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Annotation of src/include/semaphore.h, Revision 1.1

1.1     ! guenther    1: /*     $OpenBSD: semaphore.h,v 1.9 2013/03/26 14:38:08 deraadt Exp $   */
        !             2:
        !             3: /* semaphore.h: POSIX 1003.1b semaphores */
        !             4:
        !             5: /*-
        !             6:  * Copyright (c) 1996, 1997
        !             7:  *     HD Associates, Inc.  All rights reserved.
        !             8:  *
        !             9:  * Redistribution and use in source and binary forms, with or without
        !            10:  * modification, are permitted provided that the following conditions
        !            11:  * are met:
        !            12:  * 1. Redistributions of source code must retain the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer.
        !            14:  * 2. Redistributions in binary form must reproduce the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer in the
        !            16:  *    documentation and/or other materials provided with the distribution.
        !            17:  * 3. All advertising materials mentioning features or use of this software
        !            18:  *    must display the following acknowledgement:
        !            19:  *     This product includes software developed by HD Associates, Inc
        !            20:  * 4. Neither the name of the author nor the names of any co-contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  */
        !            36:
        !            37: #ifndef _SEMAPHORE_H_
        !            38: #define _SEMAPHORE_H_
        !            39:
        !            40: #include <sys/cdefs.h>
        !            41:
        !            42: /* Opaque type definition. */
        !            43: struct __sem;
        !            44: typedef struct __sem *sem_t;
        !            45: struct timespec;
        !            46:
        !            47: #define SEM_FAILED      ((sem_t *)0)
        !            48:
        !            49: __BEGIN_DECLS
        !            50: int    sem_init(sem_t *, int, unsigned int);
        !            51: int    sem_destroy(sem_t *);
        !            52: sem_t  *sem_open(const char *, int, ...);
        !            53: int    sem_close(sem_t *);
        !            54: int    sem_unlink(const char *);
        !            55: int    sem_wait(sem_t *);
        !            56: int    sem_timedwait(sem_t * __restrict, const struct timespec * __restrict);
        !            57: int    sem_trywait(sem_t *);
        !            58: int    sem_post(sem_t *);
        !            59: int    sem_getvalue(sem_t * __restrict, int * __restrict);
        !            60: __END_DECLS
        !            61:
        !            62: #endif /* _SEMAPHORE_H_ */