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/* -*- C++ -*- */
//=============================================================================
/**
* @file CEC_Pulling_Strategy.h
*
* $Id$
*
* @author Carlos O'Ryan (coryan@cs.wustl.edu)
*/
//=============================================================================
#ifndef TAO_CEC_PULLING_STRATEGY_H
#define TAO_CEC_PULLING_STRATEGY_H
#include /**/ "ace/pre.h"
#include "tao/Basic_Types.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/Objref_VarOut_T.h"
#include "orbsvcs/CosEvent/event_serv_export.h"
/**
* @class TAO_CEC_Pulling_Strategy
*
* @brief Define the interface for the pulling strategies.
*
* The EC may be configured with different pulling strategies,
* for instance, it can use a pool of threads to dispatch the
* events, or a set of queues with threads at different priorities
* for each queue or can simply push the event to the consumer in
* FIFO order.
*/
class TAO_Event_Serv_Export TAO_CEC_Pulling_Strategy
{
public:
/// destructor...
virtual ~TAO_CEC_Pulling_Strategy (void);
/// Initialize all the data structures, activate any internal threads,
/// etc.
virtual void activate (void) = 0;
/**
* Deactivate any internal threads and cleanup internal data
* structures, it should only return once the threads have finished
* their jobs.
*/
virtual void shutdown (void) = 0;
#if 0
/// Some strategies may want to keep track of connected consumers.
virtual void connected (TAO_CEC_ProxyPullConsumer *
ACE_ENV_ARG_DECL_NOT_USED) = 0;
virtual void reconnected (TAO_CEC_ProxyPullConsumer *
ACE_ENV_ARG_DECL_NOT_USED) = 0;
virtual void diconnected (TAO_CEC_ProxyPullConsumer *
ACE_ENV_ARG_DECL_NOT_USED) = 0;
#endif /* 0 */
};
#include /**/ "ace/post.h"
#endif /* TAO_CEC_PULLING_STRATEGY_H */
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