tags-cache: directly perform a monimal walk for hgtagsfnodescache warming
We do something narrower than the path retrieving data. So lets use dedicated
code instead.
This provides further useful speedup:
### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
# benchmark.name = hg.debug.debug-update-cache
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.pre-state = warm
before-this-series: 19.947581
skip-fnode-filter: 18.916804 (-5.17%, -1.03)
use-rev-num: 17.493725 (-12.30%, -2.45)
this-changesets: 15.919466 (-20.19%, -4.03)
#require test-repo slow debhelper debdeps
$ . "$TESTDIR/helpers-testrepo.sh"
$ testrepohgenv
Ensure debuild doesn't run the testsuite, as that could get silly.
$ DEB_BUILD_OPTIONS=nocheck
$ export DEB_BUILD_OPTIONS
$ OUTPUTDIR=`pwd`
$ export OUTPUTDIR
$ cd "$TESTDIR"/..
$ make deb > $OUTPUTDIR/build.log 2>&1
$ cd $OUTPUTDIR
$ ls *.deb | grep -v 'dbg'
mercurial_*.deb (glob)
should have .so and .py
$ dpkg --contents mercurial_*.deb | grep -E '(localrepo|parsers)'
* ./usr/lib/python3/dist-packages/mercurial/cext/parsers*.so (glob)
* ./usr/lib/python3/dist-packages/mercurial/localrepo.py (glob)
* ./usr/lib/python3/dist-packages/mercurial/pure/parsers.py (glob)
should have zsh completions
$ dpkg --contents mercurial_*.deb | grep -E 'zsh.*[^/]$'
* ./usr/share/zsh/vendor-completions/_hg (glob)
should have chg
$ dpkg --contents mercurial_*.deb | grep -E 'chg$'
* ./usr/bin/chg (glob)
chg should come with a man page
$ dpkg --contents mercurial_*.deb | grep -E 'man.*chg'
* ./usr/share/man/man1/chg.1.gz (glob)