hg: jdk7/hotspot/hotspot: 13 new changesets

jon.masamitsu at sun.com jon.masamitsu at sun.com
Fri Dec 11 11:01:30 PST 2009

Changeset: 5f932a151fd4
Author:    johnc
Date:      2009-11-06 11:10 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/5f932a151fd4

6895788: G1: SATB and update buffer allocation code allocates too much space
Summary: The type in the NEW_C_HEAP_ARRRY and FREE_C_HEAP_ARRAY calls in the buffer allocation code was changed from void* to char as the size argument had already been mulitipled by the byte size of an object pointer.
Reviewed-by: ysr, tonyp

! src/share/vm/gc_implementation/g1/ptrQueue.cpp

Changeset: 0e2d7ae2bc67
Author:    jmasa
Date:      2009-11-10 11:32 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/0e2d7ae2bc67

6898857: [Regression] -XX:NewRatio with -XX:+UseConcMarkSweepGC causes fatal error
Summary: Use CollectorPolicy information instead of MaxNewSize
Reviewed-by: ysr, jcoomes

! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp

Changeset: 89f1b9ae8991
Author:    ysr
Date:      2009-11-13 11:55 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/89f1b9ae8991

6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
Summary: Added instrumentation and (temporary) assert in non-product mode; clipped the value when found out-of-bounds in product mode. Fix of original issue will follow collection of data from this instrumentation.
Reviewed-by: jcoomes, tonyp

! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
! src/share/vm/utilities/numberSeq.cpp
! src/share/vm/utilities/numberSeq.hpp

Changeset: 23b9a8d315fc
Author:    ysr
Date:      2009-11-19 10:19 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/23b9a8d315fc

6902701: G1: protect debugging code related to 6898948 with a debug flag
Summary: Protected stats dump with a new develop flag; other than for the dump, reconciled product and non-product behaviour in face of the error.
Reviewed-by: tonyp

! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
! src/share/vm/gc_implementation/g1/g1_globals.hpp

Changeset: 3fc996d4edd2
Author:    ysr
Date:      2009-11-19 13:43 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/3fc996d4edd2

6902303: G1: ScavengeALot should cause an incremental, rather than a full, collection
Summary: ScavengeALot now causes an incremental (but possibly partially young, in the G1 sense) collection. Some such collections may be abandoned on account of MMU specs. Band-aided a native leak associated with abandoned pauses, as well as an MMU tracker overflow related to frequent scavenge events in the face of a large MMU denominator interval; the latter is protected by a product flag that defaults to false.
Reviewed-by: tonyp

! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
! src/share/vm/gc_implementation/g1/g1MMUTracker.cpp
! src/share/vm/gc_implementation/g1/g1MMUTracker.hpp
! src/share/vm/gc_implementation/g1/g1_globals.hpp
! src/share/vm/gc_implementation/g1/vm_operations_g1.cpp
! src/share/vm/gc_implementation/g1/vm_operations_g1.hpp
! src/share/vm/memory/sharedHeap.hpp

Changeset: db0d5eba9d20
Author:    tonyp
Date:      2009-11-20 14:47 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/db0d5eba9d20

6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC
Summary: It introduces the necessary memory pools for G1.
Reviewed-by: mchung, ysr

! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/includeDB_gc_g1
+ src/share/vm/services/g1MemoryPool.cpp
+ src/share/vm/services/g1MemoryPool.hpp
! src/share/vm/services/memoryManager.cpp
! src/share/vm/services/memoryManager.hpp
! src/share/vm/services/memoryService.cpp
! src/share/vm/services/memoryService.hpp

Changeset: fa357420e7d2
Author:    johnc
Date:      2009-11-24 15:19 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/fa357420e7d2

6899058: G1: Internal error in ptrQueue.cpp:201 in nightly tests
Summary: Fixes a race on the dirty card queue completed buffer list between worker thread(s) performing a flush of a deferred store barrier (enqueueing a newly completed buffer) and worker thread(s) in the RSet updating code claiming completed buffers. Removed the routine that removes elements from the completed update buffer queue using a CAS.
Reviewed-by: ysr, tonyp

! src/share/vm/gc_implementation/g1/dirtyCardQueue.cpp
! src/share/vm/gc_implementation/g1/dirtyCardQueue.hpp

Changeset: 6aa7255741f3
Author:    ysr
Date:      2009-12-03 15:01 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/6aa7255741f3

6906727: UseCompressedOops: some card-marking fixes related to object arrays
Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17).
Reviewed-by: kvn, coleenp, jmasa

! src/share/vm/classfile/javaClasses.cpp
! src/share/vm/includeDB_core
! src/share/vm/memory/barrierSet.cpp
! src/share/vm/memory/barrierSet.hpp
! src/share/vm/memory/barrierSet.inline.hpp
! src/share/vm/memory/cardTableModRefBS.cpp
! src/share/vm/oops/objArrayKlass.cpp
! src/share/vm/oops/objArrayOop.hpp

Changeset: ed52bcc32739
Author:    tonyp
Date:      2009-12-04 07:44 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/ed52bcc32739

6880903: G1: G1 reports incorrect Runtime.maxMemory()
Summary: G1 reports committed memory instead of reserved memory from the Runtime.maxMemory() method
Reviewed-by: ysr, jmasa

! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
! src/share/vm/services/g1MemoryPool.cpp
! src/share/vm/services/g1MemoryPool.hpp

Changeset: afc30fccf324
Author:    tonyp
Date:      2009-12-04 07:44 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/afc30fccf324

6906565: G1: deal with compilation warning in g1MemoryPool.hpp
Summary: size_t max_size() hides size_t max_size() const.
Reviewed-by: jmasa, ysr

! src/share/vm/services/g1MemoryPool.cpp
! src/share/vm/services/g1MemoryPool.hpp

Changeset: 9118860519b6
Author:    tonyp
Date:      2009-12-07 14:22 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/9118860519b6

6904967: G1: some CollectionUsageThreshold tests fail
Summary: ensure that max and committed are non-zero (currently: at least as large as the region size).
Reviewed-by: iveresov, mchung

! src/share/vm/services/g1MemoryPool.cpp

Changeset: 7bfd295ec074
Author:    ysr
Date:      2009-12-08 15:12 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/7bfd295ec074

6908208: UseCompressedOops: array_size() returns incorrect size for MAX_INT object array following 6906727
Summary: In array_size() cast to an unsigned to avoid overflow of intermediate value.
Reviewed-by: kvn, tonyp, jmasa, jcoomes, coleenp

! src/share/vm/oops/objArrayOop.hpp

Changeset: 84a2da7f454c
Author:    jmasa
Date:      2009-12-11 08:39 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/84a2da7f454c


! src/share/vm/classfile/javaClasses.cpp
! src/share/vm/includeDB_core

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