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#ifndef _M88K_MUTEX_H_
#define _M88K_MUTEX_H_
/* $OpenBSD: mutex.h,v 1.1 2005/12/03 19:01:14 miod Exp $ */
/*
* Copyright (c) 2005, Miodrag Vallat.
*
* 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, 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.
*/
struct mutex {
volatile int mtx_lock; /* mutex.S relies upon this field being first */
int mtx_wantipl;
int mtx_oldipl;
void *mtx_cpu;
};
#define MUTEX_INITIALIZER(ipl) { 0, (ipl), IPL_NONE, NULL }
#ifdef DIAGNOSTIC
#define MUTEX_ASSERT_LOCKED(mtx) \
do { \
if ((mtx)->mtx_lock == 0 || (mtx)->mtx_cpu != curcpu()) \
panic("mutex %p not held in %s", (mtx), __func__); \
} while (0)
#define MUTEX_ASSERT_UNLOCKED(mtx) \
do { \
if ((mtx)->mtx_lock != 0) \
panic("mutex %p held in %s", (mtx), __func__); \
} while (0)
#else
#define MUTEX_ASSERT_LOCKED(mtx) do { /* nothing */ } while (0)
#define MUTEX_ASSERT_UNLOCKED(mtx) do { /* nothing */ } while (0)
#endif
#define MUTEX_OLDIPL(mtx) (mtx)->mtx_oldipl
#endif /* _M88K_MUTEX_H_ */
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