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DDS plugin: Synchronize FillChannelContainers and DDSKeyValue updates

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This was a regression after introducing external control mode in f7cdf5e.
This commit is contained in:
Dennis Klein 2019-07-28 14:31:00 +02:00 committed by Dennis Klein
parent 7b773cde51
commit 9cbccface7
2 changed files with 35 additions and 15 deletions
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46
fairmq/plugins/DDS/DDS.cxx
View File

@ -51,6 +51,7 @@ DDS::DDS(const string& name,
, fLastState(DeviceState::Idle)
, fDeviceTerminationRequested(false)
, fHeartbeatInterval(100)
, fUpdatesAllowed(false)
{
try {
TakeDeviceControl();
@ -85,22 +86,28 @@ auto DDS::HandleControl() -> void
// subscribe to device state changes, pushing new state changes into the event queue
SubscribeToDeviceStateChange([&](DeviceState newState) {
fStateQueue.Push(newState);
switch(newState) {
case DeviceState::Bound:
// Receive addresses of connecting channels from DDS
// and propagate addresses of bound channels to DDS.
FillChannelContainers();
switch (newState) {
case DeviceState::Bound:
// Receive addresses of connecting channels from DDS
// and propagate addresses of bound channels to DDS.
FillChannelContainers();
// publish bound addresses via DDS at keys corresponding to the channel prefixes, e.g. 'data' in data[i]
PublishBoundChannels();
break;
case DeviceState::Exiting:
fDeviceTerminationRequested = true;
UnsubscribeFromDeviceStateChange();
ReleaseDeviceControl();
break;
default:
break;
// publish bound addresses via DDS at keys corresponding to the channel
// prefixes, e.g. 'data' in data[i]
PublishBoundChannels();
break;
case DeviceState::ResettingDevice: {
std::lock_guard<std::mutex> lk(fUpdateMutex);
fUpdatesAllowed = false;
break;
}
case DeviceState::Exiting:
fDeviceTerminationRequested = true;
UnsubscribeFromDeviceStateChange();
ReleaseDeviceControl();
break;
default:
break;
}
lock_guard<mutex> lock{fStateChangeSubscriberMutex};
@ -197,6 +204,11 @@ auto DDS::FillChannelContainers() -> void
LOG(debug) << "dds-i-n: adding " << chanName << " -> i: " << i << " n: " << n;
fIofN.insert(make_pair(chanName, IofN(i, n)));
}
{
std::lock_guard<std::mutex> lk(fUpdateMutex);
fUpdatesAllowed = true;
}
fUpdateCondition.notify_one();
} catch (const exception& e) {
LOG(error) << "Error filling channel containers: " << e.what();
}
@ -209,6 +221,10 @@ auto DDS::SubscribeForConnectingChannels() -> void
fDDS.SubscribeKeyValue([&] (const string& propertyId, const string& value, uint64_t senderTaskID) {
try {
LOG(debug) << "Received update for " << propertyId << ": value=" << value << ", senderTaskID=" << senderTaskID;
std::unique_lock<std::mutex> lk(fUpdateMutex);
fUpdateCondition.wait(lk, [&]{ return fUpdatesAllowed; });
string val = value;
// check if it is to handle as one out of multiple values
auto it = fIofN.find(propertyId);

4
fairmq/plugins/DDS/DDS.h
View File

@ -163,6 +163,10 @@ class DDS : public Plugin
std::thread fHeartbeatThread;
std::chrono::milliseconds fHeartbeatInterval;
bool fUpdatesAllowed;
std::mutex fUpdateMutex;
std::condition_variable fUpdateCondition;
};
Plugin::ProgOptions DDSProgramOptions()