log: speed up hg log for untracked files (
issue1340)
'hg log' on untracked files tends to be fairly slow. The root cause is that we end up using the 'slowpath' when we can't find a revlog for the files listed. This could happen if the file in question is an untracked file, or it is a directory.
This diff tries to speed up 'hg log' (by avoiding the slowpath) for files if we can determine if that file is not (and was never) a directory. We use the previously added store.__contains__ methods to test if the directory exists (or existed) in the store.
To avoid changing any existing semantics, this 'optimization' kicks in only when none of the files listed as arguments to the hg log command exist in the store.
$ branches=.hg/cache/branchheads
$ echo '[extensions]' >> $HGRCPATH
$ echo 'mq =' >> $HGRCPATH
$ show_branch_cache()
> {
> # force cache (re)generation
> hg log -r does-not-exist 2> /dev/null
> hg log -r tip --template 'tip: {rev}\n'
> if [ -f $branches ]; then
> sort $branches
> else
> echo No branch cache
> fi
> if [ "$1" = 1 ]; then
> for b in foo bar; do
> hg log -r $b --template "branch $b: "'{rev}\n'
> done
> fi
> }
$ hg init a
$ cd a
$ hg qinit -c
mq patch on an empty repo
$ hg qnew -d '0 0' p1
$ show_branch_cache
tip: 0
No branch cache
$ echo > pfile
$ hg add pfile
$ hg qrefresh -m 'patch 1'
$ show_branch_cache
tip: 0
d986d5caac23a7d44a46efc0ddaf5eb9665844cf 0
d986d5caac23a7d44a46efc0ddaf5eb9665844cf default
some regular revisions
$ hg qpop
popping p1
patch queue now empty
$ echo foo > foo
$ hg add foo
$ echo foo > .hg/branch
$ hg ci -m 'branch foo'
$ echo bar > bar
$ hg add bar
$ echo bar > .hg/branch
$ hg ci -m 'branch bar'
$ show_branch_cache
tip: 1
c229711f16da3d7591f89b1b8d963b79bda22714 1
c229711f16da3d7591f89b1b8d963b79bda22714 bar
dc25e3827021582e979f600811852e36cbe57341 foo
add some mq patches
$ hg qpush
applying p1
now at: p1
$ show_branch_cache
tip: 2
c229711f16da3d7591f89b1b8d963b79bda22714 1
c229711f16da3d7591f89b1b8d963b79bda22714 bar
dc25e3827021582e979f600811852e36cbe57341 foo
$ hg qnew -d '0 0' p2
$ echo foo > .hg/branch
$ echo foo2 >> foo
$ hg qrefresh -m 'patch 2'
$ show_branch_cache 1
tip: 3
982611f6955f9c48d3365decea203217c945ef0d 2
982611f6955f9c48d3365decea203217c945ef0d bar
dc25e3827021582e979f600811852e36cbe57341 foo
branch foo: 3
branch bar: 2
removing the cache
$ rm $branches
$ show_branch_cache 1
tip: 3
c229711f16da3d7591f89b1b8d963b79bda22714 1
c229711f16da3d7591f89b1b8d963b79bda22714 bar
dc25e3827021582e979f600811852e36cbe57341 foo
branch foo: 3
branch bar: 2
importing rev 1 (the cache now ends in one of the patches)
$ hg qimport -r 1 -n p0
$ show_branch_cache 1
tip: 3
c229711f16da3d7591f89b1b8d963b79bda22714 1
c229711f16da3d7591f89b1b8d963b79bda22714 bar
dc25e3827021582e979f600811852e36cbe57341 foo
branch foo: 3
branch bar: 2
$ hg log -r qbase --template 'qbase: {rev}\n'
qbase: 1
detect an invalid cache
$ hg qpop -a
popping p2
popping p1
popping p0
patch queue now empty
$ hg qpush -a
applying p0
applying p1
applying p2
now at: p2
$ show_branch_cache
tip: 3
dc25e3827021582e979f600811852e36cbe57341 0
dc25e3827021582e979f600811852e36cbe57341 foo
$ cd ..