TGraphTask

The user defined task type can take arguments to a constructor. These arguments (unfortunately) must not be references. The API required of TTask:

class FGenericTask { TSomeType SomeArgument; public: FGenericTask(TSomeType InSomeArgument) // CAUTION!: Must not use references in the constructor args; use pointers instead if you need by reference : SomeArgument(InSomeArgument) { / Usually the constructor doesn't do anything except save the arguments for use in DoWork or GetDesiredThread. } ~FGenericTask() { / you will be destroyed immediately after you execute. Might as well do cleanup in DoWork, but you could also use a destructor. } FORCEINLINE TStatId GetStatId() const { RETURN_QUICK_DECLARE_CYCLE_STAT(FGenericTask, STATGROUP_TaskGraphTasks); }

[static] ENamedThreads::Type GetDesiredThread() { return ENamedThreads::[named thread or AnyThread]; } void DoTask(ENamedThreads::Type CurrentThread, const FGraphEventRef& MyCompletionGraphEvent) { / The arguments are useful for setting up other tasks. / Do work here, probably using SomeArgument. MyCompletionGraphEvent->DontCompleteUntil(TGraphTask<FSomeChildTask>::CreateTask(NULL,CurrentThread).ConstructAndDispatchWhenReady()); } }; TGraphTask Embeds a user defined task, as exemplified above, for doing the work and provides the functionality for setting up and handling prerequisites and subsequents