int _POSIX_Message_queue_Send_support(
mqd_t mqdes,
const char *msg_ptr,
size_t msg_len,
unsigned int msg_prio,
bool wait,
Watchdog_Interval timeout
)
{
POSIX_Message_queue_Control *the_mq;
POSIX_Message_queue_Control_fd *the_mq_fd;
Objects_Locations location;
CORE_message_queue_Status msg_status;
bool do_wait;
Thread_Control *executing;
ISR_lock_Context lock_context;
/*
* Validate the priority.
* XXX - Do not validate msg_prio is not less than 0.
*/
if ( msg_prio > MQ_PRIO_MAX )
rtems_set_errno_and_return_minus_one( EINVAL );
the_mq_fd = _POSIX_Message_queue_Get_fd_interrupt_disable(
mqdes,
&location,
&lock_context
);
switch ( location ) {
case OBJECTS_LOCAL:
if ( (the_mq_fd->oflag & O_ACCMODE) == O_RDONLY ) {
_ISR_lock_ISR_enable( &lock_context );
rtems_set_errno_and_return_minus_one( EBADF );
}
the_mq = the_mq_fd->Queue;
/*
* A timed receive with a bad time will do a poll regardless.
*/
if ( wait )
do_wait = (the_mq_fd->oflag & O_NONBLOCK) ? false : true;
else
do_wait = wait;
/*
* Now perform the actual message receive
*/
executing = _Thread_Executing;
msg_status = _CORE_message_queue_Submit(
&the_mq->Message_queue,
executing,
msg_ptr,
msg_len,
mqdes, /* mqd_t is an object id */
NULL,
_POSIX_Message_queue_Priority_to_core( msg_prio ),
do_wait,
timeout, /* no timeout */
&lock_context
);
/*
* If we had to block, then this is where the task returns
* after it wakes up. The returned status is correct for
* non-blocking operations but if we blocked, then we need
* to look at the status in our TCB.
*/
if ( msg_status == CORE_MESSAGE_QUEUE_STATUS_UNSATISFIED_WAIT )
msg_status = executing->Wait.return_code;
if ( !msg_status )
return msg_status;
rtems_set_errno_and_return_minus_one(
_POSIX_Message_queue_Translate_core_message_queue_return_code(
msg_status
)
);
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
#endif
case OBJECTS_ERROR:
break;
}
rtems_set_errno_and_return_minus_one( EBADF );
}
ER tsnd_mbf(
ID mbfid,
VP msg,
INT msgsz,
TMO tmout
)
{
ITRON_Message_buffer_Control *the_message_buffer;
Objects_Locations location;
Watchdog_Interval interval;
bool wait;
CORE_message_queue_Status msg_status;
if (msgsz <= 0 || !msg)
return E_PAR;
interval = 0;
if ( tmout == TMO_POL ) {
wait = false;
} else {
wait = true;
if ( tmout != TMO_FEVR )
interval = TOD_MILLISECONDS_TO_TICKS(tmout);
}
if ( wait && _ITRON_Is_in_non_task_state() )
return E_CTX;
the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location);
switch (location) {
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
#endif
case OBJECTS_ERROR: /* Multiprocessing not supported */
return _ITRON_Message_buffer_Clarify_get_id_error(mbfid);
case OBJECTS_LOCAL:
/* XXX Submit needs to take into account blocking */
msg_status = _CORE_message_queue_Submit(
&the_message_buffer->message_queue,
msg,
msgsz,
the_message_buffer->Object.id,
NULL,
CORE_MESSAGE_QUEUE_SEND_REQUEST,
wait, /* sender may block */
interval /* timeout interval */
);
_Thread_Enable_dispatch();
return _ITRON_Message_buffer_Translate_core_message_buffer_return_code(
msg_status
);
}
/*
* If multiprocessing were supported, this is where we would announce
* the existence of the semaphore to the rest of the system.
*/
#if defined(RTEMS_MULTIPROCESSING)
#endif
return E_OK;
}
