projects / thirdparty / gcc.git / blame
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|---|---|---|
| 953ff289 DN |
1 | /* Copyright (C) 2005 Free Software Foundation, Inc. |
| 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 | |
| 7 | under the terms of the GNU Lesser General Public License as published by | |
| 8 | the Free Software Foundation; either version 2.1 of the License, or | |
| 9 | (at your option) any later version. | |
| 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 | |
| 13 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for | |
| 14 | more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public License | |
| 17 | along with libgomp; see the file COPYING.LIB. If not, write to the | |
| 18 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
| 19 | MA 02110-1301, USA. */ | |
| 20 | ||
| 21 | /* As a special exception, if you link this library with other files, some | |
| 22 | of which are compiled with GCC, to produce an executable, this library | |
| 23 | does not by itself cause the resulting executable to be covered by the | |
| 24 | GNU General Public License. This exception does not however invalidate | |
| 25 | any other reasons why the executable file might be covered by the GNU | |
| 26 | General Public License. */ | |
| 27 | ||
| 28 | /* This is the default POSIX 1003.1b implementation of a semaphore | |
| 29 | synchronization mechanism for libgomp. This type is private to | |
| 30 | the library. | |
| 31 | ||
| 32 | This is a bit heavy weight for what we need, in that we're not | |
| 33 | interested in sem_wait as a cancelation point, but it's not too | |
| 34 | bad for a default. */ | |
| 35 | ||
| 36 | #ifndef GOMP_SEM_H | |
| 37 | #define GOMP_SEM_H 1 | |
| 38 | ||
| 39 | #ifdef HAVE_ATTRIBUTE_VISIBILITY | |
| 40 | # pragma GCC visibility push(default) | |
| 41 | #endif | |
| 42 | ||
| 43 | #include <semaphore.h> | |
| 44 | ||
| 45 | #ifdef HAVE_ATTRIBUTE_VISIBILITY | |
| 46 | # pragma GCC visibility pop | |
| 47 | #endif | |
| 48 | ||
| 49 | typedef sem_t gomp_sem_t; | |
| 50 | ||
| 51 | static inline void gomp_sem_init (gomp_sem_t *sem, int value) | |
| 52 | { | |
| 53 | sem_init (sem, 0, value); | |
| 54 | } | |
| 55 | ||
| 56 | extern void gomp_sem_wait (gomp_sem_t *sem); | |
| 57 | ||
| 58 | static inline void gomp_sem_post (gomp_sem_t *sem) | |
| 59 | { | |
| 60 | sem_post (sem); | |
| 61 | } | |
| 62 | ||
| 63 | static inline void gomp_sem_destroy (gomp_sem_t *sem) | |
| 64 | { | |
| 65 | sem_destroy (sem); | |
| 66 | } | |
| 67 | ||
| 68 | #endif /* GOMP_SEM_H */ |