Mercurial > hg
view tests/test-rebase-pull.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 | 261c25372959 |
children | c2bd2f77965b |
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$ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > > [alias] > tglog = log -G --template "{rev}: '{desc}' {branches}\n" > EOF $ hg init a $ cd a $ echo C1 > C1 $ hg ci -Am C1 adding C1 $ echo C2 > C2 $ hg ci -Am C2 adding C2 $ cd .. $ hg clone a b updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg clone a c updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd b $ echo L1 > L1 $ hg ci -Am L1 adding L1 $ cd ../a $ echo R1 > R1 $ hg ci -Am R1 adding R1 $ cd ../b Now b has one revision to be pulled from a: $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) rebasing 2:ff8d69a621f9 "L1" saved backup bundle to $TESTTMP/b/.hg/strip-backup/ff8d69a621f9-160fa373-backup.hg (glob) $ hg tglog @ 3: 'L1' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1' Re-run: $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes no changes found Invoke pull --rebase and nothing to rebase: $ cd ../c $ hg book norebase $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files nothing to rebase - updating instead 1 files updated, 0 files merged, 0 files removed, 0 files unresolved updating bookmark norebase $ hg tglog -l 1 @ 2: 'R1' | ~ pull --rebase --update should ignore --update: $ hg pull --rebase --update pulling from $TESTTMP/a (glob) searching for changes no changes found pull --rebase doesn't update if nothing has been pulled: $ hg up -q 1 $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes no changes found $ hg tglog -l 1 o 2: 'R1' | ~ $ cd .. pull --rebase works when a specific revision is pulled (issue3619) $ cd a $ hg tglog @ 2: 'R1' | o 1: 'C2' | o 0: 'C1' $ echo R2 > R2 $ hg ci -Am R2 adding R2 $ echo R3 > R3 $ hg ci -Am R3 adding R3 $ cd ../c $ hg tglog o 2: 'R1' | @ 1: 'C2' | o 0: 'C1' $ echo L1 > L1 $ hg ci -Am L1 adding L1 created new head $ hg pull --rev tip --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files rebasing 3:ff8d69a621f9 "L1" saved backup bundle to $TESTTMP/c/.hg/strip-backup/ff8d69a621f9-160fa373-backup.hg (glob) $ hg tglog @ 5: 'L1' | o 4: 'R3' | o 3: 'R2' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1' pull --rebase works with bundle2 turned on $ cd ../a $ echo R4 > R4 $ hg ci -Am R4 adding R4 $ hg tglog @ 5: 'R4' | o 4: 'R3' | o 3: 'R2' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1' $ cd ../c $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) rebasing 5:518d153c0ba3 "L1" saved backup bundle to $TESTTMP/c/.hg/strip-backup/518d153c0ba3-73407f14-backup.hg (glob) $ hg tglog @ 6: 'L1' | o 5: 'R4' | o 4: 'R3' | o 3: 'R2' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1' pull --rebase only update if there is nothing to rebase $ cd ../a $ echo R5 > R5 $ hg ci -Am R5 adding R5 $ hg tglog @ 6: 'R5' | o 5: 'R4' | o 4: 'R3' | o 3: 'R2' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1' $ cd ../c $ echo L2 > L2 $ hg ci -Am L2 adding L2 $ hg up 'desc(L1)' 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) rebasing 6:0d0727eb7ce0 "L1" rebasing 7:c1f58876e3bf "L2" saved backup bundle to $TESTTMP/c/.hg/strip-backup/0d0727eb7ce0-ef61ccb2-backup.hg (glob) $ hg tglog o 8: 'L2' | @ 7: 'L1' | o 6: 'R5' | o 5: 'R4' | o 4: 'R3' | o 3: 'R2' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1' pull --rebase update (no rebase) use proper update: - warn about other head. $ cd ../a $ echo R6 > R6 $ hg ci -Am R6 adding R6 $ cd ../c $ hg up 'desc(R5)' 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) nothing to rebase - updating instead 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 1 other heads for branch "default" $ hg tglog @ 9: 'R6' | | o 8: 'L2' | | | o 7: 'L1' |/ o 6: 'R5' | o 5: 'R4' | o 4: 'R3' | o 3: 'R2' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1' Multiple pre-existing heads on the branch ----------------------------------------- Pull bring content, but nothing on the current branch, we should not consider pre-existing heads. $ cd ../a $ hg branch unrelatedbranch marked working directory as branch unrelatedbranch (branches are permanent and global, did you want a bookmark?) $ echo B1 > B1 $ hg commit -Am B1 adding B1 $ cd ../c $ hg up 'desc(L2)' 2 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files nothing to rebase There is two local heads and we pull a third one. The second local head should not confuse the `hg pull rebase`. $ hg up 'desc(R6)' 1 files updated, 0 files merged, 2 files removed, 0 files unresolved $ echo M1 > M1 $ hg commit -Am M1 adding M1 $ cd ../a $ hg up 'desc(R6)' 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo R7 > R7 $ hg commit -Am R7 adding R7 $ cd ../c $ hg up 'desc(L2)' 2 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) rebasing 7:864e0a2d2614 "L1" rebasing 8:6dc0ea5dcf55 "L2" saved backup bundle to $TESTTMP/c/.hg/strip-backup/864e0a2d2614-2f72c89c-backup.hg (glob) $ hg tglog @ 12: 'L2' | o 11: 'L1' | o 10: 'R7' | | o 9: 'M1' |/ | o 8: 'B1' unrelatedbranch |/ o 7: 'R6' | o 6: 'R5' | o 5: 'R4' | o 4: 'R3' | o 3: 'R2' | o 2: 'R1' | o 1: 'C2' | o 0: 'C1'