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(uint node_index) {
34 assert(_g1h->mem_node_mgr()->is_valid_node_index(node_index), "Invariant, index %u", node_index);
35 return &_mutator_alloc_region[node_index];
36 }
37
38 inline SurvivorGCAllocRegion* G1Allocator::survivor_gc_alloc_region() {
39 return &_survivor_gc_alloc_region;
40 }
41
42 inline OldGCAllocRegion* G1Allocator::old_gc_alloc_region() {
43 return &_old_gc_alloc_region;
44 }
45
46 inline HeapWord* G1Allocator::attempt_allocation(size_t min_word_size,
47 size_t desired_word_size,
48 size_t* actual_word_size) {
49 uint node_index = _g1h->mem_node_mgr()->index_of_current_thread();
50 HeapWord* result = mutator_alloc_region(node_index)->attempt_retained_allocation(min_word_size, desired_word_size, actual_word_size);
51 if (result != NULL) {
52 return result;
53 }
54 return mutator_alloc_region(node_index)->attempt_allocation(min_word_size, desired_word_size, actual_word_size);
55 }
56
57 inline HeapWord* G1Allocator::attempt_allocation_locked(size_t word_size) {
58 uint node_index = _g1h->mem_node_mgr()->index_of_current_thread();
59 HeapWord* result = mutator_alloc_region(node_index)->attempt_allocation_locked(word_size);
60 assert(result != NULL || mutator_alloc_region(node_index)->get() == NULL,
61 "Must not have a mutator alloc region if there is no memory, but is " PTR_FORMAT, p2i(mutator_alloc_region(node_index)->get()));
62 return result;
63 }
64
65 inline HeapWord* G1Allocator::attempt_allocation_force(size_t word_size) {
66 uint node_index = _g1h->mem_node_mgr()->index_of_current_thread();
67 return mutator_alloc_region(node_index)->attempt_allocation_force(word_size);
68 }
69
70 inline PLAB* G1PLABAllocator::alloc_buffer(G1HeapRegionAttr dest) {
71 assert(dest.is_valid(),
72 "Allocation buffer index out of bounds: %s", dest.get_type_str());
73 assert(_alloc_buffers[dest.type()] != NULL,
74 "Allocation buffer is NULL: %s", dest.get_type_str());
75 return _alloc_buffers[dest.type()];
76 }
77
78 inline HeapWord* G1PLABAllocator::plab_allocate(G1HeapRegionAttr dest,
79 size_t word_sz) {
80 PLAB* buffer = alloc_buffer(dest);
81 if (_survivor_alignment_bytes == 0 || !dest.is_young()) {
82 return buffer->allocate(word_sz);
83 } else {
84 return buffer->allocate_aligned(word_sz, _survivor_alignment_bytes);
85 }
86 }
87
88 inline HeapWord* G1PLABAllocator::allocate(G1HeapRegionAttr dest,
89 size_t word_sz,
90 bool* refill_failed) {
91 HeapWord* const obj = plab_allocate(dest, word_sz);
92 if (obj != NULL) {
93 return obj;
94 }
95 return allocate_direct_or_new_plab(dest, word_sz, refill_failed);
96 }
97
98 // Create the maps which is used to identify archive objects.
99 inline void G1ArchiveAllocator::enable_archive_object_check() {
100 if (_archive_check_enabled) {
101 return;
102 }
103
104 _archive_check_enabled = true;
105 size_t length = G1CollectedHeap::heap()->max_reserved_capacity();
106 _closed_archive_region_map.initialize(G1CollectedHeap::heap()->base(),
107 G1CollectedHeap::heap()->base() + length,
108 HeapRegion::GrainBytes);
109 _open_archive_region_map.initialize(G1CollectedHeap::heap()->base(),
110 G1CollectedHeap::heap()->base() + length,
111 HeapRegion::GrainBytes);
112 }
113
114 // Set the regions containing the specified address range as archive.
115 inline void G1ArchiveAllocator::set_range_archive(MemRegion range, bool open) {
116 assert(_archive_check_enabled, "archive range check not enabled");
117 log_info(gc, cds)("Mark %s archive regions in map: [" PTR_FORMAT ", " PTR_FORMAT "]",
118 open ? "open" : "closed",
119 p2i(range.start()),
120 p2i(range.last()));
121 if (open) {
122 _open_archive_region_map.set_by_address(range, true);
123 } else {
124 _closed_archive_region_map.set_by_address(range, true);
125 }
126 }
127
128 // Clear the archive regions map containing the specified address range.
129 inline void G1ArchiveAllocator::clear_range_archive(MemRegion range, bool open) {
130 assert(_archive_check_enabled, "archive range check not enabled");
131 log_info(gc, cds)("Clear %s archive regions in map: [" PTR_FORMAT ", " PTR_FORMAT "]",
132 open ? "open" : "closed",
133 p2i(range.start()),
134 p2i(range.last()));
135 if (open) {
136 _open_archive_region_map.set_by_address(range, false);
137 } else {
138 _closed_archive_region_map.set_by_address(range, false);
139 }
140 }
141
142 // Check if an object is in a closed archive region using the _archive_region_map.
143 inline bool G1ArchiveAllocator::in_closed_archive_range(oop object) {
144 // This is the out-of-line part of is_closed_archive_object test, done separately
145 // to avoid additional performance impact when the check is not enabled.
146 return _closed_archive_region_map.get_by_address((HeapWord*)object);
147 }
148
149 inline bool G1ArchiveAllocator::in_open_archive_range(oop object) {
150 return _open_archive_region_map.get_by_address((HeapWord*)object);
151 }
152
153 // Check if archive object checking is enabled, to avoid calling in_open/closed_archive_range
154 // unnecessarily.
155 inline bool G1ArchiveAllocator::archive_check_enabled() {
156 return _archive_check_enabled;
157 }
158
159 inline bool G1ArchiveAllocator::is_closed_archive_object(oop object) {
160 return (archive_check_enabled() && in_closed_archive_range(object));
161 }
162
163 inline bool G1ArchiveAllocator::is_open_archive_object(oop object) {
164 return (archive_check_enabled() && in_open_archive_range(object));
165 }
166
167 inline bool G1ArchiveAllocator::is_archived_object(oop object) {
168 return (archive_check_enabled() && (in_closed_archive_range(object) ||
169 in_open_archive_range(object)));
170 }
171
172 #endif // SHARE_GC_G1_G1ALLOCATOR_INLINE_HPP