Mercurial > hg
view tests/test-unionrepo.t @ 30446:b324b4e431e5
posix: give checkexec a fast path; keep the check files and test read only
Before, Mercurial would create a new temporary file every time, stat it, change
its exec mode, stat it again, and delete it. Most of this dance was done to
handle the rare and not-so-essential case of VFAT mounts on unix. The cost of
that was paid by the much more common and important case of using normal file
systems.
Instead, try to create and preserve .hg/cache/checkisexec and
.hg/cache/checknoexec with and without exec flag set. If the files exist and
have correct exec flags set, we can conclude that that file system supports the
exec flag. Best case, the whole exec check can thus be done with two stat
calls. Worst case, we delete the wrong files and check as usual. That will be
because temporary loss of exec bit or on file systems without support for the
exec bit. In that case we check as we did before, with the additional overhead
of one extra stat call.
It is possible that this different test algorithm in some cases on odd file
systems will give different behaviour. Again, I think it will be rare and
special cases and I think it is worth the risk.
test-clone.t happens to show the situation where checkisexec is left behind
from the old style check, while checknoexec only will be created next time a
exec check will be performed.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 14 Jan 2015 01:15:26 +0100 |
parents | bf86e3e87123 |
children | eb586ed5d8ce |
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Test unionrepo functionality Create one repository $ hg init repo1 $ cd repo1 $ touch repo1-0 $ echo repo1-0 > f $ hg ci -Aqmrepo1-0 $ touch repo1-1 $ echo repo1-1 >> f $ hg ci -Aqmrepo1-1 $ touch repo1-2 $ echo repo1-2 >> f $ hg ci -Aqmrepo1-2 $ hg log --template '{rev}:{node|short} {desc|firstline}\n' 2:68c0685446a3 repo1-2 1:8a58db72e69d repo1-1 0:f093fec0529b repo1-0 $ tip1=`hg id -q` $ cd .. - and a clone with a not-completely-trivial history $ hg clone -q repo1 --rev 0 repo2 $ cd repo2 $ touch repo2-1 $ sed '1i\ > repo2-1 at top > ' f > f.tmp $ mv f.tmp f $ hg ci -Aqmrepo2-1 $ touch repo2-2 $ hg pull -q ../repo1 -r 1 $ hg merge -q $ hg ci -Aqmrepo2-2-merge $ touch repo2-3 $ echo repo2-3 >> f $ hg ci -mrepo2-3 $ hg log --template '{rev}:{node|short} {desc|firstline}\n' 4:2f0d178c469c repo2-3 3:9e6fb3e0b9da repo2-2-merge 2:8a58db72e69d repo1-1 1:c337dba826e7 repo2-1 0:f093fec0529b repo1-0 $ cd .. revisions from repo2 appear as appended / pulled to repo1 $ hg -R union:repo1+repo2 log --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 4:9e6fb3e0b9da repo2-2-merge 3:c337dba826e7 repo2-1 2:68c0685446a3 repo1-2 1:8a58db72e69d repo1-1 0:f093fec0529b repo1-0 manifest can be retrieved for revisions in both repos $ hg -R union:repo1+repo2 mani -r $tip1 f repo1-0 repo1-1 repo1-2 $ hg -R union:repo1+repo2 mani -r 4 f repo1-0 repo1-1 repo2-1 repo2-2 files can be retrieved form both repos $ hg -R repo1 cat repo1/f -r2 repo1-0 repo1-1 repo1-2 $ hg -R union:repo1+repo2 cat -r$tip1 repo1/f repo1-0 repo1-1 repo1-2 $ hg -R union:repo1+repo2 cat -r4 $TESTTMP/repo1/f repo2-1 at top repo1-0 repo1-1 files can be compared across repos $ hg -R union:repo1+repo2 diff -r$tip1 -rtip diff -r 68c0685446a3 -r 2f0d178c469c f --- a/f Thu Jan 01 00:00:00 1970 +0000 +++ b/f Thu Jan 01 00:00:00 1970 +0000 @@ -1,3 +1,4 @@ +repo2-1 at top repo1-0 repo1-1 -repo1-2 +repo2-3 heads from both repos are found correctly $ hg -R union:repo1+repo2 heads --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 2:68c0685446a3 repo1-2 revsets works across repos $ hg -R union:repo1+repo2 id -r "ancestor($tip1, 5)" 8a58db72e69d annotate works - an indication that linkrevs works $ hg --cwd repo1 -Runion:../repo2 annotate $TESTTMP/repo1/f -r tip 3: repo2-1 at top 0: repo1-0 1: repo1-1 5: repo2-3 union repos can be cloned ... and clones works correctly $ hg clone -U union:repo1+repo2 repo3 requesting all changes adding changesets adding manifests adding file changes added 6 changesets with 11 changes to 6 files (+1 heads) $ hg -R repo3 paths default = union:repo1+repo2 $ hg -R repo3 verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 6 files, 6 changesets, 11 total revisions $ hg -R repo3 heads --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 2:68c0685446a3 repo1-2 $ hg -R repo3 log --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 4:9e6fb3e0b9da repo2-2-merge 3:c337dba826e7 repo2-1 2:68c0685446a3 repo1-2 1:8a58db72e69d repo1-1 0:f093fec0529b repo1-0 union repos should use the correct rev number (issue5024) $ hg init a $ cd a $ echo a0 >> f $ hg ci -Aqm a0 $ cd .. $ hg init b $ cd b $ echo b0 >> f $ hg ci -Aqm b0 $ echo b1 >> f $ hg ci -qm b1 $ cd .. "hg files -v" to call fctx.size() -> fctx.iscensored() $ hg files -R union:b+a -r2 -v 3 b/f (glob)