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/*
* $Id$
*/
/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/system.h>
#include <rtems/score/object.h>
#include <rtems/score/states.h>
#include <rtems/score/watchdog.h>
#include <rtems/posix/cond.h>
#include <rtems/posix/time.h>
#include <rtems/posix/mutex.h>
/*PAGE
*
* 11.4.4 Waiting on a Condition, P1003.1c/Draft 10, p. 105
*/
int pthread_cond_timedwait(
pthread_cond_t *cond,
pthread_mutex_t *mutex,
const struct timespec *abstime
)
{
Watchdog_Interval timeout;
struct timespec current_time;
struct timespec difference;
boolean already_timedout = FALSE;
if ( !_Timespec_Is_valid(abstime) )
return EINVAL;
/*
* The abstime is a walltime. We turn it into an interval.
*/
_TOD_Get( ¤t_time );
/*
* Make sure the timeout is in the future
*/
if ( _Timespec_Less_than( abstime, ¤t_time ) ) {
already_timedout = TRUE;
difference.tv_sec = 0;
difference.tv_nsec = 0;
timeout = 0;
} else {
_Timespec_Subtract( ¤t_time, abstime, &difference );
timeout = _Timespec_To_ticks( &difference );
}
return _POSIX_Condition_variables_Wait_support(
cond,
mutex,
timeout,
already_timedout
);
}
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