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Annotation of sys/arch/m88k/include/mutex.h, Revision 1.1

1.1     ! nbrk        1: #ifndef _M88K_MUTEX_H_
        !             2: #define _M88K_MUTEX_H_
        !             3: /*     $OpenBSD: mutex.h,v 1.1 2005/12/03 19:01:14 miod Exp $  */
        !             4:
        !             5: /*
        !             6:  * Copyright (c) 2005, Miodrag Vallat.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            18:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            19:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
        !            20:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
        !            21:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            22:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            23:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            25:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
        !            26:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            27:  * POSSIBILITY OF SUCH DAMAGE.
        !            28:  */
        !            29:
        !            30: struct mutex {
        !            31:        volatile int mtx_lock;  /* mutex.S relies upon this field being first */
        !            32:        int mtx_wantipl;
        !            33:        int mtx_oldipl;
        !            34:        void *mtx_cpu;
        !            35: };
        !            36:
        !            37: #define        MUTEX_INITIALIZER(ipl)          { 0, (ipl), IPL_NONE, NULL }
        !            38:
        !            39: #ifdef DIAGNOSTIC
        !            40:
        !            41: #define        MUTEX_ASSERT_LOCKED(mtx)                                        \
        !            42: do {                                                                   \
        !            43:        if ((mtx)->mtx_lock == 0 || (mtx)->mtx_cpu != curcpu())         \
        !            44:                panic("mutex %p not held in %s", (mtx), __func__);      \
        !            45: } while (0)
        !            46:
        !            47: #define        MUTEX_ASSERT_UNLOCKED(mtx)                                      \
        !            48: do {                                                                   \
        !            49:        if ((mtx)->mtx_lock != 0)                                       \
        !            50:                panic("mutex %p held in %s", (mtx), __func__);          \
        !            51: } while (0)
        !            52:
        !            53: #else
        !            54:
        !            55: #define        MUTEX_ASSERT_LOCKED(mtx)        do { /* nothing */ } while (0)
        !            56: #define        MUTEX_ASSERT_UNLOCKED(mtx)      do { /* nothing */ } while (0)
        !            57:
        !            58: #endif
        !            59:
        !            60: #define MUTEX_OLDIPL(mtx)      (mtx)->mtx_oldipl
        !            61:
        !            62: #endif /* _M88K_MUTEX_H_ */