Mercurial > hg
view tests/test-rebase-rename.t @ 24787:9d5c27890790
largefiles: for update -C, only update largefiles when necessary
Before, a --clean update with largefiles would use the "optimization" that it
didn't read hashes from standin files before and after the update. Instead of
trusting the content of the standin files, it would rehash all the actual
largefiles that lfdirstate reported clean and update the standins that didn't
have the expected content. It could thus in some "impossible" situations
automatically recover from some "largefile got out sync with its standin"
issues (even there apparently still were weird corner cases where it could
fail). This extra checking is similar to what core --clean intentionally do
not do, and it made update --clean unbearable slow.
Usually in core Mercurial, --clean will rely on the dirstate to find the files
it should update. (It is thus intentionally possible (when trying to trick the
system or if there should be bugs) to end up in situations where --clean not
will restore the working directory content correctly.) Checking every file when
we "know" it is ok is however not an option - that would be too slow.
Instead, trust the content of the standin files. Use the same logic for --clean
as for linear updates and trust the dirstate and that our "logic" will keep
them in sync. It is much cheaper to just rehash the largefiles reported dirty
by a status walk and read all standins than to hash largefiles.
Most of the changes are just a change of indentation now when the different
kinds of updates no longer are handled that differently. Standins for added
files are however only written when doing a normal update, while deleted and
removed files only will be updated for --clean updates.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 15 Apr 2015 15:22:16 -0400 |
parents | aa4a1672583e |
children | d1561a422748 |
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$ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > > [alias] > tlog = log --template "{rev}: '{desc}' {branches}\n" > tglog = tlog --graph > EOF $ hg init a $ cd a $ mkdir d $ echo a > a $ hg ci -Am A adding a $ echo b > d/b $ hg ci -Am B adding d/b $ hg mv d d-renamed moving d/b to d-renamed/b (glob) $ hg ci -m 'rename B' $ hg up -q -C 1 $ hg mv a a-renamed $ echo x > d/x $ hg add d/x $ hg ci -m 'rename A' created new head $ hg tglog @ 3: 'rename A' | | o 2: 'rename B' |/ o 1: 'B' | o 0: 'A' Rename is tracked: $ hg tlog -p --git -r tip 3: 'rename A' diff --git a/a b/a-renamed rename from a rename to a-renamed diff --git a/d/x b/d/x new file mode 100644 --- /dev/null +++ b/d/x @@ -0,0 +1,1 @@ +x Rebase the revision containing the rename: $ hg rebase -s 3 -d 2 rebasing 3:73a3ee40125d "rename A" (tip) saved backup bundle to $TESTTMP/a/.hg/strip-backup/73a3ee40125d-1d78ebcf-backup.hg (glob) $ hg tglog @ 3: 'rename A' | o 2: 'rename B' | o 1: 'B' | o 0: 'A' Rename is not lost: $ hg tlog -p --git -r tip 3: 'rename A' diff --git a/a b/a-renamed rename from a rename to a-renamed diff --git a/d-renamed/x b/d-renamed/x new file mode 100644 --- /dev/null +++ b/d-renamed/x @@ -0,0 +1,1 @@ +x Rebased revision does not contain information about b (issue3739) $ hg log -r 3 --debug changeset: 3:032a9b75e83bff1dcfb6cbfa4ef50a704bf1b569 tag: tip phase: draft parent: 2:220d0626d185f372d9d8f69d9c73b0811d7725f7 parent: -1:0000000000000000000000000000000000000000 manifest: 3:035d66b27a1b06b2d12b46d41a39adb7a200c370 user: test date: Thu Jan 01 00:00:00 1970 +0000 files+: a-renamed d-renamed/x files-: a extra: branch=default extra: rebase_source=73a3ee40125d6f0f347082e5831ceccb3f005f8a description: rename A $ cd .. $ hg init b $ cd b $ echo a > a $ hg ci -Am A adding a $ echo b > b $ hg ci -Am B adding b $ hg cp b b-copied $ hg ci -Am 'copy B' $ hg up -q -C 1 $ hg cp a a-copied $ hg ci -m 'copy A' created new head $ hg tglog @ 3: 'copy A' | | o 2: 'copy B' |/ o 1: 'B' | o 0: 'A' Copy is tracked: $ hg tlog -p --git -r tip 3: 'copy A' diff --git a/a b/a-copied copy from a copy to a-copied Rebase the revision containing the copy: $ hg rebase -s 3 -d 2 rebasing 3:0a8162ff18a8 "copy A" (tip) saved backup bundle to $TESTTMP/b/.hg/strip-backup/0a8162ff18a8-dd06302a-backup.hg (glob) $ hg tglog @ 3: 'copy A' | o 2: 'copy B' | o 1: 'B' | o 0: 'A' Copy is not lost: $ hg tlog -p --git -r tip 3: 'copy A' diff --git a/a b/a-copied copy from a copy to a-copied Rebased revision does not contain information about b (issue3739) $ hg log -r 3 --debug changeset: 3:98f6e6dbf45ab54079c2237fbd11066a5c41a11d tag: tip phase: draft parent: 2:39e588434882ff77d01229d169cdc77f29e8855e parent: -1:0000000000000000000000000000000000000000 manifest: 3:2232f329d66fffe3930d43479ae624f66322b04d user: test date: Thu Jan 01 00:00:00 1970 +0000 files+: a-copied extra: branch=default extra: rebase_source=0a8162ff18a8900df8df8ef7ac0046955205613e description: copy A $ cd .. Test rebase across repeating renames: $ hg init repo $ cd repo $ echo testing > file1.txt $ hg add file1.txt $ hg ci -m "Adding file1" $ hg rename file1.txt file2.txt $ hg ci -m "Rename file1 to file2" $ echo Unrelated change > unrelated.txt $ hg add unrelated.txt $ hg ci -m "Unrelated change" $ hg rename file2.txt file1.txt $ hg ci -m "Rename file2 back to file1" $ hg update -r -2 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo Another unrelated change >> unrelated.txt $ hg ci -m "Another unrelated change" created new head $ hg tglog @ 4: 'Another unrelated change' | | o 3: 'Rename file2 back to file1' |/ o 2: 'Unrelated change' | o 1: 'Rename file1 to file2' | o 0: 'Adding file1' $ hg rebase -s 4 -d 3 rebasing 4:b918d683b091 "Another unrelated change" (tip) saved backup bundle to $TESTTMP/repo/.hg/strip-backup/b918d683b091-3024bc57-backup.hg (glob) $ hg diff --stat -c . unrelated.txt | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) $ cd .. Verify that copies get preserved (issue4192). $ hg init copy-gets-preserved $ cd copy-gets-preserved $ echo a > a $ hg add a $ hg commit --message "File a created" $ hg copy a b $ echo b > b $ hg commit --message "File b created as copy of a and modified" $ hg copy b c $ echo c > c $ hg commit --message "File c created as copy of b and modified" $ hg copy c d $ echo d > d $ hg commit --message "File d created as copy of c and modified" Note that there are four entries in the log for d $ hg tglog --follow d @ 3: 'File d created as copy of c and modified' | o 2: 'File c created as copy of b and modified' | o 1: 'File b created as copy of a and modified' | o 0: 'File a created' Update back to before we performed copies, and inject an unrelated change. $ hg update 0 0 files updated, 0 files merged, 3 files removed, 0 files unresolved $ echo unrelated > unrelated $ hg add unrelated $ hg commit --message "Unrelated file created" created new head $ hg update 4 0 files updated, 0 files merged, 0 files removed, 0 files unresolved Rebase the copies on top of the unrelated change. $ hg rebase --source 1 --dest 4 rebasing 1:79d255d24ad2 "File b created as copy of a and modified" rebasing 2:327f772bc074 "File c created as copy of b and modified" rebasing 3:421b7e82bb85 "File d created as copy of c and modified" saved backup bundle to $TESTTMP/copy-gets-preserved/.hg/strip-backup/79d255d24ad2-a2265555-backup.hg (glob) $ hg update 4 3 files updated, 0 files merged, 0 files removed, 0 files unresolved There should still be four entries in the log for d $ hg tglog --follow d @ 4: 'File d created as copy of c and modified' | o 3: 'File c created as copy of b and modified' | o 2: 'File b created as copy of a and modified' | o 0: 'File a created' Same steps as above, but with --collapse on rebase to make sure the copy records collapse correctly. $ hg co 1 0 files updated, 0 files merged, 3 files removed, 0 files unresolved $ echo more >> unrelated $ hg ci -m 'unrelated commit is unrelated' created new head $ hg rebase -s 2 --dest 5 --collapse rebasing 2:68bf06433839 "File b created as copy of a and modified" note: rebase of 2:68bf06433839 created no changes to commit rebasing 3:af74b229bc02 "File c created as copy of b and modified" merging b and c to c note: rebase of 3:af74b229bc02 created no changes to commit rebasing 4:dbb9ba033561 "File d created as copy of c and modified" merging c and d to d note: rebase of 4:dbb9ba033561 created no changes to commit saved backup bundle to $TESTTMP/copy-gets-preserved/.hg/strip-backup/68bf06433839-dde37595-backup.hg (glob) $ hg co tip 3 files updated, 0 files merged, 0 files removed, 0 files unresolved This should show both revision 3 and 0 since 'd' was transitively a copy of 'a'. $ hg tglog --follow d @ 3: 'Collapsed revision | * File b created as copy of a and modified | * File c created as copy of b and modified | * File d created as copy of c and modified' o 0: 'File a created' $ cd ..