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/*-
* 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>
struct umtx {
volatile unsigned long u_owner; /* Owner of the mutex. */
};
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 */
__uint32_t m_spare[4];
};
struct ucond {
volatile __uint32_t c_has_waiters; /* Has waiters in kernel */
__uint32_t c_flags; /* Flags of the condition variable */
__uint32_t c_spare[2]; /* 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;
};
#endif /* !_SYS__UMTX_H_ */
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