1 /*
2 * Copyright (c) 2018, 2022, Red Hat, Inc. 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_SHENANDOAH_SHENANDOAHTHREADLOCALDATA_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHTHREADLOCALDATA_HPP
27
28 #include "gc/shared/plab.hpp"
29 #include "gc/shared/gcThreadLocalData.hpp"
30 #include "gc/shared/gc_globals.hpp"
31 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
32 #include "gc/shenandoah/shenandoahCodeRoots.hpp"
33 #include "gc/shenandoah/shenandoahSATBMarkQueueSet.hpp"
34 #include "runtime/javaThread.hpp"
35 #include "utilities/debug.hpp"
36 #include "utilities/sizes.hpp"
37
38 class ShenandoahThreadLocalData {
39 private:
40 char _gc_state;
41 // Evacuation OOM state
42 uint8_t _oom_scope_nesting_level;
43 bool _oom_during_evac;
44 SATBMarkQueue _satb_mark_queue;
45 PLAB* _gclab;
46 size_t _gclab_size;
47 double _paced_time;
48
49 ShenandoahThreadLocalData() :
50 _gc_state(0),
51 _oom_scope_nesting_level(0),
52 _oom_during_evac(false),
53 _satb_mark_queue(&ShenandoahBarrierSet::satb_mark_queue_set()),
54 _gclab(nullptr),
55 _gclab_size(0),
56 _paced_time(0) {
57 }
58
59 ~ShenandoahThreadLocalData() {
60 if (_gclab != nullptr) {
61 delete _gclab;
62 }
63 }
64
65 static ShenandoahThreadLocalData* data(Thread* thread) {
66 assert(UseShenandoahGC, "Sanity");
67 return thread->gc_data<ShenandoahThreadLocalData>();
68 }
69
70 static ByteSize satb_mark_queue_offset() {
71 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _satb_mark_queue);
72 }
73
74 public:
75 static void create(Thread* thread) {
76 new (data(thread)) ShenandoahThreadLocalData();
77 }
78
79 static void destroy(Thread* thread) {
80 data(thread)->~ShenandoahThreadLocalData();
81 }
82
83 static SATBMarkQueue& satb_mark_queue(Thread* thread) {
84 return data(thread)->_satb_mark_queue;
85 }
86
87 static void set_gc_state(Thread* thread, char gc_state) {
88 data(thread)->_gc_state = gc_state;
89 }
90
91 static char gc_state(Thread* thread) {
92 return data(thread)->_gc_state;
93 }
94
95 static void initialize_gclab(Thread* thread) {
96 assert (thread->is_Java_thread() || thread->is_Worker_thread(), "Only Java and GC worker threads are allowed to get GCLABs");
97 assert(data(thread)->_gclab == nullptr, "Only initialize once");
98 data(thread)->_gclab = new PLAB(PLAB::min_size());
99 data(thread)->_gclab_size = 0;
100 }
101
102 static PLAB* gclab(Thread* thread) {
103 return data(thread)->_gclab;
104 }
105
106 static size_t gclab_size(Thread* thread) {
107 return data(thread)->_gclab_size;
108 }
109
110 static void set_gclab_size(Thread* thread, size_t v) {
111 data(thread)->_gclab_size = v;
112 }
113
114 static void add_paced_time(Thread* thread, double v) {
115 data(thread)->_paced_time += v;
116 }
117
118 static double paced_time(Thread* thread) {
119 return data(thread)->_paced_time;
120 }
121
122 static void reset_paced_time(Thread* thread) {
123 data(thread)->_paced_time = 0;
124 }
125
126 // Evacuation OOM handling
127 static bool is_oom_during_evac(Thread* thread) {
128 return data(thread)->_oom_during_evac;
129 }
130
131 static void set_oom_during_evac(Thread* thread, bool oom) {
132 data(thread)->_oom_during_evac = oom;
133 }
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1 /*
2 * Copyright (c) 2018, 2022, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHTHREADLOCALDATA_HPP
27 #define SHARE_GC_SHENANDOAH_SHENANDOAHTHREADLOCALDATA_HPP
28
29 #include "gc/shared/plab.hpp"
30 #include "gc/shared/gcThreadLocalData.hpp"
31 #include "gc/shared/gc_globals.hpp"
32 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
33 #include "gc/shenandoah/shenandoahCodeRoots.hpp"
34 #include "gc/shenandoah/shenandoahEvacTracker.hpp"
35 #include "gc/shenandoah/shenandoahSATBMarkQueueSet.hpp"
36 #include "runtime/javaThread.hpp"
37 #include "utilities/debug.hpp"
38 #include "utilities/sizes.hpp"
39
40 class ShenandoahThreadLocalData {
41 private:
42 char _gc_state;
43 // Evacuation OOM state
44 uint8_t _oom_scope_nesting_level;
45 bool _oom_during_evac;
46
47 SATBMarkQueue _satb_mark_queue;
48
49 // Thread-local allocation buffer for object evacuations.
50 // In generational mode, it is exclusive to the young generation.
51 PLAB* _gclab;
52 size_t _gclab_size;
53
54 double _paced_time;
55
56 // Thread-local allocation buffer only used in generational mode.
57 // Used both by mutator threads and by GC worker threads
58 // for evacuations within the old generation and
59 // for promotions from the young generation into the old generation.
60 PLAB* _plab;
61 size_t _plab_size;
62
63 size_t _plab_evacuated;
64 size_t _plab_promoted;
65 size_t _plab_preallocated_promoted;
66 bool _plab_allows_promotion; // If false, no more promotion by this thread during this evacuation phase.
67 bool _plab_retries_enabled;
68
69 ShenandoahEvacuationStats* _evacuation_stats;
70
71 ShenandoahThreadLocalData() :
72 _gc_state(0),
73 _oom_scope_nesting_level(0),
74 _oom_during_evac(false),
75 _satb_mark_queue(&ShenandoahBarrierSet::satb_mark_queue_set()),
76 _gclab(nullptr),
77 _gclab_size(0),
78 _paced_time(0),
79 _plab(nullptr),
80 _plab_size(0),
81 _plab_evacuated(0),
82 _plab_promoted(0),
83 _plab_preallocated_promoted(0),
84 _plab_allows_promotion(true),
85 _plab_retries_enabled(true),
86 _evacuation_stats(new ShenandoahEvacuationStats()) {
87 }
88
89 ~ShenandoahThreadLocalData() {
90 if (_gclab != nullptr) {
91 delete _gclab;
92 }
93 if (_plab != nullptr) {
94 ShenandoahHeap::heap()->retire_plab(_plab);
95 delete _plab;
96 }
97
98 // TODO: Preserve these stats somewhere for mutator threads.
99 delete _evacuation_stats;
100 }
101
102 static ShenandoahThreadLocalData* data(Thread* thread) {
103 assert(UseShenandoahGC, "Sanity");
104 return thread->gc_data<ShenandoahThreadLocalData>();
105 }
106
107 static ByteSize satb_mark_queue_offset() {
108 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _satb_mark_queue);
109 }
110
111 public:
112 static void create(Thread* thread) {
113 new (data(thread)) ShenandoahThreadLocalData();
114 }
115
116 static void destroy(Thread* thread) {
117 data(thread)->~ShenandoahThreadLocalData();
118 }
119
120 static SATBMarkQueue& satb_mark_queue(Thread* thread) {
121 return data(thread)->_satb_mark_queue;
122 }
123
124 static void set_gc_state(Thread* thread, char gc_state) {
125 data(thread)->_gc_state = gc_state;
126 }
127
128 static char gc_state(Thread* thread) {
129 return data(thread)->_gc_state;
130 }
131
132 static void initialize_gclab(Thread* thread) {
133 assert (thread->is_Java_thread() || thread->is_Worker_thread(), "Only Java and GC worker threads are allowed to get GCLABs");
134 assert(data(thread)->_gclab == nullptr, "Only initialize once");
135 data(thread)->_gclab = new PLAB(PLAB::min_size());
136 data(thread)->_gclab_size = 0;
137 data(thread)->_plab = new PLAB(PLAB::min_size());
138 data(thread)->_plab_size = 0;
139 }
140
141 static PLAB* gclab(Thread* thread) {
142 return data(thread)->_gclab;
143 }
144
145 static size_t gclab_size(Thread* thread) {
146 return data(thread)->_gclab_size;
147 }
148
149 static void set_gclab_size(Thread* thread, size_t v) {
150 data(thread)->_gclab_size = v;
151 }
152
153 static void begin_evacuation(Thread* thread, size_t bytes) {
154 data(thread)->_evacuation_stats->begin_evacuation(bytes);
155 }
156
157 static void end_evacuation(Thread* thread, size_t bytes, uint age) {
158 data(thread)->_evacuation_stats->end_evacuation(bytes, age);
159 }
160
161 static ShenandoahEvacuationStats* evacuation_stats(Thread* thread) {
162 return data(thread)->_evacuation_stats;
163 }
164
165 static PLAB* plab(Thread* thread) {
166 return data(thread)->_plab;
167 }
168
169 static size_t plab_size(Thread* thread) {
170 return data(thread)->_plab_size;
171 }
172
173 static void set_plab_size(Thread* thread, size_t v) {
174 data(thread)->_plab_size = v;
175 }
176
177 static void enable_plab_retries(Thread* thread) {
178 data(thread)->_plab_retries_enabled = true;
179 }
180
181 static void disable_plab_retries(Thread* thread) {
182 data(thread)->_plab_retries_enabled = false;
183 }
184
185 static bool plab_retries_enabled(Thread* thread) {
186 return data(thread)->_plab_retries_enabled;
187 }
188
189 static void enable_plab_promotions(Thread* thread) {
190 data(thread)->_plab_allows_promotion = true;
191 }
192
193 static void disable_plab_promotions(Thread* thread) {
194 data(thread)->_plab_allows_promotion = false;
195 }
196
197 static bool allow_plab_promotions(Thread* thread) {
198 return data(thread)->_plab_allows_promotion;
199 }
200
201 static void reset_plab_evacuated(Thread* thread) {
202 data(thread)->_plab_evacuated = 0;
203 }
204
205 static void add_to_plab_evacuated(Thread* thread, size_t increment) {
206 data(thread)->_plab_evacuated += increment;
207 }
208
209 static void subtract_from_plab_evacuated(Thread* thread, size_t increment) {
210 // TODO: Assert underflow
211 data(thread)->_plab_evacuated -= increment;
212 }
213
214 static size_t get_plab_evacuated(Thread* thread) {
215 return data(thread)->_plab_evacuated;
216 }
217
218 static void reset_plab_promoted(Thread* thread) {
219 data(thread)->_plab_promoted = 0;
220 }
221
222 static void add_to_plab_promoted(Thread* thread, size_t increment) {
223 data(thread)->_plab_promoted += increment;
224 }
225
226 static void subtract_from_plab_promoted(Thread* thread, size_t increment) {
227 // TODO: Assert underflow
228 data(thread)->_plab_promoted -= increment;
229 }
230
231 static size_t get_plab_promoted(Thread* thread) {
232 return data(thread)->_plab_promoted;
233 }
234
235 static void set_plab_preallocated_promoted(Thread* thread, size_t value) {
236 data(thread)->_plab_preallocated_promoted = value;
237 }
238
239 static size_t get_plab_preallocated_promoted(Thread* thread) {
240 return data(thread)->_plab_preallocated_promoted;
241 }
242
243 static void add_paced_time(Thread* thread, double v) {
244 data(thread)->_paced_time += v;
245 }
246
247 static double paced_time(Thread* thread) {
248 return data(thread)->_paced_time;
249 }
250
251 static void reset_paced_time(Thread* thread) {
252 data(thread)->_paced_time = 0;
253 }
254
255 // Evacuation OOM handling
256 static bool is_oom_during_evac(Thread* thread) {
257 return data(thread)->_oom_during_evac;
258 }
259
260 static void set_oom_during_evac(Thread* thread, bool oom) {
261 data(thread)->_oom_during_evac = oom;
262 }
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