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diff: do not concatenate immutable bytes while building a/b bodies (issue6445)...
diff: do not concatenate immutable bytes while building a/b bodies (issue6445) Use bytearray instead. I don't know what's changed since Python 2, but bytes concatenation is 100x slow on Python 3. % python2.7 -m timeit -s "s = b''" "for i in range(10000): s += b'line'" 1000 loops, best of 3: 321 usec per loop % python3.9 -m timeit -s "s = b''" "for i in range(10000): s += b'line'" 5 loops, best of 5: 39.2 msec per loop Benchmark using tailwind.css (measuring the fast path, a is empty): % HGRCPATH=/dev/null python2.7 ./hg log -R /tmp/issue6445 -p --time \ --color=always --config diff.word-diff=true >/dev/null (prev) time: real 1.580 secs (user 1.560+0.000 sys 0.020+0.000) (this) time: real 1.610 secs (user 1.570+0.000 sys 0.030+0.000) % HGRCPATH=/dev/null python3.9 ./hg log -R /tmp/issue6445 -p --time \ --color=always --config diff.word-diff=true >/dev/null (prev) time: real 114.500 secs (user 114.460+0.000 sys 0.030+0.000) (this) time: real 2.180 secs (user 2.140+0.000 sys 0.040+0.000) Benchmark using random tabular text data (not the fast path): % dd if=/dev/urandom bs=1k count=1000 | hexdump -v -e '16/1 "%3u," "\n"' > ttf % hg ci -ma % dd if=/dev/urandom bs=1k count=1000 | hexdump -v -e '16/1 "%3u," "\n"' > ttf % hg ci -mb % HGRCPATH=/dev/null python2.7 ./hg log -R /tmp/issue6445 -p --time \ --color=always --config diff.word-diff=true >/dev/null (prev) time: real 3.240 secs (user 3.040+0.000 sys 0.200+0.000 (this) time: real 3.230 secs (user 3.070+0.000 sys 0.160+0.000) % HGRCPATH=/dev/null python3.9 ./hg log -R /tmp/issue6445 -p --time \ --color=always --config diff.word-diff=true >/dev/null (prev) time: real 44.130 secs (user 43.850+0.000 sys 0.270+0.000) (this) time: real 4.170 secs (user 3.850+0.000 sys 0.310+0.000)

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scmwindows.py
81 lines | 2.4 KiB | text/x-python | PythonLexer
Gregory Szorc
scmwindows: use absolute_import
r27481 from __future__ import absolute_import
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690 import os
Gregory Szorc
scmwindows: use absolute_import
r27481
from . import (
Pulkit Goyal
py3: replace os.environ with encoding.environ (part 4 of 5)
r30637 encoding,
Pulkit Goyal
py3: replace os.pathsep with pycompat.ospathsep...
r30612 pycompat,
Gregory Szorc
scmwindows: use absolute_import
r27481 util,
Yuya Nishihara
scmutil: move util.termwidth()...
r30309 win32,
Gregory Szorc
scmwindows: use absolute_import
r27481 )
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690
Pulkit Goyal
py3: conditionalize _winreg import...
r29760 try:
Matt Harbison
windows: suppress pytype warnings for Windows imports and functions...
r44207 import _winreg as winreg # pytype: disable=import-error
Augie Fackler
style: run a patched black on a subset of mercurial...
r43345
Pulkit Goyal
py3: conditionalize _winreg import...
r29760 winreg.CloseKey
except ImportError:
Matt Harbison
windows: suppress pytype warnings for Windows imports and functions...
r44207 # py2 only
import winreg # pytype: disable=import-error
Pulkit Goyal
py3: conditionalize _winreg import...
r29760
Yuya Nishihara
pager: use less as a fallback on Unix...
r32078 # MS-DOS 'more' is the only pager available by default on Windows.
Augie Fackler
formatting: byteify all mercurial/ and hgext/ string literals...
r43347 fallbackpager = b'more'
Yuya Nishihara
pager: use less as a fallback on Unix...
r32078
Augie Fackler
style: run a patched black on a subset of mercurial...
r43345
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690 def systemrcpath():
'''return default os-specific hgrc search path'''
rcpath = []
Yuya Nishihara
rcutil: directly call win32.executablepath()...
r37113 filename = win32.executablepath()
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690 # Use mercurial.ini found in directory with hg.exe
Augie Fackler
formatting: byteify all mercurial/ and hgext/ string literals...
r43347 progrc = os.path.join(os.path.dirname(filename), b'mercurial.ini')
Mads Kiilerich
windows: read all global config files, not just the first (issue4491) (BC)...
r26625 rcpath.append(progrc)
Matt Harbison
windows: factor the hgrc directory scan into a function...
r44377
def _processdir(progrcd):
if os.path.isdir(progrcd):
for f, kind in util.listdir(progrcd):
if f.endswith(b'.rc'):
rcpath.append(os.path.join(progrcd, f))
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690 # Use hgrc.d found in directory with hg.exe
Matt Harbison
windows: factor the hgrc directory scan into a function...
r44377 _processdir(os.path.join(os.path.dirname(filename), b'hgrc.d'))
Matt Harbison
windows: add a global equivalent to /etc/mercurial for *.rc processing...
r44403 # treat a PROGRAMDATA directory as equivalent to /etc/mercurial
programdata = encoding.environ.get(b'PROGRAMDATA')
if programdata:
programdata = os.path.join(programdata, b'Mercurial')
_processdir(os.path.join(programdata, b'hgrc.d'))
ini = os.path.join(programdata, b'mercurial.ini')
if os.path.isfile(ini):
rcpath.append(ini)
ini = os.path.join(programdata, b'hgrc')
if os.path.isfile(ini):
rcpath.append(ini)
Matt Harbison
windows: clarify a comment about the hgrc search path...
r44375 # next look for a system rcpath in the registry
Augie Fackler
style: run a patched black on a subset of mercurial...
r43345 value = util.lookupreg(
Augie Fackler
formatting: byteify all mercurial/ and hgext/ string literals...
r43347 b'SOFTWARE\\Mercurial', None, winreg.HKEY_LOCAL_MACHINE
Augie Fackler
style: run a patched black on a subset of mercurial...
r43345 )
Matt Harbison
windows: don't return early from building the hgrc search path...
r44376 if value and isinstance(value, bytes):
value = util.localpath(value)
for p in value.split(pycompat.ospathsep):
if p.lower().endswith(b'mercurial.ini'):
rcpath.append(p)
Matt Harbison
windows: factor the hgrc directory scan into a function...
r44377 else:
_processdir(p)
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690 return rcpath
Augie Fackler
style: run a patched black on a subset of mercurial...
r43345
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690 def userrcpath():
'''return os-specific hgrc search path to the user dir'''
Augie Fackler
formatting: byteify all mercurial/ and hgext/ string literals...
r43347 home = os.path.expanduser(b'~')
path = [os.path.join(home, b'mercurial.ini'), os.path.join(home, b'.hgrc')]
userprofile = encoding.environ.get(b'USERPROFILE')
Mads Kiilerich
config: don't read the same config file twice...
r22583 if userprofile and userprofile != home:
Augie Fackler
formatting: byteify all mercurial/ and hgext/ string literals...
r43347 path.append(os.path.join(userprofile, b'mercurial.ini'))
path.append(os.path.join(userprofile, b'.hgrc'))
Kevin Bullock
scmutil: split platform-specific bits into their own modules...
r18690 return path
Yuya Nishihara
scmutil: move util.termwidth()...
r30309
Augie Fackler
style: run a patched black on a subset of mercurial...
r43345
Yuya Nishihara
scmutil: extend termwidth() to return terminal height, renamed to termsize()...
r30314 def termsize(ui):
return win32.termsize()