OsPoller.dispatchCompletion

void dispatchCompletion(ULONG_PTR completionKey,  OVERLAPPED *  overlappedPtr,
          size_t bytesTransferred,  DWORD error)

@trusted nothrow

Dispatch a single IOCP completion to its registered handler.

`completionKey`	The completion key identifying the target object.
`overlappedPtr`	Pointer to the OVERLAPPED structure that completed.
`bytesTransferred`	Number of bytes transferred.
`error`	Win32 error code (0 on success).