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/* -*- C++ -*- */
// $Id$
//
// ============================================================================
//
// = LIBRARY
// ORBSVCS Real-time Event Channel
//
// = FILENAME
// EC_Sched_Filter
//
// = AUTHOR
// Carlos O'Ryan (coryan@cs.wustl.edu)
//
// = CREDITS
// Based on previous work by Tim Harrison (harrison@cs.wustl.edu)
// and other members of the DOC group.
// More details can be found in:
// http://www.cs.wustl.edu/~schmidt/oopsla.ps.gz
// http://www.cs.wustl.edu/~schmidt/JSAC-98.ps.gz
//
//
// ============================================================================
#ifndef TAO_EC_SCHED_FILTER_H
#define TAO_EC_SCHED_FILTER_H
#include "orbsvcs/RtecSchedulerC.h"
#include "EC_Filter.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_ORBSVCS_Export TAO_EC_Sched_Filter : public TAO_EC_Filter
{
// = TITLE
// Decorate a filter with scheduling information
//
// = DESCRIPTION
// This filter decorates a regular filter with scheduling
// information. It creates a new RT_Info entry for the filter and
// it adds the dependencies between the filter and any childrens
// it may have.
//
// = MEMORY MANAGMENT
// It assumes ownership of the children.
//
public:
TAO_EC_Sched_Filter (const char* name,
RtecScheduler::Scheduler_ptr scheduler,
TAO_EC_Filter* body,
RtecScheduler::handle_t body_info,
RtecScheduler::Info_Type_t info_type);
// Constructor.
// It assumes ownership of the <body>, makes a copy of the other
// parameters
virtual ~TAO_EC_Sched_Filter (void);
// Destructor
// = The TAO_EC_Filter methods, please check the documentation in
// TAO_EC_Filter.
virtual ChildrenIterator begin (void) const;
virtual ChildrenIterator end (void) const;
virtual int size (void) const;
virtual int filter (const RtecEventComm::EventSet& event,
TAO_EC_QOS_Info& qos_info,
CORBA::Environment& env);
virtual int filter_nocopy (RtecEventComm::EventSet& event,
TAO_EC_QOS_Info& qos_info,
CORBA::Environment& env);
virtual void push (const RtecEventComm::EventSet& event,
TAO_EC_QOS_Info& qos_info,
CORBA::Environment& env);
virtual void push_nocopy (RtecEventComm::EventSet& event,
TAO_EC_QOS_Info& qos_info,
CORBA::Environment& env);
virtual void clear (void);
virtual CORBA::ULong max_event_size (void) const;
virtual int can_match (const RtecEventComm::EventHeader& header) const;
virtual int add_dependencies (const RtecEventComm::EventHeader& header,
const TAO_EC_QOS_Info &qos_info,
CORBA::Environment &ACE_TRY_ENV);
virtual void get_qos_info (TAO_EC_QOS_Info& qos_info,
CORBA::Environment &ACE_TRY_ENV);
private:
ACE_UNIMPLEMENTED_FUNC (TAO_EC_Sched_Filter
(const TAO_EC_Sched_Filter&))
ACE_UNIMPLEMENTED_FUNC (TAO_EC_Sched_Filter& operator=
(const TAO_EC_Sched_Filter&))
void init_rt_info (CORBA::Environment& env);
// Initialize our RT_Info handle and dependencies
void compute_qos_info (TAO_EC_QOS_Info& qos_info,
CORBA::Environment &ACE_TRY_ENV);
// Compute a new qos_info to push up.
private:
RtecScheduler::handle_t rt_info_;
// The RT_Info handle for this object
ACE_CString name_;
// Our operation name
RtecScheduler::Scheduler_var scheduler_;
// The scheduler we are going to use
TAO_EC_Filter* body_;
// The implementation
RtecScheduler::handle_t body_info_;
// The RT_Info handle for the body
RtecScheduler::Info_Type_t info_type_;
// Required for the scheduling service
};
#if defined (__ACE_INLINE__)
#include "EC_Sched_Filter.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_EC_SCHED_FILTER_H */
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