58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
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* File : semaphore.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2010-10-26 Bernard the first version
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*/
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#ifndef __POSIX_SEMAPHORE_H__
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#define __POSIX_SEMAPHORE_H__
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#include <rtthread.h>
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#include <pthread.h>
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struct posix_sem
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{
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/* reference count and unlinked */
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rt_uint16_t refcount;
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rt_uint8_t unlinked;
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rt_uint8_t unamed;
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/* RT-Thread semaphore */
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rt_sem_t sem;
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/* next posix semaphore */
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struct posix_sem* next;
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};
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typedef struct posix_sem sem_t;
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int sem_close(sem_t *sem);
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int sem_destroy(sem_t *sem);
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int sem_getvalue(sem_t *sem, int *sval);
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int sem_init(sem_t *sem, int pshared, unsigned int value);
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sem_t *sem_open(const char *name, int oflag, ...);
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int sem_post(sem_t *sem);
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int sem_timedwait(sem_t *sem, const struct timespec *abs_timeout);
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int sem_trywait(sem_t *sem);
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int sem_unlink(const char *name);
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int sem_wait(sem_t *sem);
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#endif
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