Mercurial > hg > CbC > CbC_gcc
diff libgomp/config/posix/sem.h @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 04ced10e8804 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libgomp/config/posix/sem.h Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,87 @@ +/* Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. + Contributed by Richard Henderson <rth@redhat.com>. + + This file is part of the GNU OpenMP Library (libgomp). + + Libgomp is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + <http://www.gnu.org/licenses/>. */ + +/* This is the default POSIX 1003.1b implementation of a semaphore + synchronization mechanism for libgomp. This type is private to + the library. + + This is a bit heavy weight for what we need, in that we're not + interested in sem_wait as a cancelation point, but it's not too + bad for a default. */ + +#ifndef GOMP_SEM_H +#define GOMP_SEM_H 1 + +#ifdef HAVE_ATTRIBUTE_VISIBILITY +# pragma GCC visibility push(default) +#endif + +#include <semaphore.h> + +#ifdef HAVE_ATTRIBUTE_VISIBILITY +# pragma GCC visibility pop +#endif + +#ifdef HAVE_BROKEN_POSIX_SEMAPHORES +#include <pthread.h> + +struct gomp_sem +{ + pthread_mutex_t mutex; + pthread_cond_t cond; + int value; +}; + +typedef struct gomp_sem gomp_sem_t; + +extern void gomp_sem_init (gomp_sem_t *sem, int value); + +extern void gomp_sem_wait (gomp_sem_t *sem); + +extern void gomp_sem_post (gomp_sem_t *sem); + +extern void gomp_sem_destroy (gomp_sem_t *sem); + +#else /* HAVE_BROKEN_POSIX_SEMAPHORES */ + +typedef sem_t gomp_sem_t; + +static inline void gomp_sem_init (gomp_sem_t *sem, int value) +{ + sem_init (sem, 0, value); +} + +extern void gomp_sem_wait (gomp_sem_t *sem); + +static inline void gomp_sem_post (gomp_sem_t *sem) +{ + sem_post (sem); +} + +static inline void gomp_sem_destroy (gomp_sem_t *sem) +{ + sem_destroy (sem); +} +#endif /* doesn't HAVE_BROKEN_POSIX_SEMAPHORES */ +#endif /* GOMP_SEM_H */