TAO_RTEvent
2.0.8
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The negation filter. More...
#include <EC_Negation_Filter.h>
Public Member Functions | |
TAO_EC_Negation_Filter (TAO_EC_Filter *child) | |
Constructor. It assumes ownership of the child. | |
virtual | ~TAO_EC_Negation_Filter (void) |
Destructor. | |
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) |
virtual int | filter_nocopy (RtecEventComm::EventSet &event, TAO_EC_QOS_Info &qos_info) |
virtual void | push (const RtecEventComm::EventSet &event, TAO_EC_QOS_Info &qos_info) |
virtual void | push_nocopy (RtecEventComm::EventSet &event, TAO_EC_QOS_Info &qos_info) |
virtual void | clear (void) |
virtual CORBA::ULong | max_event_size (void) const |
Returns the maximum size of the events pushed by this filter. | |
virtual int | can_match (const RtecEventComm::EventHeader &header) const |
virtual int | add_dependencies (const RtecEventComm::EventHeader &header, const TAO_EC_QOS_Info &qos_info) |
Private Member Functions | |
TAO_EC_Negation_Filter (const TAO_EC_Negation_Filter &) | |
TAO_EC_Negation_Filter & | operator= (const TAO_EC_Negation_Filter &) |
Private Attributes | |
TAO_EC_Filter * | child_ |
The child. |
The negation filter.
This filter accepts all the events rejected by its child, and rejects any events accepted by the child.
It assumes ownership of its child.
TAO_EC_Negation_Filter::TAO_EC_Negation_Filter | ( | TAO_EC_Filter * | child | ) |
Constructor. It assumes ownership of the child.
TAO_EC_Negation_Filter::~TAO_EC_Negation_Filter | ( | void | ) | [virtual] |
Destructor.
TAO_EC_Negation_Filter::TAO_EC_Negation_Filter | ( | const TAO_EC_Negation_Filter & | ) | [private] |
int TAO_EC_Negation_Filter::add_dependencies | ( | const RtecEventComm::EventHeader & | header, |
const TAO_EC_QOS_Info & | qos_info | ||
) | [virtual] |
This is used for computing the scheduling dependencies:
Leaf filters check if the header could be matched, similar to the can_match() method; if it does they return 1, and 0 otherwise. Intermediate nodes always return 0.
This is used to build precise dependencies between the suppliers and the leaf of the filters that accept that event. Notice that only the nodes doing scheduling recurse through the list, so in configurations that do no require scheduling the recursion stops fairly soon.
Implements TAO_EC_Filter.
TAO_EC_Filter::ChildrenIterator TAO_EC_Negation_Filter::begin | ( | void | ) | const [virtual] |
STL-like iterators Filters follow the Composite pattern. All filters expose the same interface as if they all had children, but for simple filters the iterators return an empty range.
Reimplemented from TAO_EC_Filter.
int TAO_EC_Negation_Filter::can_match | ( | const RtecEventComm::EventHeader & | header | ) | const [virtual] |
Returns 0 if an event with that header could never be accepted. This can used by the suppliers to filter out consumers that couldn't possibly be interested in their events. The rt_info and
Implements TAO_EC_Filter.
void TAO_EC_Negation_Filter::clear | ( | void | ) | [virtual] |
Clear any saved state, must reset and assume no events have been received.
Implements TAO_EC_Filter.
TAO_EC_Filter::ChildrenIterator TAO_EC_Negation_Filter::end | ( | void | ) | const [virtual] |
Reimplemented from TAO_EC_Filter.
int TAO_EC_Negation_Filter::filter | ( | const RtecEventComm::EventSet & | event, |
TAO_EC_QOS_Info & | qos_info | ||
) | [virtual] |
Filter this event, returns 1 if the event is accepted, 0 otherwise. Notice that there are two versions of the method, if the event is not const then filter can take ownership of the event.
Implements TAO_EC_Filter.
int TAO_EC_Negation_Filter::filter_nocopy | ( | RtecEventComm::EventSet & | event, |
TAO_EC_QOS_Info & | qos_info | ||
) | [virtual] |
Implements TAO_EC_Filter.
CORBA::ULong TAO_EC_Negation_Filter::max_event_size | ( | void | ) | const [virtual] |
Returns the maximum size of the events pushed by this filter.
Implements TAO_EC_Filter.
TAO_EC_Negation_Filter& TAO_EC_Negation_Filter::operator= | ( | const TAO_EC_Negation_Filter & | ) | [private] |
void TAO_EC_Negation_Filter::push | ( | const RtecEventComm::EventSet & | event, |
TAO_EC_QOS_Info & | qos_info | ||
) | [virtual] |
This is called by the children when they accept an event and which to pass it up. Notice that there are two versions of the method, if the event is not const then filter can take ownership of the event.
Implements TAO_EC_Filter.
void TAO_EC_Negation_Filter::push_nocopy | ( | RtecEventComm::EventSet & | event, |
TAO_EC_QOS_Info & | qos_info | ||
) | [virtual] |
Implements TAO_EC_Filter.
int TAO_EC_Negation_Filter::size | ( | void | ) | const [virtual] |
Reimplemented from TAO_EC_Filter.
TAO_EC_Filter* TAO_EC_Negation_Filter::child_ [private] |
The child.