1 /* 2 * Copyright (c) 2011, 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_G1_G1ALLOCREGION_INLINE_HPP 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP 27 28 #include "gc_implementation/g1/g1AllocRegion.hpp" 29 #include "gc_implementation/g1/heapRegion.inline.hpp" 30 31 inline HeapWord* G1AllocRegion::allocate(HeapRegion* alloc_region, 32 size_t word_size, 33 bool bot_updates) { 34 assert(alloc_region != NULL, err_msg("pre-condition")); 35 36 if (!bot_updates) { 37 return alloc_region->allocate_no_bot_updates(word_size); 38 } else { 39 return alloc_region->allocate(word_size); 40 } 41 } 42 43 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region, 44 size_t word_size, 45 bool bot_updates) { 46 assert(alloc_region != NULL, err_msg("pre-condition")); 47 assert(!alloc_region->is_empty(), err_msg("pre-condition")); 48 49 if (!bot_updates) { 50 return alloc_region->par_allocate_no_bot_updates(word_size); 51 } else { 52 return alloc_region->par_allocate(word_size); 53 } 54 } 55 56 inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size, 57 bool bot_updates) { 58 assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition")); 59 60 HeapRegion* alloc_region = _alloc_region; 61 assert(alloc_region != NULL, ar_ext_msg(this, "not initialized properly")); 62 63 HeapWord* result = par_allocate(alloc_region, word_size, bot_updates); 64 if (result != NULL) { 65 trace("alloc", word_size, result); 66 return result; 67 } 68 trace("alloc failed", word_size); 69 return NULL; 70 } 71 72 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size, 73 bool bot_updates) { 74 // First we have to redo the allocation, assuming we're holding the 75 // appropriate lock, in case another thread changed the region while 76 // we were waiting to get the lock. 77 HeapWord* result = attempt_allocation(word_size, bot_updates); 78 if (result != NULL) { 79 return result; 80 } 81 82 retire(true /* fill_up */); 83 result = new_alloc_region_and_allocate(word_size, false /* force */); 84 if (result != NULL) { 85 trace("alloc locked (second attempt)", word_size, result); 86 return result; 87 } 88 trace("alloc locked failed", word_size); 89 return NULL; 90 } 91 92 inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size, 93 bool bot_updates) { 94 assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition")); 95 assert(_alloc_region != NULL, ar_ext_msg(this, "not initialized properly")); 96 97 trace("forcing alloc"); 98 HeapWord* result = new_alloc_region_and_allocate(word_size, true /* force */); 99 if (result != NULL) { 100 trace("alloc forced", word_size, result); 101 return result; 102 } 103 trace("alloc forced failed", word_size); 104 return NULL; 105 } 106 107 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP