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1 jermar 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#ifndef __CONDVAR_H__
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#define __CONDVAR_H__
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#include <arch/types.h>
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#include <synch/waitq.h>
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#include <typedefs.h>
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#include <synch/synch.h>
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struct condvar {
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    waitq_t wq;
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};
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#define condvar_wait(cv,mtx) \
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    _condvar_wait_timeout((cv),(mtx),SYNCH_NO_TIMEOUT,SYNCH_BLOCKING)
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#define condvar_trywait(cv,mtx) \
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    _condvar_wait_timeout((cv),(mtx),SYNCH_NO_TIMEOUT,SYNCH_NON_BLOCKING)
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#define condvar_wait_timeout(cv,mtx,usec) \
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    _condvar_wait_timeout((cv),(mtx),(usec),SYNCH_NON_BLOCKING)
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extern void condvar_initialize(condvar_t *cv);
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extern void condvar_signal(condvar_t *cv);
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extern void condvar_broadcast(condvar_t *cv);
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extern int _condvar_wait_timeout(condvar_t *cv, mutex_t *mtx, __u32 usec, int trywait);
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#endif