Function work_queue_wq

sched/wqueue/kwork_queue.c:157–224

 ****************************************************************************/

int work_queue_wq(FAR struct kwork_wqueue_s *wqueue,
                  FAR struct work_s *work, worker_t worker,
                  FAR void *arg, clock_t delay)
{
  irqstate_t flags;
  clock_t expected;
  bool retimer;

  if (wqueue == NULL || work == NULL || worker == NULL ||
      delay > WDOG_MAX_DELAY)
    {
      return -EINVAL;
    }

  expected = clock_delay2abstick(delay);

  /* Interrupts are disabled so that this logic can be called from with
   * task logic or from interrupt handling logic.
   */

  flags = spin_lock_irqsave(&wqueue->lock);

  /* Ensure the work has been removed. */

  retimer = work_available(work) ? false : work_remove(wqueue, work);

  /* Initialize the work structure. */

  work->worker = worker;   /* Work callback. non-NULL means queued */
  work->arg    = arg;      /* Callback argument */
  work->qtime  = expected; /* Expected time */

  if (delay)
    {
      /* Insert to the pending list of the wqueue. */

      if (work_insert_pending(wqueue, work))
        {
          /* Start the timer if the work is the earliest expired work. */

          retimer = false;
          wd_start_abstick(&wqueue->timer, work->qtime,
                           work_timer_expired, (wdparm_t)wqueue);
        }
    }
  else
    {
      /* Insert to the expired list of the wqueue. */

      list_add_tail(&wqueue->expired, &work->node);
    }

  if (retimer)
    {
      work_timer_reset(wqueue);
    }

  spin_unlock_irqrestore(&wqueue->lock, flags);