Function main

misc/perf_compare.py:115–269

()

def main() -> None:
    whole_program_time_0 = time.time()
    parser = argparse.ArgumentParser(
        formatter_class=argparse.RawDescriptionHelpFormatter,
        description=__doc__,
        epilog="Remember: you usually want the first argument to this command to be 'master'.",
    )
    parser.add_argument(
        "--incremental",
        default=False,
        action="store_true",
        help="measure incremental run (fully cached)",
    )
    parser.add_argument(
        "--multi-file",
        default=False,
        action="store_true",
        help="compile each mypy module to a separate C file (reduces RAM use)",
    )
    parser.add_argument(
        "--dont-setup",
        default=False,
        action="store_true",
        help="don't make the clones or compile mypy, just run the performance measurement benchmark "
        + "(this will fail unless the clones already exist, such as from a previous run that was canceled before it deleted them)",
    )
    parser.add_argument(
        "--num-runs",
        metavar="N",
        default=15,
        type=int,
        help="set number of measurements to perform (default=15)",
    )
    parser.add_argument(
        "-j",
        metavar="N",
        default=4,
        type=int,
        help="set maximum number of parallel builds (default=4) -- high numbers require a lot of RAM!",
    )
    parser.add_argument(
        "-r",
        metavar="FOREIGN_REPOSITORY",
        default=None,
        type=str,
        help="measure time to typecheck the project at FOREIGN_REPOSITORY instead of mypy self-check; "
        + "the provided value must be the URL or path of a git repo "
        + "(note that this script will take no special steps to *install* the foreign repo, so you will probably get a lot of missing import errors)",
    )
    parser.add_argument(
        "-c",
        metavar="CODE",
        default=None,
        type=str,
        help="measure time to type check Python code fragment instead of mypy self-check",
    )
    parser.add_argument(
        "commit",