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969 Commits

Author SHA1 Message Date
Per Lidén
4a4c0fce93 8029075: String deduplication in G1 
Implementation of JEP 192, http://openjdk.java.net/jeps/192

Reviewed-by: brutisso, tschatzl, coleenp
 2014-03-18 19:07:22 +01:00
Jesper Wilhelmsson
1e1ad7f132 8036025: Sort the freelist in order to shrink the heap 
The free list is being maintained in a sorted fashion and old and humongous regions are allocated from the bottom of the heap while young regions are allocated at the top.

Co-authored-by: Staffan Friberg <staffan.friberg@oracle.com>
Reviewed-by: tschatzl, mgerdin
 2014-02-28 15:27:09 +01:00
Erik Helin
853fffb2cb 8036703: Add trace event with statistics for the metaspace chunk free lists 
Reviewed-by: stefank, mgerdin, coleenp, egahlin
 2014-03-18 09:03:28 +01:00
Erik Helin
1fb0683664 8036696: Add metaspace gc threshold to metaspace summary trace event 
Reviewed-by: jmasa, stefank, mgerdin
 2014-03-17 17:31:46 +01:00
Per Lidén
731ef44b87 8036673: G1: Abort weak reference processing if mark stack overflows 
Reviewed-by: brutisso, tschatzl
 2014-03-17 15:18:45 +01:00
Per Lidén
d75f47a49d 8036672: G1: alloc_purpose in copy_to_survivor_space() used incorrectly 
Reviewed-by: brutisso, tschatzl
 2014-03-17 15:18:38 +01:00
Bengt Rutisson
13792b1aa7 8037407: G1: Remove heapRegionSets.cpp 
Reviewed-by: tschatzl, pliden
 2014-03-17 13:42:16 +01:00
Thomas Schatzl
a07b2194f7 8036860: Pad and cache-align the BiasedMappedArray 
Pad and cache-align BiasedMappedArray instances by default to avoid performance variability problems due to false sharing, as instances of this data structures are typically used for performance sensitive code.

Reviewed-by: brutisso, stefank
 2014-03-17 13:07:55 +01:00
Thomas Schatzl
483ea400a5 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure 
Mentioned closures are actually wrapped methods. This adds confusion to readers, and in this case also increases code size as G1ParScanHeapEvacClosure is part of the oop_oop_iterate() methods. Move them into G1ParScanThreadState as methods.

Reviewed-by: stefank
 2014-03-17 10:07:51 +01:00
Thomas Schatzl
375e6df9ee 8034868: Extract G1 From Card Cache into separate class 
Refactor the From Card Cache into a separate class.

Reviewed-by: jmasa
 2014-03-17 10:13:55 +01:00
Thomas Schatzl
2a8616c9d6 8035654: Add times for evacuation failure handling in "Other" time 
Detailed breakdown of time spent in the evacuation failure handling phases to make the "Other" time roughly correspond to the sum of its parts.

Reviewed-by: jwilhelm, jmasa
 2014-03-17 10:13:42 +01:00
Thomas Schatzl
80188ce0b2 8035398: Add card redirty time in "Other" time in G1 
Show the time taken by card redirtying during GC in a new "Redirty Cards" line.

Reviewed-by: jwilhelm, brutisso
 2014-03-17 10:13:27 +01:00
Thomas Schatzl
d3e28ca682 8027295: Free CSet takes ~50% of young pause time 
Improve fast card cache iteration and avoid taking locks when freeing the collection set.

Reviewed-by: brutisso
 2014-03-17 10:13:18 +01:00
Thomas Schatzl
cde8aa670b 8035815: Cache-align and pad the from card cache 
The from card cache is a very frequently accessed data structure. It is essentially a 2d array of per-region values, one row of values for every GC thread. Pad and align the data structure to avoid false sharing.

Reviewed-by: stefank
 2014-03-17 10:12:47 +01:00
Thomas Schatzl
329e55e7b0 8035406: Improve data structure for Code Cache remembered sets 
Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time.

Reviewed-by: mgerdin, brutisso
 2014-03-17 10:12:21 +01:00
Bengt Rutisson
c88e3def4d 8034079: G1: Refactor the HeapRegionSet hierarchy 
Reviewed-by: tschatzl, pliden
 2014-03-14 10:15:46 +01:00
Jon Masamitsu
8c7d064ee8 7098155: Resize young gen at full collections for UseParallelGC 
Reviewed-by: tschatzl
 2014-03-05 07:34:35 -08:00
Stefan Johansson
b1cfdfafe2 8028498: runtime/SharedArchiveFile/CdsDifferentObjectAlignment.java asserts in RT_Baseline 
Preventing GCs to occur before VM is completely initialized. This was previously partly done by one part of the GC locker which not was removed.

Reviewed-by: coleenp, pliden
 2014-02-13 10:05:03 +01:00
Stefan Karlsson
a8f01c3f99 8038630: Remove ExtendedOopClosure::prefetch_style() 
Reviewed-by: coleenp, jmasa
 2014-03-28 14:15:03 +01:00
Stefan Karlsson
f2de069dc2 8038628: Remove unused Closure::abort() 
Reviewed-by: coleenp, jmasa
 2014-03-28 14:03:11 +01:00
Mikael Gerdin
1fdc7cd78f 8038405: Clean up some virtual fucntions in Space class hierarchy 
Get rid of some duplicated implementations and change nonsense implementations to pure virtuals

Reviewed-by: stefank, jmasa
 2014-03-12 15:25:35 +01:00
Mikael Gerdin
c62c16f94a 8038412: Move object_iterate_careful down from Space to ContigousSpace and CFLSpace 
Only declare the functions where they are actually needed.

Reviewed-by: tschatzl, stefank
 2014-03-12 17:13:48 +01:00
Mikael Gerdin
e72dd1b433 8038404: Move object_iterate_mem from Space to CMS since it is only ever used by CMS 
Reviewed-by: brutisso, tschatzl, stefank
 2014-03-12 15:22:45 +01:00
Erik Helin
a45b9ead44 Merge 2014-02-25 11:02:11 +01:00
Thomas Schatzl
7de1730b10 8034948: Back out JDK-6976350 since it does not fix any issue 
Revert JDK-6976350 because it does not improve PLAB fragmentation. To the contrary, it tends to increase the amount of wasted space with many threads.

Reviewed-by: brutisso
 2014-02-24 10:45:15 +01:00
Thomas Schatzl
2ae60596ed 8035329: Move G1ParCopyClosure::copy_to_survivor_space into G1ParScanThreadState 
Move G1ParCopyClosure::copy_to_survivor_space to decrease code size.

Reviewed-by: stefank, jmasa
 2014-02-24 09:41:04 +01:00
Thomas Schatzl
dbc8581147 8035326: Assume non-NULL references in G1CollectedHeap::in_cset_fast_test 
Remove the assumption that G1CollectedHeap::in_cset_fast_test needs to check for NULL references. Most of the time this is not required, making the code doing this check multiple times.

Reviewed-by: stefank, mgerdin, jmasa
 2014-02-24 09:40:49 +01:00
Thomas Schatzl
6c588725c1 8027559: Decrease code size and templatizing in G1ParCopyClosure::do_oop_work 
Move methods that are not dependent on any of G1ParCopyClosure's template parameters into G1ParCopyHelper. Further remove unused methods and members of the class hierarchy.

Reviewed-by: mgerdin, stefank
 2014-02-24 09:40:21 +01:00
Stefan Karlsson
4248787654 8035393: Use CLDClosure instead of CLDToOopClosure in frame::oops_interpreted_do 
Reviewed-by: tschatzl, coleenp
 2014-02-21 10:01:20 +01:00
Erik Helin
7b6d31b4a5 Merge 2014-02-21 10:00:46 +01:00
Vladimir Kozlov
4200d0d095 Merge 2014-02-20 12:20:56 -08:00
Vladimir Kozlov
5117e1a805 Merge 2014-02-19 12:08:49 -08:00
Staffan Larsen
43b711ea78 8034080: Remove the USDT1 dtrace code from Hotspot 
Reviewed-by: dholmes, coleenp
 2014-02-18 09:15:40 +01:00
Stefan Johansson
10d4420b08 8033440: jmap reports unexpected used/free size of concurrent mark-sweep generation 
SA used the wrong type for the indexedFreeList in CompactibleFreeListSpace.

Reviewed-by: coleenp, dsamersoff
 2014-02-17 09:51:37 +01:00
Erik Helin
83a8157179 Merge 2014-02-17 10:13:28 +01:00
Erik Helin
c5ef624e7c Merge 2014-02-13 17:57:27 +01:00
Ioi Lam
7f138c5502 7182040: volano29 limited by os resource on Linux - need better diagnostic message 
Changed message to "unable to create native thread: possibly out of memory or process/resource limits reached"

Reviewed-by: dholmes, sla
 2014-02-11 08:43:17 -08:00
Matthias Baesken
2b8f41202a 8034171: Remove use of template template parameters from binaryTreeDictionary 
Reviewed-by: mgerdin, jmasa
 2014-02-11 09:34:50 +01:00
Stefan Karlsson
2a5c51998d 8034764: Use process_strong_roots to adjust the StringTable 
Reviewed-by: tschatzl, brutisso
 2014-02-14 09:29:56 +01:00
Stefan Karlsson
2a866afcdb 8034761: Remove the do_code_roots parameter from process_strong_roots 
Reviewed-by: tschatzl, mgerdin, jmasa
 2014-02-13 17:44:39 +01:00
Erik Helin
4b802a6d31 Merge 2014-01-30 14:01:45 +01:00
Jesper Wilhelmsson
5301534dc3 8028391: Make the Min/MaxHeapFreeRatio flags manageable 
Made the flags Min- and MaxHeapFreeRatio manageable, and implemented support for these flags in ParallalGC.

Reviewed-by: sla, mgerdin, brutisso
 2014-01-29 23:17:05 +01:00
Vladimir Kozlov
c3a0e80e0b Merge 2014-01-28 12:25:34 -08:00
Harold Seigel
9aea544943 Merge 2014-01-19 20:23:46 -05:00
Staffan Larsen
b35fb5f8c0 8030812: Change the solaris DTrace implementation to use USDT2 instead of USDT1 
Reviewed-by: coleenp, sspitsyn, dsamersoff
 2014-01-16 20:14:21 +01:00
Stefan Johansson
a23ee6de8d 8031686: G1: assert(_hrs.max_length() == _expansion_regions) failed 
Using pointer_delta to avoid overflowing pointer calculation.

Reviewed-by: jmasa, tschatzl
 2014-01-20 10:55:54 +01:00
Bengt Rutisson
9b29efeb63 8030177: G1: Enable TLAB resizing 
Reviewed-by: tschatzl, stefank, jmasa
 2014-01-27 13:14:53 +01:00
Jesper Wilhelmsson
81ba2e32c0 8025856: Fix typos in the GC code 
Fix about 440 typos in comments in the VM code

Reviewed-by: mgerdin, tschatzl, coleenp, kmo, jcoomes
 2014-01-23 14:47:23 +01:00
Mikael Gerdin
4c7c3f0613 8032379: Remove the is_scavenging flag to process_strong_roots 
Refactor the strong root processing to avoid using a boolean in addition to the ScanOption enum.

Reviewed-by: stefank, tschatzl, ehelin, jmasa
 2014-01-14 16:40:33 +01:00
Stefan Johansson
8ce7c46ec7 8020277: Young GC could be extremely slow due to assertion in ObjectStartArray::object_starts_in_range 
8009462: Young GC's (ParNewGC and SerialGC) have unexpected variances

Removed the assertion slowing down GC.

Reviewed-by: stefank, mgerdin
 2014-01-20 12:56:18 +01:00