1 /* 2 * Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 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" 33 34 // The following methods are used by the parallel scavenge collector 35 VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t size, 36 unsigned int gc_count) : 37 VM_GC_Operation(gc_count, GCCause::_allocation_failure), 38 _size(size), 39 _result(NULL) 40 { 41 } 42 43 void VM_ParallelGCFailedAllocation::doit() { 44 SvcGCMarker sgcm(SvcGCMarker::MINOR); 45 46 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); 47 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap"); 48 49 GCCauseSetter gccs(heap, _gc_cause); 50 _result = heap->failed_mem_allocate(_size); 51 52 if (_result == NULL && GC_locker::is_active_and_needs_gc()) { 53 set_gc_locked(); 54 } 55 } 56 57 // Only used for System.gc() calls 58 VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(unsigned int gc_count, 59 unsigned int full_gc_count, 60 GCCause::Cause gc_cause) : 61 VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */) 62 { 63 } 64 65 void VM_ParallelGCSystemGC::doit() { 66 SvcGCMarker sgcm(SvcGCMarker::FULL); 67 68 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); 69 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, 70 "must be a ParallelScavengeHeap"); 71 72 GCCauseSetter gccs(heap, _gc_cause); 73 if (_gc_cause == GCCause::_gc_locker || _gc_cause == GCCause::_wb_young_gc 74 DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) { 75 // If (and only if) the scavenge fails, this will invoke a full gc. 76 heap->invoke_scavenge(); 77 } else { 78 heap->do_full_collection(false); 79 } 80 }