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101 Commits

Author SHA1 Message Date
Jesper Wilhelmsson
5f5b27baba Merge 2015-03-23 22:08:14 +01:00
Jesper Wilhelmsson
c1bc0a31b2 8074459: Flags handling memory sizes should be of type size_t 
Changed the type to size_t for flags that handles memory sizes

Reviewed-by: kbarrett, tschatzl
 2015-03-03 18:01:27 +01:00
Goetz Lindenmaier
a7edf52a02 8073315: Enable gcc -Wtype-limits and fix upcoming issues 
Relevant fixes in blockOffsetTable.cpp, os_linux.cpp, parCardTableModRefBS.cpp.

Reviewed-by: jwilhelm, kbarrett, simonis
 2015-02-16 14:07:36 +01:00
Erik Helin
be4035c60a 8030646: track collection set membership in one place 
Reviewed-by: tschatzl, jwilhelm
 2015-01-26 10:32:35 +01:00
Kim Barrett
40d3986051 8069016: Add BarrierSet downcast support 
Add FakeRttiSupport utility and use to provide barrier_set_cast.

Reviewed-by: jmasa, sangheki
 2015-02-27 19:52:48 -05:00
Thomas Schatzl
ba4a04aa05 8069760: When iterating over a card, G1 often iterates over much more references than are contained in the card 
Properly bound the iteration work for objArray-oops.

Reviewed-by: mgerdin, kbarrett
 2015-02-02 10:38:39 +01:00
Erik Helin
759740976b 8068971: A heap region being cleared should not belong to the cset 
Reviewed-by: brutisso, tschatzl
 2015-01-16 14:43:45 +01:00
Mikael Gerdin
cc786b287d 8067655: Clean up G1 remembered set oop iteration 
Pass on the static type G1ParPushHeapRSClosure to allow oop_iterate devirtualization

Reviewed-by: jmasa, kbarrett
 2014-12-08 18:57:33 +01:00
David Lindholm
bcf9ea6cbf 8073463: G1 does not mangle freed heap regions 
Reviewed-by: mgerdin, jwilhelm
 2015-03-12 14:09:36 +01:00
Mikael Gerdin
b5ef32af36 8065358: Refactor G1s usage of save_marks and reduce related races 
Stop using save_marks in G1 related code and make setting the replacement field less racy.

Reviewed-by: brutisso, tschatzl
 2014-11-26 10:53:31 +01:00
Mikael Gerdin
4feb7b4dab 8058209: Race in G1 card scanning could allow scanning of memory covered by PLABs 
Read _top before _gc_time_stamp in saved_mark_word() with LoadLoad order to ensure we get a consistent view

Reviewed-by: brutisso, dcubed, dholmes, stefank
 2014-11-14 14:23:25 +01:00
Marcus Larsson
5fd7516136 8043243: convert SCAN_AND_FORWARD, SCAN_AND_ADJUST_POINTERS, SCAN_AND_COMPACT macros to methods 
Reviewed-by: mgerdin, kbarrett
 2014-10-30 12:45:22 +01:00
Marcus Larsson
6d1c35615a 8058298: Separate heap region iterator claim values from the data structures iterated over 
Reviewed-by: tschatzl, brutisso
 2014-10-07 14:54:53 +02:00
Antonios Printezis
da5afa76ab 8058495: G1: normalize names for isHumongous() and friends 
Reviewed-by: tschatzl, brutisso
 2014-09-23 11:43:24 +02:00
Stefan Johansson
0856ec5961 8057710: Refactor G1 heap region default sizes 
Refactored the defines to instead be static const in a HeapRegionBounds class.

Reviewed-by: mgerdin, tschatzl
 2014-09-09 04:48:41 +02:00
Stefan Johansson
3e6d46d28b 8057658: Enable G1 FullGC extensions 
Refactored the G1 FullGC code to enable it to be extended.

Reviewed-by: mgerdin, brutisso
 2014-09-09 00:05:25 +02:00
Stefan Johansson
f8137659f5 8057536: Refactor G1 to allow context specific allocations 
Splitting out a g1 allocator class to simply specialized allocators which can associate each allocation with a given context.

Reviewed-by: mgerdin, brutisso
 2014-09-05 09:49:19 +02:00
Joseph Provino
bc07a22d12 8058534: Remove HeapRegion::_orig_end 
Also reviewed by kim.barrett@oracle.com

Reviewed-by: tonyp, brutisso, tschatzl
 2014-09-19 09:23:55 +02:00
Antonios Printezis
a2984b6c88 8057768: Make heap region region type in G1 HeapRegion explicit 
Reviewed-by: brutisso, tschatzl
 2014-09-15 12:19:31 +02:00
Bengt Rutisson
ff1498ba6b 8025564: gc/memory/UniThread/Linear1 times out during heap verification 
Reviewed-by: stefank, tschatzl
 2014-09-08 10:41:06 +02:00
Mikael Gerdin
10379e7e82 8048268: G1 Code Root Migration performs poorly 
Replace G1CodeRootSet with a Hashtable based implementation, merge Code Root Migration phase into Code Root Scanning

Reviewed-by: jmasa, brutisso, tschatzl
 2014-08-29 13:12:21 +02:00
Bengt Rutisson
bbe82cb85b 8055816: Remove dead code in g1BlockOffsetTable 
Reviewed-by: tschatzl, mgerdin
 2014-08-27 10:51:08 +02:00
Thomas Schatzl
9086b5795f 8054819: Rename HeapRegionSeq to HeapRegionManager 
Reviewed-by: jwilhelm, jmasa
 2014-08-26 09:36:53 +02:00
Thomas Schatzl
2ee5ee89d4 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data 
Let HeapRegionSeq manage the heap region and auxiliary data to decrease the amount of responsibilities of G1CollectedHeap, and encapsulate this work from other code.

Reviewed-by: jwilhelm, jmasa, mgerdin, brutisso
 2014-08-18 16:10:44 +02:00
Thomas Schatzl
bc56e061ec 8048112: G1 Full GC needs to support the case when the very first region is not available 
Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett.

Reviewed-by: brutisso
 2014-07-21 10:00:31 +02:00
Stefan Karlsson
1b001a2afd 8049421: G1 Class Unloading after completing a concurrent mark cycle 
Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
 2014-07-07 10:12:40 +02:00
Stefan Karlsson
ef1e9b3c80 8049420: Backout 8048248 to correct attribution 
Reviewed-by: ehelin, brutisso
 2014-07-07 12:37:11 +02:00
Stefan Karlsson
8c3aced316 8048248: G1 Class Unloading after completing a concurrent mark cycle 
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
 2014-07-07 10:12:40 +02:00
Mikael Gerdin
1e1ef4f73f 8047818: G1 HeapRegions can no longer be ContiguousSpaces 
Change parent of G1OffsetTableContigSpace to CompactibleSpace, reimplement missing functionality

Reviewed-by: stefank, jmasa, tschatzl
 2014-06-26 11:36:58 +02:00
Mikael Gerdin
83303777f7 8047821: G1 Does not use the save_marks functionality as intended 
Rename save_marks to record_top_and_timestamp and remove som unused but related methods

Reviewed-by: stefank, ehelin
 2014-06-26 10:00:00 +02:00
Mikael Gerdin
5b7c529bb2 8047819: G1 HeapRegionDCTOC does not need to inherit ContiguousSpaceDCTOC 
Reviewed-by: stefank, tschatzl
 2014-06-25 10:55:10 +02:00
Goetz Lindenmaier
8e7c8f1d88 8044775: Improve usage of umbrella header atomic.inline.hpp 
Reviewed-by: stefank, kvn
 2014-06-04 11:56:44 +02:00
Goetz Lindenmaier
fb62773268 8042737: Introduce umbrella header prefetch.inline.hpp 
Reviewed-by: twisti, stefank
 2014-05-08 15:37:17 +02:00
David Chase
305ec3bd3f 8037816: Fix for 8036122 breaks build with Xcode5/clang 
Repaired or selectively disabled offending formats; future-proofed with additional checking

Reviewed-by: kvn, jrose, stefank
 2014-05-09 16:50:54 -04:00
Goetz Lindenmaier
6e6f0720a9 8042195: Introduce umbrella header orderAccess.inline.hpp 
Reviewed-by: dholmes, kvn, stefank, twisti
 2014-04-29 15:17:27 +02:00
Stefan Karlsson
f2de069dc2 8038628: Remove unused Closure::abort() 
Reviewed-by: coleenp, jmasa
 2014-03-28 14:03:11 +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
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
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
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
Thomas Schatzl
6f46da6198 8027756: assert(!hr->isHumongous()) failed: code root in humongous region? 
Change checks for isHumongous() to continuesHumongous() as installing a code root for a humongous object is valid, but not for continuations of humongous objects. Cleaned up asserts.

Reviewed-by: jmasa, tamao
 2013-11-07 15:17:10 +01:00
Jesper Wilhelmsson
0fa3a71c8a 8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking 
7057939: jmap shows MaxNewSize=4GB when Java is using parallel collector

Major cleanup of the collectorpolicy classes

Reviewed-by: tschatzl, jcoomes
 2013-11-01 17:09:38 +01:00
Lois Foltan
7bf953d005 7195622: CheckUnhandledOops has limited usefulness now 
Enable CHECK_UNHANDLED_OOPS in fastdebug builds across all supported platforms.

Reviewed-by: coleenp, hseigel, dholmes, stefank, twisti, ihse, rdurbin
 2013-09-26 10:25:02 -04:00
Thomas Schatzl
962008f22b 8010722: assert: failed: heap size is too big for compressed oops 
Use conservative assumptions of required alignment for the various garbage collector components into account when determining the maximum heap size that supports compressed oops. Using this conservative value avoids several circular dependencies in the calculation.

Reviewed-by: stefank, dholmes
 2013-09-11 16:25:02 +02:00
Bengt Rutisson
6d7626dba4 8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size 
Reviewed-by: tonyp, tschatzl, sjohanss
 2013-08-30 07:31:47 +02:00
John Cuthbertson
f63547bf71 7145569: G1: optimize nmethods scanning 
Add a list of nmethods to the RSet for a region that contain references into the region. Skip scanning the code cache during root scanning and scan the nmethod lists during RSet scanning instead.

Reviewed-by: tschatzl, brutisso, mgerdin, twisti, kvn
 2013-08-15 10:52:18 +02:00
Bengt Rutisson
a1e1caf8ba 8021879: G1: G1HeapRegionSize flag value not updated correctly 
Reviewed-by: tschatzl, jmasa
 2013-08-01 09:35:04 +02:00
Coleen Phillimore
39a1c1d6c2 8016325: JVM hangs verifying system dictionary 
Minimize redundant verifications of Klasses.

Reviewed-by: hseigel, jmasa
 2013-06-24 18:55:46 -04:00
John Cuthbertson
c3d6abc4e1 8015244: G1: Verification after a full GC is incorrectly placed 
In a full GC, move the verification after the GC to after RSet rebuilding. Verify RSet entries during a full GC under control of a flag.

Reviewed-by: tschatzl, brutisso
 2013-06-04 10:04:06 -07:00
Brandon Mitchell
6573cbf346 7016955: G1: remove the is_zeroed parameter from the HeapRegion constructor 
The is_zeroed parameter is no longer used and so can be removed.

Reviewed-by: johnc, jmasa, brutisso
 2012-09-19 08:48:10 -07:00