zig/lib/libc/include/generic-openbsd/sys/futex.h
2025-12-01 18:33:08 +01:00

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1.4 KiB
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/* $OpenBSD: futex.h,v 1.3 2025/05/07 00:39:09 dlg Exp $ */
/*
* Copyright (c) 2016 Martin Pieuchot
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _SYS_FUTEX_H_
#define _SYS_FUTEX_H_
#ifndef _KERNEL
#include <sys/cdefs.h>
__BEGIN_DECLS
int futex(volatile uint32_t *, int, int, const struct timespec *,
volatile uint32_t *);
__END_DECLS
#endif /* ! _KERNEL */
#define FUTEX_OP_MASK 0x007f
#define FUTEX_WAIT 1
#define FUTEX_WAKE 2
#define FUTEX_REQUEUE 3
#define FUTEX_FLAG_MASK 0xff80
#define FUTEX_PRIVATE_FLAG 0x0080
#define FUTEX_WAIT_PRIVATE (FUTEX_WAIT | FUTEX_PRIVATE_FLAG)
#define FUTEX_WAKE_PRIVATE (FUTEX_WAKE | FUTEX_PRIVATE_FLAG)
#define FUTEX_REQUEUE_PRIVATE (FUTEX_REQUEUE | FUTEX_PRIVATE_FLAG)
#endif /* _SYS_FUTEX_H_ */