January 2013 - hotspot-gc-dev

hg: hsx/hotspot-gc/jaxws: Added tag jdk8-b72 for changeset d9707230294d
by john.coomes＠oracle.com 11 Jan '13

11 Jan '13

Changeset: c606f644a5d9 Author: katleman Date: 2013-01-10 09:55 -0800 URL: http://hg.openjdk.java.net/hsx/hotspot-gc/jaxws/rev/c606f644a5d9 Added tag jdk8-b72 for changeset d9707230294d ! .hgtags

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hg: hsx/hotspot-gc/jaxp: Added tag jdk8-b72 for changeset bdf2af722a6b
by john.coomes＠oracle.com 11 Jan '13

11 Jan '13

Changeset: 84946404d1e1 Author: katleman Date: 2013-01-10 09:55 -0800 URL: http://hg.openjdk.java.net/hsx/hotspot-gc/jaxp/rev/84946404d1e1 Added tag jdk8-b72 for changeset bdf2af722a6b ! .hgtags

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hg: hsx/hotspot-gc/corba: Added tag jdk8-b72 for changeset cb40427f4714
by john.coomes＠oracle.com 11 Jan '13

11 Jan '13

Changeset: 191afde59e7b Author: katleman Date: 2013-01-10 09:55 -0800 URL: http://hg.openjdk.java.net/hsx/hotspot-gc/corba/rev/191afde59e7b Added tag jdk8-b72 for changeset cb40427f4714 ! .hgtags

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hg: hsx/hotspot-gc: Added tag jdk8-b72 for changeset c1be681d80a1
by john.coomes＠oracle.com 11 Jan '13

11 Jan '13

Changeset: f03f90a4308d Author: katleman Date: 2013-01-10 09:55 -0800 URL: http://hg.openjdk.java.net/hsx/hotspot-gc/rev/f03f90a4308d Added tag jdk8-b72 for changeset c1be681d80a1 ! .hgtags

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request for review (s): 8004895: NPG: JMapPermCore test failure caused by warnings about missing field
by Jon Masamitsu 10 Jan '13

10 Jan '13

8004895: NPG: JMapPermCore test failure caused by warnings about missing field http://cr.openjdk.java.net/~jmasa/8004895/webrev.00 Fixed some declarations in vmStructs_cms.hpp and added a missing declaration for CompactibleFreeListSpace::_dictionary. Moved the typedef for AFLBinaryTreeDictionary to binaryTreeDictionary.hpp to allow use in some additional declarations.

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hg: hsx/hotspot-gc/hotspot: 8005489: VM hangs during GC with ParallelGC and ParallelGCThreads=0
by bengt.rutisson＠oracle.com 09 Jan '13

09 Jan '13

Changeset: 4c8bf5e55392 Author: brutisso Date: 2013-01-09 09:48 +0100 URL: http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/4c8bf5e55392 8005489: VM hangs during GC with ParallelGC and ParallelGCThreads=0 Summary: Print an error message and exit the VM if UseParallalGC is combined with ParllelGCThreads==0. Also reviewed by vitalyd(a)gmail.com. Reviewed-by: stefank, ehelin ! src/share/vm/runtime/arguments.cpp

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Request for review (S): 8005489: VM hangs during GC with ParallelGC and ParallelGCThreads=0
by Bengt Rutisson 09 Jan '13

09 Jan '13

Hi all, Could I have a couple of reviews for this change. The parallel collector needs at least one GC worker thread to function properly . Setting ParallelGCThreads=0 on the command line causes the parallel collector to hang in product builds and assert in debug builds. This has been the case back to JDK6u14. The fix will instead print an error message and exit the VM if ParallelGCThreads=0 is used with UseParallelGC. This is similar to what we recently did for the ParNew collector. http://cr.openjdk.java.net/~brutisso/8005489/webrev.00/ Thanks, Bengt

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hg: hsx/hotspot-gc/hotspot: 2 new changesets
by jon.masamitsu＠oracle.com 05 Jan '13

05 Jan '13

Changeset: 6e9174173e00 Author: jmasa Date: 2013-01-04 17:04 -0800 URL: http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/6e9174173e00 8000325: Change default for CMSClassUnloadingEnabled to true Reviewed-by: stefank, ysr ! src/share/vm/runtime/globals.hpp Changeset: 0b54ffe4c2d3 Author: jmasa Date: 2013-01-04 17:04 -0800 URL: http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/0b54ffe4c2d3 8005672: Clean up some changes to GC logging with GCCause's Reviewed-by: johnc, ysr ! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp ! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp ! src/share/vm/gc_implementation/parallelScavenge/psYoungGen.cpp ! src/share/vm/gc_interface/gcCause.hpp

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Request for review (xs) - 8000325
by Jon Masamitsu 05 Jan '13

05 Jan '13

This is a change in the default class unloading policy for CMS. 8000325: Change default for CMSClassUnloadingEnabled to true http://cr.openjdk.java.net/~jmasa/8000325/webrev.00/ With perm gen removal it becomes important for CMS to unload classes to avoid excessive consumption of native memory for metadata.

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request for review (s) - 8005672: Clean up some changes to GC logging with GCCause's
by Jon Masamitsu 05 Jan '13

05 Jan '13

This is a clean up of some unintended white space changes in the GC logging output. http://cr.openjdk.java.net/~jmasa/8005672/webrev.00/ Thanks. Jon

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