1 /*
2 * Copyright (c) 2015, 2019, 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_GC_G1_G1ALLOCATOR_INLINE_HPP
26 #define SHARE_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 #include "memory/universe.hpp"
32
33 inline MutatorAllocRegion* G1Allocator::mutator_alloc_region() {
34 return &_mutator_alloc_region;
35 }
36
37 inline SurvivorGCAllocRegion* G1Allocator::survivor_gc_alloc_region() {
38 return &_survivor_gc_alloc_region;
39 }
40
41 inline OldGCAllocRegion* G1Allocator::old_gc_alloc_region() {
42 return &_old_gc_alloc_region;
43 }
44
45 inline HeapWord* G1Allocator::attempt_allocation(size_t min_word_size,
46 size_t desired_word_size,
47 size_t* actual_word_size) {
48 HeapWord* result = mutator_alloc_region()->attempt_retained_allocation(min_word_size, desired_word_size, actual_word_size);
49 if (result != NULL) {
50 return result;
51 }
52 return mutator_alloc_region()->attempt_allocation(min_word_size, desired_word_size, actual_word_size);
53 }
54
55 inline HeapWord* G1Allocator::attempt_allocation_locked(size_t word_size) {
56 HeapWord* result = mutator_alloc_region()->attempt_allocation_locked(word_size);
57 assert(result != NULL || mutator_alloc_region()->get() == NULL,
58 "Must not have a mutator alloc region if there is no memory, but is " PTR_FORMAT, p2i(mutator_alloc_region()->get()));
59 return result;
60 }
61
62 inline HeapWord* G1Allocator::attempt_allocation_force(size_t word_size) {
63 return mutator_alloc_region()->attempt_allocation_force(word_size);
64 }
65
66 inline PLAB* G1PLABAllocator::alloc_buffer(G1HeapRegionAttr dest) {
67 assert(dest.is_valid(),
68 "Allocation buffer index out of bounds: %s", dest.get_type_str());
69 assert(_alloc_buffers[dest.type()] != NULL,
70 "Allocation buffer is NULL: %s", dest.get_type_str());
71 return _alloc_buffers[dest.type()];
72 }
73
74 inline HeapWord* G1PLABAllocator::plab_allocate(G1HeapRegionAttr dest,
75 size_t word_sz) {
76 PLAB* buffer = alloc_buffer(dest);
77 if (_survivor_alignment_bytes == 0 || !dest.is_young()) {
78 return buffer->allocate(word_sz);
79 } else {
80 return buffer->allocate_aligned(word_sz, _survivor_alignment_bytes);
81 }
82 }
83
84 inline HeapWord* G1PLABAllocator::allocate(G1HeapRegionAttr dest,
85 size_t word_sz,
86 bool* refill_failed) {
87 HeapWord* const obj = plab_allocate(dest, word_sz);
88 if (obj != NULL) {
89 return obj;
90 }
91 return allocate_direct_or_new_plab(dest, word_sz, refill_failed);
92 }
93
94 // Create the maps which is used to identify archive objects.
95 inline void G1ArchiveAllocator::enable_archive_object_check() {
96 if (_archive_check_enabled) {
97 return;
98 }
99
100 _archive_check_enabled = true;
101 size_t length = G1CollectedHeap::heap()->max_reserved_capacity();
102 _closed_archive_region_map.initialize(G1CollectedHeap::heap()->base(),
103 G1CollectedHeap::heap()->base() + length,
104 HeapRegion::GrainBytes);
105 _open_archive_region_map.initialize(G1CollectedHeap::heap()->base(),
106 G1CollectedHeap::heap()->base() + length,
107 HeapRegion::GrainBytes);
108 }
109
110 // Set the regions containing the specified address range as archive.
111 inline void G1ArchiveAllocator::set_range_archive(MemRegion range, bool open) {
112 assert(_archive_check_enabled, "archive range check not enabled");
113 log_info(gc, cds)("Mark %s archive regions in map: [" PTR_FORMAT ", " PTR_FORMAT "]",
114 open ? "open" : "closed",
115 p2i(range.start()),
116 p2i(range.last()));
117 if (open) {
118 _open_archive_region_map.set_by_address(range, true);
119 } else {
120 _closed_archive_region_map.set_by_address(range, true);
121 }
122 }
123
124 // Clear the archive regions map containing the specified address range.
125 inline void G1ArchiveAllocator::clear_range_archive(MemRegion range, bool open) {
126 assert(_archive_check_enabled, "archive range check not enabled");
127 log_info(gc, cds)("Clear %s archive regions in map: [" PTR_FORMAT ", " PTR_FORMAT "]",
128 open ? "open" : "closed",
129 p2i(range.start()),
130 p2i(range.last()));
131 if (open) {
132 _open_archive_region_map.set_by_address(range, false);
133 } else {
134 _closed_archive_region_map.set_by_address(range, false);
135 }
136 }
137
138 // Check if an object is in a closed archive region using the _archive_region_map.
139 inline bool G1ArchiveAllocator::in_closed_archive_range(oop object) {
140 // This is the out-of-line part of is_closed_archive_object test, done separately
141 // to avoid additional performance impact when the check is not enabled.
142 return _closed_archive_region_map.get_by_address((HeapWord*)object);
143 }
144
145 inline bool G1ArchiveAllocator::in_open_archive_range(oop object) {
146 return _open_archive_region_map.get_by_address((HeapWord*)object);
147 }
148
149 // Check if archive object checking is enabled, to avoid calling in_open/closed_archive_range
150 // unnecessarily.
151 inline bool G1ArchiveAllocator::archive_check_enabled() {
152 return _archive_check_enabled;
153 }
154
155 inline bool G1ArchiveAllocator::is_closed_archive_object(oop object) {
156 return (archive_check_enabled() && in_closed_archive_range(object));
157 }
158
159 inline bool G1ArchiveAllocator::is_open_archive_object(oop object) {
160 return (archive_check_enabled() && in_open_archive_range(object));
161 }
162
163 inline bool G1ArchiveAllocator::is_archived_object(oop object) {
164 return (archive_check_enabled() && (in_closed_archive_range(object) ||
165 in_open_archive_range(object)));
166 }
167
168 #endif // SHARE_GC_G1_G1ALLOCATOR_INLINE_HPP