Mercurial > hg
view contrib/buildrpm @ 27430:e240e914d226 stable
revlog: seek to end of file before writing (issue4943)
Revlogs were recently refactored to open file handles in "a+" and use a
persistent file handle for reading and writing. This drastically
reduced the number of file handles being opened.
Unfortunately, it appears that some versions of Solaris lose the file
offset when performing a write after the handle has been seeked.
The simplest workaround is to seek to EOF on files opened in a+ mode
before writing to them, which is what this patch does.
Ideally, this code would exist in the vfs layer. However, this would
require creating a proxy class for file objects in order to provide a
custom implementation of write(). This would add overhead. Since
revlogs are the only files we open in a+ mode, the one-off workaround
in revlog.py should be sufficient.
This patch appears to have little to no impact on performance on my
Linux machine.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 17 Dec 2015 17:16:02 -0800 |
parents | 6474b64045fb |
children | d713fa934fb9 |
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#!/bin/sh -e # # Build a Mercurial RPM from the current repo # # Tested on # - Fedora 20 # - CentOS 5 # - centOS 6 . $(dirname $0)/packagelib.sh BUILD=1 RPMBUILDDIR="$PWD/rpmbuild" while [ "$1" ]; do case "$1" in --prepare ) shift BUILD= ;; --withpython | --with-python) shift PYTHONVER=2.7.10 PYTHONMD5=d7547558fd673bd9d38e2108c6b42521 ;; --rpmbuilddir ) shift RPMBUILDDIR="$1" shift ;; * ) echo "Invalid parameter $1!" 1>&2 exit 1 ;; esac done cd "`dirname $0`/.." specfile=$PWD/contrib/mercurial.spec if [ ! -f $specfile ]; then echo "Cannot find $specfile!" 1>&2 exit 1 fi if [ ! -d .hg ]; then echo 'You are not inside a Mercurial repository!' 1>&2 exit 1 fi gethgversion # TODO: handle distance/node set, and type set if [ -z "$type" ] ; then release=1 else release=0.9_$type fi if [ -n "$distance" ] ; then release=$release+$distance_$node fi if [ "$PYTHONVER" ]; then release=$release+$PYTHONVER RPMPYTHONVER=$PYTHONVER else RPMPYTHONVER=%{nil} fi mkdir -p $RPMBUILDDIR/SOURCES $HG archive -t tgz $RPMBUILDDIR/SOURCES/mercurial-$version-$release.tar.gz if [ "$PYTHONVER" ]; then ( mkdir -p build cd build PYTHON_SRCFILE=Python-$PYTHONVER.tgz [ -f $PYTHON_SRCFILE ] || curl -Lo $PYTHON_SRCFILE http://www.python.org/ftp/python/$PYTHONVER/$PYTHON_SRCFILE if [ "$PYTHONMD5" ]; then echo "$PYTHONMD5 $PYTHON_SRCFILE" | md5sum -w -c fi ln -f $PYTHON_SRCFILE $RPMBUILDDIR/SOURCES/$PYTHON_SRCFILE DOCUTILSVER=`sed -ne "s/^%global docutilsname docutils-//p" $specfile` DOCUTILS_SRCFILE=docutils-$DOCUTILSVER.tar.gz [ -f $DOCUTILS_SRCFILE ] || curl -Lo $DOCUTILS_SRCFILE http://downloads.sourceforge.net/project/docutils/docutils/$DOCUTILSVER/$DOCUTILS_SRCFILE DOCUTILSMD5=`sed -ne "s/^%global docutilsmd5 //p" $specfile` if [ "$DOCUTILSMD5" ]; then echo "$DOCUTILSMD5 $DOCUTILS_SRCFILE" | md5sum -w -c fi ln -f $DOCUTILS_SRCFILE $RPMBUILDDIR/SOURCES/$DOCUTILS_SRCFILE ) fi mkdir -p $RPMBUILDDIR/SPECS rpmspec=$RPMBUILDDIR/SPECS/mercurial.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]) ' >> $rpmspec fi sed -i \ -e "s/^%define withpython.*$/%define withpython $RPMPYTHONVER/" \ $rpmspec if [ "$BUILD" ]; then rpmbuild --define "_topdir $RPMBUILDDIR" -ba $rpmspec --clean if [ $? = 0 ]; then echo echo "Built packages for $version-$release:" find $RPMBUILDDIR/*RPMS/ -type f -newer $rpmspec fi else echo "Prepared sources for $version-$release $rpmspec are in $RPMBUILDDIR/SOURCES/ - use like:" echo "rpmbuild --define '_topdir $RPMBUILDDIR' -ba $rpmspec --clean" fi