Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psPromotionLAB.inline.hpp @ 20460:df66e3a3c4c2
8041946: CMM Testing: 8u40 an allocated humongous object at the end of the heap should not prevents shrinking the heap
Summary: New test added
Reviewed-by: jwilhelm, tschatzl
Contributed-by: andrey.x.zakharov@oracle.com
author | jwilhelm |
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date | Thu, 11 Sep 2014 14:21:13 +0200 |
parents | ee019285a52c |
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1 /* |
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP |
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26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP |
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27 |
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28 #include "gc_implementation/parallelScavenge/psPromotionLAB.hpp" |
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29 #include "gc_interface/collectedHeap.inline.hpp" |
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30 |
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31 HeapWord* PSYoungPromotionLAB::allocate(size_t size) { |
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32 // Can't assert this, when young fills, we keep the LAB around, but flushed. |
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33 // assert(_state != flushed, "Sanity"); |
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34 HeapWord* obj = CollectedHeap::align_allocation_or_fail(top(), end(), SurvivorAlignmentInBytes); |
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35 if (obj == NULL) { |
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36 return NULL; |
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37 } |
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38 |
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39 HeapWord* new_top = obj + size; |
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40 // The 'new_top>obj' check is needed to detect overflow of obj+size. |
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41 if (new_top > obj && new_top <= end()) { |
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42 set_top(new_top); |
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43 assert(is_ptr_aligned(obj, SurvivorAlignmentInBytes) && is_object_aligned((intptr_t)new_top), |
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44 "checking alignment"); |
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45 return obj; |
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46 } else { |
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47 set_top(obj); |
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48 return NULL; |
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49 } |
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50 } |
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51 |
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52 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP |