0,0 → 1,57 |
/* |
* Copyright (C) 2001-2004 Jakub Jermar |
* 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. |
*/ |
|
#ifndef __WAITQ_H__ |
#define __WAITQ_H__ |
|
#include <arch/types.h> |
#include <typedefs.h> |
#include <synch/spinlock.h> |
#include <synch/synch.h> |
#include <list.h> |
|
#define WAKEUP_FIRST 0 |
#define WAKEUP_ALL 1 |
|
struct waitq { |
spinlock_t lock; |
int missed_wakeups; |
link_t head; |
}; |
|
#define waitq_sleep(wq) \ |
waitq_sleep_timeout((wq),SYNCH_NO_TIMEOUT,SYNCH_BLOCKING) |
|
extern void waitq_interrupted_sleep(void *data); |
|
extern void waitq_initialize(waitq_t *wq); |
extern int waitq_sleep_timeout(waitq_t *wq, __u32 usec, int nonblocking); |
extern void waitq_wakeup(waitq_t *wq, int all); |
extern void _waitq_wakeup_unsafe(waitq_t *wq, int all); |
|
#endif |