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