UnrealEngine:多线程

FRunnable

 FRunnable是一个线程的接口，提供Init Run等虚函数

 

FRunnableThread

通过FRunnableThread::Create来创建线程，调用Init Run等执行，最后Stop Exit Kill

FRunnableThread* m_Thread = nullptr

 

class MYPROOBJECT_API  MyRunnableObject : public FRunnable

{

public:

　　MyRunnableObject();

　　virtual ~MyRunnableObject();

 

　　int RunTime = 0;

　　bool bIsRunning = false;

 

　　virtual bool Init()

　　{

　　bIsRunning = true;

　　UE_LOG(LogTemp,  Display, Text("Init"));

　　return true;

　　}

 

　　virtual unit32 Run()

　　{

　　while(bIsRunning)

　　{

　　UE_LOG(LogTemp, Display, TEXT("Run"), Runtime);

　　++RunTime;

　　FPlatformProcess::Sleep(1);

　　}

　　return 0;

　　}

 

　　virtual void Stop()

　　{

　　UE_LOG(LogTemp, Display, TEXT("Kill is call FRunnableThread, stop now"));

　　bIsRunning = false;

　　}

 

　　virtual void Exit()

　　{

　　UE_LOG(LogTemp, Display, TEXT("Run finished"));

　　}

};

 

UCLASS()

class MYPROJECT_API AMyProjectGameModeBase : public AGameModeBase
{

　　GENERATED_BODY()

public:

　　virtual vodi BeginPlay();

　　MyRunnableObject* myRunnableObj;

　　FTimerHandle timerHandle;

　　FRunnableThread* myThread;

　　UFUNCTION()

　　void OnTimer();

};

 

void AMyProjectGameModeBase::BeginPlay()

{

　　Super::BeginPlay();

　　myRunnableObj = new MyRunnableObject();

　　myThread = FRunnableThread::Create(myRunnableObj, TEXT("myRunnableObj"));

　　GetWorldTimerManager().SetTimer(timerHandle, this, &AMyProjectGameModeBase::OnTimer, 5.0f);

}

 

void AMyProjectGameModeBase::OnTimer()

{

　　if (myThread)

　　{

　　　　myThread->Kill(true);

　　　　delete myRunnableObj;

　　　　delete myThread;

　　}

}