perf: replace ui.configint() by getint() for Mercurial earlier than 1.9
Before this patch, using ui.configint() prevents perf.py from
measuring performance with Mercurial earlier than 1.9 (or
fa2b596db182), because ui.configint() isn't available in such
Mercurial, even though there are some code paths for Mercurial earlier
than 1.9 in perf.py.
For example, setting "_prereadsize" attribute in perfindex() and
perfnodelookup() is effective only with hg earlier than 1.8 (or
61c9bc3da402).
This patch replaces ui.configint() invocations by newly introduced
getint().
This patch also adds check-perf-code.py an extra check entry to detect
direct usage of ui.configint() in perf.py.
BTW, this patch doesn't choose adding configint() method at runtime by
replacing ui.__class__ like below, even though this is the recommended
way to modern Mercurial extensions.
def uisetup(ui):
if not util.safehasattr(ui, 'configint'):
class uiwrap(ui.__class__):
def configint(self, section, name, ....):
....
ui.__class__ = uiwrap
Because changes to ui.__class__ by uisetup() of loaded extension have
been propagated since 1.6.1 (or d8d0fc3988ca), the recommended way
above doesn't work as expected with Mercurial earlier than it.
#!/usr/bin/env python
#
# check-perf-code - (historical) portability checker for contrib/perf.py
from __future__ import absolute_import
import os
import sys
# write static check patterns here
perfpypats = [
[
(r'(branchmap|repoview)\.subsettable',
"use getbranchmapsubsettable() for early Mercurial"),
(r'\.(vfs|svfs|opener|sopener)',
"use getvfs()/getsvfs() for early Mercurial"),
(r'ui\.configint',
"use getint() instead of ui.configint() for early Mercurial"),
],
# warnings
[
]
]
def modulewhitelist(names):
replacement = [('.py', ''), ('.c', ''), # trim suffix
('mercurial%s' % (os.sep), ''), # trim "mercurial/" path
]
ignored = set(['__init__'])
modules = {}
# convert from file name to module name, and count # of appearances
for name in names:
name = name.strip()
for old, new in replacement:
name = name.replace(old, new)
if name not in ignored:
modules[name] = modules.get(name, 0) + 1
# list up module names, which appear multiple times
whitelist = []
for name, count in modules.items():
if count > 1:
whitelist.append(name)
return whitelist
if __name__ == "__main__":
# in this case, it is assumed that result of "hg files" at
# multiple revisions is given via stdin
whitelist = modulewhitelist(sys.stdin)
assert whitelist, "module whitelist is empty"
# build up module whitelist check from file names given at runtime
perfpypats[0].append(
# this matching pattern assumes importing modules from
# "mercurial" package in the current style below, for simplicity
#
# from mercurial import (
# foo,
# bar,
# baz
# )
((r'from mercurial import [(][a-z0-9, \n#]*\n(?! *%s,|^[ #]*\n|[)])'
% ',| *'.join(whitelist)),
"import newer module separately in try clause for early Mercurial"
))
# import contrib/check-code.py as checkcode
assert 'RUNTESTDIR' in os.environ, "use check-perf-code.py in *.t script"
contribpath = os.path.join(os.environ['RUNTESTDIR'], '..', 'contrib')
sys.path.insert(0, contribpath)
checkcode = __import__('check-code')
# register perf.py specific entry with "checks" in check-code.py
checkcode.checks.append(('perf.py', r'contrib/perf.py$', '',
checkcode.pyfilters, perfpypats))
sys.exit(checkcode.main())