]>
Commit | Line | Data |
---|---|---|
5c30094f | 1 | /* Copyright (C) 2005, 2008, 2009, 2012 Free Software Foundation, Inc. |
953ff289 DN |
2 | Contributed by Richard Henderson <rth@redhat.com>. |
3 | ||
4 | This file is part of the GNU OpenMP Library (libgomp). | |
5 | ||
6 | Libgomp is free software; you can redistribute it and/or modify it | |
748086b7 JJ |
7 | under the terms of the GNU General Public License as published by |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
953ff289 DN |
10 | |
11 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
748086b7 | 13 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
953ff289 DN |
14 | more details. |
15 | ||
748086b7 JJ |
16 | Under Section 7 of GPL version 3, you are granted additional |
17 | permissions described in the GCC Runtime Library Exception, version | |
18 | 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | You should have received a copy of the GNU General Public License and | |
21 | a copy of the GCC Runtime Library Exception along with this program; | |
22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | <http://www.gnu.org/licenses/>. */ | |
953ff289 DN |
24 | |
25 | /* This is the default PTHREADS implementation of the public OpenMP | |
26 | locking primitives. | |
27 | ||
28 | Because OpenMP uses different entry points for normal and recursive | |
29 | locks, and pthreads uses only one entry point, a system may be able | |
30 | to do better and streamline the locking as well as reduce the size | |
31 | of the types exported. */ | |
32 | ||
5c30094f | 33 | /* We need Unix98 extensions to get recursive locks. */ |
953ff289 DN |
34 | #define _XOPEN_SOURCE 500 |
35 | ||
36 | #include "libgomp.h" | |
37 | ||
a68ab351 JJ |
38 | #ifdef HAVE_BROKEN_POSIX_SEMAPHORES |
39 | void | |
40 | gomp_init_lock_30 (omp_lock_t *lock) | |
41 | { | |
42 | pthread_mutex_init (lock, NULL); | |
43 | } | |
44 | ||
45 | void | |
46 | gomp_destroy_lock_30 (omp_lock_t *lock) | |
47 | { | |
48 | pthread_mutex_destroy (lock); | |
49 | } | |
50 | ||
51 | void | |
52 | gomp_set_lock_30 (omp_lock_t *lock) | |
53 | { | |
54 | pthread_mutex_lock (lock); | |
55 | } | |
56 | ||
57 | void | |
58 | gomp_unset_lock_30 (omp_lock_t *lock) | |
59 | { | |
60 | pthread_mutex_unlock (lock); | |
61 | } | |
62 | ||
63 | int | |
64 | gomp_test_lock_30 (omp_lock_t *lock) | |
65 | { | |
66 | return pthread_mutex_trylock (lock) == 0; | |
67 | } | |
68 | ||
69 | void | |
70 | gomp_init_nest_lock_30 (omp_nest_lock_t *lock) | |
71 | { | |
72 | pthread_mutex_init (&lock->lock, NULL); | |
73 | lock->count = 0; | |
74 | lock->owner = NULL; | |
75 | } | |
76 | ||
77 | void | |
78 | gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock) | |
79 | { | |
80 | pthread_mutex_destroy (&lock->lock); | |
81 | } | |
82 | ||
83 | void | |
84 | gomp_set_nest_lock_30 (omp_nest_lock_t *lock) | |
85 | { | |
86 | void *me = gomp_icv (true); | |
87 | ||
88 | if (lock->owner != me) | |
89 | { | |
90 | pthread_mutex_lock (&lock->lock); | |
91 | lock->owner = me; | |
92 | } | |
93 | lock->count++; | |
94 | } | |
95 | ||
96 | void | |
97 | gomp_unset_nest_lock_30 (omp_nest_lock_t *lock) | |
98 | { | |
99 | if (--lock->count == 0) | |
100 | { | |
101 | lock->owner = NULL; | |
102 | pthread_mutex_unlock (&lock->lock); | |
103 | } | |
104 | } | |
105 | ||
106 | int | |
107 | gomp_test_nest_lock_30 (omp_nest_lock_t *lock) | |
108 | { | |
109 | void *me = gomp_icv (true); | |
110 | ||
111 | if (lock->owner != me) | |
112 | { | |
113 | if (pthread_mutex_trylock (&lock->lock) != 0) | |
114 | return 0; | |
115 | lock->owner = me; | |
116 | } | |
117 | ||
118 | return ++lock->count; | |
119 | } | |
120 | ||
121 | #else | |
953ff289 DN |
122 | |
123 | void | |
a68ab351 JJ |
124 | gomp_init_lock_30 (omp_lock_t *lock) |
125 | { | |
126 | sem_init (lock, 0, 1); | |
127 | } | |
128 | ||
129 | void | |
130 | gomp_destroy_lock_30 (omp_lock_t *lock) | |
131 | { | |
132 | sem_destroy (lock); | |
133 | } | |
134 | ||
135 | void | |
136 | gomp_set_lock_30 (omp_lock_t *lock) | |
137 | { | |
138 | while (sem_wait (lock) != 0) | |
139 | ; | |
140 | } | |
141 | ||
142 | void | |
143 | gomp_unset_lock_30 (omp_lock_t *lock) | |
144 | { | |
145 | sem_post (lock); | |
146 | } | |
147 | ||
148 | int | |
149 | gomp_test_lock_30 (omp_lock_t *lock) | |
150 | { | |
151 | return sem_trywait (lock) == 0; | |
152 | } | |
153 | ||
154 | void | |
155 | gomp_init_nest_lock_30 (omp_nest_lock_t *lock) | |
156 | { | |
157 | sem_init (&lock->lock, 0, 1); | |
158 | lock->count = 0; | |
159 | lock->owner = NULL; | |
160 | } | |
161 | ||
162 | void | |
163 | gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock) | |
164 | { | |
165 | sem_destroy (&lock->lock); | |
166 | } | |
167 | ||
168 | void | |
169 | gomp_set_nest_lock_30 (omp_nest_lock_t *lock) | |
170 | { | |
171 | void *me = gomp_icv (true); | |
172 | ||
173 | if (lock->owner != me) | |
174 | { | |
175 | while (sem_wait (&lock->lock) != 0) | |
176 | ; | |
177 | lock->owner = me; | |
178 | } | |
179 | lock->count++; | |
180 | } | |
181 | ||
182 | void | |
183 | gomp_unset_nest_lock_30 (omp_nest_lock_t *lock) | |
184 | { | |
185 | if (--lock->count == 0) | |
186 | { | |
187 | lock->owner = NULL; | |
188 | sem_post (&lock->lock); | |
189 | } | |
190 | } | |
191 | ||
192 | int | |
193 | gomp_test_nest_lock_30 (omp_nest_lock_t *lock) | |
194 | { | |
195 | void *me = gomp_icv (true); | |
196 | ||
197 | if (lock->owner != me) | |
198 | { | |
199 | if (sem_trywait (&lock->lock) != 0) | |
200 | return 0; | |
201 | lock->owner = me; | |
202 | } | |
203 | ||
204 | return ++lock->count; | |
205 | } | |
206 | #endif | |
207 | ||
208 | #ifdef LIBGOMP_GNU_SYMBOL_VERSIONING | |
209 | void | |
210 | gomp_init_lock_25 (omp_lock_25_t *lock) | |
953ff289 DN |
211 | { |
212 | pthread_mutex_init (lock, NULL); | |
213 | } | |
214 | ||
215 | void | |
a68ab351 | 216 | gomp_destroy_lock_25 (omp_lock_25_t *lock) |
953ff289 DN |
217 | { |
218 | pthread_mutex_destroy (lock); | |
219 | } | |
220 | ||
221 | void | |
a68ab351 | 222 | gomp_set_lock_25 (omp_lock_25_t *lock) |
953ff289 DN |
223 | { |
224 | pthread_mutex_lock (lock); | |
225 | } | |
226 | ||
227 | void | |
a68ab351 | 228 | gomp_unset_lock_25 (omp_lock_25_t *lock) |
953ff289 DN |
229 | { |
230 | pthread_mutex_unlock (lock); | |
231 | } | |
232 | ||
233 | int | |
a68ab351 | 234 | gomp_test_lock_25 (omp_lock_25_t *lock) |
953ff289 DN |
235 | { |
236 | return pthread_mutex_trylock (lock) == 0; | |
237 | } | |
238 | ||
239 | void | |
a68ab351 | 240 | gomp_init_nest_lock_25 (omp_nest_lock_25_t *lock) |
953ff289 DN |
241 | { |
242 | pthread_mutexattr_t attr; | |
243 | ||
244 | pthread_mutexattr_init (&attr); | |
245 | pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE); | |
246 | pthread_mutex_init (&lock->lock, &attr); | |
247 | lock->count = 0; | |
248 | pthread_mutexattr_destroy (&attr); | |
249 | } | |
250 | ||
251 | void | |
a68ab351 | 252 | gomp_destroy_nest_lock_25 (omp_nest_lock_25_t *lock) |
953ff289 DN |
253 | { |
254 | pthread_mutex_destroy (&lock->lock); | |
255 | } | |
256 | ||
257 | void | |
a68ab351 | 258 | gomp_set_nest_lock_25 (omp_nest_lock_25_t *lock) |
953ff289 DN |
259 | { |
260 | pthread_mutex_lock (&lock->lock); | |
261 | lock->count++; | |
262 | } | |
263 | ||
264 | void | |
a68ab351 | 265 | gomp_unset_nest_lock_25 (omp_nest_lock_25_t *lock) |
953ff289 DN |
266 | { |
267 | lock->count--; | |
268 | pthread_mutex_unlock (&lock->lock); | |
269 | } | |
270 | ||
271 | int | |
a68ab351 | 272 | gomp_test_nest_lock_25 (omp_nest_lock_25_t *lock) |
953ff289 DN |
273 | { |
274 | if (pthread_mutex_trylock (&lock->lock) == 0) | |
275 | return ++lock->count; | |
276 | return 0; | |
277 | } | |
278 | ||
a68ab351 JJ |
279 | omp_lock_symver (omp_init_lock) |
280 | omp_lock_symver (omp_destroy_lock) | |
281 | omp_lock_symver (omp_set_lock) | |
282 | omp_lock_symver (omp_unset_lock) | |
283 | omp_lock_symver (omp_test_lock) | |
284 | omp_lock_symver (omp_init_nest_lock) | |
285 | omp_lock_symver (omp_destroy_nest_lock) | |
286 | omp_lock_symver (omp_set_nest_lock) | |
287 | omp_lock_symver (omp_unset_nest_lock) | |
288 | omp_lock_symver (omp_test_nest_lock) | |
289 | ||
290 | #else | |
291 | ||
953ff289 DN |
292 | ialias (omp_init_lock) |
293 | ialias (omp_init_nest_lock) | |
294 | ialias (omp_destroy_lock) | |
295 | ialias (omp_destroy_nest_lock) | |
296 | ialias (omp_set_lock) | |
297 | ialias (omp_set_nest_lock) | |
298 | ialias (omp_unset_lock) | |
299 | ialias (omp_unset_nest_lock) | |
300 | ialias (omp_test_lock) | |
301 | ialias (omp_test_nest_lock) | |
a68ab351 JJ |
302 | |
303 | #endif |