source: rtems-libbsd/freebsd/lib/libc/include/spinlock.h @ f41a394

55-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since f41a394 was 3d1e767, checked in by Sebastian Huber <sebastian.huber@…>, on Apr 27, 2016 at 8:25:22 AM

Directly use <sys/types.h> provided by Newlib

  • Property mode set to 100644
File size: 2.4 KB
Line 
1/*
2 * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 *
31 * Lock definitions used in both libc and libpthread.
32 *
33 */
34
35#ifndef _SPINLOCK_H_
36#define _SPINLOCK_H_
37#include <sys/cdefs.h>
38#include <sys/types.h>
39
40/*
41 * Lock structure with room for debugging information.
42 */
43struct _spinlock {
44        volatile long   access_lock;
45        volatile long   lock_owner;
46        volatile char   *fname;
47        volatile int    lineno;
48};
49typedef struct _spinlock spinlock_t;
50
51#define _SPINLOCK_INITIALIZER   { 0, 0, 0, 0 }
52
53#define _SPINUNLOCK(_lck)       _spinunlock(_lck);
54#ifdef  _LOCK_DEBUG
55#define _SPINLOCK(_lck)         _spinlock_debug(_lck, __FILE__, __LINE__)
56#else
57#define _SPINLOCK(_lck)         _spinlock(_lck)
58#endif
59
60/*
61 * Thread function prototype definitions:
62 */
63__BEGIN_DECLS
64long    _atomic_lock(volatile long *);
65void    _spinlock(spinlock_t *);
66void    _spinunlock(spinlock_t *);
67void    _spinlock_debug(spinlock_t *, char *, int);
68__END_DECLS
69
70#endif /* _SPINLOCK_H_ */
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