1 /*
2 * Copyright (c) 2015, 2018, 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_G1ALLOCATOR_INLINE_HPP
26 #define SHARE_VM_GC_G1_G1ALLOCATOR_INLINE_HPP
27
28 #include "gc/g1/g1Allocator.hpp"
29 #include "gc/g1/g1AllocRegion.inline.hpp"
30 #include "gc/shared/plab.inline.hpp"
31
32 inline MutatorAllocRegion* G1Allocator::mutator_alloc_region() {
33 return &_mutator_alloc_region;
34 }
35
36 inline SurvivorGCAllocRegion* G1Allocator::survivor_gc_alloc_region() {
37 return &_survivor_gc_alloc_region;
38 }
39
40 inline OldGCAllocRegion* G1Allocator::old_gc_alloc_region() {
41 return &_old_gc_alloc_region;
42 }
43
44 inline HeapWord* G1Allocator::attempt_allocation(size_t word_size) {
45 return mutator_alloc_region()->attempt_allocation(word_size);
46 }
47
48 inline HeapWord* G1Allocator::attempt_allocation_locked(size_t word_size) {
49 HeapWord* result = mutator_alloc_region()->attempt_allocation_locked(word_size);
50 assert(result != NULL || mutator_alloc_region()->get() == NULL,
51 "Must not have a mutator alloc region if there is no memory, but is " PTR_FORMAT, p2i(mutator_alloc_region()->get()));
52 return result;
53 }
54
55 inline HeapWord* G1Allocator::attempt_allocation_force(size_t word_size) {
56 return mutator_alloc_region()->attempt_allocation_force(word_size);
57 }
58
59 inline PLAB* G1PLABAllocator::alloc_buffer(InCSetState dest) {
60 assert(dest.is_valid(),
61 "Allocation buffer index out-of-bounds: " CSETSTATE_FORMAT, dest.value());
62 assert(_alloc_buffers[dest.value()] != NULL,
63 "Allocation buffer is NULL: " CSETSTATE_FORMAT, dest.value());
64 return _alloc_buffers[dest.value()];
65 }
66
67 inline HeapWord* G1PLABAllocator::plab_allocate(InCSetState dest,
68 size_t word_sz) {
69 PLAB* buffer = alloc_buffer(dest);
70 if (_survivor_alignment_bytes == 0 || !dest.is_young()) {
71 return buffer->allocate(word_sz);
72 } else {
73 return buffer->allocate_aligned(word_sz, _survivor_alignment_bytes);
74 }
75 }
76
77 inline HeapWord* G1PLABAllocator::allocate(InCSetState dest,
78 size_t word_sz,
79 bool* refill_failed) {
80 HeapWord* const obj = plab_allocate(dest, word_sz);
81 if (obj != NULL) {
82 return obj;
83 }
84 return allocate_direct_or_new_plab(dest, word_sz, refill_failed);
85 }
86
87 // Create the maps which is used to identify archive objects.
88 inline void G1ArchiveAllocator::enable_archive_object_check() {
89 if (_archive_check_enabled) {
90 return;
91 }
92
93 _archive_check_enabled = true;
94 size_t length = Universe::heap()->max_capacity();
95 _closed_archive_region_map.initialize((HeapWord*)Universe::heap()->base(),
96 (HeapWord*)Universe::heap()->base() + length,
97 HeapRegion::GrainBytes);
98 _open_archive_region_map.initialize((HeapWord*)Universe::heap()->base(),
99 (HeapWord*)Universe::heap()->base() + length,
100 HeapRegion::GrainBytes);
101 }
102
103 // Set the regions containing the specified address range as archive.
104 inline void G1ArchiveAllocator::set_range_archive(MemRegion range, bool open) {
105 assert(_archive_check_enabled, "archive range check not enabled");
106 if (open) {
107 _open_archive_region_map.set_by_address(range, true);
108 } else {
109 _closed_archive_region_map.set_by_address(range, true);
110 }
111 }
112
113 // Check if an object is in a closed archive region using the _archive_region_map.
114 inline bool G1ArchiveAllocator::in_closed_archive_range(oop object) {
115 // This is the out-of-line part of is_closed_archive_object test, done separately
116 // to avoid additional performance impact when the check is not enabled.
117 return _closed_archive_region_map.get_by_address((HeapWord*)object);
118 }
119
120 inline bool G1ArchiveAllocator::in_open_archive_range(oop object) {
121 return _open_archive_region_map.get_by_address((HeapWord*)object);
122 }
123
124 // Check if archive object checking is enabled, to avoid calling in_open/closed_archive_range
125 // unnecessarily.
126 inline bool G1ArchiveAllocator::archive_check_enabled() {
127 return _archive_check_enabled;
128 }
129
130 inline bool G1ArchiveAllocator::is_closed_archive_object(oop object) {
131 return (archive_check_enabled() && in_closed_archive_range(object));
132 }
133
134 inline bool G1ArchiveAllocator::is_open_archive_object(oop object) {
135 return (archive_check_enabled() && in_open_archive_range(object));
136 }
137
138 inline bool G1ArchiveAllocator::is_archive_object(oop object) {
139 return (archive_check_enabled() && (in_closed_archive_range(object) ||
140 in_open_archive_range(object)));
141 }
142
143 #endif // SHARE_VM_GC_G1_G1ALLOCATOR_HPP