78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "gc/parallel/parallelScavengeHeap.inline.hpp"
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#include "gc/parallel/psScavenge.hpp"
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#include "gc/parallel/psVMOperations.hpp"
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#include "gc/shared/gcLocker.hpp"
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#include "utilities/dtrace.hpp"
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// The following methods are used by the parallel scavenge collector
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VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t word_size,
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uint gc_count) :
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VM_CollectForAllocation(word_size, gc_count, GCCause::_allocation_failure) {
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assert(word_size != 0, "An allocation should always be requested with this operation.");
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}
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void VM_ParallelGCFailedAllocation::doit() {
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SvcGCMarker sgcm(SvcGCMarker::MINOR);
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ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
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GCCauseSetter gccs(heap, _gc_cause);
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_result = heap->failed_mem_allocate(_word_size);
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if (_result == NULL && GCLocker::is_active_and_needs_gc()) {
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set_gc_locked();
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}
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}
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static bool is_cause_full(GCCause::Cause cause) {
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return (cause != GCCause::_gc_locker) && (cause != GCCause::_wb_young_gc)
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DEBUG_ONLY(&& (cause != GCCause::_scavenge_alot));
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}
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// Only used for System.gc() calls
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VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(uint gc_count,
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uint full_gc_count,
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GCCause::Cause gc_cause) :
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VM_GC_Operation(gc_count, gc_cause, full_gc_count, is_cause_full(gc_cause))
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{
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}
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void VM_ParallelGCSystemGC::doit() {
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SvcGCMarker sgcm(SvcGCMarker::FULL);
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ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
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GCCauseSetter gccs(heap, _gc_cause);
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if (!_full) {
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// If (and only if) the scavenge fails, this will invoke a full gc.
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heap->invoke_scavenge();
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} else {
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heap->do_full_collection(false);
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}
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}
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