1 /*
2 * Copyright (c) 2014, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP
27
28 #include "gc_implementation/parallelScavenge/psPromotionLAB.hpp"
29 #include "gc_interface/collectedHeap.inline.hpp"
30
31 HeapWord* PSYoungPromotionLAB::allocate(size_t size) {
32 // Can't assert this, when young fills, we keep the LAB around, but flushed.
33 // assert(_state != flushed, "Sanity");
34 HeapWord* obj = CollectedHeap::align_allocation_or_fail(top(), end(), SurvivorAlignmentInBytes);
35 if (obj == NULL) {
36 return NULL;
37 }
38
39 HeapWord* new_top = obj + size;
40 // The 'new_top>obj' check is needed to detect overflow of obj+size.
41 if (new_top > obj && new_top <= end()) {
42 set_top(new_top);
43 assert(is_ptr_aligned(obj, SurvivorAlignmentInBytes) && is_object_aligned((intptr_t)new_top),
44 "checking alignment");
45 return obj;
46 } else {
47 set_top(obj);
48 return NULL;
49 }
50 }
51
52 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP
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1 /*
2 * Copyright (c) 2014, 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 #ifndef SHARE_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP
26 #define SHARE_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP
27
28 #include "gc/parallel/psPromotionLAB.hpp"
29 #include "gc/shared/collectedHeap.inline.hpp"
30
31 HeapWord* PSYoungPromotionLAB::allocate(size_t size) {
32 // Can't assert this, when young fills, we keep the LAB around, but flushed.
33 // assert(_state != flushed, "Sanity");
34 HeapWord* obj = CollectedHeap::align_allocation_or_fail(top(), end(), SurvivorAlignmentInBytes);
35 if (obj == NULL) {
36 return NULL;
37 }
38
39 HeapWord* new_top = obj + size;
40 // The 'new_top>obj' check is needed to detect overflow of obj+size.
41 if (new_top > obj && new_top <= end()) {
42 set_top(new_top);
43 assert(is_ptr_aligned(obj, SurvivorAlignmentInBytes) && is_object_aligned((intptr_t)new_top),
44 "checking alignment");
45 return obj;
46 } else {
47 set_top(obj);
48 return NULL;
49 }
50 }
51
52 #endif // SHARE_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP
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