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7134655: Crash in reference processing when doing single-threaded remarking

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Temporarily disabled multi-threaded reference discovery when entering a single-threaded remark phase.

Reviewed-by: brutisso, tonyp, jmasa, jcoomes
This commit is contained in:
Stefan Karlsson 2012-01-27 14:14:50 +01:00
parent 179d6df8c0
commit 4ad03aebbb
1 changed files with 4 additions and 1 deletions
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5
hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* *
* This code is free software; you can redistribute it and/or modify it * This code is free software; you can redistribute it and/or modify it
@ -5594,6 +5594,7 @@ void CMSCollector::do_remark_parallel() {
GenCollectedHeap::StrongRootsScope srs(gch); GenCollectedHeap::StrongRootsScope srs(gch);
workers->run_task(&tsk); workers->run_task(&tsk);
} else { } else {
ReferenceProcessorMTDiscoveryMutator mt(ref_processor(), false);
GenCollectedHeap::StrongRootsScope srs(gch); GenCollectedHeap::StrongRootsScope srs(gch);
tsk.work(0); tsk.work(0);
} }
@ -5608,6 +5609,8 @@ void CMSCollector::do_remark_non_parallel() {
ResourceMark rm; ResourceMark rm;
HandleMark hm; HandleMark hm;
GenCollectedHeap* gch = GenCollectedHeap::heap(); GenCollectedHeap* gch = GenCollectedHeap::heap();
ReferenceProcessorMTDiscoveryMutator mt(ref_processor(), false);
MarkRefsIntoAndScanClosure MarkRefsIntoAndScanClosure
mrias_cl(_span, ref_processor(), &_markBitMap, &_modUnionTable, mrias_cl(_span, ref_processor(), &_markBitMap, &_modUnionTable,
&_markStack, &_revisitStack, this, &_markStack, &_revisitStack, this,