bool ExampleMonitorLinkRecord::init(PvaClientPtr const & pva,string const & channelName,string const & providerName)
{
initPVRecord();
PVStructurePtr pvStructure = getPVRecordStructure()->getPVStructure();
pvValue = pvStructure->getSubField<PVDoubleArray>("value");
if(!pvValue) {
return false;
}
PvaClientChannelPtr pvaClientChannel = pva->channel(channelName,providerName,0.0);
monitorRequester = dynamic_pointer_cast<PvaClientMonitorRequester>(getPtrSelf());
pvaClientMonitor = pvaClientChannel->monitor("value",monitorRequester);
return true;
}
static void exampleDouble(PvaClientPtr const &pvaClient)
{
testDiag("== exampleDouble ==");
PvaClientChannelPtr pvaChannel;
try {
pvaChannel = pvaClient->createChannel("PVRdouble");
pvaChannel->connect(2.0);
testDiag("channel connected");
} catch (std::runtime_error e) {
testAbort("channel connection exception '%s'", e.what());
}
PvaClientPutPtr put;
PvaClientPutDataPtr putData;
try {
put = pvaChannel->createPut();
putData = put->getData();
testDiag("put connected");
if (!putData)
testAbort("NULL data pointer from putGet");
} catch (std::runtime_error e) {
testAbort("put connection exception '%s'", e.what());
}
PvaClientGetPtr get;
PvaClientGetDataPtr getData;
try {
get = pvaChannel->createGet();
getData = get->getData();
testDiag("get connected");
if (!getData)
testAbort("NULL data pointer from putGet");
} catch (std::runtime_error e) {
testAbort("get connection exception '%s'", e.what());
}
PvaClientMonitorRequesterPtr requester(new MyMonitor());
PvaClientMonitorPtr monitor;
expected.set(0); // structure definition
try {
monitor = pvaChannel->monitor(requester);
testDiag("monitor connected");
} catch (std::runtime_error e) {
testAbort("monitor connection exception '%s'", e.what());
}
epicsThreadSleep(0.1); // Allow connection monitor event to fire
expected.clear(); // FIXME: Magic numbers here...
expected.set(1); // value
expected.set(6); // timestamp
try {
for (int i=0; i<5; ++i) {
testDiag("= put %d =", i);
double out = i;
putData->putDouble(out);
put->put();
get->get();
double in = getData->getDouble();
testOk(in == out, "get value matches put");
}
PvaClientProcessPtr process = pvaChannel->createProcess();
process->connect();
testDiag("= process =");
expected.clear(1); // no value change
process->process();
} catch (std::runtime_error e) {
testAbort("exception '%s'", e.what());
}
}