bool ExampleLink::init()
{
initPVRecord();
PVStructurePtr pvStructure = getPVRecordStructure()->getPVStructure();
pvValue = pvStructure->getSubField<PVDoubleArray>("value");
if(!pvValue) {
return false;
}
ChannelProvider::shared_pointer provider =
getChannelProviderRegistry()->getProvider(providerName);
if(!provider) {
cout << getRecordName() << " provider "
<< providerName << " does not exist" << endl;
return false;
}
ChannelRequester::shared_pointer channelRequester =
dynamic_pointer_cast<ChannelRequester>(getPtrSelf());
channel = provider->createChannel(channelName,channelRequester);
event.wait();
if(!status.isOK()) {
cout << getRecordName() << " createChannel failed "
<< status.getMessage() << endl;
return false;
}
PVStructurePtr pvRequest = CreateRequest::create()->createRequest(
"value");
MonitorRequester::shared_pointer monitorRequester =
dynamic_pointer_cast<MonitorRequester>(getPtrSelf());
monitor = channel->createMonitor(monitorRequester,pvRequest);
return true;
}
bool ExampleLink::init()
{
initPVRecord();
PVStructurePtr pvStructure = getPVRecordStructure()->getPVStructure();
pvTimeStamp.attach(pvStructure->getSubField("timeStamp"));
pvAlarm.attach(pvStructure->getSubField("alarm"));
pvValue = static_pointer_cast<PVDoubleArray>(
pvStructure->getScalarArrayField("value",pvDouble));
if(!pvValue) {
return false;
}
ChannelProvider::shared_pointer provider =
getChannelProviderRegistry()->getProvider(providerName);
if(!provider) {
cout << getRecordName() << " provider "
<< providerName << " does not exist" << endl;
return false;
}
ChannelRequester::shared_pointer channelRequester =
dynamic_pointer_cast<ChannelRequester>(getPtrSelf());
channel = provider->createChannel(channelName,channelRequester);
event.wait();
if(!status.isOK()) {
cout << getRecordName() << " createChannel failed "
<< status.getMessage() << endl;
return false;
}
ChannelGetRequester::shared_pointer channelGetRequester =
dynamic_pointer_cast<ChannelGetRequester>(getPtrSelf());
PVStructurePtr pvRequest = CreateRequest::create()->createRequest(
"value,alarm,timeStamp");
channelGet = channel->createChannelGet(channelGetRequester,pvRequest);
event.wait();
if(!status.isOK()) {
cout << getRecordName() << " createChannelGet failed "
<< status.getMessage() << endl;
return false;
}
getPVValue = static_pointer_cast<PVDoubleArray>(
getPVStructure->getScalarArrayField("value",pvDouble));
if(!getPVValue) {
cout << getRecordName() << " get value not PVDoubleArray" << endl;
return false;
}
return true;
}
ServerContext::shared_pointer startPVAServer(std::string const & providerNames, int timeToRun, bool runInSeparateThread, bool printInfo)
{
ServerContextImpl::shared_pointer ctx = ServerContextImpl::create();
// do not override configuration
if (!ctx->isChannelProviderNamePreconfigured())
ctx->setChannelProviderName(providerNames);
ChannelProviderRegistry::shared_pointer channelProviderRegistry = getChannelProviderRegistry();
ctx->initialize(channelProviderRegistry);
if (printInfo)
ctx->printInfo();
if (runInSeparateThread)
{
// delete left to the thread
auto_ptr<ThreadRunnerParam> param(new ThreadRunnerParam());
param->ctx = ctx;
param->timeToRun = timeToRun;
// TODO can this fail?
epicsThreadCreate("startPVAServer",
epicsThreadPriorityMedium,
epicsThreadGetStackSize(epicsThreadStackBig),
threadRunner, param.get());
param.release();
}
else
{
ctx->run(timeToRun);
}
return ctx;
}
