UE4动态stats

DynamicStats.h

//DynamicStats.h
# pragma once

# if STATS

DECLARE_STATS_GROUP(TEXT("Dynamic"), STATGROUP_Dynamic, STATCAT_Advanced);

class FDynamicScopeCycleStatIdContainer : public TThreadSingleton<FDynamicScopeCycleStatIdContainer>
{
public:
	TStatId GetStatId(FString FunctionName)
	{
		if (FunctionStatIdMap.Contains(FunctionName))
		{
			return FunctionStatIdMap[FunctionName];
		}
		else
		{
			TStatId statID = FDynamicStats::CreateStatId<FStatGroup_STATGROUP_Dynamic>(FunctionName);
			FunctionStatIdMap.Add(FunctionName, statID);
			return statID;
		}
	}
	
private:
	TMap<FString, TStatId> FunctionStatIdMap;
};

class FDynamicScopeCycleCounter : public FCycleCounter
{
public:
	FDynamicScopeCycleCounter(FString FunctionName)
	{
		TStatId statID = GetStatIdForFunction("[Dynamic]" + FunctionName);
		if (FThreadStats::IsCollectingData(statID))
		{
			Start(statID);
		}
	}
	~FDynamicScopeCycleCounter()
	{
		Stop();
	}
private:
	TStatId GetStatIdForFunction(FString FunctionName)
	{
		return FDynamicScopeCycleStatIdContainer::Get().GetStatId(FunctionName);
	}
};
# if UE_BUILD_TEST || UE_EDITOR
# define DYNAMIC_SCOPE_CYCLE_COUNTER(Name, ShowName) \
FDynamicScopeCycleCounter Name##Counter(ShowName);
# else
# define DYNAMIC_SCOPE_CYCLE_COUNTER(Name, ShowName)
# endif
# else
# define DYNAMIC_SCOPE_CYCLE_COUNTER(Name, ShowName)
# endif