projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 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 | #define SEMAPHORE_OPTION_NONE 0x00000000 | |
| 32 | ||
| 33 | #define SEMAPHORE_SIGNAL 0x00000001 | |
| 34 | #define SEMAPHORE_WAIT 0x00000002 | |
| 35 | #define SEMAPHORE_WAIT_ON_SIGNAL 0x00000008 | |
| 36 | ||
| 37 | #define SEMAPHORE_SIGNAL_TIMEOUT 0x00000010 | |
| 38 | #define SEMAPHORE_SIGNAL_ALL 0x00000020 | |
| 39 | #define SEMAPHORE_SIGNAL_INTERRUPT 0x00000040 /* libmach implements */ | |
| 40 | #define SEMAPHORE_SIGNAL_PREPOST 0x00000080 | |
| 41 | ||
| 42 | #define SEMAPHORE_WAIT_TIMEOUT 0x00000100 | |
| 43 | #define SEMAPHORE_WAIT_INTERRUPT 0x00000400 /* libmach implements */ | |
| 44 | ||
| 45 | #define SEMAPHORE_TIMEOUT_NOBLOCK 0x00100000 | |
| 46 | #define SEMAPHORE_TIMEOUT_RELATIVE 0x00200000 | |
| 47 | ||
| 48 | #define SEMAPHORE_USE_SAVED_RESULT 0x01000000 /* internal use only */ | |
| 49 | #define SEMAPHORE_SIGNAL_RELEASE 0x02000000 /* internal use only */ | |
| 50 | ||
| 51 | ||
| 52 | /* | |
| 53 | * Forward Declarations | |
| 54 | * | |
| 55 | * The semaphore creation and deallocation routines are | |
| 56 | * defined with the Mach task APIs in <mach/task.h>. | |
| 57 | * | |
| 58 | * kern_return_t semaphore_create(task_t task, | |
| 59 | * semaphore_t *new_semaphore, | |
| 60 | * sync_policy_t policy, | |
| 61 | * int value); | |
| 62 | * | |
| 63 | * kern_return_t semaphore_destroy(task_t task, | |
| 64 | * semaphore_t semaphore); | |
| 65 | */ | |
| 66 | ||
| 67 | extern kern_return_t semaphore_signal (semaphore_t semaphore); | |
| 68 | extern kern_return_t semaphore_signal_all (semaphore_t semaphore); | |
| 69 | extern kern_return_t semaphore_signal_thread (semaphore_t semaphore, | |
| 70 | thread_act_t thread_act); | |
| 71 | ||
| 72 | extern kern_return_t semaphore_wait (semaphore_t semaphore); | |
| 73 | extern kern_return_t semaphore_timedwait (semaphore_t semaphore, | |
| 74 | mach_timespec_t wait_time); | |
| 75 | ||
| 76 | extern kern_return_t semaphore_wait_signal (semaphore_t wait_semaphore, | |
| 77 | semaphore_t signal_semaphore); | |
| 78 | ||
| 79 | extern kern_return_t semaphore_timedwait_signal(semaphore_t wait_semaphore, | |
| 80 | semaphore_t signal_semaphore, | |
| 81 | mach_timespec_t wait_time); | |
| 82 | ||
| 83 | extern kern_return_t semaphore_operator (int options, | |
| 84 | semaphore_t wait_semaphore, | |
| 85 | semaphore_t signal_semaphore, | |
| 86 | thread_act_t thread, | |
| 87 | mach_timespec_t wait_time); | |
| 88 | ||
| 89 | #endif /* _MACH_SEMAPHORE_H_ */ |