demandimport: make module ignores a set (API)
The list of modules to ignore is used for membership testing. Yet
it is defined as a list.
Sets are more efficient for membership testing. So this commit converts
the module list to a set.
Since we took an API hit, I renamed the variable to further clarify
the change.
This appears to reduce the CPU time for running 300 invocations of
`hg log -r. -T '{rev}'` on my i7-6700K:
before: 18.64s
after: 18.44s
Differential Revision: https://phab.mercurial-scm.org/D3440
#require serve repobundlerepo
$ hg init server
$ cd server
$ cat >> .hg/hgrc << EOF
> [extensions]
> strip=
> EOF
$ echo 1 > foo
$ hg commit -A -m 'first'
adding foo
$ echo 2 > bar
$ hg commit -A -m 'second'
adding bar
Produce a bundle to use
$ hg strip -r 1
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/server/.hg/strip-backup/ed602e697e0f-cc9fff6a-backup.hg
Serve from a bundle file
$ hg serve -R .hg/strip-backup/ed602e697e0f-cc9fff6a-backup.hg -d -p $HGPORT --pid-file=hg.pid
$ cat hg.pid >> $DAEMON_PIDS
Ensure we're serving from the bundle
$ (get-with-headers.py localhost:$HGPORT 'file/tip/?style=raw')
200 Script output follows
-rw-r--r-- 2 bar
-rw-r--r-- 2 foo