C++ ACE_Timer_Node_T::get_next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> int
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::cancel (const TYPE &type,
                                               int dont_call)
{
  ACE_TRACE ("ACE_Timer_List_T::cancel");
  ACE_MT (ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->mutex_, -1));

  int number_of_cancellations = 0;

  for (ACE_Timer_Node_T<TYPE> *curr = this->head_->get_next ();
       curr != this->head_;
       )
    {
      if (curr->get_type () == type)
        {
          number_of_cancellations++;

          curr->get_prev ()->set_next (curr->get_next ());
          curr->get_next ()->set_prev (curr->get_prev ());
          ACE_Timer_Node_T<TYPE> *temp = curr;
          curr = curr->get_next ();
          this->free_node (temp);
        }
      else
        curr = curr->get_next ();
    }

  if (dont_call == 0)
     this->upcall_functor ().cancellation (*this, type);

  return number_of_cancellations;
}

// Locate and remove all values of <handler> from the timer queue.
template <class TYPE, class FUNCTOR, class ACE_LOCK> int
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::cancel (const TYPE &type, int skip_close)
{
  ACE_TRACE ("ACE_Timer_List_T::cancel");

  int num_canceled = 0; // Note : Technically this can overflow.

  int cookie = 0;

  ACE_MT (ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->mutex_, -1));

  if (!this->is_empty ())
    {
      for (ACE_Timer_Node_T<TYPE>* n = this->get_first();
           n != this->head_;
           )
        {
          if (n->get_type() == type) // Note: Typically Type is an ACE_Event_Handler*
            {
              ++num_canceled;

              ACE_Timer_Node_T<TYPE>* tmp = n;
              n = n->get_next();

              this->cancel_i (tmp);
            }
          else
            {
              n = n->get_next();
            }
        }
    }

  // Call the close hooks.

  // cancel_type() called once per <type>.
  this->upcall_functor ().cancel_type (*this,
                                       type,
                                       skip_close,
                                       cookie);

  for (int i = 0;
       i < num_canceled;
       ++i)
    {
      // cancel_timer() called once per <timer>.
      this->upcall_functor ().cancel_timer (*this,
                                            type,
                                            skip_close,
                                            cookie);
    }

  return num_canceled;
}

template <class TYPE, class FUNCTOR, class ACE_LOCK, typename TIME_POLICY> int
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK, TIME_POLICY>::close (void)
{
  ACE_TRACE ("ACE_Timer_List_T::close");
  ACE_MT (ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->mutex_, -1));

  // Remove all remaining items in the list.
  if (!this->is_empty())
    {
      for (ACE_Timer_Node_T<TYPE>* n = this->get_first();
           n != this->head_;
           )
        {
          this->upcall_functor ().deletion (*this,
                                            n->get_type(),
                                            n->get_act());

          ACE_Timer_Node_T<TYPE> *next =
            n->get_next ();

          this->free_node (n);

          n = next;
        }
    }

  // Leave rest to destructor
  return 0;
}

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> 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> void
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::dump (void) const
{
#if defined (ACE_HAS_DUMP)
  ACE_TRACE ("ACE_Timer_List_T::dump");
  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));

  int count = 0;

  ACE_Timer_Node_T<TYPE>* n = this->get_first_i();
  if (n != 0) {
    for (; n != this->head_; n = n->get_next()) {
      ++count;
    }
  }

  ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\nsize_ = %d"), count));
  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_HAS_DUMP */
}