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 #define G1_ALLOC_REGION_ASSERT(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 bool bot_updates) {
42 assert(alloc_region != NULL, "pre-condition");
43
44 if (!bot_updates) {
45 return alloc_region->allocate_no_bot_updates(word_size);
46 } else {
47 return alloc_region->allocate(word_size);
48 }
49 }
50
51 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region, size_t word_size, bool bot_updates) {
52 size_t temp;
53 return par_allocate(alloc_region, word_size, word_size, &temp, bot_updates);
54 }
55
56 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region,
57 size_t min_word_size,
58 size_t desired_word_size,
59 size_t* actual_word_size,
60 bool bot_updates) {
61 assert(alloc_region != NULL, "pre-condition");
62 assert(!alloc_region->is_empty(), "pre-condition");
63
64 if (!bot_updates) {
65 return alloc_region->par_allocate_no_bot_updates(min_word_size, desired_word_size, actual_word_size);
66 } else {
67 return alloc_region->par_allocate(min_word_size, desired_word_size, actual_word_size);
68 }
69 }
70
71 inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size, bool bot_updates) {
72 size_t temp;
73 return attempt_allocation(word_size, word_size, &temp, bot_updates);
74 }
75
76 inline HeapWord* G1AllocRegion::attempt_allocation(size_t min_word_size,
77 size_t desired_word_size,
78 size_t* actual_word_size,
79 bool bot_updates) {
80 G1_ALLOC_REGION_ASSERT(bot_updates == _bot_updates, "pre-condition");
81
82 HeapRegion* alloc_region = _alloc_region;
83 G1_ALLOC_REGION_ASSERT(alloc_region != NULL, "not initialized properly");
84
85 HeapWord* result = par_allocate(alloc_region, min_word_size, desired_word_size, actual_word_size, bot_updates);
86 if (result != NULL) {
87 trace("alloc", min_word_size, desired_word_size, *actual_word_size, result);
88 return result;
89 }
90 trace("alloc failed", min_word_size, desired_word_size);
91 return NULL;
92 }
93
94 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size, bool bot_updates) {
95 size_t temp;
96 return attempt_allocation_locked(word_size, word_size, &temp, bot_updates);
97 }
98
99 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t min_word_size,
100 size_t desired_word_size,
101 size_t* actual_word_size,
102 bool bot_updates) {
103 // First we have to redo the allocation, assuming we're holding the
104 // appropriate lock, in case another thread changed the region while
105 // we were waiting to get the lock.
106 HeapWord* result = attempt_allocation(min_word_size, desired_word_size, actual_word_size, bot_updates);
107 if (result != NULL) {
108 return result;
109 }
110
111 retire(true /* fill_up */);
112 result = new_alloc_region_and_allocate(desired_word_size, false /* force */);
113 if (result != NULL) {
114 *actual_word_size = desired_word_size;
115 trace("alloc locked (second attempt)", min_word_size, desired_word_size, *actual_word_size, result);
116 return result;
117 }
118 trace("alloc locked failed", min_word_size, desired_word_size);
119 return NULL;
120 }
121
122 inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size,
123 bool bot_updates) {
124 G1_ALLOC_REGION_ASSERT(bot_updates == _bot_updates, "pre-condition");
125 G1_ALLOC_REGION_ASSERT(_alloc_region != NULL, "not initialized properly");
126
127 trace("forcing alloc", word_size, word_size);
128 HeapWord* result = new_alloc_region_and_allocate(word_size, true /* force */);
129 if (result != NULL) {
130 trace("alloc forced", word_size, word_size, word_size, result);
131 return result;
132 }
133 trace("alloc forced failed", word_size, word_size);
134 return NULL;
135 }
136
137 #endif // SHARE_VM_GC_G1_G1ALLOCREGION_INLINE_HPP