1 /* 2 * Copyright (c) 2011, 2017, 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_G1_G1ALLOCREGION_INLINE_HPP 26 #define SHARE_VM_GC_G1_G1ALLOCREGION_INLINE_HPP 27 28 #include "gc/g1/g1AllocRegion.hpp" 29 #include "gc/g1/heapRegion.inline.hpp" 30 31 #define assert_alloc_region(p, message) \ 32 do { \ 33 assert((p), "[%s] %s c: %u b: %s r: " PTR_FORMAT " u: " SIZE_FORMAT, \ 34 _name, (message), _count, BOOL_TO_STR(_bot_updates), \ 35 p2i(_alloc_region), _used_bytes_before); \ 36 } while (0) 37 38 39 inline HeapWord* G1AllocRegion::allocate(HeapRegion* alloc_region, 40 size_t word_size) { 41 assert(alloc_region != NULL, "pre-condition"); 42 43 if (!_bot_updates) { 44 return alloc_region->allocate_no_bot_updates(word_size); 45 } else { 46 return alloc_region->allocate(word_size); 47 } 48 } 49 50 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region, size_t word_size) { 51 size_t temp; 52 return par_allocate(alloc_region, word_size, word_size, &temp); 53 } 54 55 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region, 56 size_t min_word_size, 57 size_t desired_word_size, 58 size_t* actual_word_size) { 59 assert(alloc_region != NULL, "pre-condition"); 60 assert(!alloc_region->is_empty(), "pre-condition"); 61 62 if (!_bot_updates) { 63 return alloc_region->par_allocate_no_bot_updates(min_word_size, desired_word_size, actual_word_size); 64 } else { 65 return alloc_region->par_allocate(min_word_size, desired_word_size, actual_word_size); 66 } 67 } 68 69 inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size) { 70 size_t temp; 71 return attempt_allocation(word_size, word_size, &temp); 72 } 73 74 inline HeapWord* G1AllocRegion::attempt_allocation(size_t min_word_size, 75 size_t desired_word_size, 76 size_t* actual_word_size) { 77 HeapRegion* alloc_region = _alloc_region; 78 assert_alloc_region(alloc_region != NULL, "not initialized properly"); 79 80 HeapWord* result = par_allocate(alloc_region, min_word_size, desired_word_size, actual_word_size); 81 if (result != NULL) { 82 trace("alloc", min_word_size, desired_word_size, *actual_word_size, result); 83 return result; 84 } 85 trace("alloc failed", min_word_size, desired_word_size); 86 return NULL; 87 } 88 89 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size) { 90 size_t temp; 91 return attempt_allocation_locked(word_size, word_size, &temp); 92 } 93 94 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t min_word_size, 95 size_t desired_word_size, 96 size_t* actual_word_size) { 97 // First we have to redo the allocation, assuming we're holding the 98 // appropriate lock, in case another thread changed the region while 99 // we were waiting to get the lock. 100 HeapWord* result = attempt_allocation(min_word_size, desired_word_size, actual_word_size); 101 if (result != NULL) { 102 return result; 103 } 104 105 retire(true /* fill_up */); 106 result = new_alloc_region_and_allocate(desired_word_size, false /* force */); 107 if (result != NULL) { 108 *actual_word_size = desired_word_size; 109 trace("alloc locked (second attempt)", min_word_size, desired_word_size, *actual_word_size, result); 110 return result; 111 } 112 trace("alloc locked failed", min_word_size, desired_word_size); 113 return NULL; 114 } 115 116 inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size) { 117 assert_alloc_region(_alloc_region != NULL, "not initialized properly"); 118 119 trace("forcing alloc", word_size, word_size); 120 HeapWord* result = new_alloc_region_and_allocate(word_size, true /* force */); 121 if (result != NULL) { 122 trace("alloc forced", word_size, word_size, word_size, result); 123 return result; 124 } 125 trace("alloc forced failed", word_size, word_size); 126 return NULL; 127 } 128 129 #endif // SHARE_VM_GC_G1_G1ALLOCREGION_INLINE_HPP