localrepo: add branchtip() method for faster single-branch lookups
For the PyPy repo with 744 branches and 843 branch heads, this brings
hg log -r default over NFS from:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
3249 0 1.3222 1.3222 <open>
3244 0 0.6211 0.6211 <method 'close' of 'file' objects>
3243 0 0.0800 0.0800 <method 'read' of 'file' objects>
3241 0 0.0660 0.0660 <method 'seek' of 'file' objects>
3905 0 0.0476 0.0476 <zlib.decompress>
3281 0 2.6756 0.0472 mercurial.changelog:182(read)
+3281 0 2.5256 0.0453 +mercurial.revlog:881(revision)
+3276 0 0.0389 0.0196 +mercurial.changelog:28(decodeextra)
+6562 0 0.0123 0.0123 +<method 'split' of 'str' objects>
+6562 0 0.0408 0.0073 +mercurial.encoding:61(tolocal)
+3281 0 0.0054 0.0054 +<method 'index' of 'str' objects>
3241 0 2.2464 0.0456 mercurial.revlog:818(_loadchunk)
+3241 0 0.6205 0.6205 +<method 'close' of 'file' objects>
+3241 0 0.0765 0.0765 +<method 'read' of 'file' objects>
+3241 0 0.0660 0.0660 +<method 'seek' of 'file' objects>
+3241 0 1.4209 0.0135 +mercurial.store:374(__call__)
+3241 0 0.0122 0.0107 +mercurial.revlog:810(_addchunk)
3281 0 2.5256 0.0453 mercurial.revlog:881(revision)
+3280 0 0.0175 0.0175 +mercurial.revlog:305(rev)
+3281 0 2.2819 0.0119 +mercurial.revlog:847(_chunkraw)
+3281 0 0.0603 0.0083 +mercurial.revlog:945(_checkhash)
+3281 0 0.0051 0.0051 +mercurial.revlog:349(flags)
+3281 0 0.0040 0.0040 +<mercurial.mpatch.patches>
13682 0 0.0479 0.0248 <method 'decode' of 'str' objects>
+7418 0 0.0228 0.0076 +encodings.utf_8:15(decode)
+1 0 0.0003 0.0000 +encodings:71(search_function)
3248 0 1.3995 0.0246 mercurial.scmutil:218(__call__)
+3248 0 1.3222 1.3222 +<open>
+3248 0 0.0235 0.0184 +os.path:80(split)
+3248 0 0.0084 0.0068 +mercurial.scmutil:92(__call__)
Time: real 2.750 secs (user 0.680+0.000 sys 0.360+0.000)
down to:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
55 31 0.0197 0.0163 <__import__>
+1 0 0.0006 0.0002 +mercurial.context:8(<module>)
+1 0 0.0042 0.0001 +mercurial.revlog:12(<module>)
+1 0 0.0002 0.0001 +mercurial.match:8(<module>)
+1 0 0.0003 0.0001 +mercurial.dirstate:7(<module>)
+1 0 0.0057 0.0001 +mercurial.changelog:8(<module>)
1 0 0.0117 0.0032 mercurial.localrepo:525(_readbranchcache)
+844 0 0.0015 0.0015 +<binascii.unhexlify>
+845 0 0.0010 0.0010 +<method 'split' of 'str' objects>
+843 0 0.0045 0.0009 +mercurial.encoding:61(tolocal)
+843 0 0.0004 0.0004 +<method 'setdefault' of 'dict' objects>
+1 0 0.0003 0.0003 +<method 'close' of 'file' objects>
3 0 0.0029 0.0029 <method 'read' of 'file' objects>
9 0 0.0018 0.0018 <open>
990 0 0.0017 0.0017 <binascii.unhexlify>
53 0 0.0016 0.0016 mercurial.demandimport:43(__init__)
862 0 0.0015 0.0015 <_codecs.utf_8_decode>
862 0 0.0037 0.0014 <method 'decode' of 'str' objects>
+862 0 0.0023 0.0008 +encodings.utf_8:15(decode)
981 0 0.0011 0.0011 <method 'split' of 'str' objects>
861 0 0.0046 0.0009 mercurial.encoding:61(tolocal)
+861 0 0.0037 0.0014 +<method 'decode' of 'str' objects>
862 0 0.0023 0.0008 encodings.utf_8:15(decode)
+862 0 0.0015 0.0015 +<_codecs.utf_8_decode>
4 0 0.0008 0.0008 <method 'close' of 'file' objects>
179 154 0.0202 0.0004 mercurial.demandimport:83(__getattribute__)
+36 11 0.0199 0.0003 +mercurial.demandimport:55(_load)
+72 0 0.0001 0.0001 +mercurial.demandimport:83(__getattribute__)
+36 0 0.0000 0.0000 +<getattr>
1 0 0.0015 0.0004 mercurial.tags:148(_readtagcache)
Time: real 0.060 secs (user 0.030+0.000 sys 0.010+0.000)
#!/bin/sh
#
# Build a Mercurial RPM in place.
#
# Tested on
# - Fedora 8 (with docutils 0.5)
# - Fedora 11
# - OpenSuse 11.2
cd "`dirname $0`/.."
HG="$PWD/hg"
PYTHONPATH="$PWD/mercurial/pure"
export PYTHONPATH
specfile=contrib/mercurial.spec
if [ ! -f $specfile ]; then
echo "Cannot find $specfile!" 1>&2
exit 1
fi
if [ ! -d .hg ]; then
echo 'You are not inside a Mercurial repository!' 1>&2
exit 1
fi
if $HG id -i | grep '+$' > /dev/null 2>&1; then
echo -n "Your local changes will NOT be in the RPM. Continue [y/n] ? "
read answer
if echo $answer | grep -iv '^y'; then
exit
fi
fi
rpmdir="$PWD/rpmbuild"
rm -rf $rpmdir
mkdir -p $rpmdir/SOURCES $rpmdir/SPECS $rpmdir/RPMS $rpmdir/SRPMS $rpmdir/BUILD
# make setup.py build the version string
python setup.py build_py -c -d .
hgversion=`$HG version | sed -ne 's/.*(version \(.*\))$/\1/p'`
if echo $hgversion | grep -- '-' > /dev/null 2>&1; then
# nightly build case, version is like 1.3.1+250-20b91f91f9ca
version=`echo $hgversion | cut -d- -f1`
release=`echo $hgversion | cut -d- -f2 | sed -e 's/+.*//'`
else
# official tag, version is like 1.3.1
version=`echo $hgversion | sed -e 's/+.*//'`
release='0'
fi
$HG archive -t tgz $rpmdir/SOURCES/mercurial-$version.tar.gz
rpmspec=$rpmdir/SPECS/mercurial-$version.spec
sed -e "s,^Version:.*,Version: $version," \
-e "s,^Release:.*,Release: $release," \
$specfile > $rpmspec
echo >> $rpmspec
echo "%changelog" >> $rpmspec
if echo $version | grep '+' > /dev/null 2>&1; then
latesttag="`echo $version | sed -e 's/+.*//'`"
$HG log -r .:"$latesttag" -fM \
--template '{date|hgdate}\t{author}\t{desc|firstline}\n' | python -c '
import sys, time
def datestr(date, format):
return time.strftime(format, time.gmtime(float(date[0]) - date[1]))
changelog = []
for l in sys.stdin.readlines():
tok = l.split("\t")
hgdate = tuple(int(v) for v in tok[0].split())
changelog.append((datestr(hgdate, "%F"), tok[1], hgdate, tok[2]))
prevtitle = ""
for l in sorted(changelog, reverse=True):
title = "* %s %s" % (datestr(l[2], "%a %b %d %Y"), l[1])
if prevtitle != title:
prevtitle = title
print
print title
print "- %s" % l[3].strip()
' >> $rpmspec
else
$HG log \
--template '{date|hgdate}\t{author}\t{desc|firstline}\n' \
.hgtags | python -c '
import sys, time
def datestr(date, format):
return time.strftime(format, time.gmtime(float(date[0]) - date[1]))
for l in sys.stdin.readlines():
tok = l.split("\t")
hgdate = tuple(int(v) for v in tok[0].split())
print "* %s %s\n- %s" % (datestr(hgdate, "%a %b %d %Y"), tok[1], tok[2])
' >> $rpmspec
fi
rpmbuild --define "_topdir $rpmdir" -ba $rpmspec --clean
if [ $? = 0 ]; then
echo
echo "Packages are in $rpmdir:"
ls -l $rpmdir/*RPMS/*
fi