1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/* -*- C++ -*- */
// $Id$
//
// ============================================================================
//
// = LIBRARY
// ORBSVCS Real-time Event Channel
//
// = FILENAME
// EC_Bitmask_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_BITMASK_FILTER_H
#define TAO_EC_BITMASK_FILTER_H
#include "ace/pre.h"
#include "EC_Filter.h"
#include "event_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_RTEvent_Export TAO_EC_Bitmask_Filter : public TAO_EC_Filter
{
// = TITLE
// The bitmask filter.
//
// = DESCRIPTION
// This filter quickly rejects events that do not match a given
// bitmask.
// If the event is not rejected based on the mask then the child
// is consulted to finally accept or reject the event.
// When composed with the Null_Filter it accepts any events that
// satisfy:
// (event.header.type & type_mask) != 0
// && (event.header.type & source_mask) != 0
//
// = MEMORY MANAGMENT
// It assumes ownership of the child.
//
public:
TAO_EC_Bitmask_Filter (CORBA::ULong source_mask,
CORBA::ULong type_mask,
TAO_EC_Filter* child);
// Constructor.
// Events that do not satisfy:
//
// (e.header.source & source_mask) != 0 &&
// (e.header.type & type_mask) != 0
//
// are immediately rejected, other events are recursively tested
// using the child node.
// It assumes ownership of the child.
virtual ~TAO_EC_Bitmask_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);
private:
ACE_UNIMPLEMENTED_FUNC (TAO_EC_Bitmask_Filter
(const TAO_EC_Bitmask_Filter&))
ACE_UNIMPLEMENTED_FUNC (TAO_EC_Bitmask_Filter& operator=
(const TAO_EC_Bitmask_Filter&))
private:
CORBA::ULong source_mask_;
CORBA::ULong type_mask_;
// The bitmasks
TAO_EC_Filter* child_;
// The children
};
#if defined (__ACE_INLINE__)
#include "EC_Bitmask_Filter.i"
#endif /* __ACE_INLINE__ */
#include "ace/post.h"
#endif /* TAO_EC_BITMASK_FILTER_H */
|
