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branchmap: use revbranchcache when updating branch map...
branchmap: use revbranchcache when updating branch map The revbranchcache is read on demand before it will be used for updating the branch map. It is written back when the branchmap is written and it will thus use the same locking as branchmap. The revbranchcache instance is short-lived; it is only stored in the branchmap from .update() is invoked and until .write() is invoked. Branchmap already assume that the repo is locked in that case. The use of revbranchcache for branch map updates will make sure that the revbranchcache "always" is kept up-to-date. The perfbranchmap benchmark is somewhat bogus, especially when we can see that the caching makes a significant difference between the realistic case of a first run and the rare case of rerunning it with a full cache. Here are some 'base' numbers on mozilla-central: Before: ! wall 6.912745 comb 6.910000 user 6.840000 sys 0.070000 (best of 3) After - initial, cache is empty: ! wall 7.792569 comb 7.790000 user 7.720000 sys 0.070000 (best of 3) After - cache is full: ! wall 0.879688 comb 0.880000 user 0.870000 sys 0.010000 (best of 4) The overhead when running with empty cache comes from checking, missing and updating it every time. Most of the performance improvement comes from not having to extract the branch info from the changelog. The last doubling of performance comes from no longer having to convert all branch names to local encoding but reuse the few already converted branch names. On the hg repo: Before: ! wall 0.715703 comb 0.710000 user 0.710000 sys 0.000000 (best of 14) After: ! wall 0.105489 comb 0.110000 user 0.110000 sys 0.000000 (best of 87)
Mads Kiilerich - - Load All Authors

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test-clone.t
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Prepare repo a:
$ hg init a
$ cd a
$ echo a > a
$ hg add a
$ hg commit -m test
$ echo first line > b
$ hg add b
Create a non-inlined filelog:
$ $PYTHON -c 'file("data1", "wb").write("".join("%s\n" % x for x in range(10000)))'
$ for j in 0 1 2 3 4 5 6 7 8 9; do
> cat data1 >> b
> hg commit -m test
> done
List files in store/data (should show a 'b.d'):
$ for i in .hg/store/data/*; do
> echo $i
> done
.hg/store/data/a.i
.hg/store/data/b.d
.hg/store/data/b.i
Trigger branchcache creation:
$ hg branches
default 10:a7949464abda
$ ls .hg/cache
branch2-served
rbc-names-v1
rbc-revs-v1
Default operation:
$ hg clone . ../b
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ../b
Ensure branchcache got copied over:
$ ls .hg/cache
branch2-served
$ cat a
a
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 11 changesets, 11 total revisions
Invalid dest '' must abort:
$ hg clone . ''
abort: empty destination path is not valid
[255]
No update, with debug option:
#if hardlink
$ hg --debug clone -U . ../c
linked 8 files
#else
$ hg --debug clone -U . ../c
copied 8 files
#endif
$ cd ../c
Ensure branchcache got copied over:
$ ls .hg/cache
branch2-served
$ cat a 2>/dev/null || echo "a not present"
a not present
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 11 changesets, 11 total revisions
Default destination:
$ mkdir ../d
$ cd ../d
$ hg clone ../a
destination directory: a
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd a
$ hg cat a
a
$ cd ../..
Check that we drop the 'file:' from the path before writing the .hgrc:
$ hg clone file:a e
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ grep 'file:' e/.hg/hgrc
[1]
Check that path aliases are expanded:
$ hg clone -q -U --config 'paths.foobar=a#0' foobar f
$ hg -R f showconfig paths.default
$TESTTMP/a#0 (glob)
Use --pull:
$ hg clone --pull a g
requesting all changes
adding changesets
adding manifests
adding file changes
added 11 changesets with 11 changes to 2 files
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R g verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 11 changesets, 11 total revisions
Invalid dest '' with --pull must abort (issue2528):
$ hg clone --pull a ''
abort: empty destination path is not valid
[255]
Clone to '.':
$ mkdir h
$ cd h
$ hg clone ../a .
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ..
*** Tests for option -u ***
Adding some more history to repo a:
$ cd a
$ hg tag ref1
$ echo the quick brown fox >a
$ hg ci -m "hacked default"
$ hg up ref1
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg branch stable
marked working directory as branch stable
(branches are permanent and global, did you want a bookmark?)
$ echo some text >a
$ hg ci -m "starting branch stable"
$ hg tag ref2
$ echo some more text >a
$ hg ci -m "another change for branch stable"
$ hg up ref2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg parents
changeset: 13:e8ece76546a6
branch: stable
tag: ref2
parent: 10:a7949464abda
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: starting branch stable
Repo a has two heads:
$ hg heads
changeset: 15:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
$ cd ..
Testing --noupdate with --updaterev (must abort):
$ hg clone --noupdate --updaterev 1 a ua
abort: cannot specify both --noupdate and --updaterev
[255]
Testing clone -u:
$ hg clone -u . a ua
updating to branch stable
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
Repo ua has both heads:
$ hg -R ua heads
changeset: 15:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
Same revision checked out in repo a and ua:
$ hg -R a parents --template "{node|short}\n"
e8ece76546a6
$ hg -R ua parents --template "{node|short}\n"
e8ece76546a6
$ rm -r ua
Testing clone --pull -u:
$ hg clone --pull -u . a ua
requesting all changes
adding changesets
adding manifests
adding file changes
added 16 changesets with 16 changes to 3 files (+1 heads)
updating to branch stable
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
Repo ua has both heads:
$ hg -R ua heads
changeset: 15:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
Same revision checked out in repo a and ua:
$ hg -R a parents --template "{node|short}\n"
e8ece76546a6
$ hg -R ua parents --template "{node|short}\n"
e8ece76546a6
$ rm -r ua
Testing clone -u <branch>:
$ hg clone -u stable a ua
updating to branch stable
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
Repo ua has both heads:
$ hg -R ua heads
changeset: 15:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
Branch 'stable' is checked out:
$ hg -R ua parents
changeset: 15:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
$ rm -r ua
Testing default checkout:
$ hg clone a ua
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
Repo ua has both heads:
$ hg -R ua heads
changeset: 15:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
Branch 'default' is checked out:
$ hg -R ua parents
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
Test clone with a branch named "@" (issue3677)
$ hg -R ua branch @
marked working directory as branch @
(branches are permanent and global, did you want a bookmark?)
$ hg -R ua commit -m 'created branch @'
$ hg clone ua atbranch
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R atbranch heads
changeset: 16:798b6d97153e
branch: @
tag: tip
parent: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: created branch @
changeset: 15:0aae7cf88f0d
branch: stable
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
$ hg -R atbranch parents
changeset: 12:f21241060d6a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: hacked default
$ rm -r ua atbranch
Testing #<branch>:
$ hg clone -u . a#stable ua
adding changesets
adding manifests
adding file changes
added 14 changesets with 14 changes to 3 files
updating to branch stable
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
Repo ua has branch 'stable' and 'default' (was changed in fd511e9eeea6):
$ hg -R ua heads
changeset: 13:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 10:a7949464abda
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
Same revision checked out in repo a and ua:
$ hg -R a parents --template "{node|short}\n"
e8ece76546a6
$ hg -R ua parents --template "{node|short}\n"
e8ece76546a6
$ rm -r ua
Testing -u -r <branch>:
$ hg clone -u . -r stable a ua
adding changesets
adding manifests
adding file changes
added 14 changesets with 14 changes to 3 files
updating to branch stable
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
Repo ua has branch 'stable' and 'default' (was changed in fd511e9eeea6):
$ hg -R ua heads
changeset: 13:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 10:a7949464abda
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
Same revision checked out in repo a and ua:
$ hg -R a parents --template "{node|short}\n"
e8ece76546a6
$ hg -R ua parents --template "{node|short}\n"
e8ece76546a6
$ rm -r ua
Testing -r <branch>:
$ hg clone -r stable a ua
adding changesets
adding manifests
adding file changes
added 14 changesets with 14 changes to 3 files
updating to branch stable
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
Repo ua has branch 'stable' and 'default' (was changed in fd511e9eeea6):
$ hg -R ua heads
changeset: 13:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
changeset: 10:a7949464abda
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
Branch 'stable' is checked out:
$ hg -R ua parents
changeset: 13:0aae7cf88f0d
branch: stable
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: another change for branch stable
$ rm -r ua
Issue2267: Error in 1.6 hg.py: TypeError: 'NoneType' object is not
iterable in addbranchrevs()
$ cat <<EOF > simpleclone.py
> from mercurial import ui, hg
> myui = ui.ui()
> repo = hg.repository(myui, 'a')
> hg.clone(myui, {}, repo, dest="ua")
> EOF
$ python simpleclone.py
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -r ua
$ cat <<EOF > branchclone.py
> from mercurial import ui, hg, extensions
> myui = ui.ui()
> extensions.loadall(myui)
> repo = hg.repository(myui, 'a')
> hg.clone(myui, {}, repo, dest="ua", branch=["stable",])
> EOF
$ python branchclone.py
adding changesets
adding manifests
adding file changes
added 14 changesets with 14 changes to 3 files
updating to branch stable
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -r ua
Test clone with special '@' bookmark:
$ cd a
$ hg bookmark -r a7949464abda @ # branch point of stable from default
$ hg clone . ../i
updating to bookmark @
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg id -i ../i
a7949464abda
$ rm -r ../i
$ hg bookmark -f -r stable @
$ hg bookmarks
@ 15:0aae7cf88f0d
$ hg clone . ../i
updating to bookmark @ on branch stable
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg id -i ../i
0aae7cf88f0d
$ cd "$TESTTMP"
Testing failures:
$ mkdir fail
$ cd fail
No local source
$ hg clone a b
abort: repository a not found!
[255]
No remote source
#if windows
$ hg clone http://127.0.0.1:3121/a b
abort: error: * (glob)
[255]
#else
$ hg clone http://127.0.0.1:3121/a b
abort: error: *refused* (glob)
[255]
#endif
$ rm -rf b # work around bug with http clone
#if unix-permissions no-root
Inaccessible source
$ mkdir a
$ chmod 000 a
$ hg clone a b
abort: repository a not found!
[255]
Inaccessible destination
$ hg init b
$ cd b
$ hg clone . ../a
abort: Permission denied: '../a'
[255]
$ cd ..
$ chmod 700 a
$ rm -r a b
#endif
#if fifo
Source of wrong type
$ mkfifo a
$ hg clone a b
abort: repository a not found!
[255]
$ rm a
#endif
Default destination, same directory
$ hg init q
$ hg clone q
destination directory: q
abort: destination 'q' is not empty
[255]
destination directory not empty
$ mkdir a
$ echo stuff > a/a
$ hg clone q a
abort: destination 'a' is not empty
[255]
#if unix-permissions no-root
leave existing directory in place after clone failure
$ hg init c
$ cd c
$ echo c > c
$ hg commit -A -m test
adding c
$ chmod -rx .hg/store/data
$ cd ..
$ mkdir d
$ hg clone c d 2> err
[255]
$ test -d d
$ test -d d/.hg
[1]
re-enable perm to allow deletion
$ chmod +rx c/.hg/store/data
#endif
$ cd ..
Test clone from the repository in (emulated) revlog format 0 (issue4203):
$ mkdir issue4203
$ mkdir -p src/.hg
$ echo foo > src/foo
$ hg -R src add src/foo
$ hg -R src commit -m '#0'
$ hg -R src log -q
0:e1bab28bca43
$ hg clone -U -q src dst
$ hg -R dst log -q
0:e1bab28bca43
$ cd ..