| 1 | /*
|
|---|
| 2 | * Copyright (c) 2001-2004 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 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 WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup sync
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #ifndef KERN_CONDVAR_H_
|
|---|
| 36 | #define KERN_CONDVAR_H_
|
|---|
| 37 |
|
|---|
| 38 | #include <typedefs.h>
|
|---|
| 39 | #include <synch/waitq.h>
|
|---|
| 40 | #include <synch/mutex.h>
|
|---|
| 41 | #include <synch/spinlock.h>
|
|---|
| 42 | #include <abi/synch.h>
|
|---|
| 43 |
|
|---|
| 44 | typedef struct {
|
|---|
| 45 | waitq_t wq;
|
|---|
| 46 | } condvar_t;
|
|---|
| 47 |
|
|---|
| 48 | #define condvar_wait(cv, mtx) \
|
|---|
| 49 | _condvar_wait_timeout((cv), (mtx), SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE)
|
|---|
| 50 | #define condvar_wait_timeout(cv, mtx, usec) \
|
|---|
| 51 | _condvar_wait_timeout((cv), (mtx), (usec), SYNCH_FLAGS_NONE)
|
|---|
| 52 |
|
|---|
| 53 | #ifdef CONFIG_SMP
|
|---|
| 54 | #define _condvar_wait_timeout_spinlock(cv, lock, usec, flags) \
|
|---|
| 55 | _condvar_wait_timeout_spinlock_impl((cv), (lock), (usec), (flags))
|
|---|
| 56 | #else
|
|---|
| 57 | #define _condvar_wait_timeout_spinlock(cv, lock, usec, flags) \
|
|---|
| 58 | _condvar_wait_timeout_spinlock_impl((cv), NULL, (usec), (flags))
|
|---|
| 59 | #endif
|
|---|
| 60 |
|
|---|
| 61 | extern void condvar_initialize(condvar_t *cv);
|
|---|
| 62 | extern void condvar_signal(condvar_t *cv);
|
|---|
| 63 | extern void condvar_broadcast(condvar_t *cv);
|
|---|
| 64 | extern int _condvar_wait_timeout(condvar_t *cv, mutex_t *mtx, uint32_t usec,
|
|---|
| 65 | int flags);
|
|---|
| 66 | extern int _condvar_wait_timeout_spinlock_impl(condvar_t *cv, spinlock_t *lock,
|
|---|
| 67 | uint32_t usec, int flags);
|
|---|
| 68 | extern int _condvar_wait_timeout_irq_spinlock(condvar_t *cv,
|
|---|
| 69 | irq_spinlock_t *irq_lock, uint32_t usec, int flags);
|
|---|
| 70 |
|
|---|
| 71 |
|
|---|
| 72 | #endif
|
|---|
| 73 |
|
|---|
| 74 | /** @}
|
|---|
| 75 | */
|
|---|
