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 31HeapWord* 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 53