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/**
* @file
*
* @brief Send a Message to a Message Queue
* @ingroup POSIX_MQUEUE
*/
/*
* COPYRIGHT (c) 1989-2008.
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdarg.h>
#include <pthread.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <mqueue.h>
#include <rtems/system.h>
#include <rtems/score/todimpl.h>
#include <rtems/seterr.h>
#include <rtems/posix/mqueueimpl.h>
int mq_timedsend(
mqd_t mqdes,
const char *msg_ptr,
size_t msg_len,
unsigned int msg_prio,
const struct timespec *abstime
)
{
Watchdog_Interval ticks;
bool do_wait = true;
TOD_Absolute_timeout_conversion_results status;
/*
* 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.
*
* If the status is TOD_ABSOLUTE_TIMEOUT_INVALID,
* TOD_ABSOLUTE_TIMEOUT_IS_IN_PAST, or TOD_ABSOLUTE_TIMEOUT_IS_NOW,
* then we should not wait.
*/
status = _TOD_Absolute_timeout_to_ticks( abstime, CLOCK_REALTIME, &ticks );
if ( status != TOD_ABSOLUTE_TIMEOUT_IS_IN_FUTURE )
do_wait = false;
return _POSIX_Message_queue_Send_support(
mqdes,
msg_ptr,
msg_len,
msg_prio,
do_wait,
ticks
);
}
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