tags-cache: skip the filternode step if we are not going to use it
When warming the hgtagsfnodescache, we don't need the actual result, so we can
simply skip the part that "filter" fnode we read from the cache. So provide a
quite visible speed up to the top level `hg debugupdatecache` function.
### 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: 19.947581
after: 18.916804 (-5.17%, -1.03)
$ cat >> $HGRCPATH << EOF
> [extensions]
> fastannotate=
> EOF
$ hg init repo
$ cd repo
$ for i in 0 1 2 3 4; do
> echo $i >> a
> echo $i >> b
> hg commit -A -m $i a b
> done
use the "debugbuildannotatecache" command to build annotate cache at rev 0
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=0
fastannotate: a: 1 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
"debugbuildannotatecache" should work with broken cache (and other files would
be built without being affected). note: linelog being broken is only noticed
when we try to append to it.
$ echo 'CORRUPT!' >> .hg/fastannotate/default/a.m
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=1
fastannotate: a: rebuilding broken cache
fastannotate: a: 2 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
$ echo 'CANNOT REUSE!' > .hg/fastannotate/default/a.l
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=2
fastannotate: a: rebuilding broken cache
fastannotate: a: 3 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
$ rm .hg/fastannotate/default/a.m
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=3
fastannotate: a: rebuilding broken cache
fastannotate: a: 4 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
$ rm .hg/fastannotate/default/a.l
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=3
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=4
fastannotate: a: rebuilding broken cache
fastannotate: a: 5 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
"fastannotate" should deal with file corruption as well
$ rm -rf .hg/fastannotate
$ hg fastannotate --debug -r 0 a
fastannotate: a: 1 new changesets in the main branch
0: 0
$ echo 'CORRUPT!' >> .hg/fastannotate/default/a.m
$ hg fastannotate --debug -r 0 a
fastannotate: a: cache broken and deleted
fastannotate: a: 1 new changesets in the main branch
0: 0
$ echo 'CORRUPT!' > .hg/fastannotate/default/a.l
$ hg fastannotate --debug -r 1 a
fastannotate: a: cache broken and deleted
fastannotate: a: 2 new changesets in the main branch
0: 0
1: 1
$ rm .hg/fastannotate/default/a.l
$ hg fastannotate --debug -r 1 a
fastannotate: a: using fast path (resolved fctx: True)
fastannotate: a: cache broken and deleted
fastannotate: a: 2 new changesets in the main branch
0: 0
1: 1
$ rm .hg/fastannotate/default/a.m
$ hg fastannotate --debug -r 2 a
fastannotate: a: cache broken and deleted
fastannotate: a: 3 new changesets in the main branch
0: 0
1: 1
2: 2