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8d9254fc | 1 | /* Copyright (C) 2005-2020 Free Software Foundation, Inc. |
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2 | Contributed by Richard Henderson <rth@redhat.com>. |
3 | ||
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4 | This file is part of the GNU Offloading and Multi Processing Library |
5 | (libgomp). | |
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6 | |
7 | Libgomp is free software; you can redistribute it and/or modify it | |
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8 | under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
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11 | |
12 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
748086b7 | 14 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 | more details. |
16 | ||
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17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
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25 | |
26 | /* This is the default PTHREADS implementation of the public OpenMP | |
27 | locking primitives. | |
28 | ||
29 | Because OpenMP uses different entry points for normal and recursive | |
30 | locks, and pthreads uses only one entry point, a system may be able | |
31 | to do better and streamline the locking as well as reduce the size | |
32 | of the types exported. */ | |
33 | ||
8c768629 RO |
34 | /* We need UNIX98/XPG5 extensions to get recursive locks. Request XPG6 since |
35 | Solaris requires this for C99 and later. */ | |
36 | #define _XOPEN_SOURCE 600 | |
953ff289 DN |
37 | |
38 | #include "libgomp.h" | |
39 | ||
a68ab351 JJ |
40 | #ifdef HAVE_BROKEN_POSIX_SEMAPHORES |
41 | void | |
42 | gomp_init_lock_30 (omp_lock_t *lock) | |
43 | { | |
44 | pthread_mutex_init (lock, NULL); | |
45 | } | |
46 | ||
47 | void | |
48 | gomp_destroy_lock_30 (omp_lock_t *lock) | |
49 | { | |
50 | pthread_mutex_destroy (lock); | |
51 | } | |
52 | ||
53 | void | |
54 | gomp_set_lock_30 (omp_lock_t *lock) | |
55 | { | |
56 | pthread_mutex_lock (lock); | |
57 | } | |
58 | ||
59 | void | |
60 | gomp_unset_lock_30 (omp_lock_t *lock) | |
61 | { | |
62 | pthread_mutex_unlock (lock); | |
63 | } | |
64 | ||
65 | int | |
66 | gomp_test_lock_30 (omp_lock_t *lock) | |
67 | { | |
68 | return pthread_mutex_trylock (lock) == 0; | |
69 | } | |
70 | ||
71 | void | |
72 | gomp_init_nest_lock_30 (omp_nest_lock_t *lock) | |
73 | { | |
74 | pthread_mutex_init (&lock->lock, NULL); | |
75 | lock->count = 0; | |
76 | lock->owner = NULL; | |
77 | } | |
78 | ||
79 | void | |
80 | gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock) | |
81 | { | |
82 | pthread_mutex_destroy (&lock->lock); | |
83 | } | |
84 | ||
85 | void | |
86 | gomp_set_nest_lock_30 (omp_nest_lock_t *lock) | |
87 | { | |
88 | void *me = gomp_icv (true); | |
89 | ||
90 | if (lock->owner != me) | |
91 | { | |
92 | pthread_mutex_lock (&lock->lock); | |
93 | lock->owner = me; | |
94 | } | |
95 | lock->count++; | |
96 | } | |
97 | ||
98 | void | |
99 | gomp_unset_nest_lock_30 (omp_nest_lock_t *lock) | |
100 | { | |
101 | if (--lock->count == 0) | |
102 | { | |
103 | lock->owner = NULL; | |
104 | pthread_mutex_unlock (&lock->lock); | |
105 | } | |
106 | } | |
107 | ||
108 | int | |
109 | gomp_test_nest_lock_30 (omp_nest_lock_t *lock) | |
110 | { | |
111 | void *me = gomp_icv (true); | |
112 | ||
113 | if (lock->owner != me) | |
114 | { | |
115 | if (pthread_mutex_trylock (&lock->lock) != 0) | |
116 | return 0; | |
117 | lock->owner = me; | |
118 | } | |
119 | ||
120 | return ++lock->count; | |
121 | } | |
122 | ||
123 | #else | |
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124 | |
125 | void | |
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126 | gomp_init_lock_30 (omp_lock_t *lock) |
127 | { | |
128 | sem_init (lock, 0, 1); | |
129 | } | |
130 | ||
131 | void | |
132 | gomp_destroy_lock_30 (omp_lock_t *lock) | |
133 | { | |
134 | sem_destroy (lock); | |
135 | } | |
136 | ||
137 | void | |
138 | gomp_set_lock_30 (omp_lock_t *lock) | |
139 | { | |
140 | while (sem_wait (lock) != 0) | |
141 | ; | |
142 | } | |
143 | ||
144 | void | |
145 | gomp_unset_lock_30 (omp_lock_t *lock) | |
146 | { | |
147 | sem_post (lock); | |
148 | } | |
149 | ||
150 | int | |
151 | gomp_test_lock_30 (omp_lock_t *lock) | |
152 | { | |
153 | return sem_trywait (lock) == 0; | |
154 | } | |
155 | ||
156 | void | |
157 | gomp_init_nest_lock_30 (omp_nest_lock_t *lock) | |
158 | { | |
159 | sem_init (&lock->lock, 0, 1); | |
160 | lock->count = 0; | |
161 | lock->owner = NULL; | |
162 | } | |
163 | ||
164 | void | |
165 | gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock) | |
166 | { | |
167 | sem_destroy (&lock->lock); | |
168 | } | |
169 | ||
170 | void | |
171 | gomp_set_nest_lock_30 (omp_nest_lock_t *lock) | |
172 | { | |
173 | void *me = gomp_icv (true); | |
174 | ||
175 | if (lock->owner != me) | |
176 | { | |
177 | while (sem_wait (&lock->lock) != 0) | |
178 | ; | |
179 | lock->owner = me; | |
180 | } | |
181 | lock->count++; | |
182 | } | |
183 | ||
184 | void | |
185 | gomp_unset_nest_lock_30 (omp_nest_lock_t *lock) | |
186 | { | |
187 | if (--lock->count == 0) | |
188 | { | |
189 | lock->owner = NULL; | |
190 | sem_post (&lock->lock); | |
191 | } | |
192 | } | |
193 | ||
194 | int | |
195 | gomp_test_nest_lock_30 (omp_nest_lock_t *lock) | |
196 | { | |
197 | void *me = gomp_icv (true); | |
198 | ||
199 | if (lock->owner != me) | |
200 | { | |
201 | if (sem_trywait (&lock->lock) != 0) | |
202 | return 0; | |
203 | lock->owner = me; | |
204 | } | |
205 | ||
206 | return ++lock->count; | |
207 | } | |
208 | #endif | |
209 | ||
210 | #ifdef LIBGOMP_GNU_SYMBOL_VERSIONING | |
211 | void | |
212 | gomp_init_lock_25 (omp_lock_25_t *lock) | |
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213 | { |
214 | pthread_mutex_init (lock, NULL); | |
215 | } | |
216 | ||
217 | void | |
a68ab351 | 218 | gomp_destroy_lock_25 (omp_lock_25_t *lock) |
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219 | { |
220 | pthread_mutex_destroy (lock); | |
221 | } | |
222 | ||
223 | void | |
a68ab351 | 224 | gomp_set_lock_25 (omp_lock_25_t *lock) |
953ff289 DN |
225 | { |
226 | pthread_mutex_lock (lock); | |
227 | } | |
228 | ||
229 | void | |
a68ab351 | 230 | gomp_unset_lock_25 (omp_lock_25_t *lock) |
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231 | { |
232 | pthread_mutex_unlock (lock); | |
233 | } | |
234 | ||
235 | int | |
a68ab351 | 236 | gomp_test_lock_25 (omp_lock_25_t *lock) |
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237 | { |
238 | return pthread_mutex_trylock (lock) == 0; | |
239 | } | |
240 | ||
241 | void | |
a68ab351 | 242 | gomp_init_nest_lock_25 (omp_nest_lock_25_t *lock) |
953ff289 DN |
243 | { |
244 | pthread_mutexattr_t attr; | |
245 | ||
246 | pthread_mutexattr_init (&attr); | |
247 | pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE); | |
248 | pthread_mutex_init (&lock->lock, &attr); | |
249 | lock->count = 0; | |
250 | pthread_mutexattr_destroy (&attr); | |
251 | } | |
252 | ||
253 | void | |
a68ab351 | 254 | gomp_destroy_nest_lock_25 (omp_nest_lock_25_t *lock) |
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255 | { |
256 | pthread_mutex_destroy (&lock->lock); | |
257 | } | |
258 | ||
259 | void | |
a68ab351 | 260 | gomp_set_nest_lock_25 (omp_nest_lock_25_t *lock) |
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261 | { |
262 | pthread_mutex_lock (&lock->lock); | |
263 | lock->count++; | |
264 | } | |
265 | ||
266 | void | |
a68ab351 | 267 | gomp_unset_nest_lock_25 (omp_nest_lock_25_t *lock) |
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268 | { |
269 | lock->count--; | |
270 | pthread_mutex_unlock (&lock->lock); | |
271 | } | |
272 | ||
273 | int | |
a68ab351 | 274 | gomp_test_nest_lock_25 (omp_nest_lock_25_t *lock) |
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275 | { |
276 | if (pthread_mutex_trylock (&lock->lock) == 0) | |
277 | return ++lock->count; | |
278 | return 0; | |
279 | } | |
280 | ||
a68ab351 JJ |
281 | omp_lock_symver (omp_init_lock) |
282 | omp_lock_symver (omp_destroy_lock) | |
283 | omp_lock_symver (omp_set_lock) | |
284 | omp_lock_symver (omp_unset_lock) | |
285 | omp_lock_symver (omp_test_lock) | |
286 | omp_lock_symver (omp_init_nest_lock) | |
287 | omp_lock_symver (omp_destroy_nest_lock) | |
288 | omp_lock_symver (omp_set_nest_lock) | |
289 | omp_lock_symver (omp_unset_nest_lock) | |
290 | omp_lock_symver (omp_test_nest_lock) | |
291 | ||
292 | #else | |
293 | ||
953ff289 DN |
294 | ialias (omp_init_lock) |
295 | ialias (omp_init_nest_lock) | |
296 | ialias (omp_destroy_lock) | |
297 | ialias (omp_destroy_nest_lock) | |
298 | ialias (omp_set_lock) | |
299 | ialias (omp_set_nest_lock) | |
300 | ialias (omp_unset_lock) | |
301 | ialias (omp_unset_nest_lock) | |
302 | ialias (omp_test_lock) | |
303 | ialias (omp_test_nest_lock) | |
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304 | |
305 | #endif |