outgoing: add a simple fastpath when there is no common
This further speed up case like `hg bundle --all` for larger repository.
### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
# benchmark.name = hg.command.bundle
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.revs = all
# benchmark.variants.type = none-streamv2
before: 316.749699
after: 311.165461 (-1.76%, -5.58)
There is further work to be done in this area like not doing any outgoing
computation in the stream case for example. however the recent changes already
gives use a large win for a small amount of local work.
### benchmark.name = hg.command.bundle
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.revs = all
# benchmark.variants.type = none-streamv2
## data-env-vars.name = mercurial-public-2024-03-22-zstd-sparse-revlog
pre-%ln-change: 1.263859
the-%ln-change: 0.700229 (-44.60%, -0.56)
prev-changeset: 0.496050 (-60.75%, -0.77)
this-changeset: 0.495243 (-60.81%, -0.77)
## data-env-vars.name = tryton-public-2024-03-22-zstd-sparse-revlog
pre-%ln-change: 2.975765
the-%ln-change: 1.870798 (-37.13%, -1.10)
prev-changeset: 1.461583 (-50.88%, -1.51)
this-changeset: 1.469185 (-50.63%, -1.51)
## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog
pre-%ln-change: 4.540080
the-%ln-change: 3.401700 (-25.07%, -1.14)
prev-changeset: 2.915810 (-35.78%, -1.62)
this-changeset: 2.911643 (-35.87%, -1.63)
## data-env-vars.name = heptapod-public-2024-03-25-zstd-sparse-revlog
pre-%ln-change: 10.138396
the-%ln-change: 7.750458 (-23.55%, -2.39)
prev-changeset: 6.665565 (-34.25%, -3.47)
this-changeset: 6.672078 (-34.19%, -3.47)
## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
pre-%ln-change: 399.484481
the-%ln-change: 346.508952 (-13.26%, -52.98)
prev-changeset: 316.749699 (-20.71%, -82.73)
this-changeset: 311.165461 (-22.11%, -88.32)
Check that renames are correctly saved by a commit after a merge
Test with the merge on 3 having the rename on the local parent
$ hg init a
$ cd a
$ echo line1 > foo
$ hg add foo
$ hg ci -m '0: add foo'
$ echo line2 >> foo
$ hg ci -m '1: change foo'
$ hg up -C 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg mv foo bar
$ rm bar
$ echo line0 > bar
$ echo line1 >> bar
$ hg ci -m '2: mv foo bar; change bar'
created new head
$ hg merge 1
merging bar and foo to bar
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line0
line1
line2
$ hg ci -m '3: merge with local rename'
$ hg debugindex bar
rev linkrev nodeid p1-nodeid p2-nodeid
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
$ hg debugrename bar
bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2
$ hg debugindex foo
rev linkrev nodeid p1-nodeid p2-nodeid
0 0 690b295714ae 000000000000 000000000000
1 1 9e25c27b8757 690b295714ae 000000000000
Revert the content change from rev 2:
$ hg up -C 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm bar
$ echo line1 > bar
$ hg ci -m '4: revert content change from rev 2'
created new head
$ hg log --template '{rev}:{node|short} {parents}\n'
4:2263c1be0967 2:0f2ff26688b9
3:0555950ead28 2:0f2ff26688b9 1:5cd961e4045d
2:0f2ff26688b9 0:2665aaee66e9
1:5cd961e4045d
0:2665aaee66e9
This should use bar@rev2 as the ancestor:
$ hg --debug merge 3
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 0555950ead28
starting 4 threads for background file closing (?)
preserving bar for resolve of bar
bar: versions differ -> m
picked tool ':merge' for bar (binary False symlink False changedelete False)
merging bar
my bar@2263c1be0967+ other bar@0555950ead28 ancestor bar@0f2ff26688b9
premerge successful
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line1
line2
$ hg ci -m '5: merge'
$ hg debugindex bar
rev linkrev nodeid p1-nodeid p2-nodeid
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
2 4 ff4b45017382 d35118874825 000000000000
3 5 3701b4893544 ff4b45017382 5345f5ab8abd
Same thing, but with the merge on 3 having the rename
on the remote parent:
$ cd ..
$ hg clone -U -r 1 -r 2 a b
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 2 files (+1 heads)
new changesets 2665aaee66e9:0f2ff26688b9
$ cd b
$ hg up -C 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 2
merging foo and bar to bar
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line0
line1
line2
$ hg ci -m '3: merge with remote rename'
$ hg debugindex bar
rev linkrev nodeid p1-nodeid p2-nodeid
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
$ hg debugrename bar
bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2
$ hg debugindex foo
rev linkrev nodeid p1-nodeid p2-nodeid
0 0 690b295714ae 000000000000 000000000000
1 1 9e25c27b8757 690b295714ae 000000000000
Revert the content change from rev 2:
$ hg up -C 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm bar
$ echo line1 > bar
$ hg ci -m '4: revert content change from rev 2'
created new head
$ hg log --template '{rev}:{node|short} {parents}\n'
4:2263c1be0967 2:0f2ff26688b9
3:3ffa6b9e35f0 1:5cd961e4045d 2:0f2ff26688b9
2:0f2ff26688b9 0:2665aaee66e9
1:5cd961e4045d
0:2665aaee66e9
This should use bar@rev2 as the ancestor:
$ hg --debug merge 3
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 3ffa6b9e35f0
starting 4 threads for background file closing (?)
preserving bar for resolve of bar
bar: versions differ -> m
picked tool ':merge' for bar (binary False symlink False changedelete False)
merging bar
my bar@2263c1be0967+ other bar@3ffa6b9e35f0 ancestor bar@0f2ff26688b9
premerge successful
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line1
line2
$ hg ci -m '5: merge'
$ hg debugindex bar
rev linkrev nodeid p1-nodeid p2-nodeid
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
2 4 ff4b45017382 d35118874825 000000000000
3 5 3701b4893544 ff4b45017382 5345f5ab8abd
$ cd ..