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src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp@7ae4e26cb1e0 (annotated)
src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp
Thu, 12 Oct 2017 21:27:07 +0800
- author
- aoqi
- date
- Thu, 12 Oct 2017 21:27:07 +0800
- changeset 7535
- 7ae4e26cb1e0
- parent 7071
- 4bfc44ba0d19
- parent 6876
- 710a3c8b516e
- child 7994
- 04ff2f6cd0eb
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #include "precompiled.hpp" |
| aoqi@0 | 26 | #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
| aoqi@0 | 27 | #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" |
| aoqi@0 | 28 | #include "gc_implementation/parallelScavenge/psScavenge.hpp" |
| aoqi@0 | 29 | #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" |
| aoqi@0 | 30 | #include "gc_implementation/parallelScavenge/vmPSOperations.hpp" |
| aoqi@0 | 31 | #include "memory/gcLocker.inline.hpp" |
| aoqi@0 | 32 | #include "utilities/dtrace.hpp" |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | // The following methods are used by the parallel scavenge collector |
| aoqi@0 | 35 | VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t size, |
| aoqi@0 | 36 | unsigned int gc_count) : |
| aoqi@0 | 37 | VM_GC_Operation(gc_count, GCCause::_allocation_failure), |
| aoqi@0 | 38 | _size(size), |
| aoqi@0 | 39 | _result(NULL) |
| aoqi@0 | 40 | { |
| aoqi@0 | 41 | } |
| aoqi@0 | 42 | |
| aoqi@0 | 43 | void VM_ParallelGCFailedAllocation::doit() { |
| aoqi@0 | 44 | SvcGCMarker sgcm(SvcGCMarker::MINOR); |
| aoqi@0 | 45 | |
| aoqi@0 | 46 | ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); |
| aoqi@0 | 47 | assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap"); |
| aoqi@0 | 48 | |
| aoqi@0 | 49 | GCCauseSetter gccs(heap, _gc_cause); |
| aoqi@0 | 50 | _result = heap->failed_mem_allocate(_size); |
| aoqi@0 | 51 | |
| aoqi@0 | 52 | if (_result == NULL && GC_locker::is_active_and_needs_gc()) { |
| aoqi@0 | 53 | set_gc_locked(); |
| aoqi@0 | 54 | } |
| aoqi@0 | 55 | } |
| aoqi@0 | 56 | |
| aoqi@0 | 57 | // Only used for System.gc() calls |
| aoqi@0 | 58 | VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(unsigned int gc_count, |
| aoqi@0 | 59 | unsigned int full_gc_count, |
| aoqi@0 | 60 | GCCause::Cause gc_cause) : |
| aoqi@0 | 61 | VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */) |
| aoqi@0 | 62 | { |
| aoqi@0 | 63 | } |
| aoqi@0 | 64 | |
| aoqi@0 | 65 | void VM_ParallelGCSystemGC::doit() { |
| aoqi@0 | 66 | SvcGCMarker sgcm(SvcGCMarker::FULL); |
| aoqi@0 | 67 | |
| aoqi@0 | 68 | ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); |
| aoqi@0 | 69 | assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, |
| aoqi@0 | 70 | "must be a ParallelScavengeHeap"); |
| aoqi@0 | 71 | |
| aoqi@0 | 72 | GCCauseSetter gccs(heap, _gc_cause); |
| tschatzl@7071 | 73 | if (_gc_cause == GCCause::_gc_locker || _gc_cause == GCCause::_wb_young_gc |
| aoqi@0 | 74 | DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) { |
| aoqi@0 | 75 | // If (and only if) the scavenge fails, this will invoke a full gc. |
| aoqi@0 | 76 | heap->invoke_scavenge(); |
| aoqi@0 | 77 | } else { |
| aoqi@0 | 78 | heap->do_full_collection(false); |
| aoqi@0 | 79 | } |
| aoqi@0 | 80 | } |
