diff options
Diffstat (limited to 'rtemsbsd/rtems/rtems-bsd-condvar.c')
| -rw-r--r-- | rtemsbsd/rtems/rtems-bsd-condvar.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/rtemsbsd/rtems/rtems-bsd-condvar.c b/rtemsbsd/rtems/rtems-bsd-condvar.c deleted file mode 100644 index ff2f9c30..00000000 --- a/rtemsbsd/rtems/rtems-bsd-condvar.c +++ /dev/null @@ -1,165 +0,0 @@ -/** - * @file - * - * @ingroup rtems_bsd_rtems - * - * @brief TODO. - */ - -/* - * Copyright (c) 2009-2014 embedded brains GmbH. All rights reserved. - * - * Dornierstr. 4 - * 82178 Puchheim - * Germany - * <rtems@embedded-brains.de> - * - * 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. - */ - -#include <machine/rtems-bsd-kernel-space.h> -#include <machine/rtems-bsd-support.h> - -#include <rtems/score/threaddispatch.h> -#include <rtems/score/threadimpl.h> -#include <rtems/score/threadqimpl.h> - -#include <rtems/bsd/sys/param.h> -#include <rtems/bsd/sys/types.h> -#include <sys/systm.h> -#include <rtems/bsd/sys/lock.h> -#include <sys/condvar.h> -#include <sys/mutex.h> - -void -cv_init(struct cv *cv, const char *desc) -{ - - cv->cv_description = desc; - _Thread_queue_Initialize(&cv->cv_waiters, THREAD_QUEUE_DISCIPLINE_PRIORITY, - STATES_WAITING_FOR_CONDITION_VARIABLE, EWOULDBLOCK); -} - -void -cv_destroy(struct cv *cv) -{ - - BSD_ASSERT(_Thread_queue_First(&cv->cv_waiters) == NULL); -} - -static int -_cv_wait_support(struct cv *cv, struct lock_object *lock, Watchdog_Interval timo, bool relock) -{ - int error; - struct lock_class *class; - int lock_state; - Thread_Control *executing; - - _Thread_Disable_dispatch(); - - class = LOCK_CLASS(lock); - lock_state = (*class->lc_unlock)(lock); - - _Thread_queue_Enter_critical_section(&cv->cv_waiters); - - executing = _Thread_Executing; - executing->Wait.return_code = 0; - executing->Wait.queue = &cv->cv_waiters; - - _Thread_queue_Enqueue(&cv->cv_waiters, executing, timo); - - DROP_GIANT(); - - _Thread_Enable_dispatch(); - - PICKUP_GIANT(); - - error = (int)executing->Wait.return_code; - - if (relock) { - (*class->lc_lock)(lock, lock_state); - } - - return (error); -} - -void -_cv_wait(struct cv *cv, struct lock_object *lock) -{ - - _cv_wait_support(cv, lock, 0, true); -} - -void -_cv_wait_unlock(struct cv *cv, struct lock_object *lock) -{ - - _cv_wait_support(cv, lock, 0, false); -} - -int -_cv_timedwait(struct cv *cv, struct lock_object *lock, int timo) -{ - if (timo <= 0) - timo = 1; - - return (_cv_wait_support(cv, lock, (Watchdog_Interval)timo, true)); -} - -void -cv_signal(struct cv *cv) -{ - - _Thread_Disable_dispatch(); - _Thread_queue_Dequeue(&cv->cv_waiters); - _Thread_Enable_dispatch(); -} - -void -cv_broadcastpri(struct cv *cv, int pri) -{ - - _Thread_Disable_dispatch(); - - while (_Thread_queue_Dequeue(&cv->cv_waiters) != NULL) { - /* Again */ - } - - _Thread_Enable_dispatch(); -} - -int -_cv_wait_sig(struct cv *cv, struct lock_object *lock) -{ - - return (_cv_wait_support(cv, lock, 0, true)); -} - -int -_cv_timedwait_sig(struct cv *cv, struct lock_object *lock, int timo) -{ - - if (timo <= 0) - timo = 1; - - return (_cv_wait_support(cv, lock, (Watchdog_Interval)timo, true)); -} |