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 void G1AllocRegion::reset_alloc_region() {
40 _alloc_region = _dummy_region;
41 }
42
43 inline HeapWord* G1AllocRegion::allocate(HeapRegion* alloc_region,
44 size_t word_size) {
45 assert(alloc_region != NULL, "pre-condition");
46
47 if (!_bot_updates) {
48 return alloc_region->allocate_no_bot_updates(word_size);
49 } else {
50 return alloc_region->allocate(word_size);
51 }
52 }
53
54 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region, size_t word_size) {
55 size_t temp;
56 return par_allocate(alloc_region, word_size, word_size, &temp);
57 }
58
59 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region,
60 size_t min_word_size,
61 size_t desired_word_size,
62 size_t* actual_word_size) {
63 assert(alloc_region != NULL, "pre-condition");
64 assert(!alloc_region->is_empty(), "pre-condition");
65
66 if (!_bot_updates) {
67 return alloc_region->par_allocate_no_bot_updates(min_word_size, desired_word_size, actual_word_size);
68 } else {
69 return alloc_region->par_allocate(min_word_size, desired_word_size, actual_word_size);
70 }
71 }
72
73 inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size) {
74 size_t temp;
75 return attempt_allocation(word_size, word_size, &temp);
76 }
77
78 inline HeapWord* G1AllocRegion::attempt_allocation(size_t min_word_size,
79 size_t desired_word_size,
80 size_t* actual_word_size) {
81 HeapRegion* alloc_region = _alloc_region;
82 assert_alloc_region(alloc_region != NULL, "not initialized properly");
83
84 HeapWord* result = par_allocate(alloc_region, min_word_size, desired_word_size, actual_word_size);
85 if (result != NULL) {
86 trace("alloc", min_word_size, desired_word_size, *actual_word_size, result);
87 return result;
88 }
89 trace("alloc failed", min_word_size, desired_word_size);
90 return NULL;
91 }
92
93 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size) {
94 size_t temp;
95 return attempt_allocation_locked(word_size, word_size, &temp);
96 }
97
98 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t min_word_size,
99 size_t desired_word_size,
100 size_t* actual_word_size) {
101 // First we have to redo the allocation, assuming we're holding the
102 // appropriate lock, in case another thread changed the region while
103 // we were waiting to get the lock.
104 HeapWord* result = attempt_allocation(min_word_size, desired_word_size, actual_word_size);
105 if (result != NULL) {
106 return result;
107 }
108
109 retire(true /* fill_up */);
110 result = new_alloc_region_and_allocate(desired_word_size, false /* force */);
111 if (result != NULL) {
112 *actual_word_size = desired_word_size;
113 trace("alloc locked (second attempt)", min_word_size, desired_word_size, *actual_word_size, result);
114 return result;
115 }
116 trace("alloc locked failed", min_word_size, desired_word_size);
117 return NULL;
118 }
119
120 inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size) {
121 assert_alloc_region(_alloc_region != NULL, "not initialized properly");
122
123 trace("forcing alloc", word_size, word_size);
124 HeapWord* result = new_alloc_region_and_allocate(word_size, true /* force */);
125 if (result != NULL) {
126 trace("alloc forced", word_size, word_size, word_size, result);
127 return result;
128 }
129 trace("alloc forced failed", word_size, word_size);
130 return NULL;
131 }
132
133 inline HeapWord* MutatorAllocRegion::attempt_retained_allocation(size_t min_word_size,
134 size_t desired_word_size,
135 size_t* actual_word_size) {
136 if (_retained_alloc_region != NULL) {
137 HeapWord* result = par_allocate(_retained_alloc_region, min_word_size, desired_word_size, actual_word_size);
138 if (result != NULL) {
139 trace("alloc retained", min_word_size, desired_word_size, *actual_word_size, result);
140 return result;
141 }
142 }
143 return NULL;
144 }
145
146 #endif // SHARE_VM_GC_G1_G1ALLOCREGION_INLINE_HPP