projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| a945c346 | 1 | /* Copyright (C) 2005-2024 Free Software Foundation, Inc. |
| 953ff289 DN |
2 | Contributed by Richard Henderson <rth@redhat.com>. |
| 3 | ||
| f1f3453e TS |
4 | This file is part of the GNU Offloading and Multi Processing Library |
| 5 | (libgomp). | |
| 953ff289 DN |
6 | |
| 7 | Libgomp is free software; you can redistribute it and/or modify it | |
| 748086b7 JJ |
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. | |
| 953ff289 DN |
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 |
| 953ff289 DN |
15 | more details. |
| 16 | ||
| 748086b7 JJ |
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/>. */ | |
| 953ff289 DN |
25 | |
| 26 | /* This is the default POSIX 1003.1b implementation of a semaphore | |
| 27 | synchronization mechanism for libgomp. This type is private to | |
| 28 | the library. | |
| 29 | ||
| 30 | This is a bit heavy weight for what we need, in that we're not | |
| 31 | interested in sem_wait as a cancelation point, but it's not too | |
| 32 | bad for a default. */ | |
| 33 | ||
| 34 | #ifndef GOMP_SEM_H | |
| 35 | #define GOMP_SEM_H 1 | |
| 36 | ||
| 37 | #ifdef HAVE_ATTRIBUTE_VISIBILITY | |
| 38 | # pragma GCC visibility push(default) | |
| 39 | #endif | |
| 40 | ||
| 41 | #include <semaphore.h> | |
| 42 | ||
| 43 | #ifdef HAVE_ATTRIBUTE_VISIBILITY | |
| 44 | # pragma GCC visibility pop | |
| 45 | #endif | |
| 46 | ||
| d349482e AT |
47 | #ifdef HAVE_BROKEN_POSIX_SEMAPHORES |
| 48 | #include <pthread.h> | |
| 49 | ||
| 50 | struct gomp_sem | |
| 51 | { | |
| 52 | pthread_mutex_t mutex; | |
| 53 | pthread_cond_t cond; | |
| 54 | int value; | |
| 55 | }; | |
| 56 | ||
| 57 | typedef struct gomp_sem gomp_sem_t; | |
| 58 | ||
| 59 | extern void gomp_sem_init (gomp_sem_t *sem, int value); | |
| 60 | ||
| 61 | extern void gomp_sem_wait (gomp_sem_t *sem); | |
| 62 | ||
| 63 | extern void gomp_sem_post (gomp_sem_t *sem); | |
| 64 | ||
| 65 | extern void gomp_sem_destroy (gomp_sem_t *sem); | |
| 66 | ||
| d3b41bde JJ |
67 | extern int gomp_sem_getcount (gomp_sem_t *sem); |
| 68 | ||
| d349482e AT |
69 | #else /* HAVE_BROKEN_POSIX_SEMAPHORES */ |
| 70 | ||
| 953ff289 DN |
71 | typedef sem_t gomp_sem_t; |
| 72 | ||
| 73 | static inline void gomp_sem_init (gomp_sem_t *sem, int value) | |
| 74 | { | |
| 75 | sem_init (sem, 0, value); | |
| 76 | } | |
| 77 | ||
| 78 | extern void gomp_sem_wait (gomp_sem_t *sem); | |
| 79 | ||
| 80 | static inline void gomp_sem_post (gomp_sem_t *sem) | |
| 81 | { | |
| 82 | sem_post (sem); | |
| 83 | } | |
| 84 | ||
| 85 | static inline void gomp_sem_destroy (gomp_sem_t *sem) | |
| 86 | { | |
| 87 | sem_destroy (sem); | |
| 88 | } | |
| d3b41bde JJ |
89 | |
| 90 | static inline int gomp_sem_getcount (gomp_sem_t *sem) | |
| 91 | { | |
| 92 | int val; | |
| 93 | if (sem_getvalue (sem, &val) < 0) | |
| 94 | return -1; | |
| 95 | return val; | |
| 96 | } | |
| d349482e AT |
97 | #endif /* doesn't HAVE_BROKEN_POSIX_SEMAPHORES */ |
| 98 | #endif /* GOMP_SEM_H */ |