Mercurial > hg > truffle
view src/share/vm/gc_implementation/parallelScavenge/psPromotionLAB.inline.hpp @ 21738:28943e5044b5
Merge
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Thu, 04 Jun 2015 19:49:45 -0700 |
parents | ee019285a52c |
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/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP #include "gc_implementation/parallelScavenge/psPromotionLAB.hpp" #include "gc_interface/collectedHeap.inline.hpp" HeapWord* PSYoungPromotionLAB::allocate(size_t size) { // Can't assert this, when young fills, we keep the LAB around, but flushed. // assert(_state != flushed, "Sanity"); HeapWord* obj = CollectedHeap::align_allocation_or_fail(top(), end(), SurvivorAlignmentInBytes); if (obj == NULL) { return NULL; } HeapWord* new_top = obj + size; // The 'new_top>obj' check is needed to detect overflow of obj+size. if (new_top > obj && new_top <= end()) { set_top(new_top); assert(is_ptr_aligned(obj, SurvivorAlignmentInBytes) && is_object_aligned((intptr_t)new_top), "checking alignment"); return obj; } else { set_top(obj); return NULL; } } #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONLAB_INLINE_HPP