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/*
* $Id$
*/
#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 ( !abstime )
return EINVAL;
/*
* The abstime is a walltime. We turn it into an interval.
*/
(void) clock_gettime( CLOCK_REALTIME, ¤t_time );
/* XXX probably some error checking should go here */
_POSIX_Timespec_subtract( ¤t_time, abstime, &difference );
if ( ( difference.tv_sec < 0 ) || ( ( difference.tv_sec == 0 ) &&
( difference.tv_nsec < 0 ) ) )
already_timedout = TRUE;
timeout = _POSIX_Timespec_to_interval( &difference );
return _POSIX_Condition_variables_Wait_support(
cond,
mutex,
timeout,
already_timedout
);
}
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