Function _run_ngspice

SLiCAP/SLiCAPngspice.py:304–326

Run ngspice as a direct child process so it can be reliably terminated. :param args: ngspice command and arguments as a list (run without a shell, so the timeout kills ngspice itself, not just a shell wrapper). :param stdout_path: file to receive ngspice console output, or

(args, stdout_path=None, timeout=None)

        return output

def _run_ngspice(args, stdout_path=None, timeout=None):
    """Run ngspice as a direct child process so it can be reliably terminated.

    :param args: ngspice command and arguments as a list (run without a shell,
                 so the timeout kills ngspice itself, not just a shell wrapper).
    :param stdout_path: file to receive ngspice console output, or None to inherit.
    :param timeout: seconds before the job is killed, or None for no limit
                    (default; identical to the previous os.system behaviour).
    :return: True if ngspice completed, False if it timed out or could not run.
    """
    out = open(stdout_path, 'w') if stdout_path is not None else None
    try:
        subprocess.run(args, stdout=out, timeout=timeout)
        return True
    except subprocess.TimeoutExpired:
        print("ERROR: NGspice exceeded the {} s time limit and was terminated.".format(timeout))
        return False
    except FileNotFoundError:
        print("ERROR: NGspice cannot be executed with: '{}'.".format(ini.ngspice))
        return False
    finally:
        if out is not None:
            out.close()


def ngspice2traces(cirFile, simCmd, namesDict, stepCmd=None, parList=None,