1 /*
2 * Copyright (c) 2011, 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_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 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, size_t word_size, bool bot_updates) {
44 size_t temp;
45 return par_allocate(alloc_region, word_size, word_size, &temp, bot_updates);
46 }
47
48 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region,
49 size_t min_word_size,
50 size_t desired_word_size,
51 size_t* actual_word_size,
52 bool bot_updates) {
53 assert(alloc_region != NULL, err_msg("pre-condition"));
54 assert(!alloc_region->is_empty(), err_msg("pre-condition"));
55
56 if (!bot_updates) {
57 return alloc_region->par_allocate_no_bot_updates(min_word_size, desired_word_size, actual_word_size);
58 } else {
59 return alloc_region->par_allocate(min_word_size, desired_word_size, actual_word_size);
60 }
61 }
62
63 inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size, bool bot_updates) {
64 size_t temp;
65 return attempt_allocation(word_size, word_size, &temp, bot_updates);
66 }
67
68 inline HeapWord* G1AllocRegion::attempt_allocation(size_t min_word_size,
69 size_t desired_word_size,
70 size_t* actual_word_size,
71 bool bot_updates) {
72 assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition"));
73
74 HeapRegion* alloc_region = _alloc_region;
75 assert(alloc_region != NULL, ar_ext_msg(this, "not initialized properly"));
76
77 HeapWord* result = par_allocate(alloc_region, min_word_size, desired_word_size, actual_word_size, bot_updates);
78 if (result != NULL) {
79 trace("alloc", min_word_size, desired_word_size, *actual_word_size, result);
80 return result;
81 }
82 trace("alloc failed", min_word_size, desired_word_size);
83 return NULL;
84 }
85
86 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size, bool bot_updates) {
87 size_t temp;
88 return attempt_allocation_locked(word_size, word_size, &temp, bot_updates);
89 }
90
91 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t min_word_size,
92 size_t desired_word_size,
93 size_t* actual_word_size,
94 bool bot_updates) {
95 // First we have to redo the allocation, assuming we're holding the
96 // appropriate lock, in case another thread changed the region while
97 // we were waiting to get the lock.
98 HeapWord* result = attempt_allocation(min_word_size, desired_word_size, actual_word_size, bot_updates);
99 if (result != NULL) {
100 return result;
101 }
102
103 retire(true /* fill_up */);
104 result = new_alloc_region_and_allocate(desired_word_size, false /* force */);
105 if (result != NULL) {
106 *actual_word_size = desired_word_size;
107 trace("alloc locked (second attempt)", min_word_size, desired_word_size, *actual_word_size, result);
108 return result;
109 }
110 trace("alloc locked failed", min_word_size, desired_word_size);
111 return NULL;
112 }
113
114 inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size,
115 bool bot_updates) {
116 assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition"));
117 assert(_alloc_region != NULL, ar_ext_msg(this, "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