xref: /openbsd/lib/libc/hidden/machine/spinlock.h (revision d415bd75)
1 /*	$OpenBSD: spinlock.h,v 1.1 2017/09/05 02:40:54 guenther Exp $	*/
2 /*
3  * Copyright (c) 2017 Philip Guenther <guenther@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #ifndef	_LIBC_MACHINE_SPINLOCK_H_
19 #define	_LIBC_MACHINE_SPINLOCK_H_
20 
21 #include_next <machine/spinlock.h>
22 
23 __BEGIN_HIDDEN_DECLS
24 int	_atomic_lock(volatile _atomic_lock_t *);
25 __END_HIDDEN_DECLS
26 
27 #endif /* !_LIBC_MACHINE_SPINLOCK_H_ */
28