phases: invalidate the phases set less often on retract boundary
We already have the information to update the phase set, so we do so directly
instead of invalidating the cache.
This show a sizeable speedup in our `perf::unbundle` benchmark on the
many-draft mozilla-try repository.
### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
# benchmark.name = hg.perf.perf-unbundle
# bin-env-vars.hg.flavor = no-rust
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.
issue6528 = disabled
# benchmark.variants.revs = last-10
before: 2.055259 seconds
after: 1.887064 seconds (-8.18%)
# benchmark.variants.revs = last-100
before: 2.409239 seconds
after: 2.222429 seconds (-7.75%)
# benchmark.variants.revs = last-1000
before: 3.945648 seconds
after: 3.762480 seconds (-4.64%)
Test for the full copytracing algorithm
=======================================
Initial Setup
=============
use git diff to see rename
$ cat << EOF >> $HGRCPATH
> [diff]
> git=yes
> EOF
Setup an history where one side copy and rename a file (and update it) while the other side update it.
$ hg init t
$ cd t
$ echo 1 > a
$ hg ci -qAm "first"
$ hg cp a b
$ hg mv a c
$ echo 2 >> b
$ echo 2 >> c
$ hg ci -qAm "second"
$ hg co -C 0
1 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo 0 > a
$ echo 1 >> a
$ hg ci -qAm "other"
$ hg log -G --patch
@ changeset: 2:add3f11052fa
| tag: tip
| parent: 0:b8bf91eeebbc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: other
|
| diff --git a/a b/a
| --- a/a
| +++ b/a
| @@ -1,1 +1,2 @@
| +0
| 1
|
| o changeset: 1:17c05bb7fcb6
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: second
|
| diff --git a/a b/b
| rename from a
| rename to b
| --- a/a
| +++ b/b
| @@ -1,1 +1,2 @@
| 1
| +2
| diff --git a/a b/c
| copy from a
| copy to c
| --- a/a
| +++ b/c
| @@ -1,1 +1,2 @@
| 1
| +2
|
o changeset: 0:b8bf91eeebbc
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: first
diff --git a/a b/a
new file mode 100644
--- /dev/null
+++ b/a
@@ -0,0 +1,1 @@
+1
Test Simple Merge
=================
$ hg merge --debug
unmatched files in other:
b
c
all copies found (* = to merge, ! = divergent, % = renamed and deleted):
on remote side:
src: 'a' -> dst: 'b' *
src: 'a' -> dst: 'c' *
checking for directory renames
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: b8bf91eeebbc, local: add3f11052fa+, remote: 17c05bb7fcb6
starting 4 threads for background file closing (?)
preserving a for resolve of b
preserving a for resolve of c
removing a
b: remote moved from a -> m
picked tool ':merge' for b (binary False symlink False changedelete False)
merging a and b to b
my b@add3f11052fa+ other b@17c05bb7fcb6 ancestor a@b8bf91eeebbc
premerge successful
c: remote moved from a -> m
picked tool ':merge' for c (binary False symlink False changedelete False)
merging a and c to c
my c@add3f11052fa+ other c@17c05bb7fcb6 ancestor a@b8bf91eeebbc
premerge successful
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
file b
$ cat b
0
1
2
file c
$ cat c
0
1
2
Test disabling copy tracing
===========================
first verify copy metadata was kept
-----------------------------------
$ hg up -qC 2
$ hg rebase --keep -d 1 -b 2 --config extensions.rebase=
rebasing 2:add3f11052fa tip "other"
merging b and a to b
merging c and a to c
$ cat b
0
1
2
next verify copy metadata is lost when disabled
------------------------------------------------
$ hg strip -r . --config extensions.strip=
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/t/.hg/strip-backup/550bd84c0cd3-fc575957-backup.hg
$ hg up -qC 2
$ hg rebase --keep -d 1 -b 2 --config extensions.rebase= --config experimental.copytrace=off --config ui.interactive=True << EOF
> c
> EOF
rebasing 2:add3f11052fa tip "other"
file 'a' was deleted in local [dest] but was modified in other [source].
You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
What do you want to do? c
$ cat b
1
2
$ cd ..
Verify disabling copy tracing still keeps copies from rebase source
-------------------------------------------------------------------
$ hg init copydisable
$ cd copydisable
$ touch a
$ hg ci -Aqm 'add a'
$ touch b
$ hg ci -Aqm 'add b, c'
$ hg cp b x
$ echo x >> x
$ hg ci -qm 'copy b->x'
$ hg up -q 1
$ touch z
$ hg ci -Aqm 'add z'
$ hg log -G -T '{rev} {desc}\n'
@ 3 add z
|
| o 2 copy b->x
|/
o 1 add b, c
|
o 0 add a
$ hg rebase -d . -b 2 --config extensions.rebase= --config experimental.copytrace=off
rebasing 2:6adcf8c12e7d "copy b->x"
saved backup bundle to $TESTTMP/copydisable/.hg/strip-backup/6adcf8c12e7d-ce4b3e75-rebase.hg
$ hg up -q 3
$ hg log -f x -T '{rev} {desc}\n'
3 copy b->x
1 add b, c
$ cd ../
test storage preservation
-------------------------
Verify rebase do not discard recorded copies data when copy tracing usage is
disabled.
Setup
$ hg init copydisable3
$ cd copydisable3
$ touch a
$ hg ci -Aqm 'add a'
$ hg cp a b
$ hg ci -Aqm 'copy a->b'
$ hg mv b c
$ hg ci -Aqm 'move b->c'
$ hg up -q 0
$ hg cp a b
$ echo b >> b
$ hg ci -Aqm 'copy a->b (2)'
$ hg log -G -T '{rev} {desc}\n'
@ 3 copy a->b (2)
|
| o 2 move b->c
| |
| o 1 copy a->b
|/
o 0 add a
Actual Test
A file is copied on one side and has been moved twice on the other side. the
file is copied from `0:a`, so the file history of the `3:b` should trace directly to `0:a`.
$ hg rebase -d 2 -s 3 --config extensions.rebase= --config experimental.copytrace=off
rebasing 3:47e1a9e6273b tip "copy a->b (2)"
saved backup bundle to $TESTTMP/copydisable3/.hg/strip-backup/47e1a9e6273b-2d099c59-rebase.hg
$ hg log -G -f b
@ changeset: 3:76024fb4b05b
: tag: tip
: user: test
: date: Thu Jan 01 00:00:00 1970 +0000
: summary: copy a->b (2)
:
o changeset: 0:ac82d8b1f7c4
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add a