1 | /* |
2 | * Copyright (c) 2000-2008 Apple 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 | |
29 | #ifndef _MACH_SEMAPHORE_H_ |
30 | #define _MACH_SEMAPHORE_H_ |
31 | |
32 | #include <mach/port.h> |
33 | #include <mach/mach_types.h> |
34 | #include <mach/kern_return.h> |
35 | #include <mach/sync_policy.h> |
36 | |
37 | /* |
38 | * Forward Declarations |
39 | * |
40 | * The semaphore creation and deallocation routines are |
41 | * defined with the Mach task APIs in <mach/task.h>. |
42 | * |
43 | * kern_return_t semaphore_create(task_t task, |
44 | * semaphore_t *new_semaphore, |
45 | * sync_policy_t policy, |
46 | * int value); |
47 | * |
48 | * kern_return_t semaphore_destroy(task_t task, |
49 | * semaphore_t semaphore); |
50 | */ |
51 | |
52 | #include <sys/cdefs.h> |
53 | __BEGIN_DECLS |
54 | |
55 | extern kern_return_t semaphore_signal(semaphore_t semaphore); |
56 | extern kern_return_t semaphore_signal_all(semaphore_t semaphore); |
57 | |
58 | extern kern_return_t semaphore_wait(semaphore_t semaphore); |
59 | |
60 | #ifdef KERNEL |
61 | |
62 | #ifdef __LP64__ |
63 | |
64 | #ifdef KERNEL_PRIVATE |
65 | |
66 | extern kern_return_t semaphore_timedwait(semaphore_t semaphore, |
67 | mach_timespec_t wait_time); |
68 | |
69 | #endif /* KERNEL_PRIVATE */ |
70 | |
71 | #else /* __LP64__ */ |
72 | |
73 | extern kern_return_t semaphore_timedwait(semaphore_t semaphore, |
74 | mach_timespec_t wait_time); |
75 | |
76 | #endif /* __LP64__ */ |
77 | |
78 | extern kern_return_t semaphore_wait_deadline(semaphore_t semaphore, |
79 | uint64_t deadline); |
80 | extern kern_return_t semaphore_wait_noblock(semaphore_t semaphore); |
81 | |
82 | #ifdef XNU_KERNEL_PRIVATE |
83 | |
84 | extern kern_return_t semaphore_wait_signal(semaphore_t wait_semaphore, |
85 | semaphore_t signal_semaphore); |
86 | |
87 | extern kern_return_t semaphore_timedwait_signal(semaphore_t wait_semaphore, |
88 | semaphore_t signal_semaphore, |
89 | mach_timespec_t wait_time); |
90 | |
91 | extern kern_return_t semaphore_signal_thread(semaphore_t semaphore, |
92 | thread_t thread); |
93 | |
94 | #endif /* XNU_KERNEL_PRIVATE */ |
95 | |
96 | #else /* KERNEL */ |
97 | |
98 | extern kern_return_t semaphore_timedwait(semaphore_t semaphore, |
99 | mach_timespec_t wait_time); |
100 | |
101 | extern kern_return_t semaphore_timedwait_signal(semaphore_t wait_semaphore, |
102 | semaphore_t signal_semaphore, |
103 | mach_timespec_t wait_time); |
104 | |
105 | extern kern_return_t semaphore_wait_signal(semaphore_t wait_semaphore, |
106 | semaphore_t signal_semaphore); |
107 | |
108 | extern kern_return_t semaphore_signal_thread(semaphore_t semaphore, |
109 | thread_t thread); |
110 | |
111 | #endif /* KERNEL */ |
112 | |
113 | __END_DECLS |
114 | |
115 | #ifdef PRIVATE |
116 | |
117 | #define SEMAPHORE_OPTION_NONE 0x00000000 |
118 | |
119 | #define SEMAPHORE_SIGNAL 0x00000001 |
120 | #define SEMAPHORE_WAIT 0x00000002 |
121 | #define SEMAPHORE_WAIT_ON_SIGNAL 0x00000008 |
122 | |
123 | #define SEMAPHORE_SIGNAL_TIMEOUT 0x00000010 |
124 | #define SEMAPHORE_SIGNAL_ALL 0x00000020 |
125 | #define SEMAPHORE_SIGNAL_INTERRUPT 0x00000040 /* libmach implements */ |
126 | #define SEMAPHORE_SIGNAL_PREPOST 0x00000080 |
127 | |
128 | #define SEMAPHORE_WAIT_TIMEOUT 0x00000100 |
129 | #define SEMAPHORE_WAIT_INTERRUPT 0x00000400 /* libmach implements */ |
130 | |
131 | #define SEMAPHORE_TIMEOUT_NOBLOCK 0x00100000 |
132 | #define SEMAPHORE_TIMEOUT_RELATIVE 0x00200000 |
133 | |
134 | #define SEMAPHORE_USE_SAVED_RESULT 0x01000000 /* internal use only */ |
135 | #define SEMAPHORE_SIGNAL_RELEASE 0x02000000 /* internal use only */ |
136 | #define SEMAPHORE_THREAD_HANDOFF 0x04000000 |
137 | |
138 | #endif /* PRIVATE */ |
139 | |
140 | #endif /* _MACH_SEMAPHORE_H_ */ |
141 | |