/** @internal Send a message to the port.
*
* @retval 0 if there are other messages in queue, too
* @retval -1 upon an error
*/
int su_base_port_send(su_port_t *self, su_msg_r rmsg)
{
if (self) {
int wakeup;
su_port_lock(self, "su_port_send");
wakeup = self->sup_head == NULL;
*self->sup_tail = rmsg[0]; rmsg[0] = NULL;
self->sup_tail = &(*self->sup_tail)->sum_next;
su_port_unlock(self, "su_port_send");
if (wakeup > 0)
su_port_wakeup(self);
return 0;
}
else {
su_msg_destroy(rmsg);
return -1;
}
}
/** Wakeup a task.
*
* Wake up a task. This function is mainly useful when using deferrable
* timers executed upon wakeup.
*
* @param task task handle
*
* @retval 0 if succesful
* @retval -1 upon an error
*
* @NEW_1_12_11
*/
int su_task_wakeup(su_task_r const task)
{
return task ? su_port_wakeup(task->sut_port) : -1;
}
