1 /*
2 * Copyright (c) 2011, 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_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP
27
28 #include "gc_implementation/g1/g1AllocRegion.hpp"
29 #include "gc_implementation/g1/heapRegion.inline.hpp"
30
allocate(HeapRegion * alloc_region,size_t word_size,bool bot_updates)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
par_allocate(HeapRegion * alloc_region,size_t word_size,bool bot_updates)43 inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region,
44 size_t word_size,
45 bool bot_updates) {
46 assert(alloc_region != NULL, err_msg("pre-condition"));
47 assert(!alloc_region->is_empty(), err_msg("pre-condition"));
48
49 if (!bot_updates) {
50 return alloc_region->par_allocate_no_bot_updates(word_size);
51 } else {
52 return alloc_region->par_allocate(word_size);
53 }
54 }
55
attempt_allocation(size_t word_size,bool bot_updates)56 inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size,
57 bool bot_updates) {
58 assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition"));
59
60 HeapRegion* alloc_region = _alloc_region;
61 assert(alloc_region != NULL, ar_ext_msg(this, "not initialized properly"));
62
63 HeapWord* result = par_allocate(alloc_region, word_size, bot_updates);
64 if (result != NULL) {
65 trace("alloc", word_size, result);
66 return result;
67 }
68 trace("alloc failed", word_size);
69 return NULL;
70 }
71
attempt_allocation_locked(size_t word_size,bool bot_updates)72 inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size,
73 bool bot_updates) {
74 // First we have to tedo the allocation, assuming we're holding the
75 // appropriate lock, in case another thread changed the region while
76 // we were waiting to get the lock.
77 HeapWord* result = attempt_allocation(word_size, bot_updates);
78 if (result != NULL) {
79 return result;
80 }
81
82 retire(true /* fill_up */);
83 result = new_alloc_region_and_allocate(word_size, false /* force */);
84 if (result != NULL) {
85 trace("alloc locked (second attempt)", word_size, result);
86 return result;
87 }
88 trace("alloc locked failed", word_size);
89 return NULL;
90 }
91
attempt_allocation_force(size_t word_size,bool bot_updates)92 inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size,
93 bool bot_updates) {
94 assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition"));
95 assert(_alloc_region != NULL, ar_ext_msg(this, "not initialized properly"));
96
97 trace("forcing alloc");
98 HeapWord* result = new_alloc_region_and_allocate(word_size, true /* force */);
99 if (result != NULL) {
100 trace("alloc forced", word_size, result);
101 return result;
102 }
103 trace("alloc forced failed", word_size);
104 return NULL;
105 }
106
107 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP
108