Mercurial > hg > truffle
view src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.hpp @ 1359:23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
Summary: Make sure that two marking cycles do not overlap, i.e., a new one can only start after the concurrent marking thread finishes all its work. In the fix I piggy-back a couple of minor extra fixes: some general code reformatting for consistency (only around the code I modified), the removal of a field (G1CollectorPolicy::_should_initiate_conc_mark) which doesn't seem to be used at all (it's only set but never read), as well as moving the "is GC locker active" test earlier into the G1 pause / Full GC and using a more appropriate method for it.
Reviewed-by: johnc, jmasa, jcoomes, ysr
author | tonyp |
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date | Tue, 06 Apr 2010 10:59:45 -0400 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ class VM_ParallelGCFailedAllocation: public VM_GC_Operation { private: size_t _size; bool _is_tlab; HeapWord* _result; public: VM_ParallelGCFailedAllocation(size_t size, bool is_tlab, unsigned int gc_count); virtual VMOp_Type type() const { return VMOp_ParallelGCFailedAllocation; } virtual void doit(); HeapWord* result() const { return _result; } }; class VM_ParallelGCFailedPermanentAllocation: public VM_GC_Operation { private: size_t _size; HeapWord* _result; public: VM_ParallelGCFailedPermanentAllocation(size_t size, unsigned int gc_count, unsigned int full_gc_count); virtual VMOp_Type type() const { return VMOp_ParallelGCFailedPermanentAllocation; } virtual void doit(); HeapWord* result() const { return _result; } }; class VM_ParallelGCSystemGC: public VM_GC_Operation { public: VM_ParallelGCSystemGC(unsigned int gc_count, unsigned int full_gc_count, GCCause::Cause gc_cause); virtual VMOp_Type type() const { return VMOp_ParallelGCSystemGC; } virtual void doit(); };