1 /* 2 * Copyright (c) 2007, 2015, 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 word_size, 36 uint gc_count) : 37 VM_CollectForAllocation(word_size, gc_count, GCCause::_allocation_failure) { 38 assert(word_size != 0, "An allocation should always be requested with this operation."); 39 } 40 41 void VM_ParallelGCFailedAllocation::doit() { 42 SvcGCMarker sgcm(SvcGCMarker::MINOR); 43 44 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); 45 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap"); 46 47 GCCauseSetter gccs(heap, _gc_cause); 48 _result = heap->failed_mem_allocate(_word_size); 49 50 if (_result == NULL && GC_locker::is_active_and_needs_gc()) { 51 set_gc_locked(); 52 } 53 } 54 55 // Only used for System.gc() calls 56 VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(uint gc_count, 57 uint full_gc_count, 58 GCCause::Cause gc_cause) : 59 VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */) 60 { 61 } 62 63 void VM_ParallelGCSystemGC::doit() { 64 SvcGCMarker sgcm(SvcGCMarker::FULL); 65 66 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); 67 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, 68 "must be a ParallelScavengeHeap"); 69 70 GCCauseSetter gccs(heap, _gc_cause); 71 if (_gc_cause == GCCause::_gc_locker || _gc_cause == GCCause::_wb_young_gc 72 DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) { 73 // If (and only if) the scavenge fails, this will invoke a full gc. 74 heap->invoke_scavenge(); 75 } else { 76 heap->do_full_collection(false); 77 } 78 }