task.py 文件源码

def is_task_done(self):
        """
        Queries the status of the task and indicates if it completed
        execution. Use this function to ensure that the specified
        operation is complete before you stop the task.

        Returns:
            bool:

            Indicates if the measurement or generation completed.
        """
        is_task_done = c_bool32()

        cfunc = lib_importer.windll.DAQmxIsTaskDone
        if cfunc.argtypes is None:
            with cfunc.arglock:
                if cfunc.argtypes is None:
                    cfunc.argtypes = [
                        lib_importer.task_handle, ctypes.POINTER(c_bool32)]

        error_code = cfunc(
            self._handle, ctypes.byref(is_task_done))
        check_for_error(error_code)

        return is_task_done.value