Mercurial > hg
view contrib/python3-ratchet.py @ 41247:a89b20a49c13
rust-cpython: using MissingAncestors from Python code
As precedently done with LazyAncestors on cpython.rs, we test for the
presence of the 'rustext' module.
incrementalmissingrevs() has two callers within the Mercurial core:
`setdiscovery.partialdiscovery` and the `only()` revset.
This move shows a significant discovery performance improvement
in cases where the baseline is slow: using perfdiscovery on the PyPy
repos, prepared with `contrib/discovery-helper <repo> 50 100`, we
get averaged medians of 403ms with the Rust version vs 742ms without
(about 45% better).
But there are still indications that performance can be worse in cases
the baseline is fast, possibly due to the conversion from Python to
Rust and back becoming the bottleneck. We could measure this on
mozilla-central in cases were the delta is just a few changesets.
This requires confirmation, but if that's the reason, then an
upcoming `partialdiscovery` fully in Rust should solve the problem.
Differential Revision: https://phab.mercurial-scm.org/D5551
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Fri, 30 Nov 2018 14:35:57 +0100 |
parents | 3790610c2793 |
children | 2372284d9457 |
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# Copyright 2012 Facebook # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """Find tests that newly pass under Python 3. The approach is simple: we maintain a whitelist of Python 3 passing tests in the repository, and periodically run all the /other/ tests and look for new passes. Any newly passing tests get automatically added to the whitelist. You probably want to run it like this: $ cd tests $ python3 ../contrib/python3-ratchet.py \ > --working-tests=../contrib/python3-whitelist """ from __future__ import print_function from __future__ import absolute_import import argparse import json import os import subprocess import sys _hgenv = dict(os.environ) _hgenv.update({ 'HGPLAIN': '1', }) _HG_FIRST_CHANGE = '9117c6561b0bd7792fa13b50d28239d51b78e51f' def _runhg(*args): return subprocess.check_output(args, env=_hgenv) def _is_hg_repo(path): return _runhg('hg', 'log', '-R', path, '-r0', '--template={node}').strip() == _HG_FIRST_CHANGE def _py3default(): if sys.version_info[0] >= 3: return sys.executable return 'python3' def main(argv=()): p = argparse.ArgumentParser() p.add_argument('--working-tests', help='List of tests that already work in Python 3.') p.add_argument('--commit-to-repo', help='If set, commit newly fixed tests to the given repo') p.add_argument('-j', default=os.sysconf(r'SC_NPROCESSORS_ONLN'), type=int, help='Number of parallel tests to run.') p.add_argument('--python3', default=_py3default(), help='python3 interpreter to use for test run') p.add_argument('--commit-user', default='python3-ratchet@mercurial-scm.org', help='Username to specify when committing to a repo.') opts = p.parse_args(argv) if opts.commit_to_repo: if not _is_hg_repo(opts.commit_to_repo): print('abort: specified repository is not the hg repository') sys.exit(1) if not opts.working_tests or not os.path.isfile(opts.working_tests): print('abort: --working-tests must exist and be a file (got %r)' % opts.working_tests) sys.exit(1) elif opts.commit_to_repo: root = _runhg('hg', 'root').strip() if not opts.working_tests.startswith(root): print('abort: if --commit-to-repo is given, ' '--working-tests must be from that repo') sys.exit(1) try: subprocess.check_call([opts.python3, '-c', 'import sys ; ' 'assert ((3, 5) <= sys.version_info < (3, 6) ' 'or sys.version_info >= (3, 6, 2))']) except subprocess.CalledProcessError: print('warning: Python 3.6.0 and 3.6.1 have ' 'a bug which breaks Mercurial') print('(see https://bugs.python.org/issue29714 for details)') sys.exit(1) rt = subprocess.Popen([opts.python3, 'run-tests.py', '-j', str(opts.j), '--blacklist', opts.working_tests, '--json']) rt.wait() with open('report.json') as f: data = f.read() report = json.loads(data.split('=', 1)[1]) newpass = set() for test, result in report.items(): if result['result'] != 'success': continue # A new passing test! Huzzah! newpass.add(test) if newpass: # We already validated the repo, so we can just dive right in # and commit. if opts.commit_to_repo: print(len(newpass), 'new passing tests on Python 3!') with open(opts.working_tests) as f: oldpass = {l for l in f.read().splitlines() if l} with open(opts.working_tests, 'w') as f: for p in sorted(oldpass | newpass): f.write('%s\n' % p) _runhg('hg', 'commit', '-R', opts.commit_to_repo, '--user', opts.commit_user, '--message', 'python3: expand list of passing tests') else: print('Newly passing tests:', '\n'.join(sorted(newpass))) sys.exit(2) if __name__ == '__main__': main(sys.argv[1:])