Mercurial > hg
view tests/test-subrepo-missing.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 | 978b907d9b36 |
children | c87db79b9507 |
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$ hg init repo $ cd repo $ hg init subrepo $ echo a > subrepo/a $ hg -R subrepo ci -Am adda adding a $ echo 'subrepo = subrepo' > .hgsub $ hg ci -Am addsubrepo adding .hgsub $ echo b > subrepo/b $ hg -R subrepo ci -Am addb adding b $ hg ci -m updatedsub ignore blanklines in .hgsubstate >>> file('.hgsubstate', 'wb').write('\n\n \t \n \n') $ hg st --subrepos M .hgsubstate $ hg revert -qC .hgsubstate abort more gracefully on .hgsubstate parsing error $ cp .hgsubstate .hgsubstate.old >>> file('.hgsubstate', 'wb').write('\ninvalid') $ hg st --subrepos --cwd $TESTTMP -R $TESTTMP/repo abort: invalid subrepository revision specifier in 'repo/.hgsubstate' line 2 [255] $ mv .hgsubstate.old .hgsubstate delete .hgsub and revert it $ rm .hgsub $ hg revert .hgsub warning: subrepo spec file '.hgsub' not found warning: subrepo spec file '.hgsub' not found warning: subrepo spec file '.hgsub' not found delete .hgsubstate and revert it $ rm .hgsubstate $ hg revert .hgsubstate delete .hgsub and update $ rm .hgsub $ hg up 0 --cwd $TESTTMP -R $TESTTMP/repo warning: subrepo spec file 'repo/.hgsub' not found warning: subrepo spec file 'repo/.hgsub' not found 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg st warning: subrepo spec file '.hgsub' not found ! .hgsub $ ls subrepo a delete .hgsubstate and update $ hg up -C warning: subrepo spec file '.hgsub' not found warning: subrepo spec file '.hgsub' not found 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ rm .hgsubstate $ hg up 0 other [destination] changed .hgsubstate which local [working copy] deleted use (c)hanged version or leave (d)eleted? c 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg st $ ls subrepo a Enable obsolete $ cat >> $HGRCPATH << EOF > [ui] > logtemplate= {rev}:{node|short} {desc|firstline} > [phases] > publish=False > [experimental] > evolution=createmarkers > EOF check that we can update parent repo with missing (amended) subrepo revision $ hg up --repository subrepo -r tip 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg ci -m "updated subrepo to tip" created new head $ cd subrepo $ hg update -r tip 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo foo > a $ hg commit --amend -m "addb (amended)" $ cd .. $ hg update --clean . revision 102a90ea7b4a in subrepo subrepo is hidden 1 files updated, 0 files merged, 0 files removed, 0 files unresolved check that --hidden is propagated to the subrepo $ hg -R subrepo up tip 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg ci -m 'commit with amended subrepo' $ echo bar > subrepo/a $ hg -R subrepo ci --amend -m "amend a (again)" $ hg --hidden cat subrepo/a foo verify will warn if locked-in subrepo revisions are hidden or missing $ hg ci -m "amended subrepo (again)" $ hg --config extensions.strip= --hidden strip -R subrepo -qr 'tip' $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 2 files, 5 changesets, 5 total revisions checking subrepo links subrepo 'subrepo' is hidden in revision a66de08943b6 subrepo 'subrepo' is hidden in revision 674d05939c1e subrepo 'subrepo' not found in revision a7d05d9055a4 verifying shouldn't init a new subrepo if the reference doesn't exist $ mv subrepo b $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 2 files, 5 changesets, 5 total revisions checking subrepo links 0: repository $TESTTMP/repo/subrepo not found (glob) 1: repository $TESTTMP/repo/subrepo not found (glob) 3: repository $TESTTMP/repo/subrepo not found (glob) 4: repository $TESTTMP/repo/subrepo not found (glob) $ ls b $ mv b subrepo $ cd ..