| /* |
| * Copyright (c) 2014, 2015, 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_PARALLEL_PSPROMOTIONLAB_INLINE_HPP |
| #define SHARE_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP |
| |
| #include "gc/parallel/psPromotionLAB.hpp" |
| #include "gc/shared/collectedHeap.inline.hpp" |
| #include "utilities/align.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_aligned(obj, SurvivorAlignmentInBytes) && is_object_aligned(new_top), |
| "checking alignment"); |
| return obj; |
| } else { |
| set_top(obj); |
| return NULL; |
| } |
| } |
| |
| #endif // SHARE_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP |