Annotation of sys/arch/m88k/include/mutex.h, Revision 1.1.1.1
1.1 nbrk 1: #ifndef _M88K_MUTEX_H_
2: #define _M88K_MUTEX_H_
3: /* $OpenBSD: mutex.h,v 1.1 2005/12/03 19:01:14 miod Exp $ */
4:
5: /*
6: * Copyright (c) 2005, Miodrag Vallat.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
21: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27: * POSSIBILITY OF SUCH DAMAGE.
28: */
29:
30: struct mutex {
31: volatile int mtx_lock; /* mutex.S relies upon this field being first */
32: int mtx_wantipl;
33: int mtx_oldipl;
34: void *mtx_cpu;
35: };
36:
37: #define MUTEX_INITIALIZER(ipl) { 0, (ipl), IPL_NONE, NULL }
38:
39: #ifdef DIAGNOSTIC
40:
41: #define MUTEX_ASSERT_LOCKED(mtx) \
42: do { \
43: if ((mtx)->mtx_lock == 0 || (mtx)->mtx_cpu != curcpu()) \
44: panic("mutex %p not held in %s", (mtx), __func__); \
45: } while (0)
46:
47: #define MUTEX_ASSERT_UNLOCKED(mtx) \
48: do { \
49: if ((mtx)->mtx_lock != 0) \
50: panic("mutex %p held in %s", (mtx), __func__); \
51: } while (0)
52:
53: #else
54:
55: #define MUTEX_ASSERT_LOCKED(mtx) do { /* nothing */ } while (0)
56: #define MUTEX_ASSERT_UNLOCKED(mtx) do { /* nothing */ } while (0)
57:
58: #endif
59:
60: #define MUTEX_OLDIPL(mtx) (mtx)->mtx_oldipl
61:
62: #endif /* _M88K_MUTEX_H_ */
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