1 /* 2 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* @(#)semaphore.h 1.0 2/29/00 */ 29 30 31 32 /* 33 * semaphore.h - POSIX semaphores 34 * 35 * HISTORY 36 * 29-Feb-00 A.Ramesh at Apple 37 * Created for Mac OS X 38 */ 39 40 #ifndef _SYS_SEMAPHORE_H_ 41 #define _SYS_SEMAPHORE_H_ 42 43 typedef int sem_t; 44 45 /* this should go in limits.h> */ 46 #define SEM_VALUE_MAX 32767 47 #define SEM_FAILED ((sem_t *)-1) 48 49 #ifndef KERNEL 50 #include <sys/cdefs.h> 51 52 __BEGIN_DECLS 53 int sem_close(sem_t *); 54 int sem_destroy(sem_t *) __deprecated; 55 int sem_getvalue(sem_t * __restrict, int * __restrict) __deprecated; 56 int sem_init(sem_t *, int, unsigned int) __deprecated; 57 sem_t * sem_open(const char *, int, ...); 58 int sem_post(sem_t *); 59 int sem_trywait(sem_t *); 60 int sem_unlink(const char *); 61 int sem_wait(sem_t *) __DARWIN_ALIAS_C(sem_wait); 62 __END_DECLS 63 64 #else /* KERNEL */ 65 void psem_cache_init(void); 66 #endif /* KERNEL */ 67 68 #endif /* _SYS_SEMAPHORE_H_ */ 69