projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 2d21ac55 | 2 | * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. |
| 5d5c5d0d | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 1c79356b | 5 | * |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
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 | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b A |
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; | |
| 2d21ac55 | 44 | |
| 1c79356b A |
45 | /* this should go in limits.h> */ |
| 46 | #define SEM_VALUE_MAX 32767 | |
| 2d21ac55 | 47 | #define SEM_FAILED ((sem_t *)-1) |
| 1c79356b A |
48 | |
| 49 | #ifndef KERNEL | |
| 55e303ae A |
50 | #include <sys/cdefs.h> |
| 51 | ||
| 52 | __BEGIN_DECLS | |
| 1c79356b A |
53 | int sem_close(sem_t *); |
| 54 | int sem_destroy(sem_t *); | |
| 2d21ac55 | 55 | int sem_getvalue(sem_t * __restrict, int * __restrict); |
| 1c79356b A |
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 *); | |
| 2d21ac55 | 61 | int sem_wait(sem_t *) __DARWIN_ALIAS_C(sem_wait); |
| 55e303ae | 62 | __END_DECLS |
| 1c79356b | 63 | |
| 91447636 | 64 | #else /* KERNEL */ |
| 2d21ac55 A |
65 | void psem_lock_init(void); |
| 66 | void psem_cache_init(void) __attribute__((section("__TEXT, initcode"))); | |
| 91447636 | 67 | #endif /* KERNEL */ |
| 1c79356b A |
68 | |
| 69 | #endif /* _SYS_SEMAPHORE_H_ */ |