| | 1 | /* |
| | 2 | * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * The contents of this file constitute Original Code as defined in and |
| | 7 | * are subject to the Apple Public Source License Version 1.1 (the |
| | 8 | * "License"). You may not use this file except in compliance with the |
| | 9 | * License. Please obtain a copy of the License at |
| | 10 | * http://www.apple.com/publicsource and read it before using this file. |
| | 11 | * |
| | 12 | * This Original Code and all software distributed under the License are |
| | 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the |
| | 17 | * License for the specific language governing rights and limitations |
| | 18 | * under the License. |
| | 19 | * |
| | 20 | * @APPLE_LICENSE_HEADER_END@ |
| | 21 | */ |
| | 22 | |
| | 23 | #ifndef _MACH_SEMAPHORE_H_ |
| | 24 | #define _MACH_SEMAPHORE_H_ |
| | 25 | |
| | 26 | #include <mach/port.h> |
| | 27 | #include <mach/mach_types.h> |
| | 28 | #include <mach/kern_return.h> |
| | 29 | #include <mach/sync_policy.h> |
| | 30 | |
| | 31 | /* |
| | 32 | * Forward Declarations |
| | 33 | * |
| | 34 | * The semaphore creation and deallocation routines are |
| | 35 | * defined with the Mach task APIs in <mach/task.h>. |
| | 36 | * |
| | 37 | * kern_return_t semaphore_create(task_t task, |
| | 38 | * semaphore_t *new_semaphore, |
| | 39 | * sync_policy_t policy, |
| | 40 | * int value); |
| | 41 | * |
| | 42 | * kern_return_t semaphore_destroy(task_t task, |
| | 43 | * semaphore_t semaphore); |
| | 44 | */ |
| | 45 | |
| | 46 | #include <sys/cdefs.h> |
| | 47 | __BEGIN_DECLS |
| | 48 | |
| | 49 | extern kern_return_t semaphore_signal (semaphore_t semaphore); |
| | 50 | extern kern_return_t semaphore_signal_all (semaphore_t semaphore); |
| | 51 | extern kern_return_t semaphore_signal_thread (semaphore_t semaphore, |
| | 52 | thread_t thread); |
| | 53 | |
| | 54 | extern kern_return_t semaphore_wait (semaphore_t semaphore); |
| | 55 | extern kern_return_t semaphore_timedwait (semaphore_t semaphore, |
| | 56 | mach_timespec_t wait_time); |
| | 57 | |
| | 58 | extern kern_return_t semaphore_wait_signal (semaphore_t wait_semaphore, |
| | 59 | semaphore_t signal_semaphore); |
| | 60 | |
| | 61 | extern kern_return_t semaphore_timedwait_signal(semaphore_t wait_semaphore, |
| | 62 | semaphore_t signal_semaphore, |
| | 63 | mach_timespec_t wait_time); |
| | 64 | __END_DECLS |
| | 65 | |
| | 66 | #ifdef PRIVATE |
| | 67 | |
| | 68 | #define SEMAPHORE_OPTION_NONE 0x00000000 |
| | 69 | |
| | 70 | #define SEMAPHORE_SIGNAL 0x00000001 |
| | 71 | #define SEMAPHORE_WAIT 0x00000002 |
| | 72 | #define SEMAPHORE_WAIT_ON_SIGNAL 0x00000008 |
| | 73 | |
| | 74 | #define SEMAPHORE_SIGNAL_TIMEOUT 0x00000010 |
| | 75 | #define SEMAPHORE_SIGNAL_ALL 0x00000020 |
| | 76 | #define SEMAPHORE_SIGNAL_INTERRUPT 0x00000040 /* libmach implements */ |
| | 77 | #define SEMAPHORE_SIGNAL_PREPOST 0x00000080 |
| | 78 | |
| | 79 | #define SEMAPHORE_WAIT_TIMEOUT 0x00000100 |
| | 80 | #define SEMAPHORE_WAIT_INTERRUPT 0x00000400 /* libmach implements */ |
| | 81 | |
| | 82 | #define SEMAPHORE_TIMEOUT_NOBLOCK 0x00100000 |
| | 83 | #define SEMAPHORE_TIMEOUT_RELATIVE 0x00200000 |
| | 84 | |
| | 85 | #define SEMAPHORE_USE_SAVED_RESULT 0x01000000 /* internal use only */ |
| | 86 | #define SEMAPHORE_SIGNAL_RELEASE 0x02000000 /* internal use only */ |
| | 87 | |
| | 88 | #endif /* PRIVATE */ |
| | 89 | |
| | 90 | #endif /* _MACH_SEMAPHORE_H_ */ |
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