SubProcess.py 文件源码

def elapsed(self):
        """
        Returns the elapsed time (as a float) of the threaded execution which
        includes the number of microseconds.

        """
        if self._execution_begin is None:
            # No elapsed time has taken place yet
            return 0.0

        if self._execution_finish is not None:
            # Execution has completed, we only want to calculate
            # the execution time.
            elapsed_time = self._execution_finish - self._execution_begin

        else:
            # Calculate Elapsed Time
            elapsed_time = datetime.utcnow() - self._execution_begin

        elapsed_time = (elapsed_time.days * 86400) \
                         + elapsed_time.seconds \
                         + (elapsed_time.microseconds/1e6)

        return elapsed_time