annotate contrib/buildrpm @ 2577:fa76c5d609c9

bdiff: improve worst case behavior by 100x. on 5.8MB (244.000 lines) text file with similar lines, hash before this change made diff against empty file take 75 seconds. this change improves performance to 0.6 seconds. result is that clone of smallish repo (137MB) with some files like this takes 1 minute instead of 10 minutes. common case of diff is 10% slower now, probably because of worse cache locality. but diff does not affect overall performance in common case (less than 1% of runtime is in diff when it is working ok), so this tradeoff looks good.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Fri, 07 Jul 2006 15:02:55 -0700
parents ced5f5ceb172
children e5e6dd8ba6bb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
564
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
1 #!/bin/sh
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
2 #
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
3 # Build a Mercurial RPM in place.
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
4 #
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
5 # Bryan O'Sullivan <bos@serpentine.com>
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
6
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
7 root="`hg root 2>/dev/null`"
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
8 specfile=contrib/mercurial.spec
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
9
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
10 if [ -z "$root" ]; then
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
11 echo 'You are not inside a Mercurial repository!' 1>&2
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
12 exit 1
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
13 fi
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
14
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
15 rpmdir=/tmp/"`basename $root | sed 's/ /_/'`"-rpm
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
16
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
17 cd "$root"
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
18 rm -rf $rpmdir
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
19 mkdir -p $rpmdir/RPMS
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
20 hg clone "$root" $rpmdir/BUILD
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
21
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
22 if [ ! -f $specfile ]; then
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
23 echo "Cannot find $specfile!" 1>&2
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
24 exit 1
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
25 fi
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
26
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
27 tmpspec=/tmp/`basename "$specfile"`.$$
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
28 # Use the most recent tag as the version.
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
29 version=`hg tags | perl -e 'while(<STDIN>){if(/^(\d\S+)/){print$1;exit}}'`
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
30 # Compute the release number as the difference in revision numbers
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
31 # between the tip and the most recent tag.
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
32 release=`hg tags | perl -e 'while(<STDIN>){/^(\S+)\s+(\d+)/;if($1eq"tip"){$t=$2}else{print$t-$2+1;exit}}'`
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
33 tip=`hg -q tip`
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
34
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
35 # Beat up the spec file
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
36 sed -e 's,^Source:.*,Source: /dev/null,' \
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
37 -e "s,^Version:.*,Version: $version," \
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
38 -e "s,^Release:.*,Release: $release," \
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
39 -e "s,^%prep.*,Changeset: $tip\n\0," \
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
40 -e 's,^%setup.*,,' \
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
41 $specfile > $tmpspec
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
42
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
43 rpmbuild --define "_topdir $rpmdir" -bb $tmpspec
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
44 if [ $? = 0 ]; then
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
45 rm -rf $tmpspec $rpmdir/BUILD
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
46 mv $rpmdir/RPMS/*/* $rpmdir && rm -r $rpmdir/RPMS
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
47 echo
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
48 echo "Packages are in $rpmdir"
ced5f5ceb172 [PATCH] Add contrib/buildrpm script
mpm@selenic.com
parents:
diff changeset
49 fi