censor: make censor acquire locks before processing
Before this patch, "hg censor" executes below:
- without acquisition of wlock, examine whether the working
directory refers the revision of the file to be censored or not
- without acquisition of store lock (slock), replace existing
filelog of file to be censored with censored one,
Replacement consists of steps below, and it is assumed that the
destination filelog at (1) isn't changed before renaming at (3).
1. read existing filelog in
2. write filelog entries (both censored and not) into temporary file
3. rename from temporary file to existing filelog to be censored
It may cause unintentional result, if another command runs parallelly
(see also issue4368).
This patch makes "hg censor" acquire wlock and slock before
processing.
------ Test dirstate._dirs refcounting
$ hg init t
$ cd t
$ mkdir -p a/b/c/d
$ touch a/b/c/d/x
$ touch a/b/c/d/y
$ touch a/b/c/d/z
$ hg ci -Am m
adding a/b/c/d/x
adding a/b/c/d/y
adding a/b/c/d/z
$ hg mv a z
moving a/b/c/d/x to z/b/c/d/x (glob)
moving a/b/c/d/y to z/b/c/d/y (glob)
moving a/b/c/d/z to z/b/c/d/z (glob)
Test name collisions
$ rm z/b/c/d/x
$ mkdir z/b/c/d/x
$ touch z/b/c/d/x/y
$ hg add z/b/c/d/x/y
abort: file 'z/b/c/d/x' in dirstate clashes with 'z/b/c/d/x/y'
[255]
$ rm -rf z/b/c/d
$ touch z/b/c/d
$ hg add z/b/c/d
abort: directory 'z/b/c/d' already in dirstate
[255]
$ cd ..
Issue1790: dirstate entry locked into unset if file mtime is set into
the future
Prepare test repo:
$ hg init u
$ cd u
$ echo a > a
$ hg add
adding a
$ hg ci -m1
Set mtime of a into the future:
$ touch -t 202101011200 a
Status must not set a's entry to unset (issue1790):
$ hg status
$ hg debugstate
n 644 2 2021-01-01 12:00:00 a
Test modulo storage/comparison of absurd dates:
#if no-aix
$ touch -t 195001011200 a
$ hg st
$ hg debugstate
n 644 2 2018-01-19 15:14:08 a
#endif
Verify that exceptions during a dirstate change leave the dirstate
coherent (issue4353)
$ cat > ../dirstateexception.py <<EOF
> from mercurial import merge, extensions, error
>
> def wraprecordupdates(orig, repo, actions, branchmerge):
> raise error.Abort("simulated error while recording dirstateupdates")
>
> def reposetup(ui, repo):
> extensions.wrapfunction(merge, 'recordupdates', wraprecordupdates)
> EOF
$ hg rm a
$ hg commit -m 'rm a'
$ echo "[extensions]" >> .hg/hgrc
$ echo "dirstateex=../dirstateexception.py" >> .hg/hgrc
$ hg up 0
abort: simulated error while recording dirstateupdates
[255]
$ hg log -r . -T '{rev}\n'
1
$ hg status
? a