>:
|
||||
* allocated array of {@code String}:
|
||||
*
|
||||
* <pre>
|
||||
* String[] y = x.toArray(new String[0]);</pre>
|
||||
*
|
||||
* Note that <tt>toArray(new Object[0])</tt> is identical in function to
|
||||
* <tt>toArray()</tt>.
|
||||
* Note that {@code toArray(new Object[0])} is identical in function to
|
||||
* {@code toArray()}.
|
||||
*
|
||||
* @param a the array into which the elements of the queue are to
|
||||
* be stored, if it is big enough; otherwise, a new array of the
|
||||
@ -577,6 +622,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* this queue
|
||||
* @throws NullPointerException if the specified array is null
|
||||
*/
|
||||
@SuppressWarnings("unchecked")
|
||||
public <T> T[] toArray(T[] a) {
|
||||
fullyLock();
|
||||
try {
|
||||
@ -586,7 +632,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
(a.getClass().getComponentType(), size);
|
||||
|
||||
int k = 0;
|
||||
for (Node p = head.next; p != null; p = p.next)
|
||||
for (Node<E> p = head.next; p != null; p = p.next)
|
||||
a[k++] = (T)p.item;
|
||||
if (a.length > k)
|
||||
a[k] = null;
|
||||
@ -612,11 +658,14 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
public void clear() {
|
||||
fullyLock();
|
||||
try {
|
||||
head.next = null;
|
||||
assert head.item == null;
|
||||
last = head;
|
||||
for (Node<E> p, h = head; (p = h.next) != null; h = p) {
|
||||
h.next = h;
|
||||
p.item = null;
|
||||
}
|
||||
head = last;
|
||||
// assert head.item == null && head.next == null;
|
||||
if (count.getAndSet(0) == capacity)
|
||||
notFull.signalAll();
|
||||
notFull.signal();
|
||||
} finally {
|
||||
fullyUnlock();
|
||||
}
|
||||
@ -629,30 +678,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* @throws IllegalArgumentException {@inheritDoc}
|
||||
*/
|
||||
public int drainTo(Collection<? super E> c) {
|
||||
if (c == null)
|
||||
throw new NullPointerException();
|
||||
if (c == this)
|
||||
throw new IllegalArgumentException();
|
||||
Node<E> first;
|
||||
fullyLock();
|
||||
try {
|
||||
first = head.next;
|
||||
head.next = null;
|
||||
assert head.item == null;
|
||||
last = head;
|
||||
if (count.getAndSet(0) == capacity)
|
||||
notFull.signalAll();
|
||||
} finally {
|
||||
fullyUnlock();
|
||||
}
|
||||
// Transfer the elements outside of locks
|
||||
int n = 0;
|
||||
for (Node<E> p = first; p != null; p = p.next) {
|
||||
c.add(p.item);
|
||||
p.item = null;
|
||||
++n;
|
||||
}
|
||||
return n;
|
||||
return drainTo(c, Integer.MAX_VALUE);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -666,34 +692,44 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
throw new NullPointerException();
|
||||
if (c == this)
|
||||
throw new IllegalArgumentException();
|
||||
fullyLock();
|
||||
boolean signalNotFull = false;
|
||||
final ReentrantLock takeLock = this.takeLock;
|
||||
takeLock.lock();
|
||||
try {
|
||||
int n = 0;
|
||||
Node<E> p = head.next;
|
||||
while (p != null && n < maxElements) {
|
||||
c.add(p.item);
|
||||
p.item = null;
|
||||
p = p.next;
|
||||
++n;
|
||||
int n = Math.min(maxElements, count.get());
|
||||
// count.get provides visibility to first n Nodes
|
||||
Node<E> h = head;
|
||||
int i = 0;
|
||||
try {
|
||||
while (i < n) {
|
||||
Node<E> p = h.next;
|
||||
c.add(p.item);
|
||||
p.item = null;
|
||||
h.next = h;
|
||||
h = p;
|
||||
++i;
|
||||
}
|
||||
return n;
|
||||
} finally {
|
||||
// Restore invariants even if c.add() threw
|
||||
if (i > 0) {
|
||||
// assert h.item == null;
|
||||
head = h;
|
||||
signalNotFull = (count.getAndAdd(-i) == capacity);
|
||||
}
|
||||
}
|
||||
if (n != 0) {
|
||||
head.next = p;
|
||||
assert head.item == null;
|
||||
if (p == null)
|
||||
last = head;
|
||||
if (count.getAndAdd(-n) == capacity)
|
||||
notFull.signalAll();
|
||||
}
|
||||
return n;
|
||||
} finally {
|
||||
fullyUnlock();
|
||||
takeLock.unlock();
|
||||
if (signalNotFull)
|
||||
signalNotFull();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an iterator over the elements in this queue in proper sequence.
|
||||
* The returned <tt>Iterator</tt> is a "weakly consistent" iterator that
|
||||
* will never throw {@link ConcurrentModificationException},
|
||||
* The returned {@code Iterator} is a "weakly consistent" iterator that
|
||||
* will never throw {@link java.util.ConcurrentModificationException
|
||||
* ConcurrentModificationException},
|
||||
* and guarantees to traverse elements as they existed upon
|
||||
* construction of the iterator, and may (but is not guaranteed to)
|
||||
* reflect any modifications subsequent to construction.
|
||||
@ -706,7 +742,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
|
||||
private class Itr implements Iterator<E> {
|
||||
/*
|
||||
* Basic weak-consistent iterator. At all times hold the next
|
||||
* Basic weakly-consistent iterator. At all times hold the next
|
||||
* item to hand out so that if hasNext() reports true, we will
|
||||
* still have it to return even if lost race with a take etc.
|
||||
*/
|
||||
@ -715,17 +751,13 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
private E currentElement;
|
||||
|
||||
Itr() {
|
||||
final ReentrantLock putLock = LinkedBlockingQueue.this.putLock;
|
||||
final ReentrantLock takeLock = LinkedBlockingQueue.this.takeLock;
|
||||
putLock.lock();
|
||||
takeLock.lock();
|
||||
fullyLock();
|
||||
try {
|
||||
current = head.next;
|
||||
if (current != null)
|
||||
currentElement = current.item;
|
||||
} finally {
|
||||
takeLock.unlock();
|
||||
putLock.unlock();
|
||||
fullyUnlock();
|
||||
}
|
||||
}
|
||||
|
||||
@ -733,54 +765,54 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
return current != null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Unlike other traversal methods, iterators need to handle:
|
||||
* - dequeued nodes (p.next == p)
|
||||
* - interior removed nodes (p.item == null)
|
||||
*/
|
||||
private Node<E> nextNode(Node<E> p) {
|
||||
Node<E> s = p.next;
|
||||
if (p == s)
|
||||
return head.next;
|
||||
// Skip over removed nodes.
|
||||
// May be necessary if multiple interior Nodes are removed.
|
||||
while (s != null && s.item == null)
|
||||
s = s.next;
|
||||
return s;
|
||||
}
|
||||
|
||||
public E next() {
|
||||
final ReentrantLock putLock = LinkedBlockingQueue.this.putLock;
|
||||
final ReentrantLock takeLock = LinkedBlockingQueue.this.takeLock;
|
||||
putLock.lock();
|
||||
takeLock.lock();
|
||||
fullyLock();
|
||||
try {
|
||||
if (current == null)
|
||||
throw new NoSuchElementException();
|
||||
E x = currentElement;
|
||||
lastRet = current;
|
||||
current = current.next;
|
||||
if (current != null)
|
||||
currentElement = current.item;
|
||||
current = nextNode(current);
|
||||
currentElement = (current == null) ? null : current.item;
|
||||
return x;
|
||||
} finally {
|
||||
takeLock.unlock();
|
||||
putLock.unlock();
|
||||
fullyUnlock();
|
||||
}
|
||||
}
|
||||
|
||||
public void remove() {
|
||||
if (lastRet == null)
|
||||
throw new IllegalStateException();
|
||||
final ReentrantLock putLock = LinkedBlockingQueue.this.putLock;
|
||||
final ReentrantLock takeLock = LinkedBlockingQueue.this.takeLock;
|
||||
putLock.lock();
|
||||
takeLock.lock();
|
||||
fullyLock();
|
||||
try {
|
||||
Node<E> node = lastRet;
|
||||
lastRet = null;
|
||||
Node<E> trail = head;
|
||||
Node<E> p = head.next;
|
||||
while (p != null && p != node) {
|
||||
trail = p;
|
||||
p = p.next;
|
||||
}
|
||||
if (p == node) {
|
||||
p.item = null;
|
||||
trail.next = p.next;
|
||||
if (last == p)
|
||||
last = trail;
|
||||
int c = count.getAndDecrement();
|
||||
if (c == capacity)
|
||||
notFull.signalAll();
|
||||
for (Node<E> trail = head, p = trail.next;
|
||||
p != null;
|
||||
trail = p, p = p.next) {
|
||||
if (p == node) {
|
||||
unlink(p, trail);
|
||||
break;
|
||||
}
|
||||
}
|
||||
} finally {
|
||||
takeLock.unlock();
|
||||
putLock.unlock();
|
||||
fullyUnlock();
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -789,7 +821,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
* Save the state to a stream (that is, serialize it).
|
||||
*
|
||||
* @serialData The capacity is emitted (int), followed by all of
|
||||
* its elements (each an <tt>Object</tt>) in the proper order,
|
||||
* its elements (each an {@code Object}) in the proper order,
|
||||
* followed by a null
|
||||
* @param s the stream
|
||||
*/
|
||||
@ -815,6 +847,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
/**
|
||||
* Reconstitute this queue instance from a stream (that is,
|
||||
* deserialize it).
|
||||
*
|
||||
* @param s the stream
|
||||
*/
|
||||
private void readObject(java.io.ObjectInputStream s)
|
||||
@ -827,6 +860,7 @@ public class LinkedBlockingQueue<E> extends AbstractQueue<E>
|
||||
|
||||
// Read in all elements and place in queue
|
||||
for (;;) {
|
||||
@SuppressWarnings("unchecked")
|
||||
E item = (E)s.readObject();
|
||||
if (item == null)
|
||||
break;
|
||||
|
||||
@ -16,7 +16,7 @@
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin Sf, tifth Floor, Boston, MA 02110-1301 USA.
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
|
||||
@ -50,27 +50,72 @@
|
||||
#include <limits.h>
|
||||
|
||||
/*
|
||||
* (Hopefully temporarily) disable the clone-exec feature pending
|
||||
* further investigation and bug-fixing.
|
||||
* 32-bit (but not 64-bit) Linux fails on the program
|
||||
* Runtime.getRuntime().exec("/bin/true").waitFor();
|
||||
* with:
|
||||
* # Internal Error (os_linux_x86.cpp:683), pid=19940, tid=2934639536
|
||||
* # Error: pthread_getattr_np failed with errno = 3 (ESRCH)
|
||||
* Linux kernel/pthread gurus are invited to figure this out.
|
||||
* There are 3 possible strategies we might use to "fork":
|
||||
*
|
||||
* - fork(2). Very portable and reliable but subject to
|
||||
* failure due to overcommit (see the documentation on
|
||||
* /proc/sys/vm/overcommit_memory in Linux proc(5)).
|
||||
* This is the ancient problem of spurious failure whenever a large
|
||||
* process starts a small subprocess.
|
||||
*
|
||||
* - vfork(). Using this is scary because all relevant man pages
|
||||
* contain dire warnings, e.g. Linux vfork(2). But at least it's
|
||||
* documented in the glibc docs and is standardized by XPG4.
|
||||
* http://www.opengroup.org/onlinepubs/000095399/functions/vfork.html
|
||||
* On Linux, one might think that vfork() would be implemented using
|
||||
* the clone system call with flag CLONE_VFORK, but in fact vfork is
|
||||
* a separate system call (which is a good sign, suggesting that
|
||||
* vfork will continue to be supported at least on Linux).
|
||||
* Another good sign is that glibc implements posix_spawn using
|
||||
* vfork whenever possible. Note that we cannot use posix_spawn
|
||||
* ourselves because there's no reliable way to close all inherited
|
||||
* file descriptors.
|
||||
*
|
||||
* - clone() with flags CLONE_VM but not CLONE_THREAD. clone() is
|
||||
* Linux-specific, but this ought to work - at least the glibc
|
||||
* sources contain code to handle different combinations of CLONE_VM
|
||||
* and CLONE_THREAD. However, when this was implemented, it
|
||||
* appeared to fail on 32-bit i386 (but not 64-bit x86_64) Linux with
|
||||
* the simple program
|
||||
* Runtime.getRuntime().exec("/bin/true").waitFor();
|
||||
* with:
|
||||
* # Internal Error (os_linux_x86.cpp:683), pid=19940, tid=2934639536
|
||||
* # Error: pthread_getattr_np failed with errno = 3 (ESRCH)
|
||||
* We believe this is a glibc bug, reported here:
|
||||
* http://sources.redhat.com/bugzilla/show_bug.cgi?id=10311
|
||||
* but the glibc maintainers closed it as WONTFIX.
|
||||
*
|
||||
* Based on the above analysis, we are currently using vfork() on
|
||||
* Linux and fork() on other Unix systems, but the code to use clone()
|
||||
* remains.
|
||||
*/
|
||||
#define USE_CLONE 0
|
||||
|
||||
#ifndef USE_CLONE
|
||||
#ifdef __linux__
|
||||
#define USE_CLONE 1
|
||||
#else
|
||||
#define USE_CLONE 0
|
||||
#endif
|
||||
#define START_CHILD_USE_CLONE 0 /* clone() currently disabled; see above. */
|
||||
|
||||
#ifndef START_CHILD_USE_CLONE
|
||||
#ifdef __linux__
|
||||
#define START_CHILD_USE_CLONE 1
|
||||
#else
|
||||
#define START_CHILD_USE_CLONE 0
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if USE_CLONE
|
||||
/* By default, use vfork() on Linux. */
|
||||
#ifndef START_CHILD_USE_VFORK
|
||||
#ifdef __linux__
|
||||
#define START_CHILD_USE_VFORK 1
|
||||
#else
|
||||
#define START_CHILD_USE_VFORK 0
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if START_CHILD_USE_CLONE
|
||||
#include <sched.h>
|
||||
#define START_CHILD_SYSTEM_CALL "clone"
|
||||
#elif START_CHILD_USE_VFORK
|
||||
#define START_CHILD_SYSTEM_CALL "vfork"
|
||||
#else
|
||||
#define START_CHILD_SYSTEM_CALL "fork"
|
||||
#endif
|
||||
|
||||
#ifndef STDIN_FILENO
|
||||
@ -95,6 +140,27 @@
|
||||
|
||||
#define FAIL_FILENO (STDERR_FILENO + 1)
|
||||
|
||||
/* TODO: Refactor. */
|
||||
#define RESTARTABLE(_cmd, _result) do { \
|
||||
do { \
|
||||
_result = _cmd; \
|
||||
} while((_result == -1) && (errno == EINTR)); \
|
||||
} while(0)
|
||||
|
||||
/* This is one of the rare times it's more portable to declare an
|
||||
* external symbol explicitly, rather than via a system header.
|
||||
* The declaration is standardized as part of UNIX98, but there is
|
||||
* no standard (not even de-facto) header file where the
|
||||
* declaration is to be found. See:
|
||||
* http://www.opengroup.org/onlinepubs/009695399/functions/environ.html
|
||||
* http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_02.html
|
||||
*
|
||||
* "All identifiers in this volume of IEEE Std 1003.1-2001, except
|
||||
* environ, are defined in at least one of the headers" (!)
|
||||
*/
|
||||
extern char **environ;
|
||||
|
||||
|
||||
static void
|
||||
setSIGCHLDHandler(JNIEnv *env)
|
||||
{
|
||||
@ -283,6 +349,36 @@ Java_java_lang_UNIXProcess_waitForProcessExit(JNIEnv* env,
|
||||
}
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
restartableWrite(int fd, const void *buf, size_t count)
|
||||
{
|
||||
ssize_t result;
|
||||
RESTARTABLE(write(fd, buf, count), result);
|
||||
return result;
|
||||
}
|
||||
|
||||
static int
|
||||
restartableDup2(int fd_from, int fd_to)
|
||||
{
|
||||
int err;
|
||||
RESTARTABLE(dup2(fd_from, fd_to), err);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int
|
||||
restartableClose(int fd)
|
||||
{
|
||||
int err;
|
||||
RESTARTABLE(close(fd), err);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int
|
||||
closeSafely(int fd)
|
||||
{
|
||||
return (fd == -1) ? 0 : restartableClose(fd);
|
||||
}
|
||||
|
||||
static int
|
||||
isAsciiDigit(char c)
|
||||
{
|
||||
@ -303,8 +399,8 @@ closeDescriptors(void)
|
||||
* the lowest numbered file descriptor, just like open(). So we
|
||||
* close a couple explicitly. */
|
||||
|
||||
close(from_fd); /* for possible use by opendir() */
|
||||
close(from_fd + 1); /* another one for good luck */
|
||||
restartableClose(from_fd); /* for possible use by opendir() */
|
||||
restartableClose(from_fd + 1); /* another one for good luck */
|
||||
|
||||
if ((dp = opendir("/proc/self/fd")) == NULL)
|
||||
return 0;
|
||||
@ -316,7 +412,7 @@ closeDescriptors(void)
|
||||
int fd;
|
||||
if (isAsciiDigit(dirp->d_name[0]) &&
|
||||
(fd = strtol(dirp->d_name, NULL, 10)) >= from_fd + 2)
|
||||
close(fd);
|
||||
restartableClose(fd);
|
||||
}
|
||||
|
||||
closedir(dp);
|
||||
@ -324,13 +420,15 @@ closeDescriptors(void)
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void
|
||||
static int
|
||||
moveDescriptor(int fd_from, int fd_to)
|
||||
{
|
||||
if (fd_from != fd_to) {
|
||||
dup2(fd_from, fd_to);
|
||||
close(fd_from);
|
||||
if ((restartableDup2(fd_from, fd_to) == -1) ||
|
||||
(restartableClose(fd_from) == -1))
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const char *
|
||||
@ -434,41 +532,30 @@ execve_with_shell_fallback(const char *file,
|
||||
const char *argv[],
|
||||
const char *const envp[])
|
||||
{
|
||||
#if USE_CLONE
|
||||
#if START_CHILD_USE_CLONE || START_CHILD_USE_VFORK
|
||||
/* shared address space; be very careful. */
|
||||
execve(file, (char **) argv, (char **) envp);
|
||||
if (errno == ENOEXEC)
|
||||
execve_as_traditional_shell_script(file, argv, envp);
|
||||
#else
|
||||
/* Our address space is unshared, so can mutate environ. */
|
||||
extern char **environ;
|
||||
/* unshared address space; we can mutate environ. */
|
||||
environ = (char **) envp;
|
||||
execvp(file, (char **) argv);
|
||||
#endif
|
||||
}
|
||||
|
||||
/**
|
||||
* execvpe should have been included in the Unix standards.
|
||||
* execvpe is identical to execvp, except that the child environment is
|
||||
* 'execvpe' should have been included in the Unix standards,
|
||||
* and is a GNU extension in glibc 2.10.
|
||||
*
|
||||
* JDK_execvpe is identical to execvp, except that the child environment is
|
||||
* specified via the 3rd argument instead of being inherited from environ.
|
||||
*/
|
||||
static void
|
||||
execvpe(const char *file,
|
||||
const char *argv[],
|
||||
const char *const envp[])
|
||||
JDK_execvpe(const char *file,
|
||||
const char *argv[],
|
||||
const char *const envp[])
|
||||
{
|
||||
/* This is one of the rare times it's more portable to declare an
|
||||
* external symbol explicitly, rather than via a system header.
|
||||
* The declaration is standardized as part of UNIX98, but there is
|
||||
* no standard (not even de-facto) header file where the
|
||||
* declaration is to be found. See:
|
||||
* http://www.opengroup.org/onlinepubs/009695399/functions/environ.html
|
||||
* http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_02.html
|
||||
*
|
||||
* "All identifiers in this volume of IEEE Std 1003.1-2001, except
|
||||
* environ, are defined in at least one of the headers" (!)
|
||||
*/
|
||||
extern char **environ;
|
||||
|
||||
if (envp == NULL || (char **) envp == environ) {
|
||||
execvp(file, (char **) argv);
|
||||
return;
|
||||
@ -538,13 +625,6 @@ execvpe(const char *file,
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
closeSafely(int fd)
|
||||
{
|
||||
if (fd != -1)
|
||||
close(fd);
|
||||
}
|
||||
|
||||
/*
|
||||
* Reads nbyte bytes from file descriptor fd into buf,
|
||||
* The read operation is retried in case of EINTR or partial reads.
|
||||
@ -587,6 +667,9 @@ typedef struct _ChildStuff
|
||||
const char **envv;
|
||||
const char *pdir;
|
||||
jboolean redirectErrorStream;
|
||||
#if START_CHILD_USE_CLONE
|
||||
void *clone_stack;
|
||||
#endif
|
||||
} ChildStuff;
|
||||
|
||||
static void
|
||||
@ -610,31 +693,40 @@ childProcess(void *arg)
|
||||
/* Close the parent sides of the pipes.
|
||||
Closing pipe fds here is redundant, since closeDescriptors()
|
||||
would do it anyways, but a little paranoia is a good thing. */
|
||||
closeSafely(p->in[1]);
|
||||
closeSafely(p->out[0]);
|
||||
closeSafely(p->err[0]);
|
||||
closeSafely(p->fail[0]);
|
||||
if ((closeSafely(p->in[1]) == -1) ||
|
||||
(closeSafely(p->out[0]) == -1) ||
|
||||
(closeSafely(p->err[0]) == -1) ||
|
||||
(closeSafely(p->fail[0]) == -1))
|
||||
goto WhyCantJohnnyExec;
|
||||
|
||||
/* Give the child sides of the pipes the right fileno's. */
|
||||
/* Note: it is possible for in[0] == 0 */
|
||||
moveDescriptor(p->in[0] != -1 ? p->in[0] : p->fds[0], STDIN_FILENO);
|
||||
moveDescriptor(p->out[1]!= -1 ? p->out[1] : p->fds[1], STDOUT_FILENO);
|
||||
if ((moveDescriptor(p->in[0] != -1 ? p->in[0] : p->fds[0],
|
||||
STDIN_FILENO) == -1) ||
|
||||
(moveDescriptor(p->out[1]!= -1 ? p->out[1] : p->fds[1],
|
||||
STDOUT_FILENO) == -1))
|
||||
goto WhyCantJohnnyExec;
|
||||
|
||||
if (p->redirectErrorStream) {
|
||||
closeSafely(p->err[1]);
|
||||
dup2(STDOUT_FILENO, STDERR_FILENO);
|
||||
if ((closeSafely(p->err[1]) == -1) ||
|
||||
(restartableDup2(STDOUT_FILENO, STDERR_FILENO) == -1))
|
||||
goto WhyCantJohnnyExec;
|
||||
} else {
|
||||
moveDescriptor(p->err[1] != -1 ? p->err[1] : p->fds[2], STDERR_FILENO);
|
||||
if (moveDescriptor(p->err[1] != -1 ? p->err[1] : p->fds[2],
|
||||
STDERR_FILENO) == -1)
|
||||
goto WhyCantJohnnyExec;
|
||||
}
|
||||
|
||||
moveDescriptor(p->fail[1], FAIL_FILENO);
|
||||
if (moveDescriptor(p->fail[1], FAIL_FILENO) == -1)
|
||||
goto WhyCantJohnnyExec;
|
||||
|
||||
/* close everything */
|
||||
if (closeDescriptors() == 0) { /* failed, close the old way */
|
||||
int max_fd = (int)sysconf(_SC_OPEN_MAX);
|
||||
int i;
|
||||
for (i = FAIL_FILENO + 1; i < max_fd; i++)
|
||||
close(i);
|
||||
int fd;
|
||||
for (fd = FAIL_FILENO + 1; fd < max_fd; fd++)
|
||||
if (restartableClose(fd) == -1 && errno != EBADF)
|
||||
goto WhyCantJohnnyExec;
|
||||
}
|
||||
|
||||
/* change to the new working directory */
|
||||
@ -644,7 +736,7 @@ childProcess(void *arg)
|
||||
if (fcntl(FAIL_FILENO, F_SETFD, FD_CLOEXEC) == -1)
|
||||
goto WhyCantJohnnyExec;
|
||||
|
||||
execvpe(p->argv[0], p->argv, p->envv);
|
||||
JDK_execvpe(p->argv[0], p->argv, p->envv);
|
||||
|
||||
WhyCantJohnnyExec:
|
||||
/* We used to go to an awful lot of trouble to predict whether the
|
||||
@ -659,13 +751,62 @@ childProcess(void *arg)
|
||||
*/
|
||||
{
|
||||
int errnum = errno;
|
||||
write(FAIL_FILENO, &errnum, sizeof(errnum));
|
||||
restartableWrite(FAIL_FILENO, &errnum, sizeof(errnum));
|
||||
}
|
||||
close(FAIL_FILENO);
|
||||
restartableClose(FAIL_FILENO);
|
||||
_exit(-1);
|
||||
return 0; /* Suppress warning "no return value from function" */
|
||||
}
|
||||
|
||||
/**
|
||||
* Start a child process running function childProcess.
|
||||
* This function only returns in the parent.
|
||||
* We are unusually paranoid; use of clone/vfork is
|
||||
* especially likely to tickle gcc/glibc bugs.
|
||||
*/
|
||||
#ifdef __attribute_noinline__ /* See: sys/cdefs.h */
|
||||
__attribute_noinline__
|
||||
#endif
|
||||
static pid_t
|
||||
startChild(ChildStuff *c) {
|
||||
#if START_CHILD_USE_CLONE
|
||||
#define START_CHILD_CLONE_STACK_SIZE (64 * 1024)
|
||||
/*
|
||||
* See clone(2).
|
||||
* Instead of worrying about which direction the stack grows, just
|
||||
* allocate twice as much and start the stack in the middle.
|
||||
*/
|
||||
if ((c->clone_stack = malloc(2 * START_CHILD_CLONE_STACK_SIZE)) == NULL)
|
||||
/* errno will be set to ENOMEM */
|
||||
return -1;
|
||||
return clone(childProcess,
|
||||
c->clone_stack + START_CHILD_CLONE_STACK_SIZE,
|
||||
CLONE_VFORK | CLONE_VM | SIGCHLD, c);
|
||||
#else
|
||||
#if START_CHILD_USE_VFORK
|
||||
/*
|
||||
* We separate the call to vfork into a separate function to make
|
||||
* very sure to keep stack of child from corrupting stack of parent,
|
||||
* as suggested by the scary gcc warning:
|
||||
* warning: variable 'foo' might be clobbered by 'longjmp' or 'vfork'
|
||||
*/
|
||||
volatile pid_t resultPid = vfork();
|
||||
#else
|
||||
/*
|
||||
* From Solaris fork(2): In Solaris 10, a call to fork() is
|
||||
* identical to a call to fork1(); only the calling thread is
|
||||
* replicated in the child process. This is the POSIX-specified
|
||||
* behavior for fork().
|
||||
*/
|
||||
pid_t resultPid = fork();
|
||||
#endif
|
||||
if (resultPid == 0)
|
||||
childProcess(c);
|
||||
assert(resultPid != 0); /* childProcess never returns */
|
||||
return resultPid;
|
||||
#endif /* ! START_CHILD_USE_CLONE */
|
||||
}
|
||||
|
||||
JNIEXPORT jint JNICALL
|
||||
Java_java_lang_UNIXProcess_forkAndExec(JNIEnv *env,
|
||||
jobject process,
|
||||
@ -678,9 +819,6 @@ Java_java_lang_UNIXProcess_forkAndExec(JNIEnv *env,
|
||||
{
|
||||
int errnum;
|
||||
int resultPid = -1;
|
||||
#if USE_CLONE
|
||||
void *clone_stack = NULL;
|
||||
#endif
|
||||
int in[2], out[2], err[2], fail[2];
|
||||
jint *fds = NULL;
|
||||
const char *pprog = NULL;
|
||||
@ -694,6 +832,9 @@ Java_java_lang_UNIXProcess_forkAndExec(JNIEnv *env,
|
||||
c->argv = NULL;
|
||||
c->envv = NULL;
|
||||
c->pdir = NULL;
|
||||
#if START_CHILD_USE_CLONE
|
||||
c->clone_stack = NULL;
|
||||
#endif
|
||||
|
||||
/* Convert prog + argBlock into a char ** argv.
|
||||
* Add one word room for expansion of argv for use by
|
||||
@ -739,37 +880,15 @@ Java_java_lang_UNIXProcess_forkAndExec(JNIEnv *env,
|
||||
|
||||
c->redirectErrorStream = redirectErrorStream;
|
||||
|
||||
{
|
||||
#if USE_CLONE
|
||||
/* See clone(2).
|
||||
* Instead of worrying about which direction the stack grows, just
|
||||
* allocate twice as much and start the stack in the middle. */
|
||||
const int stack_size = 64 * 1024;
|
||||
if ((clone_stack = NEW(char, 2 * stack_size)) == NULL) goto Catch;
|
||||
resultPid = clone(childProcess, clone_stack + stack_size,
|
||||
/* CLONE_VFORK | // works, but unnecessary */
|
||||
CLONE_VM | SIGCHLD, c);
|
||||
#else
|
||||
/* From fork(2): In Solaris 10, a call to fork() is identical
|
||||
* to a call to fork1(); only the calling thread is replicated
|
||||
* in the child process. This is the POSIX-specified behavior
|
||||
* for fork(). */
|
||||
resultPid = fork();
|
||||
if (resultPid == 0) {
|
||||
childProcess(c);
|
||||
assert(0); /* childProcess must not return */
|
||||
}
|
||||
#endif
|
||||
}
|
||||
resultPid = startChild(c);
|
||||
assert(resultPid != 0);
|
||||
|
||||
if (resultPid < 0) {
|
||||
throwIOException(env, errno, "Fork failed");
|
||||
throwIOException(env, errno, START_CHILD_SYSTEM_CALL " failed");
|
||||
goto Catch;
|
||||
}
|
||||
|
||||
/* parent process */
|
||||
|
||||
close(fail[1]); fail[1] = -1; /* See: WhyCantJohnnyExec */
|
||||
restartableClose(fail[1]); fail[1] = -1; /* See: WhyCantJohnnyExec */
|
||||
|
||||
switch (readFully(fail[0], &errnum, sizeof(errnum))) {
|
||||
case 0: break; /* Exec succeeded */
|
||||
@ -787,8 +906,8 @@ Java_java_lang_UNIXProcess_forkAndExec(JNIEnv *env,
|
||||
fds[2] = (err[0] != -1) ? err[0] : -1;
|
||||
|
||||
Finally:
|
||||
#if USE_CLONE
|
||||
free(clone_stack);
|
||||
#if START_CHILD_USE_CLONE
|
||||
free(c->clone_stack);
|
||||
#endif
|
||||
|
||||
/* Always clean up the child's side of the pipes */
|
||||
|
||||
@ -92,6 +92,7 @@ class WindowsConstants {
|
||||
public static final int ERROR_INVALID_DATA = 13;
|
||||
public static final int ERROR_NOT_SAME_DEVICE = 17;
|
||||
public static final int ERROR_NOT_READY = 21;
|
||||
public static final int ERROR_SHARING_VIOLATION = 32;
|
||||
public static final int ERROR_FILE_EXISTS = 80;
|
||||
public static final int ERROR_INVALID_PARAMATER = 87;
|
||||
public static final int ERROR_DISK_FULL = 112;
|
||||
|
||||
@ -299,6 +299,9 @@ class WindowsFileAttributes
|
||||
throws WindowsException
|
||||
{
|
||||
if (!ensureAccurateMetadata) {
|
||||
WindowsException firstException = null;
|
||||
|
||||
// GetFileAttributesEx is the fastest way to read the attributes
|
||||
NativeBuffer buffer =
|
||||
NativeBuffers.getNativeBuffer(SIZEOF_FILE_ATTRIBUTE_DATA);
|
||||
try {
|
||||
@ -310,9 +313,39 @@ class WindowsFileAttributes
|
||||
.getInt(address + OFFSETOF_FILE_ATTRIBUTE_DATA_ATTRIBUTES);
|
||||
if ((fileAttrs & FILE_ATTRIBUTE_REPARSE_POINT) == 0)
|
||||
return fromFileAttributeData(address, 0);
|
||||
} catch (WindowsException x) {
|
||||
if (x.lastError() != ERROR_SHARING_VIOLATION)
|
||||
throw x;
|
||||
firstException = x;
|
||||
} finally {
|
||||
buffer.release();
|
||||
}
|
||||
|
||||
// For sharing violations, fallback to FindFirstFile if the file
|
||||
// is not a root directory.
|
||||
if (firstException != null) {
|
||||
String search = path.getPathForWin32Calls();
|
||||
char last = search.charAt(search.length() -1);
|
||||
if (last == ':' || last == '\\')
|
||||
throw firstException;
|
||||
buffer = getBufferForFindData();
|
||||
try {
|
||||
long handle = FindFirstFile(search, buffer.address());
|
||||
FindClose(handle);
|
||||
WindowsFileAttributes attrs = fromFindData(buffer.address());
|
||||
// FindFirstFile does not follow sym links. Even if
|
||||
// followLinks is false, there isn't sufficient information
|
||||
// in the WIN32_FIND_DATA structure to know if the reparse
|
||||
// point is a sym link.
|
||||
if (attrs.isReparsePoint())
|
||||
throw firstException;
|
||||
return attrs;
|
||||
} catch (WindowsException ignore) {
|
||||
throw firstException;
|
||||
} finally {
|
||||
buffer.release();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// file is reparse point so need to open file to get attributes
|
||||
|
||||
@ -29,7 +29,7 @@
|
||||
* @author jjh
|
||||
*
|
||||
* @run build TestScaffold VMConnection TargetListener TargetAdapter
|
||||
* @run compile -source 1.5 -target 1.5 -g EnumTest.java
|
||||
* @run compile -g EnumTest.java
|
||||
* @run main EnumTest
|
||||
*/
|
||||
import com.sun.jdi.*;
|
||||
|
||||
@ -29,7 +29,7 @@
|
||||
* @author jjh
|
||||
*
|
||||
* @run build TestScaffold VMConnection TargetListener TargetAdapter
|
||||
* @run compile -source 1.5 -target 1.5 -g GenericsTest.java
|
||||
* @run compile -g GenericsTest.java
|
||||
* @run main GenericsTest
|
||||
*/
|
||||
import com.sun.jdi.*;
|
||||
|
||||
@ -32,7 +32,6 @@
|
||||
# @run shell JdbVarargsTest.sh
|
||||
|
||||
classname=JdbVarargsTest
|
||||
compileOptions="-source 1.5 -target 1.5"
|
||||
createJavaFile()
|
||||
{
|
||||
cat <<EOF > $classname.java.1
|
||||
|
||||
@ -27,7 +27,7 @@
|
||||
* @author Gordon Hirsch
|
||||
*
|
||||
* @run build TestScaffold VMConnection TargetAdapter TargetListener
|
||||
* @run compile -g -target 1.5 MethodCalls.java
|
||||
* @run compile -g MethodCalls.java
|
||||
* @run compile -g MethodCallsReflection.java
|
||||
* @run compile -g ControlFlow.java
|
||||
* @run build StepTest
|
||||
|
||||
@ -29,7 +29,7 @@
|
||||
* @author jjh
|
||||
*
|
||||
* @run build TestScaffold VMConnection TargetListener TargetAdapter
|
||||
* @run compile -g -source 1.5 UTF8Test.java
|
||||
* @run compile -g UTF8Test.java
|
||||
* @run main UTF8Test
|
||||
*/
|
||||
|
||||
|
||||
@ -29,7 +29,7 @@
|
||||
* @author jjh
|
||||
*
|
||||
* @run build TestScaffold VMConnection TargetListener TargetAdapter
|
||||
* @run compile -g -source 1.5 -target 1.5 VarargsTest.java
|
||||
* @run compile -g VarargsTest.java
|
||||
* @run main VarargsTest
|
||||
*/
|
||||
import com.sun.jdi.*;
|
||||
|
||||
@ -30,6 +30,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
@ -39,7 +43,7 @@ case "$OS" in
|
||||
exit 1;
|
||||
;;
|
||||
esac
|
||||
${TESTJAVA}${FS}bin${FS}javac -d . -classpath ${TESTSRC}${FS}..${FS}..${FS}..${FS}sun${FS}net${FS}www${FS}httptest ${TESTSRC}${FS}B4933582.java
|
||||
${TESTJAVA}${FS}bin${FS}javac -d . -classpath "${TESTSRC}${FS}..${FS}..${FS}..${FS}sun${FS}net${FS}www${FS}httptest" ${TESTSRC}${FS}B4933582.java
|
||||
rm -f cache.ser auth.save
|
||||
${TESTJAVA}${FS}bin${FS}java -classpath ${TESTSRC}${FS}..${FS}..${FS}..${FS}sun${FS}net${FS}www${FS}httptest${PS}. B4933582 first
|
||||
${TESTJAVA}${FS}bin${FS}java -classpath ${TESTSRC}${FS}..${FS}..${FS}..${FS}sun${FS}net${FS}www${FS}httptest${PS}. B4933582 second
|
||||
${TESTJAVA}${FS}bin${FS}java -classpath "${TESTSRC}${FS}..${FS}..${FS}..${FS}sun${FS}net${FS}www${FS}httptest${PS}." B4933582 first
|
||||
${TESTJAVA}${FS}bin${FS}java -classpath "${TESTSRC}${FS}..${FS}..${FS}..${FS}sun${FS}net${FS}www${FS}httptest${PS}." B4933582 second
|
||||
|
||||
@ -35,6 +35,10 @@ case "$OS" in
|
||||
PATHSEP=":"
|
||||
FILESEP="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PATHSEP=";"
|
||||
FILESEP="/"
|
||||
;;
|
||||
Windows* )
|
||||
PATHSEP=";"
|
||||
FILESEP="\\"
|
||||
|
||||
@ -32,6 +32,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -29,6 +29,10 @@ case "$OS" in
|
||||
SunOS | Linux )
|
||||
exit 0
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -31,6 +31,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -42,6 +42,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -35,6 +35,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
@ -49,10 +53,10 @@ esac
|
||||
if [ x"$TESTJAVA" = x ]; then TESTJAVA=$1; fi
|
||||
if [ x"$TESTSRC" = x ]; then TESTSRC=.; fi
|
||||
|
||||
CLASSPATH=.${PS}${TESTSRC}${FS}a${PS}${TESTSRC}${FS}b.jar
|
||||
CLASSPATH=".${PS}${TESTSRC}${FS}a${PS}${TESTSRC}${FS}b.jar"
|
||||
|
||||
${TESTJAVA}${FS}bin${FS}javac -classpath ${CLASSPATH} -d . ${TESTSRC}${FS}CheckSealed.java
|
||||
${TESTJAVA}${FS}bin${FS}java -cp ${CLASSPATH} CheckSealed 1
|
||||
${TESTJAVA}${FS}bin${FS}javac -classpath "${CLASSPATH}" -d . ${TESTSRC}${FS}CheckSealed.java
|
||||
${TESTJAVA}${FS}bin${FS}java -cp "${CLASSPATH}" CheckSealed 1
|
||||
if [ $? != 0 ]; then exit 1; fi
|
||||
${TESTJAVA}${FS}bin${FS}java -cp ${CLASSPATH} CheckSealed 2
|
||||
${TESTJAVA}${FS}bin${FS}java -cp "${CLASSPATH}" CheckSealed 2
|
||||
if [ $? != 0 ]; then exit 1; fi
|
||||
|
||||
@ -41,6 +41,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -25,6 +25,7 @@
|
||||
* @bug 4527345
|
||||
* @summary Unit test for DatagramChannel's multicast support
|
||||
* @build BasicMulticastTests NetworkConfiguration
|
||||
* @run main BasicMulticastTests
|
||||
*/
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
|
||||
@ -25,6 +25,7 @@
|
||||
* @bug 4527345
|
||||
* @summary Unit test for DatagramChannel's multicast support
|
||||
* @build MulticastSendReceiveTests NetworkConfiguration
|
||||
* @run main MulticastSendReceiveTests
|
||||
*/
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
|
||||
@ -26,6 +26,7 @@
|
||||
* @summary Unit test for probeContentType method
|
||||
* @library ..
|
||||
* @build ContentType SimpleFileTypeDetector
|
||||
* @run main ContentType
|
||||
*/
|
||||
|
||||
import java.nio.file.*;
|
||||
|
||||
@ -22,7 +22,7 @@
|
||||
*/
|
||||
|
||||
/* @test
|
||||
* @bug 4313887 6838333
|
||||
* @bug 4313887 6838333 6866804
|
||||
* @summary Unit test for java.nio.file.Path for miscellenous methods not
|
||||
* covered by other tests
|
||||
* @library ..
|
||||
@ -106,6 +106,28 @@ public class Misc {
|
||||
dir.checkAccess(AccessMode.WRITE);
|
||||
dir.checkAccess(AccessMode.READ, AccessMode.WRITE);
|
||||
|
||||
/**
|
||||
* Test: Check access to all files in all root directories.
|
||||
* (A useful test on Windows for special files such as pagefile.sys)
|
||||
*/
|
||||
for (Path root: FileSystems.getDefault().getRootDirectories()) {
|
||||
DirectoryStream<Path> stream;
|
||||
try {
|
||||
stream = root.newDirectoryStream();
|
||||
} catch (IOException x) {
|
||||
continue; // skip root directories that aren't accessible
|
||||
}
|
||||
try {
|
||||
for (Path entry: stream) {
|
||||
try {
|
||||
entry.checkAccess();
|
||||
} catch (AccessDeniedException ignore) { }
|
||||
}
|
||||
} finally {
|
||||
stream.close();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Test: File does not exist
|
||||
*/
|
||||
|
||||
@ -54,6 +54,10 @@ case "$OS" in
|
||||
PATHSEP=":"
|
||||
FILESEP="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PATHSEP=";"
|
||||
FILESEP="/"
|
||||
;;
|
||||
Windows* )
|
||||
PATHSEP=";"
|
||||
FILESEP="\\"
|
||||
@ -81,7 +85,7 @@ ${TESTJAVA}${FILESEP}bin${FILESEP}javac \
|
||||
|
||||
# run the test
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}java \
|
||||
-classpath ${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}Deadlock.jar \
|
||||
-classpath "${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}Deadlock.jar" \
|
||||
ClassLoaderDeadlock
|
||||
|
||||
exit $?
|
||||
|
||||
@ -42,6 +42,10 @@ case "$OS" in
|
||||
PATHSEP=":"
|
||||
FILESEP="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PATHSEP=";"
|
||||
FILESEP="/"
|
||||
;;
|
||||
Windows* )
|
||||
PATHSEP=";"
|
||||
FILESEP="\\"
|
||||
@ -54,5 +58,5 @@ esac
|
||||
|
||||
JAVA="${TESTJAVA}${FILESEP}bin${FILESEP}java"
|
||||
|
||||
${JAVA} -cp ${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}Deadlock.jar Deadlock
|
||||
${JAVA} -cp "${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}Deadlock.jar" Deadlock
|
||||
|
||||
|
||||
@ -54,6 +54,10 @@ case "$OS" in
|
||||
PATHSEP=":"
|
||||
FILESEP="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PATHSEP=";"
|
||||
FILESEP="/"
|
||||
;;
|
||||
Windows* )
|
||||
PATHSEP=";"
|
||||
FILESEP="\\"
|
||||
@ -76,7 +80,7 @@ ${TESTJAVA}${FILESEP}bin${FILESEP}javac \
|
||||
|
||||
# run the test
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}java \
|
||||
-classpath ${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}exp.jar \
|
||||
-classpath "${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}exp.jar" \
|
||||
DynSignedProvFirst
|
||||
|
||||
exit $?
|
||||
|
||||
@ -54,6 +54,10 @@ case "$OS" in
|
||||
PATHSEP=":"
|
||||
FILESEP="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PATHSEP=";"
|
||||
FILESEP="/"
|
||||
;;
|
||||
Windows* )
|
||||
PATHSEP=";"
|
||||
FILESEP="\\"
|
||||
@ -70,14 +74,14 @@ rm StaticSignedProvFirst.class
|
||||
|
||||
# compile the test program
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}javac \
|
||||
-classpath ${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}exp.jar \
|
||||
-classpath "${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}exp.jar" \
|
||||
-d ${TESTCLASSES}${FILESEP} \
|
||||
${TESTSRC}${FILESEP}StaticSignedProvFirst.java
|
||||
|
||||
# run the test
|
||||
cd ${TESTSRC}${FILESEP}
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}java \
|
||||
-classpath ${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}exp.jar \
|
||||
-classpath "${TESTCLASSES}${PATHSEP}${TESTSRC}${FILESEP}exp.jar" \
|
||||
-Djava.security.properties=file:${TESTSRC}${FILESEP}Static.props \
|
||||
StaticSignedProvFirst
|
||||
|
||||
|
||||
@ -426,6 +426,36 @@ public class MOAT {
|
||||
q.poll();
|
||||
equal(q.size(), 4);
|
||||
checkFunctionalInvariants(q);
|
||||
if ((q instanceof LinkedBlockingQueue) ||
|
||||
(q instanceof LinkedBlockingDeque) ||
|
||||
(q instanceof ConcurrentLinkedQueue)) {
|
||||
testQueueIteratorRemove(q);
|
||||
}
|
||||
}
|
||||
|
||||
private static void testQueueIteratorRemove(Queue<Integer> q) {
|
||||
System.err.printf("testQueueIteratorRemove %s%n",
|
||||
q.getClass().getSimpleName());
|
||||
q.clear();
|
||||
for (int i = 0; i < 5; i++)
|
||||
q.add(i);
|
||||
Iterator<Integer> it = q.iterator();
|
||||
check(it.hasNext());
|
||||
for (int i = 3; i >= 0; i--)
|
||||
q.remove(i);
|
||||
equal(it.next(), 0);
|
||||
equal(it.next(), 4);
|
||||
|
||||
q.clear();
|
||||
for (int i = 0; i < 5; i++)
|
||||
q.add(i);
|
||||
it = q.iterator();
|
||||
equal(it.next(), 0);
|
||||
check(it.hasNext());
|
||||
for (int i = 1; i < 4; i++)
|
||||
q.remove(i);
|
||||
equal(it.next(), 1);
|
||||
equal(it.next(), 4);
|
||||
}
|
||||
|
||||
private static void testList(final List<Integer> l) {
|
||||
@ -451,6 +481,11 @@ public class MOAT {
|
||||
}
|
||||
|
||||
private static void testCollection(Collection<Integer> c) {
|
||||
try { testCollection1(c); }
|
||||
catch (Throwable t) { unexpected(t); }
|
||||
}
|
||||
|
||||
private static void testCollection1(Collection<Integer> c) {
|
||||
|
||||
System.out.println("\n==> " + c.getClass().getName());
|
||||
|
||||
|
||||
@ -486,6 +486,10 @@ public class Basic$Type$ extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -25,7 +25,7 @@
|
||||
* @summary Unit test for formatter
|
||||
* @bug 4906370 4962433 4973103 4989961 5005818 5031150 4970931 4989491 5002937
|
||||
* 5005104 5007745 5061412 5055180 5066788 5088703 6317248 6318369 6320122
|
||||
* 6344623 6369500 6534606 6282094 6286592 6476425
|
||||
* 6344623 6369500 6534606 6282094 6286592 6476425 5063507
|
||||
*
|
||||
* @run shell/timeout=240 Basic.sh
|
||||
*/
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicBigDecimal extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicBigInteger extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicBoolean extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicBooleanObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicByte extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicByteObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicChar extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicCharObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicDateTime extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicDouble extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicDoubleObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicFloat extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicFloatObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicInt extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicIntObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicLong extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicLongObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicShort extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
@ -486,6 +486,10 @@ public class BasicShortObject extends Basic {
|
||||
//---------------------------------------------------------------------
|
||||
tryCatch("%-s", MissingFormatWidthException.class);
|
||||
tryCatch("%--s", DuplicateFormatFlagsException.class);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
|
||||
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
|
||||
|
||||
//---------------------------------------------------------------------
|
||||
// %h
|
||||
|
||||
142
jdk/test/java/util/TimSort/ArrayBuilder.java
Normal file
142
jdk/test/java/util/TimSort/ArrayBuilder.java
Normal file
@ -0,0 +1,142 @@
|
||||
/*
|
||||
* Copyright 2009 Google Inc. All Rights Reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
import java.util.Random;
|
||||
import java.math.BigInteger;
|
||||
|
||||
public enum ArrayBuilder {
|
||||
|
||||
// These seven are from Tim's paper (listsort.txt)
|
||||
|
||||
RANDOM_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = rnd.nextInt();
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
DESCENDING_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = len - i;
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
ASCENDING_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = i;
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
ASCENDING_3_RND_EXCH_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = i;
|
||||
for (int i = 0; i < 3; i++)
|
||||
swap(result, rnd.nextInt(result.length),
|
||||
rnd.nextInt(result.length));
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
ASCENDING_10_RND_AT_END_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
int endStart = len - 10;
|
||||
for (int i = 0; i < endStart; i++)
|
||||
result[i] = i;
|
||||
for (int i = endStart; i < len; i++)
|
||||
result[i] = rnd.nextInt(endStart + 10);
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
ALL_EQUAL_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = 666;
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
DUPS_GALORE_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = rnd.nextInt(4);
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
RANDOM_WITH_DUPS_INT {
|
||||
public Object[] build(int len) {
|
||||
Integer[] result = new Integer[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = rnd.nextInt(len);
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
PSEUDO_ASCENDING_STRING {
|
||||
public String[] build(int len) {
|
||||
String[] result = new String[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = Integer.toString(i);
|
||||
return result;
|
||||
}
|
||||
},
|
||||
|
||||
RANDOM_BIGINT {
|
||||
public BigInteger[] build(int len) {
|
||||
BigInteger[] result = new BigInteger[len];
|
||||
for (int i = 0; i < len; i++)
|
||||
result[i] = HUGE.add(BigInteger.valueOf(rnd.nextInt(len)));
|
||||
return result;
|
||||
}
|
||||
};
|
||||
|
||||
public abstract Object[] build(int len);
|
||||
|
||||
public void resetRandom() {
|
||||
rnd = new Random(666);
|
||||
}
|
||||
|
||||
private static Random rnd = new Random(666);
|
||||
|
||||
private static void swap(Object[] a, int i, int j) {
|
||||
Object t = a[i];
|
||||
a[i] = a[j];
|
||||
a[j] = t;
|
||||
}
|
||||
|
||||
private static BigInteger HUGE = BigInteger.ONE.shiftLeft(100);
|
||||
}
|
||||
4
jdk/test/java/util/TimSort/README
Normal file
4
jdk/test/java/util/TimSort/README
Normal file
@ -0,0 +1,4 @@
|
||||
This directory contains benchmark programs used to compare the
|
||||
performance of the TimSort algorithm against the historic 1997
|
||||
implementation of Arrays.sort. Any future benchmarking will require
|
||||
minor modifications.
|
||||
66
jdk/test/java/util/TimSort/SortPerf.java
Normal file
66
jdk/test/java/util/TimSort/SortPerf.java
Normal file
@ -0,0 +1,66 @@
|
||||
/*
|
||||
* Copyright 2009 Google Inc. All Rights Reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
public class SortPerf {
|
||||
private static final int NUM_SETS = 5;
|
||||
private static final int[] lengths = { 10, 100, 1000, 10000, 1000000 };
|
||||
|
||||
// Returns the number of repetitions as a function of the list length
|
||||
private static int reps(int n) {
|
||||
return (int) (12000000 / (n * Math.log10(n)));
|
||||
}
|
||||
|
||||
public static void main(String[] args) {
|
||||
Sorter.warmup();
|
||||
|
||||
System.out.print("Strategy,Length");
|
||||
for (Sorter sorter : Sorter.values())
|
||||
System.out.print("," + sorter);
|
||||
System.out.println();
|
||||
|
||||
for (ArrayBuilder ab : ArrayBuilder.values()) {
|
||||
for (int n : lengths) {
|
||||
System.out.printf("%s,%d", ab, n);
|
||||
int reps = reps(n);
|
||||
Object[] proto = ab.build(n);
|
||||
for (Sorter sorter : Sorter.values()) {
|
||||
double minTime = Double.POSITIVE_INFINITY;
|
||||
for (int set = 0; set < NUM_SETS; set++) {
|
||||
long startTime = System.nanoTime();
|
||||
for (int k = 0; k < reps; k++) {
|
||||
Object[] a = proto.clone();
|
||||
sorter.sort(a);
|
||||
}
|
||||
long endTime = System.nanoTime();
|
||||
double time = (endTime - startTime) / (1000000. * reps);
|
||||
minTime = Math.min(minTime, time);
|
||||
}
|
||||
System.out.printf(",%5f", minTime);
|
||||
}
|
||||
System.out.println();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
55
jdk/test/java/util/TimSort/Sorter.java
Normal file
55
jdk/test/java/util/TimSort/Sorter.java
Normal file
@ -0,0 +1,55 @@
|
||||
/*
|
||||
* Copyright 2009 Google Inc. All Rights Reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
import java.util.*;
|
||||
|
||||
public enum Sorter {
|
||||
TIMSORT {
|
||||
public void sort(Object[] array) {
|
||||
ComparableTimSort.sort(array);
|
||||
}
|
||||
},
|
||||
MERGESORT {
|
||||
public void sort(Object[] array) {
|
||||
Arrays.sort(array);
|
||||
}
|
||||
};
|
||||
|
||||
public abstract void sort(Object[] array);
|
||||
|
||||
public static void warmup() {
|
||||
System.out.println("start warm up");
|
||||
Integer[] gold = new Integer[10000];
|
||||
Random random = new java.util.Random();
|
||||
for (int i=0; i < gold.length; i++)
|
||||
gold[i] = random.nextInt();
|
||||
|
||||
for (int i=0; i < 10000; i++) {
|
||||
for (Sorter s : values()) {
|
||||
Integer[] test= gold.clone();
|
||||
s.sort(test);
|
||||
}
|
||||
}
|
||||
System.out.println(" end warm up");
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,130 @@
|
||||
/*
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is available under and governed by the GNU General Public
|
||||
* License version 2 only, as published by the Free Software Foundation.
|
||||
* However, the following notice accompanied the original version of this
|
||||
* file:
|
||||
*
|
||||
* Written by Doug Lea with assistance from members of JCP JSR-166
|
||||
* Expert Group and released to the public domain, as explained at
|
||||
* http://creativecommons.org/licenses/publicdomain
|
||||
*/
|
||||
|
||||
/*
|
||||
* @test
|
||||
* @bug 6805775 6815766
|
||||
* @summary Test concurrent offer vs. drainTo
|
||||
*/
|
||||
|
||||
import java.util.*;
|
||||
import java.util.concurrent.*;
|
||||
|
||||
@SuppressWarnings({"unchecked", "rawtypes"})
|
||||
public class OfferDrainToLoops {
|
||||
void checkNotContainsNull(Iterable it) {
|
||||
for (Object x : it)
|
||||
check(x != null);
|
||||
}
|
||||
|
||||
abstract class CheckedThread extends Thread {
|
||||
abstract protected void realRun();
|
||||
public void run() {
|
||||
try { realRun(); } catch (Throwable t) { unexpected(t); }
|
||||
}
|
||||
{
|
||||
setDaemon(true);
|
||||
start();
|
||||
}
|
||||
}
|
||||
|
||||
void test(String[] args) throws Throwable {
|
||||
test(new LinkedBlockingQueue());
|
||||
test(new LinkedBlockingQueue(2000));
|
||||
test(new LinkedBlockingDeque());
|
||||
test(new LinkedBlockingDeque(2000));
|
||||
test(new ArrayBlockingQueue(2000));
|
||||
}
|
||||
|
||||
void test(final BlockingQueue q) throws Throwable {
|
||||
System.out.println(q.getClass().getSimpleName());
|
||||
final long testDurationSeconds = 1L;
|
||||
final long testDurationMillis = testDurationSeconds * 1000L;
|
||||
final long quittingTimeNanos
|
||||
= System.nanoTime() + testDurationSeconds * 1000L * 1000L * 1000L;
|
||||
|
||||
Thread offerer = new CheckedThread() {
|
||||
protected void realRun() {
|
||||
for (long i = 0; ; i++) {
|
||||
if ((i % 1024) == 0 &&
|
||||
System.nanoTime() - quittingTimeNanos > 0)
|
||||
break;
|
||||
while (! q.offer(i))
|
||||
Thread.yield();
|
||||
}}};
|
||||
|
||||
Thread drainer = new CheckedThread() {
|
||||
protected void realRun() {
|
||||
for (long i = 0; ; i++) {
|
||||
if (System.nanoTime() - quittingTimeNanos > 0)
|
||||
break;
|
||||
List list = new ArrayList();
|
||||
int n = q.drainTo(list);
|
||||
equal(list.size(), n);
|
||||
for (int j = 0; j < n - 1; j++)
|
||||
equal((Long) list.get(j) + 1L, list.get(j + 1));
|
||||
Thread.yield();
|
||||
}}};
|
||||
|
||||
Thread scanner = new CheckedThread() {
|
||||
protected void realRun() {
|
||||
for (long i = 0; ; i++) {
|
||||
if (System.nanoTime() - quittingTimeNanos > 0)
|
||||
break;
|
||||
checkNotContainsNull(q);
|
||||
Thread.yield();
|
||||
}}};
|
||||
|
||||
offerer.join(10 * testDurationMillis);
|
||||
drainer.join(10 * testDurationMillis);
|
||||
check(! offerer.isAlive());
|
||||
check(! drainer.isAlive());
|
||||
}
|
||||
|
||||
//--------------------- Infrastructure ---------------------------
|
||||
volatile int passed = 0, failed = 0;
|
||||
void pass() {passed++;}
|
||||
void fail() {failed++; Thread.dumpStack();}
|
||||
void fail(String msg) {System.err.println(msg); fail();}
|
||||
void unexpected(Throwable t) {failed++; t.printStackTrace();}
|
||||
void check(boolean cond) {if (cond) pass(); else fail();}
|
||||
void equal(Object x, Object y) {
|
||||
if (x == null ? y == null : x.equals(y)) pass();
|
||||
else fail(x + " not equal to " + y);}
|
||||
public static void main(String[] args) throws Throwable {
|
||||
new OfferDrainToLoops().instanceMain(args);}
|
||||
public void instanceMain(String[] args) throws Throwable {
|
||||
try {test(args);} catch (Throwable t) {unexpected(t);}
|
||||
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
|
||||
if (failed > 0) throw new AssertionError("Some tests failed");}
|
||||
}
|
||||
@ -33,9 +33,8 @@
|
||||
|
||||
/*
|
||||
* @test
|
||||
* @bug 4486658
|
||||
* @compile -source 1.5 ConcurrentQueueLoops.java
|
||||
* @run main/timeout=230 ConcurrentQueueLoops
|
||||
* @bug 4486658 6785442
|
||||
* @run main ConcurrentQueueLoops 8 123456
|
||||
* @summary Checks that a set of threads can repeatedly get and modify items
|
||||
*/
|
||||
|
||||
@ -44,34 +43,75 @@ import java.util.concurrent.*;
|
||||
import java.util.concurrent.atomic.*;
|
||||
|
||||
public class ConcurrentQueueLoops {
|
||||
static final ExecutorService pool = Executors.newCachedThreadPool();
|
||||
static AtomicInteger totalItems;
|
||||
static boolean print = false;
|
||||
ExecutorService pool;
|
||||
AtomicInteger totalItems;
|
||||
boolean print;
|
||||
|
||||
public static void main(String[] args) throws Exception {
|
||||
int maxStages = 8;
|
||||
int items = 100000;
|
||||
// Suitable for benchmarking. Overriden by args[0] for testing.
|
||||
int maxStages = 20;
|
||||
|
||||
// Suitable for benchmarking. Overriden by args[1] for testing.
|
||||
int items = 1024 * 1024;
|
||||
|
||||
Collection<Queue<Integer>> concurrentQueues() {
|
||||
List<Queue<Integer>> queues = new ArrayList<Queue<Integer>>();
|
||||
queues.add(new ConcurrentLinkedQueue<Integer>());
|
||||
queues.add(new ArrayBlockingQueue<Integer>(items, false));
|
||||
//queues.add(new ArrayBlockingQueue<Integer>(count, true));
|
||||
queues.add(new LinkedBlockingQueue<Integer>());
|
||||
queues.add(new LinkedBlockingDeque<Integer>());
|
||||
|
||||
try {
|
||||
queues.add((Queue<Integer>)
|
||||
Class.forName("java.util.concurrent.LinkedTransferQueue")
|
||||
.newInstance());
|
||||
} catch (IllegalAccessException e) {
|
||||
} catch (InstantiationException e) {
|
||||
} catch (ClassNotFoundException e) {
|
||||
// OK; not yet added to JDK
|
||||
}
|
||||
|
||||
// Following additional implementations are available from:
|
||||
// http://gee.cs.oswego.edu/dl/concurrency-interest/index.html
|
||||
// queues.add(new LinkedTransferQueue<Integer>());
|
||||
// queues.add(new SynchronizedLinkedListQueue<Integer>());
|
||||
|
||||
// Avoid "first fast, second slow" benchmark effect.
|
||||
Collections.shuffle(queues);
|
||||
return queues;
|
||||
}
|
||||
|
||||
void test(String[] args) throws Throwable {
|
||||
if (args.length > 0)
|
||||
maxStages = Integer.parseInt(args[0]);
|
||||
if (args.length > 1)
|
||||
items = Integer.parseInt(args[1]);
|
||||
|
||||
for (Queue<Integer> queue : concurrentQueues())
|
||||
test(queue);
|
||||
}
|
||||
|
||||
void test(final Queue<Integer> q) throws Throwable {
|
||||
System.out.println(q.getClass().getSimpleName());
|
||||
pool = Executors.newCachedThreadPool();
|
||||
print = false;
|
||||
|
||||
print = false;
|
||||
System.out.println("Warmup...");
|
||||
oneRun(1, items);
|
||||
Thread.sleep(100);
|
||||
oneRun(1, items);
|
||||
oneRun(1, items, q);
|
||||
//Thread.sleep(100);
|
||||
oneRun(3, items, q);
|
||||
Thread.sleep(100);
|
||||
print = true;
|
||||
|
||||
for (int i = 1; i <= maxStages; i += (i+1) >>> 1) {
|
||||
oneRun(i, items);
|
||||
oneRun(i, items, q);
|
||||
}
|
||||
pool.shutdown();
|
||||
if (! pool.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS))
|
||||
throw new Error();
|
||||
check(pool.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS));
|
||||
}
|
||||
|
||||
static class Stage implements Callable<Integer> {
|
||||
class Stage implements Callable<Integer> {
|
||||
final Queue<Integer> queue;
|
||||
final CyclicBarrier barrier;
|
||||
int items;
|
||||
@ -110,15 +150,11 @@ public class ConcurrentQueueLoops {
|
||||
}
|
||||
return new Integer(l);
|
||||
}
|
||||
catch (Exception ie) {
|
||||
ie.printStackTrace();
|
||||
throw new Error("Call loop failed");
|
||||
}
|
||||
catch (Throwable t) { unexpected(t); return null; }
|
||||
}
|
||||
}
|
||||
|
||||
static void oneRun(int n, int items) throws Exception {
|
||||
Queue<Integer> q = new ConcurrentLinkedQueue<Integer>();
|
||||
void oneRun(int n, int items, final Queue<Integer> q) throws Exception {
|
||||
LoopHelpers.BarrierTimer timer = new LoopHelpers.BarrierTimer();
|
||||
CyclicBarrier barrier = new CyclicBarrier(n + 1, timer);
|
||||
totalItems = new AtomicInteger(n * items);
|
||||
@ -141,6 +177,22 @@ public class ConcurrentQueueLoops {
|
||||
System.out.println(LoopHelpers.rightJustify(time / (items * n)) + " ns per item");
|
||||
if (total == 0) // avoid overoptimization
|
||||
System.out.println("useless result: " + total);
|
||||
|
||||
}
|
||||
|
||||
//--------------------- Infrastructure ---------------------------
|
||||
volatile int passed = 0, failed = 0;
|
||||
void pass() {passed++;}
|
||||
void fail() {failed++; Thread.dumpStack();}
|
||||
void fail(String msg) {System.err.println(msg); fail();}
|
||||
void unexpected(Throwable t) {failed++; t.printStackTrace();}
|
||||
void check(boolean cond) {if (cond) pass(); else fail();}
|
||||
void equal(Object x, Object y) {
|
||||
if (x == null ? y == null : x.equals(y)) pass();
|
||||
else fail(x + " not equal to " + y);}
|
||||
public static void main(String[] args) throws Throwable {
|
||||
new ConcurrentQueueLoops().instanceMain(args);}
|
||||
public void instanceMain(String[] args) throws Throwable {
|
||||
try {test(args);} catch (Throwable t) {unexpected(t);}
|
||||
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
|
||||
if (failed > 0) throw new AssertionError("Some tests failed");}
|
||||
}
|
||||
165
jdk/test/java/util/concurrent/ConcurrentQueues/GCRetention.java
Normal file
165
jdk/test/java/util/concurrent/ConcurrentQueues/GCRetention.java
Normal file
@ -0,0 +1,165 @@
|
||||
/*
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is available under and governed by the GNU General Public
|
||||
* License version 2 only, as published by the Free Software Foundation.
|
||||
* However, the following notice accompanied the original version of this
|
||||
* file:
|
||||
*
|
||||
* Written by Doug Lea with assistance from members of JCP JSR-166
|
||||
* Expert Group and released to the public domain, as explained at
|
||||
* http://creativecommons.org/licenses/publicdomain
|
||||
*/
|
||||
/*
|
||||
* @test
|
||||
* @bug 6785442
|
||||
* @summary Benchmark that tries to GC-tenure head, followed by
|
||||
* many add/remove operations.
|
||||
* @run main GCRetention 12345
|
||||
*/
|
||||
|
||||
import java.util.concurrent.ArrayBlockingQueue;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentLinkedQueue;
|
||||
import java.util.concurrent.LinkedBlockingQueue;
|
||||
import java.util.concurrent.LinkedBlockingDeque;
|
||||
import java.util.concurrent.PriorityBlockingQueue;
|
||||
import java.util.LinkedList;
|
||||
import java.util.PriorityQueue;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collection;
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
import java.util.Queue;
|
||||
import java.util.Map;
|
||||
|
||||
public class GCRetention {
|
||||
// Suitable for benchmarking. Overriden by args[0] for testing.
|
||||
int count = 1024 * 1024;
|
||||
|
||||
final Map<String,String> results = new ConcurrentHashMap<String,String>();
|
||||
|
||||
Collection<Queue<Boolean>> queues() {
|
||||
List<Queue<Boolean>> queues = new ArrayList<Queue<Boolean>>();
|
||||
queues.add(new ConcurrentLinkedQueue<Boolean>());
|
||||
queues.add(new ArrayBlockingQueue<Boolean>(count, false));
|
||||
queues.add(new ArrayBlockingQueue<Boolean>(count, true));
|
||||
queues.add(new LinkedBlockingQueue<Boolean>());
|
||||
queues.add(new LinkedBlockingDeque<Boolean>());
|
||||
queues.add(new PriorityBlockingQueue<Boolean>());
|
||||
queues.add(new PriorityQueue<Boolean>());
|
||||
queues.add(new LinkedList<Boolean>());
|
||||
|
||||
try {
|
||||
queues.add((Queue<Boolean>)
|
||||
Class.forName("java.util.concurrent.LinkedTransferQueue")
|
||||
.newInstance());
|
||||
} catch (IllegalAccessException e) {
|
||||
} catch (InstantiationException e) {
|
||||
} catch (ClassNotFoundException e) {
|
||||
// OK; not yet added to JDK
|
||||
}
|
||||
|
||||
// Following additional implementations are available from:
|
||||
// http://gee.cs.oswego.edu/dl/concurrency-interest/index.html
|
||||
// queues.add(new LinkedTransferQueue<Boolean>());
|
||||
// queues.add(new SynchronizedLinkedListQueue<Boolean>());
|
||||
|
||||
// Avoid "first fast, second slow" benchmark effect.
|
||||
Collections.shuffle(queues);
|
||||
return queues;
|
||||
}
|
||||
|
||||
void prettyPrintResults() {
|
||||
List<String> classNames = new ArrayList<String>(results.keySet());
|
||||
Collections.sort(classNames);
|
||||
int maxClassNameLength = 0;
|
||||
int maxNanosLength = 0;
|
||||
for (String name : classNames) {
|
||||
if (maxClassNameLength < name.length())
|
||||
maxClassNameLength = name.length();
|
||||
if (maxNanosLength < results.get(name).length())
|
||||
maxNanosLength = results.get(name).length();
|
||||
}
|
||||
String format = String.format("%%%ds %%%ds nanos/item%%n",
|
||||
maxClassNameLength, maxNanosLength);
|
||||
for (String name : classNames)
|
||||
System.out.printf(format, name, results.get(name));
|
||||
}
|
||||
|
||||
void test(String[] args) {
|
||||
if (args.length > 0)
|
||||
count = Integer.valueOf(args[0]);
|
||||
// Warmup
|
||||
for (Queue<Boolean> queue : queues())
|
||||
test(queue);
|
||||
results.clear();
|
||||
for (Queue<Boolean> queue : queues())
|
||||
test(queue);
|
||||
|
||||
prettyPrintResults();
|
||||
}
|
||||
|
||||
void test(Queue<Boolean> q) {
|
||||
long t0 = System.nanoTime();
|
||||
for (int i = 0; i < count; i++)
|
||||
check(q.add(Boolean.TRUE));
|
||||
System.gc();
|
||||
System.gc();
|
||||
Boolean x;
|
||||
while ((x = q.poll()) != null)
|
||||
equal(x, Boolean.TRUE);
|
||||
check(q.isEmpty());
|
||||
|
||||
for (int i = 0; i < 10 * count; i++) {
|
||||
for (int k = 0; k < 3; k++)
|
||||
check(q.add(Boolean.TRUE));
|
||||
for (int k = 0; k < 3; k++)
|
||||
if (q.poll() != Boolean.TRUE)
|
||||
fail();
|
||||
}
|
||||
check(q.isEmpty());
|
||||
|
||||
String className = q.getClass().getSimpleName();
|
||||
long elapsed = System.nanoTime() - t0;
|
||||
int nanos = (int) ((double) elapsed / (10 * 3 * count));
|
||||
results.put(className, String.valueOf(nanos));
|
||||
}
|
||||
|
||||
//--------------------- Infrastructure ---------------------------
|
||||
volatile int passed = 0, failed = 0;
|
||||
void pass() {passed++;}
|
||||
void fail() {failed++; Thread.dumpStack();}
|
||||
void fail(String msg) {System.err.println(msg); fail();}
|
||||
void unexpected(Throwable t) {failed++; t.printStackTrace();}
|
||||
void check(boolean cond) {if (cond) pass(); else fail();}
|
||||
void equal(Object x, Object y) {
|
||||
if (x == null ? y == null : x.equals(y)) pass();
|
||||
else fail(x + " not equal to " + y);}
|
||||
public static void main(String[] args) throws Throwable {
|
||||
new GCRetention().instanceMain(args);}
|
||||
public void instanceMain(String[] args) throws Throwable {
|
||||
try {test(args);} catch (Throwable t) {unexpected(t);}
|
||||
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
|
||||
if (failed > 0) throw new AssertionError("Some tests failed");}
|
||||
}
|
||||
@ -0,0 +1,93 @@
|
||||
/*
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is available under and governed by the GNU General Public
|
||||
* License version 2 only, as published by the Free Software Foundation.
|
||||
* However, the following notice accompanied the original version of this
|
||||
* file:
|
||||
*
|
||||
* Written by Doug Lea with assistance from members of JCP JSR-166
|
||||
* Expert Group and released to the public domain, as explained at
|
||||
* http://creativecommons.org/licenses/publicdomain
|
||||
*/
|
||||
|
||||
import java.util.*;
|
||||
import java.util.concurrent.*;
|
||||
|
||||
/*
|
||||
* @test
|
||||
* @bug 6805775 6815766
|
||||
* @summary Check weak consistency of concurrent queue iterators
|
||||
*/
|
||||
|
||||
@SuppressWarnings({"unchecked", "rawtypes"})
|
||||
public class IteratorWeakConsistency {
|
||||
|
||||
void test(String[] args) throws Throwable {
|
||||
test(new LinkedBlockingQueue());
|
||||
test(new LinkedBlockingQueue(20));
|
||||
test(new LinkedBlockingDeque());
|
||||
test(new LinkedBlockingDeque(20));
|
||||
test(new ConcurrentLinkedQueue());
|
||||
// Other concurrent queues (e.g. ArrayBlockingQueue) do not
|
||||
// currently have weakly consistent iterators.
|
||||
// test(new ArrayBlockingQueue(20));
|
||||
}
|
||||
|
||||
void test(Queue q) throws Throwable {
|
||||
// TODO: make this more general
|
||||
for (int i = 0; i < 10; i++)
|
||||
q.add(i);
|
||||
Iterator it = q.iterator();
|
||||
q.poll();
|
||||
q.poll();
|
||||
q.poll();
|
||||
q.remove(7);
|
||||
List list = new ArrayList();
|
||||
while (it.hasNext())
|
||||
list.add(it.next());
|
||||
equal(list, Arrays.asList(0, 3, 4, 5, 6, 8, 9));
|
||||
check(! list.contains(null));
|
||||
System.out.printf("%s: %s%n",
|
||||
q.getClass().getSimpleName(),
|
||||
list);
|
||||
}
|
||||
|
||||
//--------------------- Infrastructure ---------------------------
|
||||
volatile int passed = 0, failed = 0;
|
||||
void pass() {passed++;}
|
||||
void fail() {failed++; Thread.dumpStack();}
|
||||
void fail(String msg) {System.err.println(msg); fail();}
|
||||
void unexpected(Throwable t) {failed++; t.printStackTrace();}
|
||||
void check(boolean cond) {if (cond) pass(); else fail();}
|
||||
void equal(Object x, Object y) {
|
||||
if (x == null ? y == null : x.equals(y)) pass();
|
||||
else fail(x + " not equal to " + y);}
|
||||
static Class<?> thisClass = new Object(){}.getClass().getEnclosingClass();
|
||||
public static void main(String[] args) throws Throwable {
|
||||
new IteratorWeakConsistency().instanceMain(args);}
|
||||
public void instanceMain(String[] args) throws Throwable {
|
||||
try {test(args);} catch (Throwable t) {unexpected(t);}
|
||||
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
|
||||
if (failed > 0) throw new AssertionError("Some tests failed");}
|
||||
}
|
||||
@ -0,0 +1,230 @@
|
||||
/*
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||||
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||||
* have any questions.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is available under and governed by the GNU General Public
|
||||
* License version 2 only, as published by the Free Software Foundation.
|
||||
* However, the following notice accompanied the original version of this
|
||||
* file:
|
||||
*
|
||||
* Written by Doug Lea with assistance from members of JCP JSR-166
|
||||
* Expert Group and released to the public domain, as explained at
|
||||
* http://creativecommons.org/licenses/publicdomain
|
||||
*/
|
||||
|
||||
/*
|
||||
* @test
|
||||
* @bug 6785442
|
||||
* @summary Checks race between poll and remove(Object), while
|
||||
* occasionally moonlighting as a microbenchmark.
|
||||
* @run main RemovePollRace 12345
|
||||
*/
|
||||
|
||||
import java.util.concurrent.ArrayBlockingQueue;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentLinkedQueue;
|
||||
import java.util.concurrent.CountDownLatch;
|
||||
import java.util.concurrent.LinkedBlockingDeque;
|
||||
import java.util.concurrent.LinkedBlockingQueue;
|
||||
import java.util.concurrent.atomic.AtomicLong;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collection;
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
import java.util.Queue;
|
||||
import java.util.Map;
|
||||
|
||||
public class RemovePollRace {
|
||||
// Suitable for benchmarking. Overriden by args[0] for testing.
|
||||
int count = 1024 * 1024;
|
||||
|
||||
final Map<String,String> results = new ConcurrentHashMap<String,String>();
|
||||
|
||||
Collection<Queue<Boolean>> concurrentQueues() {
|
||||
List<Queue<Boolean>> queues = new ArrayList<Queue<Boolean>>();
|
||||
queues.add(new ConcurrentLinkedQueue<Boolean>());
|
||||
queues.add(new ArrayBlockingQueue<Boolean>(count, false));
|
||||
queues.add(new ArrayBlockingQueue<Boolean>(count, true));
|
||||
queues.add(new LinkedBlockingQueue<Boolean>());
|
||||
queues.add(new LinkedBlockingDeque<Boolean>());
|
||||
|
||||
try {
|
||||
queues.add((Queue<Boolean>)
|
||||
Class.forName("java.util.concurrent.LinkedTransferQueue")
|
||||
.newInstance());
|
||||
} catch (IllegalAccessException e) {
|
||||
} catch (InstantiationException e) {
|
||||
} catch (ClassNotFoundException e) {
|
||||
// OK; not yet added to JDK
|
||||
}
|
||||
|
||||
// Following additional implementations are available from:
|
||||
// http://gee.cs.oswego.edu/dl/concurrency-interest/index.html
|
||||
// queues.add(new LinkedTransferQueue<Boolean>());
|
||||
// queues.add(new SynchronizedLinkedListQueue<Boolean>());
|
||||
|
||||
// Avoid "first fast, second slow" benchmark effect.
|
||||
Collections.shuffle(queues);
|
||||
return queues;
|
||||
}
|
||||
|
||||
void prettyPrintResults() {
|
||||
List<String> classNames = new ArrayList<String>(results.keySet());
|
||||
Collections.sort(classNames);
|
||||
int maxClassNameLength = 0;
|
||||
int maxNanosLength = 0;
|
||||
for (String name : classNames) {
|
||||
if (maxClassNameLength < name.length())
|
||||
maxClassNameLength = name.length();
|
||||
if (maxNanosLength < results.get(name).length())
|
||||
maxNanosLength = results.get(name).length();
|
||||
}
|
||||
String format = String.format("%%%ds %%%ds nanos/item%%n",
|
||||
maxClassNameLength, maxNanosLength);
|
||||
for (String name : classNames)
|
||||
System.out.printf(format, name, results.get(name));
|
||||
}
|
||||
|
||||
void test(String[] args) throws Throwable {
|
||||
if (args.length > 0)
|
||||
count = Integer.valueOf(args[0]);
|
||||
// Warmup
|
||||
for (Queue<Boolean> queue : concurrentQueues())
|
||||
test(queue);
|
||||
results.clear();
|
||||
for (Queue<Boolean> queue : concurrentQueues())
|
||||
test(queue);
|
||||
|
||||
prettyPrintResults();
|
||||
}
|
||||
|
||||
void await(CountDownLatch latch) {
|
||||
try { latch.await(); }
|
||||
catch (InterruptedException e) { unexpected(e); }
|
||||
}
|
||||
|
||||
void test(final Queue<Boolean> q) throws Throwable {
|
||||
long t0 = System.nanoTime();
|
||||
final int SPINS = 5;
|
||||
final AtomicLong removes = new AtomicLong(0);
|
||||
final AtomicLong polls = new AtomicLong(0);
|
||||
final int adderCount =
|
||||
Math.max(1, Runtime.getRuntime().availableProcessors() / 4);
|
||||
final int removerCount =
|
||||
Math.max(1, Runtime.getRuntime().availableProcessors() / 4);
|
||||
final int pollerCount = removerCount;
|
||||
final int threadCount = adderCount + removerCount + pollerCount;
|
||||
final CountDownLatch startingGate = new CountDownLatch(1);
|
||||
final CountDownLatch addersDone = new CountDownLatch(adderCount);
|
||||
final Runnable remover = new Runnable() {
|
||||
public void run() {
|
||||
await(startingGate);
|
||||
int spins = 0;
|
||||
for (;;) {
|
||||
boolean quittingTime = (addersDone.getCount() == 0);
|
||||
if (q.remove(Boolean.TRUE))
|
||||
removes.getAndIncrement();
|
||||
else if (quittingTime)
|
||||
break;
|
||||
else if (++spins > SPINS) {
|
||||
Thread.yield();
|
||||
spins = 0;
|
||||
}}}};
|
||||
final Runnable poller = new Runnable() {
|
||||
public void run() {
|
||||
await(startingGate);
|
||||
int spins = 0;
|
||||
for (;;) {
|
||||
boolean quittingTime = (addersDone.getCount() == 0);
|
||||
if (q.poll() == Boolean.TRUE)
|
||||
polls.getAndIncrement();
|
||||
else if (quittingTime)
|
||||
break;
|
||||
else if (++spins > SPINS) {
|
||||
Thread.yield();
|
||||
spins = 0;
|
||||
}}}};
|
||||
final Runnable adder = new Runnable() {
|
||||
public void run() {
|
||||
await(startingGate);
|
||||
for (int i = 0; i < count; i++) {
|
||||
for (;;) {
|
||||
try { q.add(Boolean.TRUE); break; }
|
||||
catch (IllegalStateException e) { Thread.yield(); }
|
||||
}
|
||||
}
|
||||
addersDone.countDown();
|
||||
}};
|
||||
|
||||
final List<Thread> adders = new ArrayList<Thread>();
|
||||
final List<Thread> removers = new ArrayList<Thread>();
|
||||
final List<Thread> pollers = new ArrayList<Thread>();
|
||||
for (int i = 0; i < adderCount; i++)
|
||||
adders.add(checkedThread(adder));
|
||||
for (int i = 0; i < removerCount; i++)
|
||||
removers.add(checkedThread(remover));
|
||||
for (int i = 0; i < pollerCount; i++)
|
||||
pollers.add(checkedThread(poller));
|
||||
|
||||
final List<Thread> allThreads = new ArrayList<Thread>();
|
||||
allThreads.addAll(removers);
|
||||
allThreads.addAll(pollers);
|
||||
allThreads.addAll(adders);
|
||||
|
||||
for (Thread t : allThreads)
|
||||
t.start();
|
||||
startingGate.countDown();
|
||||
for (Thread t : allThreads)
|
||||
t.join();
|
||||
|
||||
String className = q.getClass().getSimpleName();
|
||||
long elapsed = System.nanoTime() - t0;
|
||||
int nanos = (int) ((double) elapsed / (adderCount * count));
|
||||
results.put(className, String.valueOf(nanos));
|
||||
if (removes.get() + polls.get() != adderCount * count) {
|
||||
String msg = String.format
|
||||
("class=%s removes=%s polls=%d count=%d",
|
||||
className, removes.get(), polls.get(), count);
|
||||
fail(msg);
|
||||
}
|
||||
}
|
||||
|
||||
//--------------------- Infrastructure ---------------------------
|
||||
volatile int passed = 0, failed = 0;
|
||||
void pass() {passed++;}
|
||||
void fail() {failed++; Thread.dumpStack();}
|
||||
void fail(String msg) {System.err.println(msg); fail();}
|
||||
void unexpected(Throwable t) {failed++; t.printStackTrace();}
|
||||
void check(boolean cond) {if (cond) pass(); else fail();}
|
||||
void equal(Object x, Object y) {
|
||||
if (x == null ? y == null : x.equals(y)) pass();
|
||||
else fail(x + " not equal to " + y);}
|
||||
public static void main(String[] args) throws Throwable {
|
||||
new RemovePollRace().instanceMain(args);}
|
||||
public void instanceMain(String[] args) throws Throwable {
|
||||
try {test(args);} catch (Throwable t) {unexpected(t);}
|
||||
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
|
||||
if (failed > 0) throw new AssertionError("Some tests failed");}
|
||||
Thread checkedThread(final Runnable r) {
|
||||
return new Thread() {public void run() {
|
||||
try {r.run();} catch (Throwable t) {unexpected(t);}}};}
|
||||
}
|
||||
@ -28,62 +28,74 @@
|
||||
* @author Martin Buchholz
|
||||
*/
|
||||
|
||||
import java.util.*;
|
||||
import java.util.concurrent.*;
|
||||
|
||||
public class OfferRemoveLoops {
|
||||
private static void realMain(String[] args) throws Throwable {
|
||||
void test(String[] args) throws Throwable {
|
||||
testQueue(new LinkedBlockingQueue<String>(10));
|
||||
testQueue(new LinkedBlockingQueue<String>());
|
||||
testQueue(new LinkedBlockingDeque<String>(10));
|
||||
testQueue(new LinkedBlockingDeque<String>());
|
||||
testQueue(new ArrayBlockingQueue<String>(10));
|
||||
testQueue(new PriorityBlockingQueue<String>(10));
|
||||
testQueue(new ConcurrentLinkedQueue<String>());
|
||||
}
|
||||
|
||||
private abstract static class ControlledThread extends Thread {
|
||||
abstract class CheckedThread extends Thread {
|
||||
abstract protected void realRun();
|
||||
public void run() {
|
||||
try { realRun(); } catch (Throwable t) { unexpected(t); }
|
||||
}
|
||||
}
|
||||
|
||||
private static void testQueue(final BlockingQueue<String> q) throws Throwable {
|
||||
System.out.println(q.getClass());
|
||||
final int count = 10000;
|
||||
final long quittingTime = System.nanoTime() + 1L * 1000L * 1000L * 1000L;
|
||||
Thread t1 = new ControlledThread() {
|
||||
protected void realRun() {
|
||||
for (int i = 0, j = 0; i < count; i++)
|
||||
while (! q.remove(String.valueOf(i))
|
||||
&& System.nanoTime() - quittingTime < 0)
|
||||
Thread.yield();}};
|
||||
Thread t2 = new ControlledThread() {
|
||||
protected void realRun() {
|
||||
for (int i = 0, j = 0; i < count; i++)
|
||||
while (! q.offer(String.valueOf(i))
|
||||
&& System.nanoTime() - quittingTime < 0)
|
||||
Thread.yield();}};
|
||||
void testQueue(final Queue<String> q) throws Throwable {
|
||||
System.out.println(q.getClass().getSimpleName());
|
||||
final int count = 1000 * 1000;
|
||||
final long testDurationSeconds = 1L;
|
||||
final long testDurationMillis = testDurationSeconds * 1000L;
|
||||
final long quittingTimeNanos
|
||||
= System.nanoTime() + testDurationSeconds * 1000L * 1000L * 1000L;
|
||||
Thread t1 = new CheckedThread() {
|
||||
protected void realRun() {
|
||||
for (int i = 0; i < count; i++) {
|
||||
if ((i % 1024) == 0 &&
|
||||
System.nanoTime() - quittingTimeNanos > 0)
|
||||
return;
|
||||
while (! q.remove(String.valueOf(i)))
|
||||
Thread.yield();
|
||||
}}};
|
||||
Thread t2 = new CheckedThread() {
|
||||
protected void realRun() {
|
||||
for (int i = 0; i < count; i++) {
|
||||
if ((i % 1024) == 0 &&
|
||||
System.nanoTime() - quittingTimeNanos > 0)
|
||||
return;
|
||||
while (! q.offer(String.valueOf(i)))
|
||||
Thread.yield();
|
||||
}}};
|
||||
t1.setDaemon(true); t2.setDaemon(true);
|
||||
t1.start(); t2.start();
|
||||
t1.join(10000); t2.join(10000);
|
||||
t1.join(10 * testDurationMillis);
|
||||
t2.join(10 * testDurationMillis);
|
||||
check(! t1.isAlive());
|
||||
check(! t2.isAlive());
|
||||
}
|
||||
|
||||
//--------------------- Infrastructure ---------------------------
|
||||
static volatile int passed = 0, failed = 0;
|
||||
static void pass() { passed++; }
|
||||
static void fail() { failed++; Thread.dumpStack(); }
|
||||
static void unexpected(Throwable t) { failed++; t.printStackTrace(); }
|
||||
static void check(boolean cond) { if (cond) pass(); else fail(); }
|
||||
static void equal(Object x, Object y) {
|
||||
volatile int passed = 0, failed = 0;
|
||||
void pass() {passed++;}
|
||||
void fail() {failed++; Thread.dumpStack();}
|
||||
void fail(String msg) {System.err.println(msg); fail();}
|
||||
void unexpected(Throwable t) {failed++; t.printStackTrace();}
|
||||
void check(boolean cond) {if (cond) pass(); else fail();}
|
||||
void equal(Object x, Object y) {
|
||||
if (x == null ? y == null : x.equals(y)) pass();
|
||||
else {System.out.println(x + " not equal to " + y); fail(); }}
|
||||
|
||||
else fail(x + " not equal to " + y);}
|
||||
public static void main(String[] args) throws Throwable {
|
||||
try { realMain(args); } catch (Throwable t) { unexpected(t); }
|
||||
|
||||
new OfferRemoveLoops().instanceMain(args);}
|
||||
public void instanceMain(String[] args) throws Throwable {
|
||||
try {test(args);} catch (Throwable t) {unexpected(t);}
|
||||
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
|
||||
if (failed > 0) throw new Exception("Some tests failed");
|
||||
}
|
||||
if (failed > 0) throw new AssertionError("Some tests failed");}
|
||||
}
|
||||
|
||||
@ -56,6 +56,11 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
@ -69,7 +74,7 @@ esac
|
||||
|
||||
${TESTJAVA}${FS}bin${FS}javac \
|
||||
-d . \
|
||||
-classpath ${TESTSRC}${FS}P1.jar${PS}${TESTSRC}${FS}P2.jar \
|
||||
-classpath "${TESTSRC}${FS}P1.jar${PS}${TESTSRC}${FS}P2.jar" \
|
||||
${TESTSRC}${FS}FailOverTest.java
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
@ -77,7 +82,7 @@ if [ $? -ne 0 ]; then
|
||||
fi
|
||||
|
||||
${TESTJAVA}${FS}bin${FS}java \
|
||||
-classpath ${TESTSRC}${FS}P1.jar${PS}${TESTSRC}${FS}P2.jar${PS}. \
|
||||
-classpath "${TESTSRC}${FS}P1.jar${PS}${TESTSRC}${FS}P2.jar${PS}." \
|
||||
FailOverTest
|
||||
result=$?
|
||||
|
||||
|
||||
@ -43,6 +43,11 @@ case "$OS" in
|
||||
FS="/"
|
||||
RM="/bin/rm -f"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
RM="rm"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -56,6 +56,12 @@ case "$OS" in
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
Windows_95 | Windows_98 | Windows_NT )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
|
||||
@ -32,6 +32,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -32,6 +32,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -32,6 +32,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -39,6 +39,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -28,23 +28,54 @@
|
||||
# @summary various resource and classloading bugs related to jar files
|
||||
#set -x
|
||||
DEST=`pwd`
|
||||
|
||||
OS=`uname -s`
|
||||
case "$OS" in
|
||||
SunOS )
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
Linux )
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
#
|
||||
# javac does not like /cygdrive produced by `pwd`.
|
||||
#
|
||||
DEST=`cygpath -d ${DEST}`
|
||||
;;
|
||||
* )
|
||||
echo "Unrecognized system!"
|
||||
exit 1;
|
||||
;;
|
||||
esac
|
||||
|
||||
#
|
||||
# build jar1
|
||||
#
|
||||
mkdir ${DEST}/jar1
|
||||
cd ${TESTSRC}/etc/jar1
|
||||
cp -r . ${DEST}/jar1
|
||||
${TESTJAVA}/bin/javac -d ${DEST}/jar1 ${TESTSRC}/src/jar1/LoadResourceBundle.java
|
||||
${TESTJAVA}/bin/javac -d ${DEST}/jar1 ${TESTSRC}/src/jar1/GetResource.java
|
||||
cd ${DEST}/jar1
|
||||
${TESTJAVA}/bin/jar cfM jar1.jar jar1 res1.txt
|
||||
mkdir -p ${DEST}${FS}jar1
|
||||
cd ${TESTSRC}${FS}etc${FS}jar1
|
||||
cp -r . ${DEST}${FS}jar1
|
||||
${TESTJAVA}${FS}bin${FS}javac -d ${DEST}${FS}jar1 \
|
||||
${TESTSRC}${FS}src${FS}jar1${FS}LoadResourceBundle.java
|
||||
${TESTJAVA}${FS}bin${FS}javac -d ${DEST}${FS}jar1 \
|
||||
${TESTSRC}${FS}src${FS}jar1${FS}GetResource.java
|
||||
cd ${DEST}${FS}jar1
|
||||
${TESTJAVA}${FS}bin${FS}jar cfM jar1.jar jar1 res1.txt
|
||||
mv jar1.jar ..
|
||||
#
|
||||
# build the test sources and run them
|
||||
#
|
||||
${TESTJAVA}/bin/javac -d ${DEST} ${TESTSRC}/src/test/*.java
|
||||
${TESTJAVA}${FS}bin${FS}javac -d ${DEST} ${TESTSRC}${FS}src${FS}test${FS}*.java
|
||||
cd ${DEST}
|
||||
${TESTJAVA}/bin/java RunAllTests
|
||||
${TESTJAVA}${FS}bin${FS}java RunAllTests
|
||||
result=$?
|
||||
if [ "$result" -ne "0" ]; then
|
||||
exit 1
|
||||
|
||||
@ -23,7 +23,7 @@
|
||||
/*
|
||||
* @test
|
||||
* @bug 6857795
|
||||
* @buf 6858589
|
||||
* @bug 6858589
|
||||
* @summary krb5.conf ignored if system properties on realm and kdc are provided
|
||||
*/
|
||||
|
||||
|
||||
@ -68,6 +68,20 @@ case "$OS" in
|
||||
CP="cp"
|
||||
CHMOD="chmod"
|
||||
;;
|
||||
CYGWIN* )
|
||||
FS="/"
|
||||
PS=";"
|
||||
CP="cp"
|
||||
CHMOD="chmod"
|
||||
#
|
||||
# javac does not like /cygdrive produced by `pwd`
|
||||
#
|
||||
TESTSRC=`cygpath -d ${TESTSRC}`
|
||||
;;
|
||||
* )
|
||||
echo "Unrecognized system!"
|
||||
exit 1;
|
||||
;;
|
||||
esac
|
||||
|
||||
# compile test
|
||||
|
||||
@ -69,6 +69,20 @@ case "$OS" in
|
||||
CP="cp"
|
||||
CHMOD="chmod"
|
||||
;;
|
||||
CYGWIN* )
|
||||
FS="/"
|
||||
PS=";"
|
||||
CP="cp"
|
||||
CHMOD="chmod"
|
||||
#
|
||||
# javac does not like /cygdrive produced by `pwd`
|
||||
#
|
||||
TESTSRC=`cygpath -d ${TESTSRC}`
|
||||
;;
|
||||
* )
|
||||
echo "Unrecognized system!"
|
||||
exit 1;
|
||||
;;
|
||||
esac
|
||||
|
||||
# first make cert/key DBs writable
|
||||
|
||||
@ -55,6 +55,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
|
||||
@ -43,10 +43,17 @@ fi
|
||||
OS=`uname -s`
|
||||
case "$OS" in
|
||||
SunOS | Linux )
|
||||
FILESEP="/"
|
||||
PATHSEP=":"
|
||||
;;
|
||||
|
||||
CYGWIN* )
|
||||
FILESEP="/"
|
||||
PATHSEP=";"
|
||||
;;
|
||||
|
||||
Windows* )
|
||||
FILESEP="\\"
|
||||
PATHSEP=";"
|
||||
;;
|
||||
esac
|
||||
@ -56,11 +63,13 @@ set -ex
|
||||
#
|
||||
# Compile the tests, package into their respective jars
|
||||
#
|
||||
${TESTJAVA}/bin/javac -d . \
|
||||
${TESTSRC}/NotifyHandshakeTest.java \
|
||||
${TESTSRC}/NotifyHandshakeTestHeyYou.java
|
||||
${TESTJAVA}/bin/jar -cvf com.jar com/NotifyHandshakeTest*.class
|
||||
${TESTJAVA}/bin/jar -cvf edu.jar edu/NotifyHandshakeTestHeyYou.class
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}javac -d . \
|
||||
${TESTSRC}${FILESEP}NotifyHandshakeTest.java \
|
||||
${TESTSRC}${FILESEP}NotifyHandshakeTestHeyYou.java
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}jar -cvf com.jar \
|
||||
com${FILESEP}NotifyHandshakeTest*.class
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}jar -cvf edu.jar \
|
||||
edu${FILESEP}NotifyHandshakeTestHeyYou.class
|
||||
|
||||
#
|
||||
# Don't want the original class files to be used, because
|
||||
@ -73,11 +82,11 @@ rm -rf com edu
|
||||
# This is the only thing we really care about as far as
|
||||
# test status goes.
|
||||
#
|
||||
${TESTJAVA}/bin/java \
|
||||
${TESTJAVA}${FILESEP}bin${FILESEP}java \
|
||||
-Dtest.src=${TESTSRC} \
|
||||
-classpath "com.jar${PATHSEP}edu.jar" \
|
||||
-Djava.security.manager \
|
||||
-Djava.security.policy=${TESTSRC}/NotifyHandshakeTest.policy \
|
||||
-Djava.security.policy=${TESTSRC}${FILESEP}NotifyHandshakeTest.policy \
|
||||
com.NotifyHandshakeTest
|
||||
retval=$?
|
||||
|
||||
|
||||
@ -36,6 +36,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
@ -46,6 +50,7 @@ case "$OS" in
|
||||
;;
|
||||
esac
|
||||
|
||||
${TESTJAVA}${FS}bin${FS}javac -d . ${TESTSRC}${FS}OriginServer.java ${TESTSRC}${FS}ProxyTunnelServer.java ${TESTSRC}${FS}PostThruProxy.java
|
||||
${TESTJAVA}${FS}bin${FS}javac -d . ${TESTSRC}${FS}OriginServer.java \
|
||||
${TESTSRC}${FS}ProxyTunnelServer.java ${TESTSRC}${FS}PostThruProxy.java
|
||||
${TESTJAVA}${FS}bin${FS}java PostThruProxy ${HOSTNAME} ${TESTSRC}
|
||||
exit
|
||||
|
||||
@ -36,6 +36,10 @@ case "$OS" in
|
||||
PS=":"
|
||||
FS="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PS=";"
|
||||
FS="/"
|
||||
;;
|
||||
Windows* )
|
||||
PS=";"
|
||||
FS="\\"
|
||||
@ -46,6 +50,8 @@ case "$OS" in
|
||||
;;
|
||||
esac
|
||||
|
||||
${TESTJAVA}${FS}bin${FS}javac -d . ${TESTSRC}${FS}OriginServer.java ${TESTSRC}${FS}ProxyTunnelServer.java ${TESTSRC}${FS}PostThruProxyWithAuth.java
|
||||
${TESTJAVA}${FS}bin${FS}javac -d . ${TESTSRC}${FS}OriginServer.java \
|
||||
${TESTSRC}${FS}ProxyTunnelServer.java \
|
||||
${TESTSRC}${FS}PostThruProxyWithAuth.java
|
||||
${TESTJAVA}${FS}bin${FS}java PostThruProxyWithAuth ${HOSTNAME} ${TESTSRC}
|
||||
exit
|
||||
|
||||
@ -53,6 +53,13 @@ case "$OS" in
|
||||
CP="${FS}bin${FS}cp -f"
|
||||
TMP=/tmp
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
CP="cp -f"
|
||||
TMP=/tmp
|
||||
;;
|
||||
Windows_* )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
|
||||
@ -53,6 +53,13 @@ case "$OS" in
|
||||
CP="${FS}bin${FS}cp -f"
|
||||
TMP=/tmp
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
CP="cp -f"
|
||||
TMP=/tmp
|
||||
;;
|
||||
Windows_* )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
|
||||
@ -49,6 +49,13 @@ case "$OS" in
|
||||
CP="${FS}bin${FS}cp -f"
|
||||
TMP=/tmp
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
CP="cp -f"
|
||||
TMP=/tmp
|
||||
;;
|
||||
Windows_* )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
|
||||
@ -52,6 +52,12 @@ case "$OS" in
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
Windows_* )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
@ -66,14 +72,21 @@ esac
|
||||
|
||||
# the test code
|
||||
#genkey
|
||||
${TESTJAVA}${FS}bin${FS}keytool -genkey -v -alias dummyTestCA -keyalg "RSA" -keysize 1024 -sigalg "ShA1WithRSA" -dname "cn=Dummy Test CA, ou=JSN, o=JavaSoft, c=US" -validity 3650 -keypass storepass -keystore keystoreCA.dks -storepass storepass -storetype "dks" -provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
${TESTJAVA}${FS}bin${FS}keytool -genkey -v -alias dummyTestCA \
|
||||
-keyalg "RSA" -keysize 1024 -sigalg "ShA1WithRSA" \
|
||||
-dname "cn=Dummy Test CA, ou=JSN, o=JavaSoft, c=US" -validity 3650 \
|
||||
-keypass storepass -keystore keystoreCA.dks -storepass storepass \
|
||||
-storetype "dks" -provider "org.test.dummy.DummyProvider" \
|
||||
-providerPath ${TESTCLASSES}
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
exit 1
|
||||
fi
|
||||
|
||||
#Change keystore password
|
||||
${TESTJAVA}${FS}bin${FS}keytool -storepasswd -new storepass2 -keystore keystoreCA.dks -storetype "dks" -storepass storepass -provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
${TESTJAVA}${FS}bin${FS}keytool -storepasswd -new storepass2 \
|
||||
-keystore keystoreCA.dks -storetype "dks" -storepass storepass \
|
||||
-provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
exit 1
|
||||
@ -81,21 +94,29 @@ fi
|
||||
|
||||
|
||||
#Change keystore key password
|
||||
${TESTJAVA}${FS}bin${FS}keytool -keypasswd -alias "dummyTestCA" -keypass storepass -new keypass -keystore keystoreCA.dks -storetype "dks" -storepass storepass2 -provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
${TESTJAVA}${FS}bin${FS}keytool -keypasswd -alias "dummyTestCA" \
|
||||
-keypass storepass -new keypass -keystore keystoreCA.dks \
|
||||
-storetype "dks" -storepass storepass2 \
|
||||
-provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
exit 1
|
||||
fi
|
||||
|
||||
#Export certificate
|
||||
${TESTJAVA}${FS}bin${FS}keytool -v -export -rfc -alias "dummyTestCA" -file "dummyTestCA.der" -keystore keystoreCA.dks -storetype "dks" -storepass storepass2 -provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
${TESTJAVA}${FS}bin${FS}keytool -v -export -rfc -alias "dummyTestCA" \
|
||||
-file "dummyTestCA.der" -keystore keystoreCA.dks -storetype "dks" \
|
||||
-storepass storepass2 -provider "org.test.dummy.DummyProvider" \
|
||||
-providerPath ${TESTCLASSES}
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
exit 1
|
||||
fi
|
||||
|
||||
#list keystore
|
||||
${TESTJAVA}${FS}bin${FS}keytool -v -list -keystore keystoreCA.dks -storetype "dks" -storepass storepass2 -provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
${TESTJAVA}${FS}bin${FS}keytool -v -list -keystore keystoreCA.dks \
|
||||
-storetype "dks" -storepass storepass2 \
|
||||
-provider "org.test.dummy.DummyProvider" -providerPath ${TESTCLASSES}
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
exit 1
|
||||
|
||||
@ -55,6 +55,10 @@ case "$OS" in
|
||||
PATHSEP=":"
|
||||
FILESEP="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
PATHSEP=";"
|
||||
FILESEP="/"
|
||||
;;
|
||||
Windows* )
|
||||
PATHSEP=";"
|
||||
FILESEP="\\"
|
||||
|
||||
@ -48,6 +48,9 @@ case "$OS" in
|
||||
Linux )
|
||||
FILESEP="/"
|
||||
;;
|
||||
CYGWIN* )
|
||||
FILESEP="/"
|
||||
;;
|
||||
Windows* )
|
||||
FILESEP="\\"
|
||||
;;
|
||||
|
||||
@ -51,6 +51,12 @@ case "$OS" in
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
Windows_* )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
|
||||
@ -52,6 +52,12 @@ case "$OS" in
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
CYGWIN* )
|
||||
NULL=/dev/null
|
||||
PS=";"
|
||||
FS="/"
|
||||
TMP=/tmp
|
||||
;;
|
||||
Windows_* )
|
||||
NULL=NUL
|
||||
PS=";"
|
||||
|
||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue
Block a user