TAO_EC_Kokyu_Filter Class Reference

Decorate a filter with scheduling information. More...

#include <EC_Kokyu_Filter.h>

Inheritance diagram for TAO_EC_Kokyu_Filter:

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Collaboration diagram for TAO_EC_Kokyu_Filter:

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List of all members.

Public Member Functions

 TAO_EC_Kokyu_Filter (const char *name, RtecScheduler::handle_t rt_info, RtecScheduler::Scheduler_ptr scheduler, TAO_EC_Filter *body, RtecScheduler::handle_t body_info, RtecScheduler::handle_t parent_info, RtecScheduler::Info_Type_t info_type)
virtual ~TAO_EC_Kokyu_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 ACE_ENV_ARG_DECL)
virtual int filter_nocopy (RtecEventComm::EventSet &event, TAO_EC_QOS_Info &qos_info ACE_ENV_ARG_DECL)
virtual void push (const RtecEventComm::EventSet &event, TAO_EC_QOS_Info &qos_info ACE_ENV_ARG_DECL)
virtual void push_nocopy (RtecEventComm::EventSet &event, TAO_EC_QOS_Info &qos_info ACE_ENV_ARG_DECL)
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 ACE_ENV_ARG_DECL)
virtual void get_qos_info (TAO_EC_QOS_Info &qos_info ACE_ENV_ARG_DECL)

Private Member Functions

 TAO_EC_Kokyu_Filter (const TAO_EC_Kokyu_Filter &)
TAO_EC_Kokyu_Filteroperator= (const TAO_EC_Kokyu_Filter &)
void init_rt_info (ACE_ENV_SINGLE_ARG_DECL)
 Initialize our RT_Info handle and dependencies.
void compute_qos_info (TAO_EC_QOS_Info &qos_info ACE_ENV_ARG_DECL)
 Compute a new qos_info to push up.

Private Attributes

RtecScheduler::handle_t rt_info_
 The RT_Info handle for this object.
int rt_info_computed_
 Has the Scheduler been updated?
ACE_CString name_
 Our operation name.
RtecScheduler::Scheduler_var scheduler_
 The scheduler we are going to use.
TAO_EC_Filterbody_
 The implementation.
RtecScheduler::handle_t body_info_
 The RT_Info handle for the body.
RtecScheduler::handle_t parent_info_
 The RT_Info handle for the parent.
RtecScheduler::Info_Type_t info_type_
 Required for the scheduling service.

Detailed Description

Decorate a filter with scheduling information.

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 Management

It assumes ownership of the children.


Constructor & Destructor Documentation

TAO_EC_Kokyu_Filter::TAO_EC_Kokyu_Filter const char *  name,
RtecScheduler::handle_t  rt_info,
RtecScheduler::Scheduler_ptr  scheduler,
TAO_EC_Filter body,
RtecScheduler::handle_t  body_info,
RtecScheduler::handle_t  parent_info,
RtecScheduler::Info_Type_t  info_type
 

Constructor. It assumes ownership of the body, makes a copy of the other parameters

TAO_EC_Kokyu_Filter::~TAO_EC_Kokyu_Filter void   )  [virtual]
 

Destructor.

TAO_EC_Kokyu_Filter::TAO_EC_Kokyu_Filter const TAO_EC_Kokyu_Filter  )  [private]
 


Member Function Documentation

int TAO_EC_Kokyu_Filter::add_dependencies const RtecEventComm::EventHeader header,
const TAO_EC_QOS_Info &qos_info  ACE_ENV_ARG_DECL
[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_Kokyu_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_Kokyu_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_Kokyu_Filter::clear void   )  [virtual]
 

Clear any saved state, must reset and assume no events have been received.

Implements TAO_EC_Filter.

void TAO_EC_Kokyu_Filter::compute_qos_info TAO_EC_QOS_Info &qos_info  ACE_ENV_ARG_DECL  )  [private]
 

Compute a new qos_info to push up.

TAO_EC_Filter::ChildrenIterator TAO_EC_Kokyu_Filter::end void   )  const [virtual]
 

Reimplemented from TAO_EC_Filter.

int TAO_EC_Kokyu_Filter::filter const RtecEventComm::EventSet event,
TAO_EC_QOS_Info &qos_info  ACE_ENV_ARG_DECL
[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.

Attention:
There seems to be a disparity in interfaces: Supplier always push event sets of size 1 to the EC_ProxyPushSupplier, and EC_Filters do not implement handling of sets of more than 1 event. Then, why is this not enforced by the interface by having EC_ProxyPushSupplier take an event rather than a set?

Implements TAO_EC_Filter.

int TAO_EC_Kokyu_Filter::filter_nocopy RtecEventComm::EventSet event,
TAO_EC_QOS_Info &qos_info  ACE_ENV_ARG_DECL
[virtual]
 

Implements TAO_EC_Filter.

void TAO_EC_Kokyu_Filter::get_qos_info TAO_EC_QOS_Info &qos_info  ACE_ENV_ARG_DECL  )  [virtual]
 

Obtain the QOS information for this filter, the default implementation returns an invalid QOS. Only the filters that support scheduling information implement this method.

Returns:
Returns 0 on success and -1 on failure

Reimplemented from TAO_EC_Filter.

void TAO_EC_Kokyu_Filter::init_rt_info ACE_ENV_SINGLE_ARG_DECL   )  [private]
 

Initialize our RT_Info handle and dependencies.

CORBA::ULong TAO_EC_Kokyu_Filter::max_event_size void   )  const [virtual]
 

Returns the maximum size of the events pushed by this filter.

Implements TAO_EC_Filter.

TAO_EC_Kokyu_Filter& TAO_EC_Kokyu_Filter::operator= const TAO_EC_Kokyu_Filter  )  [private]
 

void TAO_EC_Kokyu_Filter::push const RtecEventComm::EventSet event,
TAO_EC_QOS_Info &qos_info  ACE_ENV_ARG_DECL
[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_Kokyu_Filter::push_nocopy RtecEventComm::EventSet event,
TAO_EC_QOS_Info &qos_info  ACE_ENV_ARG_DECL
[virtual]
 

Implements TAO_EC_Filter.

int TAO_EC_Kokyu_Filter::size void   )  const [virtual]
 

Reimplemented from TAO_EC_Filter.


Member Data Documentation

TAO_EC_Filter* TAO_EC_Kokyu_Filter::body_ [private]
 

The implementation.

RtecScheduler::handle_t TAO_EC_Kokyu_Filter::body_info_ [private]
 

The RT_Info handle for the body.

RtecScheduler::Info_Type_t TAO_EC_Kokyu_Filter::info_type_ [private]
 

Required for the scheduling service.

ACE_CString TAO_EC_Kokyu_Filter::name_ [private]
 

Our operation name.

RtecScheduler::handle_t TAO_EC_Kokyu_Filter::parent_info_ [private]
 

The RT_Info handle for the parent.

RtecScheduler::handle_t TAO_EC_Kokyu_Filter::rt_info_ [private]
 

The RT_Info handle for this object.

int TAO_EC_Kokyu_Filter::rt_info_computed_ [private]
 

Has the Scheduler been updated?

RtecScheduler::Scheduler_var TAO_EC_Kokyu_Filter::scheduler_ [private]
 

The scheduler we are going to use.


The documentation for this class was generated from the following files:
Generated on Wed Nov 23 16:18:42 2005 for TAO_RTEvent by  doxygen 1.4.5