1/*
2 * Copyright (c) 2007, 2018, 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/parallel/parallelScavengeHeap.inline.hpp"
27#include "gc/parallel/psScavenge.hpp"
28#include "gc/parallel/psVMOperations.hpp"
29#include "gc/shared/gcLocker.hpp"
30#include "utilities/dtrace.hpp"
31
32// The following methods are used by the parallel scavenge collector
33VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t word_size,
34 uint gc_count) :
35 VM_CollectForAllocation(word_size, gc_count, GCCause::_allocation_failure) {
36 assert(word_size != 0, "An allocation should always be requested with this operation.");
37}
38
39void VM_ParallelGCFailedAllocation::doit() {
40 SvcGCMarker sgcm(SvcGCMarker::MINOR);
41
42 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
43
44 GCCauseSetter gccs(heap, _gc_cause);
45 _result = heap->failed_mem_allocate(_word_size);
46
47 if (_result == NULL && GCLocker::is_active_and_needs_gc()) {
48 set_gc_locked();
49 }
50}
51
52// Only used for System.gc() calls
53VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(uint gc_count,
54 uint full_gc_count,
55 GCCause::Cause gc_cause) :
56 VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */)
57{
58}
59
60void VM_ParallelGCSystemGC::doit() {
61 SvcGCMarker sgcm(SvcGCMarker::FULL);
62
63 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
64
65 GCCauseSetter gccs(heap, _gc_cause);
66 if (_gc_cause == GCCause::_gc_locker || _gc_cause == GCCause::_wb_young_gc
67 DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) {
68 // If (and only if) the scavenge fails, this will invoke a full gc.
69 heap->invoke_scavenge();
70 } else {
71 heap->do_full_collection(false);
72 }
73}
74