46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/* semaphore.h: POSIX semaphore interface
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Copyright 2001, 2003 Red Hat, Inc.
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Written by Robert Collins <rbtcollins@hotmail.com>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <sys/types.h>
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#ifndef _SEMAPHORE_H
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#define _SEMAPHORE_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#ifndef __INSIDE_CYGWIN__
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typedef struct __sem_t {char __dummy;} *sem_t;
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#endif
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#define SEM_FAILED 0
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#define SEM_VALUE_MAX 1147483648
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/* Semaphores */
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int sem_init (sem_t * sem, int pshared, unsigned int value);
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int sem_destroy (sem_t * sem);
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sem_t *sem_open (const char *name, int oflag, ...);
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int sem_close (sem_t *sem);
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int sem_wait (sem_t * sem);
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int sem_trywait (sem_t * sem);
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int sem_timedwait (sem_t * sem, const struct timespec *abstime);
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int sem_post (sem_t * sem);
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int sem_getvalue (sem_t * sem, int *sval);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SEMAPHORE_H */
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