C++ ACE_Timer_Node_T类代码示例

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

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

  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.
  int cookie = 0;

  // 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;
}

// Locate and update the inteval on the timer_id
template <class TYPE, class FUNCTOR, class ACE_LOCK> int
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::reset_interval (long timer_id,
                                                           const ACE_Time_Value &interval)
{
  ACE_TRACE ("ACE_Timer_List_T::reset_interval");
  ACE_MT (ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->mutex_, -1));
  ACE_Timer_Node_T<TYPE>* n = this->find_node(timer_id);
  if (n != 0) {
    n->set_interval(interval); // The interval will take effect the next time this node is expired.
    return 0;
  }
  return -1;
}

ACE_Timer_Node_T<TYPE>*
ACE_Timer_List_T<TYPE, FUNCTOR, ACE_LOCK>::find_node (long timer_id) const
{
  ACE_Timer_Node_T<TYPE>* n = this->get_first_i();
  if (n == 0)
    return 0;

  for (; n != this->head_; n = n->get_next()) {
    if (n->get_timer_id() == timer_id) {
      return n;
    }
  }
  return 0;
}

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;
}

int
BPR_Handler_Base::clear_all_timers (void *)
{
  // Loop through the timers in the queue, cancelling each one.

  for (ACE_Timer_Node_T <ACE_Event_Handler *> *node;
       (node = queue_.timer_queue ()->get_first ()) != 0;
       )
    queue_.timer_queue ()->cancel (node->get_timer_id (), 0, 0);
  //    queue_.cancel (node->get_timer_id (), 0);

  // Invoke the handler's (virtual) destructor
  delete this;

  return 0;
}

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 */
}

/// 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, typename TIME_POLICY> int
ACE_Timer_Queue_T<TYPE, FUNCTOR, ACE_LOCK, TIME_POLICY>::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".
          this->recompute_next_abs_interval_time (expired, 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, 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;
}