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// -*- C++ -*-
/**
* @file EC_Kokyu_Dispatching.h
*
* $Id$
*
* @author Bryan Thrall (thrall@cs.wustl.edu)
*
* Based on previous work by Carlos O'Ryan (coryan@cs.wustl.edu) and
* Tim Harrison (harrison@cs.wustl.edu) and other members of the DOC group.
* More details can be found in:
*
* http://doc.ece.uci.edu/~coryan/EC/index.html
*/
#ifndef TAO_EC_KOKYU_DISPATCHING_H
#define TAO_EC_KOKYU_DISPATCHING_H
#include /**/ "ace/pre.h"
#include "EC_Dispatching.h"
#include "EC_ProxySupplier.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "orbsvcs/RtecSchedulerC.h"
#include "rtkokyu_event_export.h"
#include "ace/Thread_Manager.h"
#include "Kokyu/Kokyu.h"
class TAO_EC_Event_Channel_Base;
/**
* @class TAO_EC_Kokyu_Dispatching
*
* @brief Dispatching strategy that minimizes priority inversion.
*
* This strategy uses multiple queues, each serviced by a thread
* at different priority. This minimizes priority inversion
* because the consumers at higher priority are serviced before
* consumers at lower priority.
* It is more flexible than using the supplier thread to dispatch
* because it allows high-priority suppliers to push events to
* low-priority consumers (and vice-versa).
* It also isolates the supplier threads from the time spent on
* upcalls to the consumer objects, making the system easier to
* analyze and schedule.
*/
class TAO_RTKokyuEvent_Export TAO_EC_Kokyu_Dispatching : public TAO_EC_Dispatching
{
public:
/// The scheduler is used to find the range of priorities and similar
/// info.
TAO_EC_Kokyu_Dispatching (TAO_EC_Event_Channel_Base* ec,
int sched_policy,
int sched_scope);
// = The EC_Dispatching methods.
virtual void activate (void);
virtual void shutdown (void);
virtual void push (TAO_EC_ProxyPushSupplier* proxy,
RtecEventComm::PushConsumer_ptr consumer,
const RtecEventComm::EventSet& event,
TAO_EC_QOS_Info& qos_info
ACE_ENV_ARG_DECL);
virtual void push_nocopy (TAO_EC_ProxyPushSupplier* proxy,
RtecEventComm::PushConsumer_ptr consumer,
RtecEventComm::EventSet& event,
TAO_EC_QOS_Info& qos_info
ACE_ENV_ARG_DECL);
private:
ACE_Allocator *allocator_;
void setup_lanes (void);
/// The dispatcher
Kokyu::Dispatcher_Auto_Ptr dispatcher_;
/// The scheduler
RtecScheduler::Scheduler_var scheduler_;
int lanes_setup_;
int disp_sched_policy_;
int disp_sched_scope_;
};
// ****************************************************************
class TAO_RTKokyuEvent_Export TAO_EC_Kokyu_Shutdown_Command : public Kokyu::Dispatch_Command
{
public:
/// Constructor
TAO_EC_Kokyu_Shutdown_Command (ACE_Allocator *allocator);
/// Command callback
virtual int execute (void);
protected:
//Protected so can't be put on stack; must be dynamically allocated
virtual ~TAO_EC_Kokyu_Shutdown_Command (void);
};
// ****************************************************************
class TAO_RTKokyuEvent_Export TAO_EC_Kokyu_Push_Command : public Kokyu::Dispatch_Command
{
public:
/// Constructor
TAO_EC_Kokyu_Push_Command (TAO_EC_ProxyPushSupplier* proxy,
RtecEventComm::PushConsumer_ptr consumer,
RtecEventComm::EventSet& event,
ACE_Allocator* allocator);
/// Command callback
virtual int execute (void);
protected:
//Protected so can't be put on stack; must be dynamically allocated
virtual ~TAO_EC_Kokyu_Push_Command (void);
private:
/// The proxy
TAO_EC_ProxyPushSupplier* proxy_;
/// The consumer connected to the proxy when the event was pushed.
RtecEventComm::PushConsumer_var consumer_;
/// The event
RtecEventComm::EventSet event_;
};
#if defined (__ACE_INLINE__)
#include "EC_Kokyu_Dispatching.i"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* TAO_EC_KOKYU_DISPATCHING_H */
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