Mercurial > hg
view tests/test-addremove.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 | d8e0c591781c |
children | dd050fc04cc9 |
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$ hg init rep $ cd rep $ mkdir dir $ touch foo dir/bar $ hg -v addremove adding dir/bar adding foo $ hg -v commit -m "add 1" committing files: dir/bar foo committing manifest committing changelog committed changeset 0:6f7f953567a2 $ cd dir/ $ touch ../foo_2 bar_2 $ hg -v addremove adding dir/bar_2 adding foo_2 $ hg -v commit -m "add 2" committing files: dir/bar_2 foo_2 committing manifest committing changelog committed changeset 1:e65414bf35c5 $ cd .. $ hg forget foo $ hg -v addremove adding foo $ hg forget foo #if windows $ hg -v addremove nonexistent nonexistent: The system cannot find the file specified [1] #else $ hg -v addremove nonexistent nonexistent: No such file or directory [1] #endif $ cd .. $ hg init subdir $ cd subdir $ mkdir dir $ cd dir $ touch a.py $ hg addremove 'glob:*.py' adding a.py $ hg forget a.py $ hg addremove -I 'glob:*.py' adding a.py $ hg forget a.py $ hg addremove adding dir/a.py $ cd .. $ hg init sim $ cd sim $ echo a > a $ echo a >> a $ echo a >> a $ echo c > c $ hg commit -Ama adding a adding c $ mv a b $ rm c $ echo d > d $ hg addremove -n -s 50 # issue 1696 removing a adding b removing c adding d recording removal of a as rename to b (100% similar) $ hg addremove -s 50 removing a adding b removing c adding d recording removal of a as rename to b (100% similar) $ hg commit -mb $ cp b c $ hg forget b $ hg addremove -s 50 adding b adding c $ rm c #if windows $ hg ci -A -m "c" nonexistent nonexistent: The system cannot find the file specified abort: failed to mark all new/missing files as added/removed [255] #else $ hg ci -A -m "c" nonexistent nonexistent: No such file or directory abort: failed to mark all new/missing files as added/removed [255] #endif $ hg st ! c $ cd ..