Mercurial > hg
view contrib/genosxversion.py @ 33799:05264fc9d8d6
util: make nogc effective for CPython
279cd80059d4 made `util.nogc` a no-op. It was to optimize PyPy. But it slows
down CPython if many objects (like 300k+) are created.
For example, running `hg log -r .` without extensions in `hg-committed` with
14k+ obsmarkers have the following times:
before | after
hg | chg | hg | chg
-----------------------------
1.262 | 0.860 | 1.077 | 0.619 (seconds, best of 20 runs)
Therefore let's re-enable nogc for CPython.
Differential Revision: https://phab.mercurial-scm.org/D402
author | Jun Wu <quark@fb.com> |
---|---|
date | Mon, 14 Aug 2017 22:28:59 -0700 |
parents | 283a7da602ae |
children | 25880ddf9a86 |
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#!/usr/bin/env python2 from __future__ import absolute_import, print_function import argparse import json import os import subprocess import sys # Always load hg libraries from the hg we can find on $PATH. hglib = json.loads(subprocess.check_output( ['hg', 'debuginstall', '-Tjson']))[0]['hgmodules'] sys.path.insert(0, os.path.dirname(hglib)) from mercurial import util ap = argparse.ArgumentParser() ap.add_argument('--paranoid', action='store_true', help=("Be paranoid about how version numbers compare and " "produce something that's more likely to sort " "reasonably.")) ap.add_argument('--selftest', action='store_true', help='Run self-tests.') ap.add_argument('versionfile', help='Path to a valid mercurial __version__.py') def paranoidver(ver): """Given an hg version produce something that distutils can sort. Some Mac package management systems use distutils code in order to figure out upgrades, which makes life difficult. The test case is a reduced version of code in the Munki tool used by some large organizations to centrally manage OS X packages, which is what inspired this kludge. >>> paranoidver('3.4') '3.4.0' >>> paranoidver('3.4.2') '3.4.2' >>> paranoidver('3.0-rc+10') '2.9.9999-rc+10' >>> paranoidver('4.2+483-5d44d7d4076e') '4.2.0+483-5d44d7d4076e' >>> paranoidver('4.2.1+598-48d1e1214d8c') '4.2.1+598-48d1e1214d8c' >>> paranoidver('4.3-rc') '4.2.9999-rc' >>> paranoidver('4.3') '4.3.0' >>> from distutils import version >>> class LossyPaddedVersion(version.LooseVersion): ... '''Subclass version.LooseVersion to compare things like ... "10.6" and "10.6.0" as equal''' ... def __init__(self, s): ... self.parse(s) ... ... def _pad(self, version_list, max_length): ... 'Pad a version list by adding extra 0 components to the end' ... # copy the version_list so we don't modify it ... cmp_list = list(version_list) ... while len(cmp_list) < max_length: ... cmp_list.append(0) ... return cmp_list ... ... def __cmp__(self, other): ... if isinstance(other, str): ... other = MunkiLooseVersion(other) ... max_length = max(len(self.version), len(other.version)) ... self_cmp_version = self._pad(self.version, max_length) ... other_cmp_version = self._pad(other.version, max_length) ... return cmp(self_cmp_version, other_cmp_version) >>> def testver(older, newer): ... o = LossyPaddedVersion(paranoidver(older)) ... n = LossyPaddedVersion(paranoidver(newer)) ... return o < n >>> testver('3.4', '3.5') True >>> testver('3.4.0', '3.5-rc') True >>> testver('3.4-rc', '3.5') True >>> testver('3.4-rc+10-deadbeef', '3.5') True >>> testver('3.4.2', '3.5-rc') True >>> testver('3.4.2', '3.5-rc+10-deadbeef') True >>> testver('4.2+483-5d44d7d4076e', '4.2.1+598-48d1e1214d8c') True >>> testver('4.3-rc', '4.3') True >>> testver('4.3', '4.3-rc') False """ major, minor, micro, extra = util.versiontuple(ver, n=4) if micro is None: micro = 0 if extra: if extra.startswith('rc'): if minor == 0: major -= 1 minor = 9 else: minor -= 1 micro = 9999 extra = '-' + extra else: extra = '+' + extra else: extra = '' return '%d.%d.%d%s' % (major, minor, micro, extra) def main(argv): opts = ap.parse_args(argv[1:]) if opts.selftest: import doctest doctest.testmod() return with open(opts.versionfile) as f: for l in f: if l.startswith('version = '): # version number is entire line minus the quotes ver = l[len('version = ') + 1:-2] break if opts.paranoid: print(paranoidver(ver)) else: print(ver) if __name__ == '__main__': main(sys.argv)