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src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp@da91efe96a93
src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp
Sat, 01 Sep 2012 13:25:18 -0400
- author
- coleenp
- date
- Sat, 01 Sep 2012 13:25:18 -0400
- changeset 4037
- da91efe96a93
- parent 2971
- c9ca3f51cf41
- child 6876
- 710a3c8b516e
- child 7071
- 4bfc44ba0d19
- permissions
- -rw-r--r--
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
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 */
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"
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 }
43 void VM_ParallelGCFailedAllocation::doit() {
44 SvcGCMarker sgcm(SvcGCMarker::MINOR);
46 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
47 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
49 GCCauseSetter gccs(heap, _gc_cause);
50 _result = heap->failed_mem_allocate(_size);
52 if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
53 set_gc_locked();
54 }
55 }
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 }
65 void VM_ParallelGCSystemGC::doit() {
66 SvcGCMarker sgcm(SvcGCMarker::FULL);
68 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
69 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap,
70 "must be a ParallelScavengeHeap");
72 GCCauseSetter gccs(heap, _gc_cause);
73 if (_gc_cause == GCCause::_gc_locker
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 }
