freebsd-skq/sys/sys/_umtx.h
Pedro F. Giffuni c4e20cad00 sys/sys: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:01:59 +00:00

82 lines
2.5 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2010, David Xu <davidxu@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef _SYS__UMTX_H_
#define _SYS__UMTX_H_
#include <sys/_types.h>
#include <sys/_timespec.h>
struct umutex {
volatile __lwpid_t m_owner; /* Owner of the mutex */
__uint32_t m_flags; /* Flags of the mutex */
__uint32_t m_ceilings[2]; /* Priority protect ceiling */
__uintptr_t m_rb_lnk; /* Robust linkage */
#ifndef __LP64__
__uint32_t m_pad;
#endif
__uint32_t m_spare[2];
};
struct ucond {
volatile __uint32_t c_has_waiters; /* Has waiters in kernel */
__uint32_t c_flags; /* Flags of the condition variable */
__uint32_t c_clockid; /* Clock id */
__uint32_t c_spare[1]; /* Spare space */
};
struct urwlock {
volatile __int32_t rw_state;
__uint32_t rw_flags;
__uint32_t rw_blocked_readers;
__uint32_t rw_blocked_writers;
__uint32_t rw_spare[4];
};
struct _usem {
volatile __uint32_t _has_waiters;
volatile __uint32_t _count;
__uint32_t _flags;
};
struct _usem2 {
volatile __uint32_t _count; /* Waiters flag in high bit. */
__uint32_t _flags;
};
struct _umtx_time {
struct timespec _timeout;
__uint32_t _flags;
__uint32_t _clockid;
};
#endif /* !_SYS__UMTX_H_ */