113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/*-
|
|
* Copyright (c) 2010 Isilon Systems, Inc.
|
|
* Copyright (c) 2010 iX Systems, Inc.
|
|
* Copyright (c) 2010 Panasas, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* 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 unmodified, 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.
|
|
*/
|
|
#ifndef _LINUX_WAIT_H_
|
|
#define _LINUX_WAIT_H_
|
|
|
|
#include <linux/spinlock.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/list.h>
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sleepqueue.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/proc.h>
|
|
|
|
struct __wait_queue_head {
|
|
unsigned int wchan;
|
|
};
|
|
typedef struct __wait_queue_head wait_queue_head_t;
|
|
|
|
#define init_waitqueue_head(x)
|
|
|
|
static inline void
|
|
__wake_up(struct __wait_queue_head *q, int all)
|
|
{
|
|
int wakeup_swapper;
|
|
void *c;
|
|
|
|
c = &q->wchan;
|
|
sleepq_lock(c);
|
|
if (all)
|
|
wakeup_swapper = sleepq_broadcast(c, SLEEPQ_SLEEP, 0, 0);
|
|
else
|
|
wakeup_swapper = sleepq_signal(c, SLEEPQ_SLEEP, 0, 0);
|
|
sleepq_release(c);
|
|
if (wakeup_swapper)
|
|
kick_proc0();
|
|
}
|
|
|
|
#define wake_up(q) __wake_up(q, 0)
|
|
#define wake_up_nr(q, nr) __wake_up(q, 1)
|
|
#define wake_up_all(q) __wake_up(q, 1)
|
|
#define wake_up_interruptible(q) __wake_up(q, 0)
|
|
#define wake_up_interruptible_nr(q, nr) __wake_up(q, 1)
|
|
#define wake_up_interruptible_all(q, nr) __wake_up(q, 1)
|
|
|
|
#define wait_event(q, cond) \
|
|
do { \
|
|
void *c = &(q).wchan; \
|
|
if (!(cond)) { \
|
|
for (;;) { \
|
|
sleepq_lock(c); \
|
|
if (cond) { \
|
|
sleepq_release(c); \
|
|
break; \
|
|
} \
|
|
sleepq_add(c, NULL, "completion", SLEEPQ_SLEEP, 0); \
|
|
sleepq_wait(c, 0); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
#define wait_event_interruptible(q, cond) \
|
|
({ \
|
|
void *c = &(q).wchan; \
|
|
int _error; \
|
|
\
|
|
_error = 0; \
|
|
if (!(cond)) { \
|
|
for (; _error == 0;) { \
|
|
sleepq_lock(c); \
|
|
if (cond) { \
|
|
sleepq_release(c); \
|
|
break; \
|
|
} \
|
|
sleepq_add(c, NULL, "completion", \
|
|
SLEEPQ_SLEEP | SLEEPQ_INTERRUPTIBLE, 0); \
|
|
if (sleepq_wait_sig(c, 0)) \
|
|
_error = -ERESTARTSYS; \
|
|
} \
|
|
} \
|
|
-_error; \
|
|
})
|
|
|
|
#define DEFINE_WAIT(x)
|
|
|
|
#endif /* _LINUX_WAIT_H_ */
|