Mercurial > hg
view tests/test-mq-qrename.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 | 2963d5c9d90b |
children |
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$ echo "[extensions]" >> $HGRCPATH $ echo "mq=" >> $HGRCPATH $ hg init a $ cd a $ echo 'base' > base $ hg ci -Ambase adding base $ hg qnew -mmqbase mqbase $ hg qrename mqbase renamed $ mkdir .hg/patches/foo $ hg qrename renamed foo $ hg qseries foo/renamed $ ls .hg/patches/foo renamed $ mkdir .hg/patches/bar $ hg qrename foo/renamed bar $ hg qseries bar/renamed $ ls .hg/patches/bar renamed $ hg qrename bar/renamed baz $ hg qseries baz $ ls .hg/patches/baz .hg/patches/baz $ hg qrename baz new/dir $ hg qseries new/dir $ ls .hg/patches/new/dir .hg/patches/new/dir $ cd .. Test patch being renamed before committed: $ hg init b $ cd b $ hg qinit -c $ hg qnew x $ hg qrename y $ hg qcommit -m rename $ cd .. Test overlapping renames (issue2388) $ hg init c $ cd c $ hg qinit -c $ echo a > a $ hg add adding a $ hg qnew patcha $ echo b > b $ hg add adding b $ hg qnew patchb $ hg ci --mq -m c1 $ hg qrename patchb patchc $ hg qrename patcha patchb $ hg st --mq M patchb M series A patchc R patcha $ cd .. Test renames with mq repo (issue2097) $ hg init issue2097 $ cd issue2097 $ hg qnew p0 $ (cd .hg/patches && hg init) $ hg qren p0 p1 $ hg debugstate --mq $ hg ci --mq -mq0 nothing changed [1] $ cd .. Test renaming to a folded patch (issue3058) $ hg init issue3058 $ cd issue3058 $ hg init --mq $ echo a > a $ hg add a $ hg qnew adda $ echo b >> a $ hg qnew addb $ hg qpop popping addb now at: adda $ hg ci --mq -m "save mq" $ hg qfold addb $ hg qmv addb $ cat .hg/patches/addb # HG changeset patch # Parent 0000000000000000000000000000000000000000 diff -r 000000000000 a --- /dev/null * (glob) +++ b/a * (glob) @@ -0,0 +1,2 @@ +a +b $ cd ..