Mercurial > hg > graal-jvmci-8

annotate src/share/vm/gc_implementation/parallelScavenge/psPromotionLAB.inline.hpp @ 24234:ea6f94ab283b default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added tag jvmci-0.36 for changeset 8128b98d4736
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Mon, 18 Sep 2017 18:49:45 +0200
parents ee019285a52c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
20317
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
1 /*
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
4 *
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
7 * published by the Free Software Foundation.
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
8 *
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
13 * accompanied this code).
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
14 *
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
18 *
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
21 * questions.
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
22 *
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
23 */
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
24
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
27
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
28 #include "gc_implementation/parallelScavenge/psPromotionLAB.hpp"
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
29 #include "gc_interface/collectedHeap.inline.hpp"
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
30
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
31 HeapWord* PSYoungPromotionLAB::allocate(size_t size) {
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
32 // Can't assert this, when young fills, we keep the LAB around, but flushed.
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
33 // assert(_state != flushed, "Sanity");
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
34 HeapWord* obj = CollectedHeap::align_allocation_or_fail(top(), end(), SurvivorAlignmentInBytes);
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
35 if (obj == NULL) {
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
36 return NULL;
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
37 }
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
38
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
39 HeapWord* new_top = obj + size;
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
40 // The 'new_top>obj' check is needed to detect overflow of obj+size.
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
41 if (new_top > obj && new_top <= end()) {
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
42 set_top(new_top);
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
43 assert(is_ptr_aligned(obj, SurvivorAlignmentInBytes) && is_object_aligned((intptr_t)new_top),
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
44 "checking alignment");
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
45 return obj;
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
46 } else {
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
47 set_top(obj);
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
48 return NULL;
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
49 }
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
50 }
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
51
ee019285a52c 8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
diff changeset
52 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP