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// $Id: Dispatch_Deferrer.cpp 91670 2010-09-08 18:02:26Z johnnyw $
#include "ace/Sched_Params.h"
#include "Dispatch_Deferrer.h"
#include "Dispatcher_Task.h"
#if ! defined (__ACE_INLINE__)
#include "Dispatch_Deferrer.inl"
#endif /* __ACE_INLINE__ */
#include "kokyu_config.h"
#include "kokyu_dsui_families.h"
#include <dsui.h>
namespace Kokyu
{
int
Dispatch_Deferrer::init(const Dispatch_Deferrer_Attributes& attr)
{
//set up reactor for timeouts
this->react_.open(0);
//Don't need any handles, since we're only using it for timeouts
this->timers_.open();
this->task_ = attr.task_;
return 0;
}
int
Dispatch_Deferrer::dispatch (Dispatch_Queue_Item *qitem)
{
ACE_ASSERT(qitem != 0);
//setup timout
//For now, assume period = deadline
ACE_Time_Value tv;
tv = ACE_OS::gettimeofday() + qitem->qos_info().deadline_;
long timer_id = this->react_.schedule_timer(this,
0, //NULL arg
tv);
if (timer_id < 0)
{
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("EC (%P|%t) cannot schedule Release Guard timer.")
ACE_TEXT ("ACE_Reactor.schedule_timer() returned -1\n")),
-1);
}
//else valid timer_id
this->timers_.bind(qitem,timer_id);
//@BT INSTRUMENT with event ID: EVENT_DEFERRED_ENQUEUE Measure time
//between release and enqueue into dispatch queue because of RG
DSUI_EVENT_LOG(DISP_DEFERRER_FAM, EVENT_DEFERRED_ENQUEUE, timer_id, 0, 0);
//buffer until timer expires
return this->rgq_.enqueue_deadline(qitem,&tv);
}
int
Dispatch_Deferrer::handle_timeout (const ACE_Time_Value &,
const void *)
{
//get all expired Dispatch_Queue_Items
ACE_Message_Block *begin,*end;
this->rgq_.remove_messages(begin,end,
(u_int) (ACE_Dynamic_Message_Strategy::LATE |
ACE_Dynamic_Message_Strategy::BEYOND_LATE));
//dispatch them back to Dispatcher_Impl
while (begin <= end)
{
Dispatch_Queue_Item *qitem =
dynamic_cast<Dispatch_Queue_Item*> (begin);
if (qitem == 0)
{
ACE_Message_Block::release (begin);
continue;
}
//remove timer for each enqueued qitem from reactor
long timer_id;
if (this->timers_.find(qitem,timer_id) < 0)
{
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("Could not cancel Release Guard timer.")
ACE_TEXT ("Unknown timer ID\n")),
-1);
}
//else got timer_id
this->react_.cancel_timer(timer_id);
//@BT INSTRUMENT with event ID: EVENT_DEFERRED_DEQUEUE Measure
//time between release and enqueue into dispatch queue because
//of RG
DSUI_EVENT_LOG (DISP_DEFERRER_FAM, EVENT_DEFERRED_DEQUEUE, timer_id, 0, 0);
this->task_->enqueue(qitem);
++begin;
}
return 0;
}
} //namespace Kokyu
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