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/*
* $Id$
*/
#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 ticks;
boolean already_timedout;
/*
* POSIX requires that blocking calls with timeouts that take
* an absolute timeout must ignore issues with the absolute
* time provided if the operation would otherwise succeed.
* So we check the abstime provided, and hold on to whether it
* is valid or not. If it isn't correct and in the future,
* then we do a polling operation and convert the UNSATISFIED
* status into the appropriate error.
*/
switch ( _POSIX_Absolute_timeout_to_ticks(abstime, &ticks) ) {
case POSIX_ABSOLUTE_TIMEOUT_INVALID:
return EINVAL;
case POSIX_ABSOLUTE_TIMEOUT_IS_IN_PAST:
case POSIX_ABSOLUTE_TIMEOUT_IS_NOW:
already_timedout = TRUE;
break;
case POSIX_ABSOLUTE_TIMEOUT_IS_IN_FUTURE:
already_timedout = FALSE;
break;
}
return _POSIX_Condition_variables_Wait_support(
cond,
mutex,
ticks,
already_timedout
);
}
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