pvac::Monitor Struct Reference

Handle for monitor subscription. More...

#include <client/pva/client.h>

Inheritance diagram for pvac::Monitor:

Public Member Functions
	Monitor (const std::tr1::shared_ptr< Impl > &)
std::string	name () const
	Channel name.
void	cancel ()
	Immediate cancellation. More...
bool	poll ()
	updates root, changed, overrun More...
bool	complete () const
	true if all events received. More...
bool	valid () const
	operator bool_type () const
void	reset ()

Public Attributes
epics::pvData::PVStructure::const_shared_pointer	root
	Monitor update data. More...
epics::pvData::BitSet	changed
epics::pvData::BitSet	overrun

Friends
struct	MonitorSync
friend::std::ostream &	operator<< (::std::ostream &strm, const Monitor &op)

Detailed Description

Handle for monitor subscription.

Definition at line 117 of file client.h.

Member Function Documentation

void pvac::Monitor::cancel

(

)

Immediate cancellation.

Does not wait for remote confirmation.

Since

Up to 7.0.0 also cleared root, changed, and overrun. After 7.0.0, these data members are left unchanged.

bool pvac::Monitor::complete

(

)

const

true if all events received.

Check after poll()==false

bool pvac::Monitor::poll

(

)

updates root, changed, overrun

Returns

true if a new update was extracted from the queue.

Note

This method does not block.

MonitorEvent::Data will not be repeated until poll()==false.

Postcondition

root!=NULL (after version 6.0.0)

root!=NULL iff poll()==true (In version 6.0.0)

Member Data Documentation

epics::pvData::PVStructure::const_shared_pointer pvac::Monitor::root

Monitor update data.

After version 6.0.0

Initially NULL, becomes !NULL the first time poll()==true. The PVStructure pointed to be root will presist until Monitor reconnect w/ type change. This can be detected by comparing root.get(). references to root may be cached subject to this test.

In version 6.0.0

NULL except after poll()==true. poll()==false sets root=NULL. references to root should not be stored between calls to poll().

Definition at line 160 of file client.h.

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The documentation for this struct was generated from the following file:

• client/pva/client.h