C++ ACE_Timer_Node_T::get_timer_value方法代码示例

/// The shared scheduling functionality between schedule() and reschedule()
template <class TYPE, class FUNCTOR, class ACE_LOCK> void
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::schedule_i (ACE_Timer_Node_T<TYPE>* n,
                                                       const ACE_Time_Value& expire)
{
  if (this->is_empty()) {
    n->set_prev(this->head_);
    n->set_next(this->head_);
    this->head_->set_prev(n);
    this->head_->set_next(n);
    return;
  }

  // We always want to search backwards from the tail of the list, because
  // this minimizes the search in the extreme case when lots of timers are
  // scheduled for exactly the same time, and it also assumes that most of
  // the timers will be scheduled later than existing timers.
  ACE_Timer_Node_T<TYPE>* p = this->head_->get_prev();
  while (p != this->head_ && p->get_timer_value() > expire)
    p = p->get_prev();

  // insert after
  n->set_prev(p);
  n->set_next(p->get_next());
  p->get_next()->set_prev(n);
  p->set_next(n);
}

template <class TYPE, class FUNCTOR, class ACE_LOCK> long
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::schedule (const TYPE &type,
                                                 const void *act,
                                                 const ACE_Time_Value &future_time,
                                                 const ACE_Time_Value &interval)
{
  ACE_TRACE ("ACE_Timer_List_T::schedule");
  ACE_MT (ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->mutex_, -1));

  // Place in the middle of the list where it belongs (i.e., sorted in
  // ascending order of absolute time to expire).
  ACE_Timer_Node_T<TYPE> *after = this->head_->get_next ();

  while (after != this->head_
         && future_time > after->get_timer_value ())
      after = after->get_next ();

  ACE_Timer_Node_T<TYPE> *temp = this->alloc_node ();

  temp->set (type,
             act,
             future_time,
             interval,
             after->get_prev (),
             after,
             (long) temp);

  after->get_prev ()->set_next (temp);
  after->set_prev (temp);

  return ACE_reinterpret_cast (long, temp);
}

template <class TYPE, class FUNCTOR, class ACE_LOCK> const ACE_Time_Value &
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::earliest_time (void) const
{
  ACE_TRACE ("ACE_Timer_List_T::earliest_time");
  ACE_Timer_Node_T<TYPE>* first = this->get_first_i();
  if (first != 0)
    return first->get_timer_value ();
  return ACE_Time_Value::zero;
}

template <class TYPE, class FUNCTOR, class ACE_LOCK> int
ACE_Timer_Queue_T<TYPE, FUNCTOR, ACE_LOCK>::dispatch_info_i (const ACE_Time_Value &cur_time,
                                                             ACE_Timer_Node_Dispatch_Info_T<TYPE> &info)
{
  ACE_TRACE ("ACE_Timer_Queue_T::dispatch_info_i");

  if (this->is_empty ())
    return 0;

  ACE_Timer_Node_T<TYPE> *expired = 0;

  if (this->earliest_time () <= cur_time)
    {
      expired = this->remove_first ();

      // Get the dispatch info
      expired->get_dispatch_info (info);

      // Check if this is an interval timer.
      if (expired->get_interval () > ACE_Time_Value::zero)
        {
          // Make sure that we skip past values that have already
          // "expired".
          do
            expired->set_timer_value (expired->get_timer_value () +
                                      expired->get_interval ());
          while (expired->get_timer_value () <= cur_time);

          // Since this is an interval timer, we need to reschedule
          // it.
          this->reschedule (expired);
        }
      else
        {
          // Call the factory method to free up the node.
          this->free_node (expired);
        }

      return 1;
    }

  return 0;
}

template <class TYPE, class FUNCTOR, class ACE_LOCK> void
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::reschedule (ACE_Timer_Node_T<TYPE> *expired)
{
  ACE_TRACE ("ACE_Timer_List_T::reschedule");

  ACE_Timer_Node_T<TYPE> *after = this->head_->get_next ();

  // Locate the proper position in the queue.

  while (after != this->head_
         && expired->get_timer_value () > after->get_timer_value ())
      after = after->get_next ();

  expired->set_next (after);
  expired->set_prev (after->get_prev ());
  after->get_prev ()->set_next (expired);
  after->set_prev (expired);
}

template <class TYPE, class FUNCTOR, class ACE_LOCK, class BUCKET> int
ACE_Timer_Hash_T<TYPE, FUNCTOR, ACE_LOCK, BUCKET>::expire (const ACE_Time_Value &cur_time)
{
  ACE_TRACE ("ACE_Timer_Hash_T::expire");
  ACE_MT (ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->mutex_, -1));

  int number_of_timers_expired = 0;

  ACE_Timer_Node_T<TYPE> *expired;

  // Go through the table and expire anything that can be expired

  for (size_t i = 0;
       i < this->table_size_;
       i++)
    {
      while (!this->table_[i]->is_empty () 
             && this->table_[i]->earliest_time () <= cur_time)
        {
          expired = this->table_[i]->get_first ();
          TYPE type = expired->get_type ();
          const void *act = expired->get_act ();
          int reclaim = 1;

          // Check if this is an interval timer.
          if (expired->get_interval () > ACE_Time_Value::zero)
            {
              // Make sure that we skip past values that have already
              // "expired".
              do
                expired->set_timer_value (expired->get_timer_value () 
                                          + expired->get_interval ());
              while (expired->get_timer_value () <= cur_time);

              // Since this is an interval timer, we need to
              // reschedule it.
              this->reschedule (expired);
              reclaim = 0;
            }

          // Now remove the timer from the original table... if
          // it's a simple, non-recurring timer, it's got to be
          // removed anyway. If it was rescheduled, it's been
          // scheduled into the correct table (regardless of whether
          // it's the same one or not) already.
          this->table_[i]->cancel (expired->get_timer_id ());

          Hash_Token *h = ACE_reinterpret_cast (Hash_Token *, 
                                                ACE_const_cast (void *,
                                                                act));
          // Call the functor.
          this->upcall (type,
                        h->act_,
                        cur_time);
          if (reclaim)
            {
              --this->size_;
              delete h;
            }
          number_of_timers_expired++;
        }
    }

  return number_of_timers_expired;
}