| | 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 *); |
| | 55 | int sem_getvalue(sem_t * __restrict, int * __restrict); |
| | 56 | int sem_init(sem_t *, int, unsigned int); |
| | 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_lock_init(void); |
| | 66 | void psem_cache_init(void) __attribute__((section("__TEXT, initcode"))); |
| | 67 | #endif /* KERNEL */ |
| | 68 | |
| | 69 | #endif /* _SYS_SEMAPHORE_H_ */ |
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