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