Mercurial > hg
view tests/test-convert-tagsbranch-topology.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 | e955549cd045 |
children | 86fe3c404c1e |
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#require git $ echo "[core]" >> $HOME/.gitconfig $ echo "autocrlf = false" >> $HOME/.gitconfig $ echo "[core]" >> $HOME/.gitconfig $ echo "autocrlf = false" >> $HOME/.gitconfig $ cat <<EOF >> $HGRCPATH > [extensions] > convert = > [convert] > hg.usebranchnames = True > hg.tagsbranch = tags-update > EOF $ GIT_AUTHOR_NAME='test'; export GIT_AUTHOR_NAME $ GIT_AUTHOR_EMAIL='test@example.org'; export GIT_AUTHOR_EMAIL $ GIT_AUTHOR_DATE="2007-01-01 00:00:00 +0000"; export GIT_AUTHOR_DATE $ GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"; export GIT_COMMITTER_NAME $ GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"; export GIT_COMMITTER_EMAIL $ GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"; export GIT_COMMITTER_DATE $ count=10 $ action() > { > GIT_AUTHOR_DATE="2007-01-01 00:00:$count +0000" > GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE" > git "$@" >/dev/null 2>/dev/null || echo "git command error" > count=`expr $count + 1` > } $ glog() > { > hg log -G --template '{rev} "{desc|firstline}" files: {files}\n' "$@" > } $ convertrepo() > { > hg convert --datesort git-repo hg-repo > } Build a GIT repo with at least 1 tag $ mkdir git-repo $ cd git-repo $ git init >/dev/null 2>&1 $ echo a > a $ git add a $ action commit -m "rev1" $ action tag -m "tag1" tag1 $ cd .. Do a first conversion $ convertrepo initializing destination hg-repo repository scanning source... sorting... converting... 0 rev1 updating tags updating bookmarks Simulate upstream updates after first conversion $ cd git-repo $ echo b > a $ git add a $ action commit -m "rev2" $ action tag -m "tag2" tag2 $ cd .. Perform an incremental conversion $ convertrepo scanning source... sorting... converting... 0 rev2 updating tags updating bookmarks Print the log $ cd hg-repo $ glog o 3 "update tags" files: .hgtags | | o 2 "rev2" files: a | | o | 1 "update tags" files: .hgtags / o 0 "rev1" files: a $ cd ..