/*
* Copyright (c) 2001-2004 Jakub Jermar
* Copyright (c) 2025 Jiří Zárevúcky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
/** @addtogroup kernel_sync
* @{
*/
/** @file
*/
#ifndef KERN_CONDVAR_H_
#define KERN_CONDVAR_H_
#include <stdint.h>
#include <synch/waitq.h>
#include <synch/mutex.h>
#include <synch/spinlock.h>
#include <abi/synch.h>
typedef struct {
waitq_t wq;
} condvar_t;
#define CONDVAR_INITIALIZER(name) (condvar_t) { \
.wq = WAITQ_INITIALIZER((name).wq), \
}
#define CONDVAR_INITIALIZE(name) \
condvar_t name = CONDVAR_INITIALIZER(name)
extern void condvar_initialize(condvar_t *cv);
extern void condvar_signal(condvar_t *cv);
extern void condvar_broadcast(condvar_t *cv);
extern errno_t __condvar_wait_mutex(condvar_t *cv, mutex_t *mtx);
extern errno_t __condvar_wait_spinlock(condvar_t *cv, spinlock_t *mtx);
extern errno_t __condvar_wait_irq_spinlock(condvar_t *cv, irq_spinlock_t *mtx);
extern errno_t __condvar_wait_timeout_mutex(condvar_t *cv, mutex_t *mtx, uint32_t usec);
extern errno_t __condvar_wait_timeout_spinlock(condvar_t *cv, spinlock_t *mtx, uint32_t usec);
extern errno_t __condvar_wait_timeout_irq_spinlock(condvar_t *cv, irq_spinlock_t *mtx, uint32_t usec);
#define condvar_wait(cv, mtx) (_Generic((mtx), \
mutex_t *: __condvar_wait_mutex, \
spinlock_t *: __condvar_wait_spinlock, \
irq_spinlock_t *: __condvar_wait_irq_spinlock \
)(cv, mtx))
#define condvar_wait_timeout(cv, mtx, usec) (_Generic((mtx), \
mutex_t *: __condvar_wait_timeout_mutex, \
spinlock_t *: __condvar_wait_timeout_spinlock, \
irq_spinlock_t *: __condvar_wait_timeout_irq_spinlock \
)(cv, mtx))
#endif
/** @}
*/