44 lines
987 B
C
44 lines
987 B
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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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 <rtdef.h>
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#include <sys/time.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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