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/* -*- C++ -*- */
/**
* @file ThreadPool_Task.h
*
* $Id$
*
* @author Pradeep Gore <pradeep@oomworks.com>
*
*
*/
#ifndef TAO_Notify_THREADPOOL_TASK_H
#define TAO_Notify_THREADPOOL_TASK_H
#include /**/ "ace/pre.h"
#include "notify_serv_export.h"
#include "Timer_Queue.h"
#include "AdminProperties.h"
#include "Worker_Task.h"
#include "ace/Task.h"
#include "ace/Message_Queue.h"
#include "ace/Reactor.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_Notify_Buffering_Strategy;
/**
* @class TAO_Notify_ThreadPool_Task
*
* @brief Implements a Thread Pool Worker Task.
*
*/
class TAO_Notify_Serv_Export TAO_Notify_ThreadPool_Task : public TAO_Notify_Worker_Task, public ACE_Task<ACE_NULL_SYNCH>
{
friend class TAO_Notify_Method_Request_Shutdown;
public:
/// Constuctor
TAO_Notify_ThreadPool_Task (void);
/// Destructor
virtual ~TAO_Notify_ThreadPool_Task ();
/// Call the base class init
virtual int init (int argc, ACE_TCHAR **argv);
/// release reference to my self.
virtual int close (u_long flags);
/// Activate the threadpool
void init (const NotifyExt::ThreadPoolParams& tp_params, TAO_Notify_AdminProperties::Ptr& admin_properties ACE_ENV_ARG_DECL);
/// Queue the request
virtual void execute (TAO_Notify_Method_Request& method_request ACE_ENV_ARG_DECL);
/// Shutdown task
virtual void shutdown ();
/// Update QoS Properties.
virtual void update_qos_properties (const TAO_Notify_QoSProperties& qos_properties);
/// The object used by clients to register timers.
virtual TAO_Notify_Timer* timer (void);
protected:
/// Task svc
virtual int svc (void);
private:
/// Release
virtual void release (void);
/// wait for all threads to exit svc()
virtual void wait_for_shutdown ();
/// The buffering strategy to use.
ACE_Auto_Ptr< TAO_Notify_Buffering_Strategy > buffering_strategy_;
/// Shutdown
bool shutdown_;
/// The Queue based timer.
TAO_Notify_Timer_Queue::Ptr timer_;
// Since this class already inherited from ACE_Event_Handler
// I did not want to conflict with a possible parent
/// implementation of handle_exception.
class Shutdown_Handler : public ACE_Event_Handler
{
public:
Shutdown_Handler (TAO_Notify_ThreadPool_Task* owner) : owner_ (owner) {};
/// wait for all threads to complete in another thread
virtual int handle_exception (ACE_HANDLE fd = ACE_INVALID_HANDLE)
{
ACE_UNUSED_ARG (fd);
owner_->wait_for_shutdown ();
return 0;
}
private:
TAO_Notify_ThreadPool_Task* owner_;
};
friend class Shutdown_Handler;
Shutdown_Handler shutdown_handler_;
};
#include /**/ "ace/post.h"
#endif /* TAO_Notify_THREADPOOL_TASK_H */
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