<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def cleanup(self):
 """ Release resources used during memory capture """

        if self.sock is not None:
            self.sock.close()
        if self.outfile is not None:
            self.outfile.close()
        if self.bar is not None:
            self.update_progress(complete=True)