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.
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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
33inline MutatorAllocRegion* G1Allocator::mutator_alloc_region() {
34 return &_mutator_alloc_region;
35}
36
37inline SurvivorGCAllocRegion* G1Allocator::survivor_gc_alloc_region() {
38 return &_survivor_gc_alloc_region;
39}
40
41inline OldGCAllocRegion* G1Allocator::old_gc_alloc_region() {
42 return &_old_gc_alloc_region;
43}
44
45inline 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
55inline 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
62inline HeapWord* G1Allocator::attempt_allocation_force(size_t word_size) {
63 return mutator_alloc_region()->attempt_allocation_force(word_size);
64}
65
66inline 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
74inline 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
84inline 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.
95inline 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((HeapWord*)Universe::heap()->base(),
103 (HeapWord*)Universe::heap()->base() + length,
104 HeapRegion::GrainBytes);
105 _open_archive_region_map.initialize((HeapWord*)Universe::heap()->base(),
106 (HeapWord*)Universe::heap()->base() + length,
107 HeapRegion::GrainBytes);
108}
109
110// Set the regions containing the specified address range as archive.
111inline 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.
125inline 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.
139inline 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
145inline 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.
151inline bool G1ArchiveAllocator::archive_check_enabled() {
152 return _archive_check_enabled;
153}
154
155inline bool G1ArchiveAllocator::is_closed_archive_object(oop object) {
156 return (archive_check_enabled() && in_closed_archive_range(object));
157}
158
159inline bool G1ArchiveAllocator::is_open_archive_object(oop object) {
160 return (archive_check_enabled() && in_open_archive_range(object));
161}
162
163inline 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
169