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 }
|
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 ~ShenandoahThreadLocalData();
73
74 static ShenandoahThreadLocalData* data(Thread* thread) {
75 assert(UseShenandoahGC, "Sanity");
76 return thread->gc_data<ShenandoahThreadLocalData>();
77 }
78
79 static ByteSize satb_mark_queue_offset() {
80 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _satb_mark_queue);
81 }
82
83 public:
84 static void create(Thread* thread) {
85 new (data(thread)) ShenandoahThreadLocalData();
86 }
87
88 static void destroy(Thread* thread) {
89 data(thread)->~ShenandoahThreadLocalData();
90 }
91
92 static SATBMarkQueue& satb_mark_queue(Thread* thread) {
93 return data(thread)->_satb_mark_queue;
94 }
95
96 static void set_gc_state(Thread* thread, char gc_state) {
97 data(thread)->_gc_state = gc_state;
98 }
99
100 static char gc_state(Thread* thread) {
101 return data(thread)->_gc_state;
102 }
103
104 static void initialize_gclab(Thread* thread) {
105 assert (thread->is_Java_thread() || thread->is_Worker_thread(), "Only Java and GC worker threads are allowed to get GCLABs");
106 assert(data(thread)->_gclab == nullptr, "Only initialize once");
107 data(thread)->_gclab = new PLAB(PLAB::min_size());
108 data(thread)->_gclab_size = 0;
109 data(thread)->_plab = new PLAB(PLAB::min_size());
110 data(thread)->_plab_size = 0;
111 }
112
113 static PLAB* gclab(Thread* thread) {
114 return data(thread)->_gclab;
115 }
116
117 static size_t gclab_size(Thread* thread) {
118 return data(thread)->_gclab_size;
119 }
120
121 static void set_gclab_size(Thread* thread, size_t v) {
122 data(thread)->_gclab_size = v;
123 }
124
125 static void begin_evacuation(Thread* thread, size_t bytes) {
126 data(thread)->_evacuation_stats->begin_evacuation(bytes);
127 }
128
129 static void end_evacuation(Thread* thread, size_t bytes) {
130 data(thread)->_evacuation_stats->end_evacuation(bytes);
131 }
132
133 static void record_age(Thread* thread, size_t bytes, uint age) {
134 data(thread)->_evacuation_stats->record_age(bytes, age);
135 }
136
137 static ShenandoahEvacuationStats* evacuation_stats(Thread* thread) {
138 return data(thread)->_evacuation_stats;
139 }
140
141 static PLAB* plab(Thread* thread) {
142 return data(thread)->_plab;
143 }
144
145 static size_t plab_size(Thread* thread) {
146 return data(thread)->_plab_size;
147 }
148
149 static void set_plab_size(Thread* thread, size_t v) {
150 data(thread)->_plab_size = v;
151 }
152
153 static void enable_plab_retries(Thread* thread) {
154 data(thread)->_plab_retries_enabled = true;
155 }
156
157 static void disable_plab_retries(Thread* thread) {
158 data(thread)->_plab_retries_enabled = false;
159 }
160
161 static bool plab_retries_enabled(Thread* thread) {
162 return data(thread)->_plab_retries_enabled;
163 }
164
165 static void enable_plab_promotions(Thread* thread) {
166 data(thread)->_plab_allows_promotion = true;
167 }
168
169 static void disable_plab_promotions(Thread* thread) {
170 data(thread)->_plab_allows_promotion = false;
171 }
172
173 static bool allow_plab_promotions(Thread* thread) {
174 return data(thread)->_plab_allows_promotion;
175 }
176
177 static void reset_plab_evacuated(Thread* thread) {
178 data(thread)->_plab_evacuated = 0;
179 }
180
181 static void add_to_plab_evacuated(Thread* thread, size_t increment) {
182 data(thread)->_plab_evacuated += increment;
183 }
184
185 static void subtract_from_plab_evacuated(Thread* thread, size_t increment) {
186 // TODO: Assert underflow
187 data(thread)->_plab_evacuated -= increment;
188 }
189
190 static size_t get_plab_evacuated(Thread* thread) {
191 return data(thread)->_plab_evacuated;
192 }
193
194 static void reset_plab_promoted(Thread* thread) {
195 data(thread)->_plab_promoted = 0;
196 }
197
198 static void add_to_plab_promoted(Thread* thread, size_t increment) {
199 data(thread)->_plab_promoted += increment;
200 }
201
202 static void subtract_from_plab_promoted(Thread* thread, size_t increment) {
203 // TODO: Assert underflow
204 data(thread)->_plab_promoted -= increment;
205 }
206
207 static size_t get_plab_promoted(Thread* thread) {
208 return data(thread)->_plab_promoted;
209 }
210
211 static void set_plab_preallocated_promoted(Thread* thread, size_t value) {
212 data(thread)->_plab_preallocated_promoted = value;
213 }
214
215 static size_t get_plab_preallocated_promoted(Thread* thread) {
216 return data(thread)->_plab_preallocated_promoted;
217 }
218
219 static void add_paced_time(Thread* thread, double v) {
220 data(thread)->_paced_time += v;
221 }
222
223 static double paced_time(Thread* thread) {
224 return data(thread)->_paced_time;
225 }
226
227 static void reset_paced_time(Thread* thread) {
228 data(thread)->_paced_time = 0;
229 }
230
231 // Evacuation OOM handling
232 static bool is_oom_during_evac(Thread* thread) {
233 return data(thread)->_oom_during_evac;
234 }
235
236 static void set_oom_during_evac(Thread* thread, bool oom) {
237 data(thread)->_oom_during_evac = oom;
238 }
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