Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
| author | tonyp |
|---|---|
| date | Wed, 19 Jan 2011 09:35:17 -0500 |
| parents | 7246a374a9f2 |
| children | c798c277ddd1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" | |
| 27 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" | |
| 28 #include "gc_implementation/parallelScavenge/psScavenge.hpp" | |
| 29 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
| 30 #include "gc_implementation/parallelScavenge/vmPSOperations.hpp" | |
| 31 #include "memory/gcLocker.inline.hpp" | |
| 32 #include "utilities/dtrace.hpp" | |
| 0 | 33 |
| 34 // The following methods are used by the parallel scavenge collector | |
| 35 VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t size, | |
| 36 bool is_tlab, unsigned int gc_count) : | |
| 37 VM_GC_Operation(gc_count), | |
| 38 _size(size), | |
| 39 _is_tlab(is_tlab), | |
| 40 _result(NULL) | |
| 41 { | |
| 42 } | |
| 43 | |
| 44 void VM_ParallelGCFailedAllocation::doit() { | |
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45 SvcGCMarker sgcm(SvcGCMarker::MINOR); |
| 0 | 46 |
| 47 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); | |
| 48 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap"); | |
| 49 | |
| 50 GCCauseSetter gccs(heap, _gc_cause); | |
| 51 _result = heap->failed_mem_allocate(_size, _is_tlab); | |
| 52 | |
| 53 if (_result == NULL && GC_locker::is_active_and_needs_gc()) { | |
| 54 set_gc_locked(); | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 VM_ParallelGCFailedPermanentAllocation::VM_ParallelGCFailedPermanentAllocation(size_t size, | |
| 59 unsigned int gc_count, unsigned int full_gc_count) : | |
| 60 VM_GC_Operation(gc_count, full_gc_count, true /* full */), | |
| 61 _size(size), | |
| 62 _result(NULL) | |
| 63 { | |
| 64 } | |
| 65 | |
| 66 void VM_ParallelGCFailedPermanentAllocation::doit() { | |
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67 SvcGCMarker sgcm(SvcGCMarker::FULL); |
| 0 | 68 |
| 69 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); | |
| 70 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap"); | |
| 71 | |
| 72 GCCauseSetter gccs(heap, _gc_cause); | |
| 73 _result = heap->failed_permanent_mem_allocate(_size); | |
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74 if (_result == NULL && GC_locker::is_active_and_needs_gc()) { |
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75 set_gc_locked(); |
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76 } |
| 0 | 77 } |
| 78 | |
| 79 // Only used for System.gc() calls | |
| 80 VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(unsigned int gc_count, | |
| 81 unsigned int full_gc_count, | |
| 82 GCCause::Cause gc_cause) : | |
| 83 VM_GC_Operation(gc_count, full_gc_count, true /* full */) | |
| 84 { | |
| 85 _gc_cause = gc_cause; | |
| 86 } | |
| 87 | |
| 88 void VM_ParallelGCSystemGC::doit() { | |
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89 SvcGCMarker sgcm(SvcGCMarker::FULL); |
| 0 | 90 |
| 91 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); | |
| 92 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, | |
| 93 "must be a ParallelScavengeHeap"); | |
| 94 | |
| 95 GCCauseSetter gccs(heap, _gc_cause); | |
| 96 if (_gc_cause == GCCause::_gc_locker | |
| 97 DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) { | |
| 98 // If (and only if) the scavenge fails, this will invoke a full gc. | |
| 99 heap->invoke_scavenge(); | |
| 100 } else { | |
| 101 heap->invoke_full_gc(false); | |
| 102 } | |
| 103 } |