| 0,0 → 1,76 |
|---|
| /* |
| * 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. |
| */ |
| |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #ifndef __WAITQ_H__ |
| #define __WAITQ_H__ |
| |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <synch/spinlock.h> |
| #include <synch/synch.h> |
| #include <adt/list.h> |
| |
| #define WAKEUP_FIRST 0 |
| #define WAKEUP_ALL 1 |
| |
| /** Wait queue structure. */ |
| struct waitq { |
| |
| /** Lock protecting wait queue structure. |
| * |
| * Must be acquired before T.lock for each T of type thread_t. |
| */ |
| SPINLOCK_DECLARE(lock); |
| |
| int missed_wakeups; /**< Number of waitq_wakeup() calls that didn't find a thread to wake up. */ |
| link_t head; /**< List of sleeping threads for wich there was no missed_wakeup. */ |
| }; |
| |
| #define waitq_sleep(wq) \ |
| waitq_sleep_timeout((wq),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| |
| extern void waitq_initialize(waitq_t *wq); |
| extern int waitq_sleep_timeout(waitq_t *wq, uint32_t usec, int flags); |
| extern ipl_t waitq_sleep_prepare(waitq_t *wq); |
| extern int waitq_sleep_timeout_unsafe(waitq_t *wq, uint32_t usec, int flags); |
| extern void waitq_sleep_finish(waitq_t *wq, int rc, ipl_t ipl); |
| extern void waitq_wakeup(waitq_t *wq, bool all); |
| extern void _waitq_wakeup_unsafe(waitq_t *wq, bool all); |
| extern void waitq_interrupt_sleep(thread_t *t); |
| |
| #endif |
| |
| /** @} |
| */ |
| |