1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22/* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#ifndef _SEMAPHORE_H 28#define _SEMAPHORE_H 29 30#pragma ident "%Z%%M% %I% %E% SMI" 31 32#include <sys/feature_tests.h> 33 34#include <sys/types.h> 35#include <sys/fcntl.h> 36 37#ifdef __cplusplus 38extern "C" { 39#endif 40 41typedef struct { 42 /* this structure must be the same as sema_t in <synch.h> */ 43 uint32_t sem_count; /* semaphore count */ 44 uint16_t sem_type; 45 uint16_t sem_magic; 46 upad64_t sem_pad1[3]; /* reserved for a mutex_t */ 47 upad64_t sem_pad2[2]; /* reserved for a cond_t */ 48} sem_t; 49 50#define SEM_FAILED ((sem_t *)(-1)) 51 52/* 53 * function prototypes 54 */ 55#if defined(__STDC__) 56int sem_init(sem_t *, int, unsigned int); 57int sem_destroy(sem_t *); 58sem_t *sem_open(const char *, int, ...); 59int sem_close(sem_t *); 60int sem_unlink(const char *); 61int sem_wait(sem_t *); 62/* 63 * Inclusion of <time.h> breaks X/Open and POSIX namespace. 64 * The timespec structure while allowed in XPG6 and POSIX.1003d-1999, 65 * is not permitted in prior POSIX or X/Open specifications even 66 * though functions beginning with sem_* are allowed. 67 */ 68#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 69struct timespec; 70int sem_timedwait(sem_t *_RESTRICT_KYWD, 71 const struct timespec *_RESTRICT_KYWD); 72int sem_reltimedwait_np(sem_t *_RESTRICT_KYWD, 73 const struct timespec *_RESTRICT_KYWD); 74#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */ 75int sem_trywait(sem_t *); 76int sem_post(sem_t *); 77int sem_getvalue(sem_t *_RESTRICT_KYWD, int *_RESTRICT_KYWD); 78#else 79int sem_init(); 80int sem_destroy(); 81sem_t *sem_open(); 82int sem_close(); 83int sem_unlink(); 84int sem_wait(); 85#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 86int sem_timedwait(); 87int sem_reltimedwait_np(); 88#endif /* #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */ 89int sem_trywait(); 90int sem_post(); 91int sem_getvalue(); 92#endif /* __STDC__ */ 93 94#ifdef __cplusplus 95} 96#endif 97 98#endif /* _SEMAPHORE_H */ 99