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Extract state queue into own class. Use in device, plugins

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This commit is contained in:
Alexey Rybalchenko
2019-07-17 15:19:08 +02:00
committed by Dennis Klein
parent 4487b81de8
commit f515eb1100
9 changed files with 159 additions and 129 deletions
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35
fairmq/plugins/DDS/DDS.cxx
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@@ -42,9 +42,6 @@ DDS::DDS(const string& name, const Plugin::Version version, const string& mainta
, fStopCondition()
, fTransitions({ "BIND", "CONNECT", "INIT TASK", "RUN", "STOP", "RESET TASK", "RESET DEVICE" })
, fControllerThread()
, fEvents()
, fEventsMutex()
, fNewEvent()
, fCurrentState(DeviceState::Idle)
, fLastState(DeviceState::Idle)
, fDeviceTerminationRequested(false)
@@ -86,11 +83,7 @@ auto DDS::HandleControl() -> void
// subscribe to device state changes, pushing new state changes into the event queue
SubscribeToDeviceStateChange([&](DeviceState newState) {
{
lock_guard<mutex> lock{fEventsMutex};
fEvents.push(newState);
}
fNewEvent.notify_one();
fStateQueue.Push(newState);
if (newState == DeviceState::Exiting) {
fDeviceTerminationRequested = true;
}
@@ -108,11 +101,11 @@ auto DDS::HandleControl() -> void
});
ChangeDeviceState(DeviceStateTransition::InitDevice);
while (WaitForNextState() != DeviceState::InitializingDevice) {}
while (fStateQueue.WaitForNext() != DeviceState::InitializingDevice) {}
ChangeDeviceState(DeviceStateTransition::CompleteInit);
while (WaitForNextState() != DeviceState::Initialized) {}
while (fStateQueue.WaitForNext() != DeviceState::Initialized) {}
ChangeDeviceState(DeviceStateTransition::Bind);
while (WaitForNextState() != DeviceState::Bound) {}
while (fStateQueue.WaitForNext() != DeviceState::Bound) {}
// in the Initializing state subscribe to receive addresses of connecting channels from DDS
// and propagate addresses of bound channels to DDS.
@@ -126,10 +119,10 @@ auto DDS::HandleControl() -> void
PublishBoundChannels();
ChangeDeviceState(DeviceStateTransition::Connect);
while (WaitForNextState() != DeviceState::DeviceReady) {}
while (fStateQueue.WaitForNext() != DeviceState::DeviceReady) {}
ChangeDeviceState(DeviceStateTransition::InitTask);
while (WaitForNextState() != DeviceState::Ready) {}
while (fStateQueue.WaitForNext() != DeviceState::Ready) {}
ChangeDeviceState(DeviceStateTransition::Run);
// wait until stop signal
@@ -138,6 +131,8 @@ auto DDS::HandleControl() -> void
fStopCondition.wait_for(lock, chrono::seconds(1));
}
LOG(debug) << "Stopping DDS control plugin";
} catch (DeviceErrorState&) {
ReleaseDeviceControl();
} catch (exception& e) {
LOG(error) << "Error: " << e.what() << endl;
return;
@@ -321,7 +316,7 @@ auto DDS::SubscribeForCustomCommands() -> void
} else if (cmd == "INIT DEVICE") {
if (ChangeDeviceState(ToDeviceStateTransition(cmd))) {
fDDSCustomCmd.send(id + ": queued " + cmd + " transition", to_string(senderId));
while (WaitForNextState() != DeviceState::InitializingDevice) {}
while (fStateQueue.WaitForNext() != DeviceState::InitializingDevice) {}
ChangeDeviceState(DeviceStateTransition::CompleteInit);
} else {
fDDSCustomCmd.send(id + ": could not queue " + cmd + " transition", to_string(senderId));
@@ -391,18 +386,6 @@ auto DDS::SubscribeForCustomCommands() -> void
});
}
auto DDS::WaitForNextState() -> DeviceState
{
unique_lock<mutex> lock{fEventsMutex};
while (fEvents.empty()) {
fNewEvent.wait_for(lock, chrono::milliseconds(50));
}
auto result = fEvents.front();
fEvents.pop();
return result;
}
DDS::~DDS()
{
if (fControllerThread.joinable()) {