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DPL: extra signposts for InitTask callback #13793

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Dec 11, 2024
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DPL: extra signposts for InitTask callback #13793

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8 changes: 8 additions & 0 deletions Framework/Core/src/DataProcessingDevice.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -1008,6 +1008,9 @@ void DataProcessingDevice::InitTask()
auto ref = ServiceRegistryRef{mServiceRegistry};
auto& deviceContext = ref.get<DeviceContext>();
auto& context = ref.get<DataProcessorContext>();

O2_SIGNPOST_ID_FROM_POINTER(cid, device, &context);
O2_SIGNPOST_START(device, cid, "InitTask", "Entering InitTask callback.");
auto& spec = getRunningDevice(mRunningDevice, mServiceRegistry);
auto distinct = DataRelayerHelpers::createDistinctRouteIndex(spec.inputs);
auto& state = ref.get<DeviceState>();
Expand Down Expand Up @@ -1098,10 +1101,13 @@ void DataProcessingDevice::InitTask()
// We will get there.
this->fillContext(mServiceRegistry.get<DataProcessorContext>(ServiceRegistry::globalDeviceSalt()), deviceContext);

O2_SIGNPOST_END(device, cid, "InitTask", "Exiting InitTask callback waiting for the remaining region callbacks.");

auto hasPendingEvents = [&mutex = mRegionInfoMutex, &pendingRegionInfos = mPendingRegionInfos](DeviceContext& deviceContext) {
std::lock_guard<std::mutex> lock(mutex);
return (pendingRegionInfos.empty() == false) || deviceContext.expectedRegionCallbacks > 0;
};
O2_SIGNPOST_START(device, cid, "InitTask", "Waiting for registation events.");
/// We now run an event loop also in InitTask. This is needed to:
/// * Make sure region registration callbacks are invoked
/// on the main thread.
Expand All @@ -1111,10 +1117,12 @@ void DataProcessingDevice::InitTask()
uv_run(state.loop, UV_RUN_ONCE);
// Handle callbacks if any
{
O2_SIGNPOST_EVENT_EMIT(device, cid, "InitTask", "Memory registration event received.");
std::lock_guard<std::mutex> lock(mRegionInfoMutex);
handleRegionCallbacks(mServiceRegistry, mPendingRegionInfos);
}
}
O2_SIGNPOST_END(device, cid, "InitTask", "Done waiting for registration events.");
}

void DataProcessingDevice::fillContext(DataProcessorContext& context, DeviceContext& deviceContext)
Expand Down
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