虛幻4 創建線程

Engine\Engine\Source\Runtime\Core\Public\HAL\ThreadingBase.h

/**
 * Interface for "runnable" objects.
 *
 * A runnable object is an object that is "run" on an arbitrary thread. The call usage pattern is
 * Init(), Run(), Exit(). The thread that is going to "run" this object always uses those calling
 * semantics. It does this on the thread that is created so that any thread specific uses (TLS, etc.)
 * are available in the contexts of those calls. A "runnable" does all initialization in Init().
 *
 * If initialization fails, the thread stops execution and returns an error code. If it succeeds,
 * Run() is called where the real threaded work is done. Upon completion, Exit() is called to allow
 * correct clean up.
 */
class CORE_API FRunnable

實現一個這個類的子類。

Thread = FRunnableThread::Create(param1, ThreadDescription, 128 * 1024, TPri_AboveNormal, FPlatformAffinity::GetPoolThreadMask());

第一個參數就是自己的創建的類的子類的指針。創建線程。

如果只有一個簡單的任務，不用新開線程，直接創建分發一個task就行，會有一個線程去執行。

TGraphTask<FTaskClass>::CreateTask().ConstructAndDispatchWhenReady(this, Parm1,Parm2);

參數爲FTaskClass構造函數的參數。

FTaskClass必須實現一個DoTask函數。