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/* -*- C++ -*- */
// $Id$
//
// ============================================================================
//
// = LIBRARY
// ORBSVCS Real-time Event Channel
//
// = FILENAME
// EC_Conjunction_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_CONJUNCTION_FILTER_H
#define TAO_EC_CONJUNCTION_FILTER_H
#include "EC_Filter.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_ORBSVCS_Export TAO_EC_Conjunction_Filter : public TAO_EC_Filter
{
// = TITLE
// The conjunction filter.
//
// = DESCRIPTION
// This filter has a set of children (fixed at creation time), if
// any of the children accepts an event then it also does.
//
// = MEMORY MANAGMENT
// It assumes ownership of the children.
//
public:
TAO_EC_Conjunction_Filter (TAO_EC_Filter* children[],
size_t n);
// Constructor. It assumes ownership of both the array and the
// children.
virtual ~TAO_EC_Conjunction_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);
typedef unsigned int Word;
private:
int all_received (void) const;
// Determine if all the children have received their events.
ACE_UNIMPLEMENTED_FUNC (TAO_EC_Conjunction_Filter
(const TAO_EC_Conjunction_Filter&))
ACE_UNIMPLEMENTED_FUNC (TAO_EC_Conjunction_Filter& operator=
(const TAO_EC_Conjunction_Filter&))
private:
TAO_EC_Filter** children_;
// The children
size_t n_;
// The number of children.
RtecEventComm::EventSet event_;
// The event we send up (once all the children have pushed theirs).
size_t nwords_;
// The number of words in the bit vector
Word* bitvec_;
// The bit vector to keep track of the children that have received
// their events.
ChildrenIterator current_child_;
// The current child in the iteration, used in the push() method...
};
#if defined (__ACE_INLINE__)
#include "EC_Conjunction_Filter.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_EC_CONJUNCTION_FILTER_H */
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