manifestmerge: use dicthelpers.diff and join
This patch improves manifestmerge performance significantly.
In a repository with 170,000 files, the following results were observed on a
clean working directory. Revision '.' adds one file.
hg perfmergecalculate -r .
- before: 0.41 seconds
- after: 0.13 seconds
hg perfmergecalculate -r .^
- before: 0.53 seconds
- after: 0.24 seconds
Comparing against '.' is much faster than comparing against '.^' because with
'.', the wctx and p2 manifest strings have the same identity, so comparisons
are simply pointer equality. With '.^', the strings have different identities
so we need to perform memcmps.
Any operation that uses manifestmerge benefits.
- hg update . goes from 2.04 seconds to 1.75
- hg update .^ goes from 2.52 seconds to 2.25
- hg rebase -r . -d .~6 (involves 4 merges) goes from 11.8 seconds to 10.8
Tests whether or not hgwebdir properly handles various symlink topologies.
$ "$TESTDIR/hghave" serve symlink || exit 80
hide outer repo
$ hg init
$ hg init a
$ echo a > a/a
$ hg --cwd a ci -Ama -d'1 0'
adding a
$ mkdir webdir
$ cd webdir
$ hg init b
$ echo b > b/b
$ hg --cwd b ci -Amb -d'2 0'
adding b
$ hg init c
$ echo c > c/c
$ hg --cwd c ci -Amc -d'3 0'
adding c
$ ln -s ../a al
$ ln -s ../webdir circle
$ root=`pwd`
$ cd ..
$ cat > collections.conf <<EOF
> [collections]
> $root=$root
> EOF
$ hg serve -p $HGPORT -d --pid-file=hg.pid --webdir-conf collections.conf \
> -A access-collections.log -E error-collections.log
$ cat hg.pid >> $DAEMON_PIDS
should succeed
$ "$TESTDIR/get-with-headers.py" localhost:$HGPORT '?style=raw'
200 Script output follows
/al/
/b/
/c/
$ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'al/file/tip/a?style=raw'
200 Script output follows
a
$ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'b/file/tip/b?style=raw'
200 Script output follows
b
$ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'c/file/tip/c?style=raw'
200 Script output follows
c
should fail
$ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'circle/al/file/tip/a?style=raw'
404 Not Found
error: repository circle/al/file/tip/a not found
[1]
$ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'circle/b/file/tip/a?style=raw'
404 Not Found
error: repository circle/b/file/tip/a not found
[1]
$ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'circle/c/file/tip/a?style=raw'
404 Not Found
error: repository circle/c/file/tip/a not found
[1]
collections errors
$ cat error-collections.log