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e9ce8d39 | 1 | /* |
9385eb3d | 2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. |
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3 | * |
4 | * @APPLE_LICENSE_HEADER_START@ | |
5 | * | |
734aad71 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. Please obtain a copy of the License at | |
10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
11 | * file. | |
12 | * | |
13 | * The Original Code and all software distributed under the License are | |
14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
e9ce8d39 A |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
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17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
18 | * Please see the License for the specific language governing rights and | |
19 | * limitations under the License. | |
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20 | * |
21 | * @APPLE_LICENSE_HEADER_END@ | |
22 | */ | |
23 | /* | |
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24 | * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>. |
25 | * All rights reserved. | |
e9ce8d39 A |
26 | * |
27 | * Redistribution and use in source and binary forms, with or without | |
28 | * modification, are permitted provided that the following conditions | |
29 | * are met: | |
30 | * 1. Redistributions of source code must retain the above copyright | |
31 | * notice, this list of conditions and the following disclaimer. | |
32 | * 2. Redistributions in binary form must reproduce the above copyright | |
33 | * notice, this list of conditions and the following disclaimer in the | |
34 | * documentation and/or other materials provided with the distribution. | |
35 | * 3. All advertising materials mentioning features or use of this software | |
36 | * must display the following acknowledgement: | |
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37 | * This product includes software developed by John Birrell. |
38 | * 4. Neither the name of the author nor the names of any co-contributors | |
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39 | * may be used to endorse or promote products derived from this software |
40 | * without specific prior written permission. | |
41 | * | |
9385eb3d | 42 | * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND |
e9ce8d39 A |
43 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
44 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
45 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
46 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
47 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
48 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
49 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
50 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
51 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
52 | * SUCH DAMAGE. | |
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53 | * |
54 | * $FreeBSD: src/lib/libc/include/spinlock.h,v 1.5 2002/03/21 22:47:52 obrien Exp $ | |
55 | * | |
56 | * Lock definitions used in both libc and libpthread. | |
57 | * | |
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58 | */ |
59 | ||
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60 | #ifndef _SPINLOCK_H_ |
61 | #define _SPINLOCK_H_ | |
62 | #ifdef __APPLE__ | |
63 | #include <pthread_spinlock.h> | |
64 | ||
65 | typedef pthread_lock_t spinlock_t; | |
66 | ||
67 | #define _SPINLOCK_INITIALIZER LOCK_INITIALIZER | |
e9ce8d39 | 68 | |
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69 | #define _SPINLOCK(_lck) \ |
70 | do { \ | |
71 | _DO_SPINLOCK_LOCK(_lck); \ | |
72 | } while (0) | |
e9ce8d39 | 73 | |
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74 | #define _SPINUNLOCK(_lck) \ |
75 | do { \ | |
76 | _DO_SPINLOCK_UNLOCK(_lck); \ | |
77 | } while (0) | |
78 | ||
79 | #else /* ! __APPLE__ */ | |
e9ce8d39 | 80 | #include <sys/cdefs.h> |
9385eb3d | 81 | #include <sys/types.h> |
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82 | |
83 | /* | |
9385eb3d | 84 | * Lock structure with room for debugging information. |
e9ce8d39 | 85 | */ |
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86 | typedef struct { |
87 | volatile long access_lock; | |
88 | volatile long lock_owner; | |
89 | volatile char *fname; | |
90 | volatile int lineno; | |
91 | } spinlock_t; | |
e9ce8d39 | 92 | |
9385eb3d | 93 | #define _SPINLOCK_INITIALIZER { 0, 0, 0, 0 } |
e9ce8d39 | 94 | |
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95 | #define _SPINUNLOCK(_lck) (_lck)->access_lock = 0 |
96 | #ifdef _LOCK_DEBUG | |
97 | #define _SPINLOCK(_lck) _spinlock_debug(_lck, __FILE__, __LINE__) | |
e9ce8d39 | 98 | #else |
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99 | #define _SPINLOCK(_lck) _spinlock(_lck) |
100 | #endif | |
101 | ||
102 | /* | |
103 | * Thread function prototype definitions: | |
104 | */ | |
105 | __BEGIN_DECLS | |
106 | long _atomic_lock(volatile long *); | |
107 | void _spinlock(spinlock_t *); | |
108 | void _spinlock_debug(spinlock_t *, char *, int); | |
109 | __END_DECLS | |
110 | ||
111 | #endif /* __APPLE__ */ | |
112 | ||
113 | #endif /* _SPINLOCK_H_ */ |