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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SEMAPHORE_H
#define _SEMAPHORE_H
#include <sys/cdefs.h>
__BEGIN_DECLS
typedef struct {
volatile unsigned int count;
#ifdef __LP64__
int __reserved[3];
#endif
} sem_t;
#define SEM_FAILED NULL
extern int sem_init(sem_t *sem, int pshared, unsigned int value);
extern int sem_close(sem_t *);
extern int sem_destroy(sem_t *);
extern int sem_getvalue(sem_t *, int *);
extern int sem_init(sem_t *, int, unsigned int);
extern sem_t *sem_open(const char *, int, ...);
extern int sem_post(sem_t *);
extern int sem_trywait(sem_t *);
extern int sem_unlink(const char *);
extern int sem_wait(sem_t *);
struct timespec;
extern int sem_timedwait(sem_t *sem, const struct timespec *abs_timeout);
__END_DECLS
#endif /* _SEMAPHORE_H */
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