Exemplo n.º 1
0
/*---------------------------------------------------------------------------*/
static void
do_event(void)
{
  static process_event_t ev;
  static process_data_t data;
  static struct process *receiver;
  static struct process *p;
  
  WDTE=0xac;
  
  /*
   * If there are any events in the queue, take the first one and walk
   * through the list of processes to see if the event should be
   * delivered to any of them. If so, we call the event handler
   * function for the process. We only process one event at a time and
   * call the poll handlers inbetween.
   */

  if(nevents > 0) {
    
    /* There are events that we should deliver. */
    ev = events[fevent].ev;
    
    data = events[fevent].data;
    receiver = events[fevent].p;

    /* Since we have seen the new event, we move pointer upwards
       and decrese the number of events. */
    fevent = (fevent + 1) % PROCESS_CONF_NUMEVENTS;
    --nevents;

    /* If this is a broadcast event, we deliver it to all events, in
       order of their priority. */
    if(receiver == PROCESS_BROADCAST) {
      for(p = process_list; p != NULL; p = p->next) {

	/* If we have been requested to poll a process, we do this in
	   between processing the broadcast event. */
	if(poll_requested) {
	  do_poll();
	}
	call_process(p, ev, data);
      }
    } else {
      /* This is not a broadcast event, so we deliver it to the
	 specified process. */
      /* If the event was an INIT event, we should also update the
	 state of the process. */
      if(ev == PROCESS_EVENT_INIT) {
	receiver->state = PROCESS_STATE_RUNNING;
      }

      /* Make sure that the process actually is running. */
      call_process(receiver, ev, data);
    }
  }
}
Exemplo n.º 2
0
/*---------------------------------------------------------------------------*/
void
process_post_synch(struct process *p, process_event_t ev, process_data_t data)
{
  struct process *caller = process_current;

  call_process(p, ev, data);
  process_current = caller;
}
Exemplo n.º 3
0
/*---------------------------------------------------------------------------*/
static void
exit_process(struct process *p, struct process *fromprocess)
{
  register struct process *q;
  struct process *old_current = process_current;

  WDTE=0xac;
  
  PRINTF("process: exit_process '%s'\n", PROCESS_NAME_STRING(p));

  /* Make sure the process is in the process list before we try to
     exit it. */
  for(q = process_list; q != p && q != NULL; q = q->next);
  if(q == NULL) {
    return;
  }

  if(process_is_running(p)) {
    /* Process was running */
    p->state = PROCESS_STATE_NONE;

    /*
     * Post a synchronous event to all processes to inform them that
     * this process is about to exit. This will allow services to
     * deallocate state associated with this process.
     */
    for(q = process_list; q != NULL; q = q->next) {
      if(p != q) {
	call_process(q, PROCESS_EVENT_EXITED, (process_data_t)p);
      }
    }

    if(p->thread != NULL && p != fromprocess) {
      /* Post the exit event to the process that is about to exit. */
      process_current = p;
      p->thread(&p->pt, PROCESS_EVENT_EXIT, NULL);
    }
  }

  if(p == process_list) {
    process_list = process_list->next;
  } else {
    for(q = process_list; q != NULL; q = q->next) {
      if(q->next == p) {
	q->next = p->next;
	break;
      }
    }
  }

  process_current = old_current;
}
Exemplo n.º 4
0
/*---------------------------------------------------------------------------*/
static void
do_poll(void)
{
  struct process *p;

  poll_requested = 0;
  /* Call the processes that needs to be polled. */
  for(p = process_list; p != NULL; p = p->next) {
    if(p->needspoll) {
      p->state = PROCESS_STATE_RUNNING;
      p->needspoll = 0;
      call_process(p, PROCESS_EVENT_POLL, NULL);
    }
  }
}
Exemplo n.º 5
0
/*Should not used in interrupt*/
RAW_U16 process_post_synch(struct process *p, process_event_t ev, process_data_t data)
{
	struct process *caller = process_current;

	if (raw_int_nesting) {

		return RAW_NOT_CALLED_BY_ISR;

	}

	call_process(p, ev, data);
	process_current = caller;
	
	return RAW_SUCCESS;
}
Exemplo n.º 6
0
static void do_poll(void)
{
	struct process *p;
	RAW_SR_ALLOC();

	RAW_CRITICAL_ENTER();
	poll_requested--;
	RAW_CRITICAL_EXIT();
	/* Call the processes that needs to be polled. */
	for(p = process_list; p != 0; p = p->next) {
		
		if(p->needspoll) {
			p->state = PROCESS_STATE_RUNNING;
			p->needspoll = 0;
			call_process(p, PROCESS_EVENT_POLL, 0);
		}
	}
}
Exemplo n.º 7
0
static void run_graph(MSFilter *f, MSTicker *s, MSList **unschedulable, bool_t force_schedule){
	int i;
	MSQueue *l;
	if (f->last_tick!=s->ticks ){
		if (filter_can_process(f,s->ticks) || force_schedule) {
			/* this is a candidate */
			f->last_tick=s->ticks;
			call_process(f);	
			/* now recurse to next filters */		
			for(i=0;i<f->desc->noutputs;i++){
				l=f->outputs[i];
				if (l!=NULL){
					run_graph(l->next.filter,s,unschedulable, force_schedule);
				}
			}
		}else{
			/* this filter has not all inputs that have been filled by filters before it. */
			*unschedulable=ms_list_prepend(*unschedulable,f);
		}
	}
}
Exemplo n.º 8
0
Arquivo: fx.hpp Projeto: zlateski/zoov
 image_ptr process(cell_ptr& l)
 {
     return call_process(l, process_indices());
 }