epics::pvaClient::PvaClientMultiMonitorDouble Class Reference

Provides a monitor to multiple channels where each channel has a numeric scalar value field. More...

#include "pvaClientMultiChannel.h"

Inheritance diagram for epics::pvaClient::PvaClientMultiMonitorDouble:

Collaboration diagram for epics::pvaClient::PvaClientMultiMonitorDouble:

Public Member Functions
	POINTER_DEFINITIONS (PvaClientMultiMonitorDouble)
	~PvaClientMultiMonitorDouble ()
void	connect ()
	Connect a channel monitor for each channel. More...
bool	poll ()
	Poll each channel. More...
bool	waitEvent (double secondsToWait)
	Wait until poll returns true. More...
epics::pvData::shared_vector< double >	get ()
PvaClientMultiMonitorDoublePtr	getPtrSelf ()
	Monitor the shared pointer to self. More...

Static Public Member Functions
static PvaClientMultiMonitorDoublePtr	create (PvaClientMultiChannelPtr const &pvaClientMultiChannel, PvaClientChannelArray const &pvaClientChannelArray)
	Create a PvaClientMultiMonitorDouble. More...

Detailed Description

Provides a monitor to multiple channels where each channel has a numeric scalar value field.

Definition at line 274 of file pvaClientMultiChannel.h.

Constructor & Destructor Documentation

epics::pvaClient::PvaClientMultiMonitorDouble::~PvaClientMultiMonitorDouble

(

)

Definition at line 49 of file pvaClientMultiMonitorDouble.cpp.

{
    if(PvaClient::getDebug()) cout<< "PvaClientMultiMonitorDouble::~PvaClientMultiMonitorDouble()\n";
}

Member Function Documentation

void epics::pvaClient::PvaClientMultiMonitorDouble::connect

(

)

Connect a channel monitor for each channel.

Definition at line 54 of file pvaClientMultiMonitorDouble.cpp.

{
    shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
    string request = "value";
    for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) {
               pvaClientMonitor[i] = pvaClientChannelArray[i]->createMonitor(request);
               pvaClientMonitor[i]->issueConnect();
         }
    }
    for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) {
               Status status = pvaClientMonitor[i]->waitConnect();
               if(status.isOK()) continue;
               string message = string("channel ") + pvaClientChannelArray[i]->getChannelName()
                   + " PvaChannelMonitor::waitConnect " + status.getMessage();
               throw std::runtime_error(message);
         }
    }
     for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) pvaClientMonitor[i]->start();
    }
    isMonitorConnected = true;
}

PvaClientMultiMonitorDoublePtr epics::pvaClient::PvaClientMultiMonitorDouble::create ( PvaClientMultiChannelPtr const &  pvaClientMultiChannel, PvaClientChannelArray const &  pvaClientChannelArray  )

static

Create a PvaClientMultiMonitorDouble.

Parameters

pvaClientMultiChannel	The interface to PvaClientMultiChannel.
pvaClientChannelArray	The PvaClientChannel array.

Returns

The interface.

Definition at line 27 of file pvaClientMultiMonitorDouble.cpp.

{
    PvaClientMultiMonitorDoublePtr pvaClientMultiMonitorDouble(
         new PvaClientMultiMonitorDouble(pvaMultiChannel,pvaClientChannelArray));
    return pvaClientMultiMonitorDouble;
}

epics::pvData::shared_vector< double > epics::pvaClient::PvaClientMultiMonitorDouble::get

(

)

get the data.

Returns

The double[] where each element is the value field of the corresponding channel.

Definition at line 119 of file pvaClientMultiMonitorDouble.cpp.

{
    return doubleValue;
}

PvaClientMultiMonitorDoublePtr epics::pvaClient::PvaClientMultiMonitorDouble::getPtrSelf ( )

inline

Monitor the shared pointer to self.

Returns

The shared pointer.

Definition at line 316 of file pvaClientMultiChannel.h.

    {
        return shared_from_this();
    }

epics::pvaClient::PvaClientMultiMonitorDouble::POINTER_DEFINITIONS

(

PvaClientMultiMonitorDouble

)

bool epics::pvaClient::PvaClientMultiMonitorDouble::poll

(

)

Poll each channel.

If any has new data it is used to update the double[].

Returns

(false,true) if (no, at least one) value was updated.

Definition at line 82 of file pvaClientMultiMonitorDouble.cpp.

{
    if(!isMonitorConnected){
         connect();
         epicsThreadSleep(.1);
    }
    bool result = false;
    shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
    for(size_t i=0; i<nchannel; ++i)
    {
         if(isConnected[i]) {
              if(pvaClientMonitor[i]->poll()) {
                   doubleValue[i] = pvaClientMonitor[i]->getData()->getDouble();
                   pvaClientMonitor[i]->releaseEvent();
                   result = true;
              }
         }
    }
    return result;
}

bool epics::pvaClient::PvaClientMultiMonitorDouble::waitEvent

(

double

secondsToWait

)

Wait until poll returns true.

Parameters

secondsToWait

The time to keep trying. A thread sleep of .1 seconds occurs between each call to poll.

Returns

(false,true) if (timeOut, poll returned true).

Definition at line 103 of file pvaClientMultiMonitorDouble.cpp.

{
    if(poll()) return true;
    TimeStamp start;
    start.getCurrent();
    TimeStamp now;
    while(true) {
          epicsThreadSleep(.1);
          if(poll()) return true;
          now.getCurrent();
          double diff = TimeStamp::diff(now,start);
          if(diff>=waitForEvent) break;
    }
    return false;
}

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The documentation for this class was generated from the following files:

• modules/pvaClient/src/pv/pvaClientMultiChannel.h
• modules/pvaClient/src/pvaClientMultiMonitorDouble.cpp