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authord <>1998-12-21 07:36:58 +0000
committerd <>1998-12-21 07:36:58 +0000
commit6dc7513a633fd54f42172958ea7fc81510efc8dd (patch)
treefed46204fc86fde19cb2536891efb590baf0d1c4 /src
parent99b122da0763e128d032140e009efd47e0f12bec (diff)
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md spinlock
Diffstat (limited to 'src')
-rw-r--r--src/lib/libc/include/spinlock.h74
1 files changed, 0 insertions, 74 deletions
diff --git a/src/lib/libc/include/spinlock.h b/src/lib/libc/include/spinlock.h
deleted file mode 100644
index 31e7744f0a..0000000000
--- a/src/lib/libc/include/spinlock.h
+++ /dev/null
@@ -1,74 +0,0 @@
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by John Birrell.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: spinlock.h,v 1.2 1998/12/18 05:59:17 d Exp $
33 * $OpenBSD: spinlock.h,v 1.2 1998/12/18 05:59:17 d Exp $
34 *
35 * Lock definitions used in both libc and libpthread.
36 *
37 */
38
39#ifndef _SPINLOCK_H_
40#define _SPINLOCK_H_
41#include <sys/cdefs.h>
42#include <sys/types.h>
43
44/*
45 * Lock structure with room for debugging information.
46 */
47typedef struct {
48 volatile register_t access_lock;
49 volatile long lock_owner;
50 volatile const char * fname;
51 volatile int lineno;
52} spinlock_t;
53
54#define _SPINLOCK_INITIALIZER { 0, 0, 0, 0 }
55
56#define _SPINUNLOCK(_lck) (_lck)->access_lock = 0
57#ifdef _LOCK_DEBUG
58#define _SPINLOCK(_lck) _spinlock_debug(_lck, __FILE__, __LINE__)
59#else
60#define _SPINLOCK(_lck) _spinlock(_lck)
61#endif
62
63/*
64 * Thread function prototype definitions:
65 */
66__BEGIN_DECLS
67register_t _atomic_lock __P((volatile register_t *));
68int _atomic_is_locked __P((volatile register_t *));
69register_t _thread_slow_atomic_lock __P((volatile register_t *));
70void _spinlock __P((spinlock_t *));
71void _spinlock_debug __P((spinlock_t *, const char *, int));
72__END_DECLS
73
74#endif /* _SPINLOCK_H_ */