hg: jdk7/hotspot/hotspot: 5 new changesets

tony.printezis at oracle.com tony.printezis at oracle.com
Fri Feb 4 11:43:52 PST 2011

Changeset: b7a938236e43
Author:    tonyp
Date:      2011-01-31 16:28 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/b7a938236e43

7014679: G1: deadlock during concurrent cleanup
Summary: There's a potential deadlock between the concurrent cleanup thread and the GC workers that are trying to allocate and waiting for more free regions to be made available.
Reviewed-by: iveresov, jcoomes

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

Changeset: e49cfa28f585
Author:    ysr
Date:      2011-02-01 10:02 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/e49cfa28f585

6999988: CMS: Increased fragmentation leading to promotion failure after CR#6631166 got implemented
Summary: Fix calculation of _desired, in free list statistics, which was missing an intended set of parentheses.
Reviewed-by: poonam, jmasa

! src/share/vm/gc_implementation/shared/allocationStats.hpp

Changeset: 986b2844f7a2
Author:    brutisso
Date:      2011-02-01 14:05 +0100
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/986b2844f7a2

6789220: CMS: intermittent timeout running nsk/regression/b4796926
Summary: The reference handler java thread and the GC could dead lock
Reviewed-by: never, johnc, jcoomes

! src/share/vm/compiler/compileBroker.cpp

Changeset: c33825b68624
Author:    johnc
Date:      2011-02-02 10:41 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/c33825b68624

6923430: G1: assert(res != 0,"This should have worked.")
7007446: G1: expand the heap with a single step, not one region at a time
Summary: Changed G1CollectedHeap::expand() to expand the committed space by calling VirtualSpace::expand_by() once rather than for every region in the expansion amount. This allows the success or failure of the expansion to be determined before creating any heap regions. Introduced a develop flag G1ExitOnExpansionFailure (false by default) that, when true, will exit the VM if the expansion of the committed space fails. Finally G1CollectedHeap::expand() returns a status back to it's caller so that the caller knows whether to attempt the allocation.
Reviewed-by: brutisso, tonyp

! src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
! src/share/vm/gc_implementation/g1/g1RemSet.cpp
! src/share/vm/gc_implementation/g1/g1_globals.hpp

Changeset: 176d0be30214
Author:    phh
Date:      2011-02-03 16:06 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/176d0be30214

7016998: gcutil class LinearLeastSquareFit doesn't initialize some of its fields
Summary: Initialize _sum_x_squared, _intercept and _slope in constructor.
Reviewed-by: bobv, coleenp

! src/share/vm/gc_implementation/shared/gcUtil.cpp

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