branchcache: add a "pure topological head" fast path
In a narrow but actually quick common case, all topological heads are all on
the same branch and all open. In this case, computing the branch map is very
simple. We can quickly detect situation where this situation will not change.
So we update the V3 format to be able to express this situation and upgrade the
update code to detect we remains in that mode.
The branch cache is populated with the actual value when the branch map is
accessed, but the update_disk method can do the update without needing to
populate it.
#testcases mmap nommap
#testcases v2 v3
#if mmap
$ cat <<EOF >> $HGRCPATH
> [storage]
> revbranchcache.mmap=true
> EOF
#endif
#if v3
$ cat <<EOF >> $HGRCPATH
> [experimental]
> branch-cache-v3=yes
> EOF
#else
$ cat <<EOF >> $HGRCPATH
> [experimental]
> branch-cache-v3=no
> EOF
#endif
$ hg init a
$ cd a
Verify checking branch of nullrev before the cache is created doesnt crash
$ hg log -r 'branch(.)' -T '{branch}\n'
Basic test
$ echo 'root' >root
$ hg add root
$ hg commit -d '0 0' -m "Adding root node"
$ echo 'a' >a
$ hg add a
$ hg branch a
marked working directory as branch a
(branches are permanent and global, did you want a bookmark?)
$ hg commit -d '1 0' -m "Adding a branch"
$ hg branch q
marked working directory as branch q
$ echo 'aa' >a
$ hg branch -C
reset working directory to branch a
$ hg commit -d '2 0' -m "Adding to a branch"
$ hg update -C 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo 'b' >b
$ hg add b
$ hg branch b
marked working directory as branch b
$ hg commit -d '2 0' -m "Adding b branch"
$ echo 'bh1' >bh1
$ hg add bh1
$ hg commit -d '3 0' -m "Adding b branch head 1"
$ hg update -C 2
1 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo 'bh2' >bh2
$ hg add bh2
$ hg commit -d '4 0' -m "Adding b branch head 2"
$ echo 'c' >c
$ hg add c
$ hg branch c
marked working directory as branch c
$ hg commit -d '5 0' -m "Adding c branch"
reserved names
$ hg branch tip
abort: the name 'tip' is reserved
[10]
$ hg branch null
abort: the name 'null' is reserved
[10]
$ hg branch .
abort: the name '.' is reserved
[10]
invalid characters
$ hg branch 'foo:bar'
abort: ':' cannot be used in a name
[10]
$ hg branch 'foo
> bar'
abort: '\n' cannot be used in a name
[10]
trailing or leading spaces should be stripped before testing duplicates
$ hg branch 'b '
abort: a branch of the same name already exists
(use 'hg update' to switch to it)
[10]
$ hg branch ' b'
abort: a branch of the same name already exists
(use 'hg update' to switch to it)
[10]
underscores in numeric branch names (issue6737)
$ hg branch 2700_210
marked working directory as branch 2700_210
verify update will accept invalid legacy branch names
$ hg init test-invalid-branch-name
$ cd test-invalid-branch-name
$ hg unbundle -u "$TESTDIR"/bundles/test-invalid-branch-name.hg
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 2 files
new changesets f0e4c7f04036:33c2ceb9310b (3 drafts)
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg update '"colon:test"'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ..
$ echo 'd' >d
$ hg add d
$ hg branch 'a branch name much longer than the default justification used by branches'
marked working directory as branch a branch name much longer than the default justification used by branches
$ hg commit -d '6 0' -m "Adding d branch"
$ hg branches
a branch name much longer than the default justification used by branches 7:10ff5895aa57
b 4:aee39cd168d0
c 6:589736a22561 (inactive)
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
-------
$ hg branches -a
a branch name much longer than the default justification used by branches 7:10ff5895aa57
b 4:aee39cd168d0
--- Branch a
$ hg log -b a
changeset: 5:d8cbc61dbaa6
branch: a
parent: 2:881fe2b92ad0
user: test
date: Thu Jan 01 00:00:04 1970 +0000
summary: Adding b branch head 2
changeset: 2:881fe2b92ad0
branch: a
user: test
date: Thu Jan 01 00:00:02 1970 +0000
summary: Adding to a branch
changeset: 1:dd6b440dd85a
branch: a
user: test
date: Thu Jan 01 00:00:01 1970 +0000
summary: Adding a branch
---- Branch b
$ hg log -b b
changeset: 4:aee39cd168d0
branch: b
user: test
date: Thu Jan 01 00:00:03 1970 +0000
summary: Adding b branch head 1
changeset: 3:ac22033332d1
branch: b
parent: 0:19709c5a4e75
user: test
date: Thu Jan 01 00:00:02 1970 +0000
summary: Adding b branch
---- going to test branch listing by rev
$ hg branches -r0
default 0:19709c5a4e75 (inactive)
$ hg branches -qr0
default
--- now more than one rev
$ hg branches -r2:5
b 4:aee39cd168d0
a 5:d8cbc61dbaa6 (inactive)
$ hg branches -qr2:5
b
a
---- going to test branch closing
$ hg branches
a branch name much longer than the default justification used by branches 7:10ff5895aa57
b 4:aee39cd168d0
c 6:589736a22561 (inactive)
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
$ hg up -C b
2 files updated, 0 files merged, 4 files removed, 0 files unresolved
$ echo 'xxx1' >> b
$ hg commit -d '7 0' -m 'adding cset to branch b'
$ hg up -C aee39cd168d0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo 'xxx2' >> b
$ hg commit -d '8 0' -m 'adding head to branch b'
created new head
$ echo 'xxx3' >> b
$ hg commit -d '9 0' -m 'adding another cset to branch b'
$ hg branches
b 10:bfbe841b666e
a branch name much longer than the default justification used by branches 7:10ff5895aa57
c 6:589736a22561 (inactive)
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
$ hg heads --closed
changeset: 10:bfbe841b666e
branch: b
tag: tip
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: adding another cset to branch b
changeset: 8:eebb944467c9
branch: b
parent: 4:aee39cd168d0
user: test
date: Thu Jan 01 00:00:07 1970 +0000
summary: adding cset to branch b
changeset: 7:10ff5895aa57
branch: a branch name much longer than the default justification used by branches
user: test
date: Thu Jan 01 00:00:06 1970 +0000
summary: Adding d branch
changeset: 6:589736a22561
branch: c
user: test
date: Thu Jan 01 00:00:05 1970 +0000
summary: Adding c branch
changeset: 5:d8cbc61dbaa6
branch: a
parent: 2:881fe2b92ad0
user: test
date: Thu Jan 01 00:00:04 1970 +0000
summary: Adding b branch head 2
changeset: 0:19709c5a4e75
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Adding root node
$ hg heads
changeset: 10:bfbe841b666e
branch: b
tag: tip
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: adding another cset to branch b
changeset: 8:eebb944467c9
branch: b
parent: 4:aee39cd168d0
user: test
date: Thu Jan 01 00:00:07 1970 +0000
summary: adding cset to branch b
changeset: 7:10ff5895aa57
branch: a branch name much longer than the default justification used by branches
user: test
date: Thu Jan 01 00:00:06 1970 +0000
summary: Adding d branch
changeset: 6:589736a22561
branch: c
user: test
date: Thu Jan 01 00:00:05 1970 +0000
summary: Adding c branch
changeset: 5:d8cbc61dbaa6
branch: a
parent: 2:881fe2b92ad0
user: test
date: Thu Jan 01 00:00:04 1970 +0000
summary: Adding b branch head 2
changeset: 0:19709c5a4e75
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Adding root node
$ hg commit -d '9 0' --close-branch -m 'prune bad branch'
$ hg branches -a
b 8:eebb944467c9
a branch name much longer than the default justification used by branches 7:10ff5895aa57
$ hg up -C b
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg commit -d '9 0' --close-branch -m 'close this part branch too'
$ hg commit -d '9 0' --close-branch -m 're-closing this branch'
abort: current revision is already a branch closing head
[10]
$ echo foo > b
$ hg commit -d '9 0' --close-branch -m 're-closing this branch'
$ echo bar > b
$ hg commit -d '9 0' --close-branch -m 're-closing this branch' bh1
abort: current revision is already a branch closing head
[10]
$ hg commit -d '9 0' --close-branch -m 're-closing this branch' b
$ echo baz > b
$ hg commit -d '9 0' --close-branch -m 'empty re-closing this branch' -X b
abort: current revision is already a branch closing head
[10]
$ hg revert b
$ hg debugstrip --rev 13: --no-backup
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg revert --all --no-backup
$ hg log -r tip --debug
changeset: 12:e3d49c0575d8fc2cb1cd6859c747c14f5f6d499f
branch: b
tag: tip
phase: draft
parent: 8:eebb944467c9fb9651ed232aeaf31b3c0a7fc6c1
parent: -1:0000000000000000000000000000000000000000
manifest: 8:6f9ed32d2b310e391a4f107d5f0f071df785bfee
user: test
date: Thu Jan 01 00:00:09 1970 +0000
extra: branch=b
extra: close=1
description:
close this part branch too
--- b branch should be inactive
$ hg branches
a branch name much longer than the default justification used by branches 7:10ff5895aa57
c 6:589736a22561 (inactive)
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
$ hg branches -c
a branch name much longer than the default justification used by branches 7:10ff5895aa57
b 12:e3d49c0575d8 (closed)
c 6:589736a22561 (inactive)
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
$ hg branches -a
a branch name much longer than the default justification used by branches 7:10ff5895aa57
$ hg branches -q
a branch name much longer than the default justification used by branches
c
a
default
$ hg heads b
no open branch heads found on branches b
[1]
$ hg heads --closed b
changeset: 12:e3d49c0575d8
branch: b
tag: tip
parent: 8:eebb944467c9
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: close this part branch too
changeset: 11:d3f163457ebf
branch: b
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: prune bad branch
$ echo 'xxx4' >> b
$ hg commit -d '9 0' -m 'reopen branch with a change'
reopening closed branch head 12
--- branch b is back in action
$ hg branches -a
b 13:e23b5505d1ad
a branch name much longer than the default justification used by branches 7:10ff5895aa57
---- test heads listings
$ hg heads
changeset: 13:e23b5505d1ad
branch: b
tag: tip
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: reopen branch with a change
changeset: 7:10ff5895aa57
branch: a branch name much longer than the default justification used by branches
user: test
date: Thu Jan 01 00:00:06 1970 +0000
summary: Adding d branch
changeset: 6:589736a22561
branch: c
user: test
date: Thu Jan 01 00:00:05 1970 +0000
summary: Adding c branch
changeset: 5:d8cbc61dbaa6
branch: a
parent: 2:881fe2b92ad0
user: test
date: Thu Jan 01 00:00:04 1970 +0000
summary: Adding b branch head 2
changeset: 0:19709c5a4e75
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Adding root node
branch default
$ hg heads default
changeset: 0:19709c5a4e75
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Adding root node
branch a
$ hg heads a
changeset: 5:d8cbc61dbaa6
branch: a
parent: 2:881fe2b92ad0
user: test
date: Thu Jan 01 00:00:04 1970 +0000
summary: Adding b branch head 2
$ hg heads --active a
no open branch heads found on branches a
[1]
branch b
$ hg heads b
changeset: 13:e23b5505d1ad
branch: b
tag: tip
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: reopen branch with a change
$ hg heads --closed b
changeset: 13:e23b5505d1ad
branch: b
tag: tip
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: reopen branch with a change
changeset: 11:d3f163457ebf
branch: b
user: test
date: Thu Jan 01 00:00:09 1970 +0000
summary: prune bad branch
reclose branch
$ hg up -C c
3 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ hg commit -d '9 0' --close-branch -m 'reclosing this branch'
$ hg branches
b 13:e23b5505d1ad
a branch name much longer than the default justification used by branches 7:10ff5895aa57
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
$ hg branches --closed
b 13:e23b5505d1ad
a branch name much longer than the default justification used by branches 7:10ff5895aa57
c 14:f894c25619d3 (closed)
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
multihead branch
$ hg up -C default
0 files updated, 0 files merged, 3 files removed, 0 files unresolved
$ hg branch m
marked working directory as branch m
$ touch m
$ hg add m
$ hg commit -d '10 0' -m 'multihead base'
$ echo "m1" >m
$ hg commit -d '10 0' -m 'head 1'
$ hg up -C '.^'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo "m2" >m
$ hg commit -d '10 0' -m 'head 2'
created new head
$ hg log -b m
changeset: 17:df343b0df04f
branch: m
tag: tip
parent: 15:f3447637f53e
user: test
date: Thu Jan 01 00:00:10 1970 +0000
summary: head 2
changeset: 16:a58ca5d3bdf3
branch: m
user: test
date: Thu Jan 01 00:00:10 1970 +0000
summary: head 1
changeset: 15:f3447637f53e
branch: m
parent: 0:19709c5a4e75
user: test
date: Thu Jan 01 00:00:10 1970 +0000
summary: multihead base
$ hg heads --topo m
changeset: 17:df343b0df04f
branch: m
tag: tip
parent: 15:f3447637f53e
user: test
date: Thu Jan 01 00:00:10 1970 +0000
summary: head 2
changeset: 16:a58ca5d3bdf3
branch: m
user: test
date: Thu Jan 01 00:00:10 1970 +0000
summary: head 1
$ hg branches
m 17:df343b0df04f
b 13:e23b5505d1ad
a branch name much longer than the default justification used by branches 7:10ff5895aa57
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
partially merge multihead branch
$ hg up -C default
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg branch md
marked working directory as branch md
$ hg merge m
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg commit -d '11 0' -m 'merge head 2'
$ hg heads --topo m
changeset: 16:a58ca5d3bdf3
branch: m
user: test
date: Thu Jan 01 00:00:10 1970 +0000
summary: head 1
$ hg branches
md 18:c914c99f1fbb
m 17:df343b0df04f
b 13:e23b5505d1ad
a branch name much longer than the default justification used by branches 7:10ff5895aa57
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
partially close multihead branch
$ hg up -C a58ca5d3bdf3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg commit -d '12 0' -m 'close head 1' --close-branch
$ hg heads --topo m
changeset: 19:cd21a80baa3d
branch: m
tag: tip
parent: 16:a58ca5d3bdf3
user: test
date: Thu Jan 01 00:00:12 1970 +0000
summary: close head 1
$ hg branches
md 18:c914c99f1fbb
b 13:e23b5505d1ad
a branch name much longer than the default justification used by branches 7:10ff5895aa57
m 17:df343b0df04f (inactive)
a 5:d8cbc61dbaa6 (inactive)
default 0:19709c5a4e75 (inactive)
default branch colors:
$ cat <<EOF >> $HGRCPATH
> [extensions]
> color =
> [color]
> mode = ansi
> EOF
$ hg up -C b
2 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg branches --color=always
\x1b[0;0mmd\x1b[0m\x1b[0;33m 18:c914c99f1fbb\x1b[0m (esc)
\x1b[0;32mb\x1b[0m\x1b[0;33m 13:e23b5505d1ad\x1b[0m (esc)
\x1b[0;0ma branch name much longer than the default justification used by branches\x1b[0m\x1b[0;33m 7:10ff5895aa57\x1b[0m (esc)
\x1b[0;0mm\x1b[0m\x1b[0;33m 17:df343b0df04f\x1b[0m (inactive) (esc)
\x1b[0;0ma\x1b[0m\x1b[0;33m 5:d8cbc61dbaa6\x1b[0m (inactive) (esc)
\x1b[0;0mdefault\x1b[0m\x1b[0;33m 0:19709c5a4e75\x1b[0m (inactive) (esc)
default closed branch color:
$ hg branches --color=always --closed
\x1b[0;0mmd\x1b[0m\x1b[0;33m 18:c914c99f1fbb\x1b[0m (esc)
\x1b[0;32mb\x1b[0m\x1b[0;33m 13:e23b5505d1ad\x1b[0m (esc)
\x1b[0;0ma branch name much longer than the default justification used by branches\x1b[0m\x1b[0;33m 7:10ff5895aa57\x1b[0m (esc)
\x1b[0;0mm\x1b[0m\x1b[0;33m 17:df343b0df04f\x1b[0m (inactive) (esc)
\x1b[0;30;1mc\x1b[0m\x1b[0;33m 14:f894c25619d3\x1b[0m (closed) (esc)
\x1b[0;0ma\x1b[0m\x1b[0;33m 5:d8cbc61dbaa6\x1b[0m (inactive) (esc)
\x1b[0;0mdefault\x1b[0m\x1b[0;33m 0:19709c5a4e75\x1b[0m (inactive) (esc)
$ cat <<EOF >> $HGRCPATH
> [extensions]
> color =
> [color]
> branches.active = green
> branches.closed = blue
> branches.current = red
> branches.inactive = magenta
> log.changeset = cyan
> EOF
custom branch colors:
$ hg branches --color=always
\x1b[0;32mmd\x1b[0m\x1b[0;36m 18:c914c99f1fbb\x1b[0m (esc)
\x1b[0;31mb\x1b[0m\x1b[0;36m 13:e23b5505d1ad\x1b[0m (esc)
\x1b[0;32ma branch name much longer than the default justification used by branches\x1b[0m\x1b[0;36m 7:10ff5895aa57\x1b[0m (esc)
\x1b[0;35mm\x1b[0m\x1b[0;36m 17:df343b0df04f\x1b[0m (inactive) (esc)
\x1b[0;35ma\x1b[0m\x1b[0;36m 5:d8cbc61dbaa6\x1b[0m (inactive) (esc)
\x1b[0;35mdefault\x1b[0m\x1b[0;36m 0:19709c5a4e75\x1b[0m (inactive) (esc)
custom closed branch color:
$ hg branches --color=always --closed
\x1b[0;32mmd\x1b[0m\x1b[0;36m 18:c914c99f1fbb\x1b[0m (esc)
\x1b[0;31mb\x1b[0m\x1b[0;36m 13:e23b5505d1ad\x1b[0m (esc)
\x1b[0;32ma branch name much longer than the default justification used by branches\x1b[0m\x1b[0;36m 7:10ff5895aa57\x1b[0m (esc)
\x1b[0;35mm\x1b[0m\x1b[0;36m 17:df343b0df04f\x1b[0m (inactive) (esc)
\x1b[0;34mc\x1b[0m\x1b[0;36m 14:f894c25619d3\x1b[0m (closed) (esc)
\x1b[0;35ma\x1b[0m\x1b[0;36m 5:d8cbc61dbaa6\x1b[0m (inactive) (esc)
\x1b[0;35mdefault\x1b[0m\x1b[0;36m 0:19709c5a4e75\x1b[0m (inactive) (esc)
template output:
$ hg branches -Tjson --closed
[
{
"active": true,
"branch": "md",
"closed": false,
"current": false,
"node": "c914c99f1fbb2b1d785a0a939ed3f67275df18e9",
"rev": 18
},
{
"active": true,
"branch": "b",
"closed": false,
"current": true,
"node": "e23b5505d1ad24aab6f84fd8c7cb8cd8e5e93be0",
"rev": 13
},
{
"active": true,
"branch": "a branch name much longer than the default justification used by branches",
"closed": false,
"current": false,
"node": "10ff5895aa5793bd378da574af8cec8ea408d831",
"rev": 7
},
{
"active": false,
"branch": "m",
"closed": false,
"current": false,
"node": "df343b0df04feb2a946cd4b6e9520e552fef14ee",
"rev": 17
},
{
"active": false,
"branch": "c",
"closed": true,
"current": false,
"node": "f894c25619d3f1484639d81be950e0a07bc6f1f6",
"rev": 14
},
{
"active": false,
"branch": "a",
"closed": false,
"current": false,
"node": "d8cbc61dbaa6dc817175d1e301eecb863f280832",
"rev": 5
},
{
"active": false,
"branch": "default",
"closed": false,
"current": false,
"node": "19709c5a4e75bf938f8e349aff97438539bb729e",
"rev": 0
}
]
$ hg branches --closed -T '{if(closed, "{branch}\n")}'
c
$ hg branches -T '{word(0, branch)}: {desc|firstline}\n'
md: merge head 2
b: reopen branch with a change
a: Adding d branch
m: head 2
a: Adding b branch head 2
default: Adding root node
$ cat <<'EOF' > "$TESTTMP/map-myjson"
> docheader = '\{\n'
> docfooter = '\n}\n'
> separator = ',\n'
> branches = ' {dict(branch, node|short)|json}'
> EOF
$ hg branches -T "$TESTTMP/map-myjson"
{
{"branch": "md", "node": "c914c99f1fbb"},
{"branch": "b", "node": "e23b5505d1ad"},
{"branch": "a branch *", "node": "10ff5895aa57"}, (glob)
{"branch": "m", "node": "df343b0df04f"},
{"branch": "a", "node": "d8cbc61dbaa6"},
{"branch": "default", "node": "19709c5a4e75"}
}
$ cat <<'EOF' >> .hg/hgrc
> [templates]
> myjson = ' {dict(branch, node|short)|json}'
> myjson:docheader = '\{\n'
> myjson:docfooter = '\n}\n'
> myjson:separator = ',\n'
> EOF
$ hg branches -T myjson
{
{"branch": "md", "node": "c914c99f1fbb"},
{"branch": "b", "node": "e23b5505d1ad"},
{"branch": "a branch *", "node": "10ff5895aa57"}, (glob)
{"branch": "m", "node": "df343b0df04f"},
{"branch": "a", "node": "d8cbc61dbaa6"},
{"branch": "default", "node": "19709c5a4e75"}
}
$ cat <<'EOF' >> .hg/hgrc
> [templates]
> :docheader = 'should not be selected as a docheader for literal templates\n'
> EOF
$ hg branches -T '{branch}\n'
md
b
a branch name much longer than the default justification used by branches
m
a
default
Tests of revision branch name caching
We rev branch cache is updated automatically. In these tests we use a trick to
trigger rebuilds. We remove the branch head cache and run 'hg head' to cause a
rebuild that also will populate the rev branch cache.
revision branch cache is created when building the branch head cache
$ rm -rf .hg/cache; hg head a -T '{rev}\n'
5
$ f --hexdump --size .hg/cache/rbc-*
.hg/cache/rbc-names-v1: size=92
0000: 64 65 66 61 75 6c 74 00 61 00 62 00 63 00 61 20 |default.a.b.c.a |
0010: 62 72 61 6e 63 68 20 6e 61 6d 65 20 6d 75 63 68 |branch name much|
0020: 20 6c 6f 6e 67 65 72 20 74 68 61 6e 20 74 68 65 | longer than the|
0030: 20 64 65 66 61 75 6c 74 20 6a 75 73 74 69 66 69 | default justifi|
0040: 63 61 74 69 6f 6e 20 75 73 65 64 20 62 79 20 62 |cation used by b|
0050: 72 61 6e 63 68 65 73 00 6d 00 6d 64 |ranches.m.md|
.hg/cache/rbc-revs-v1: size=160
0000: 19 70 9c 5a 00 00 00 00 dd 6b 44 0d 00 00 00 01 |.p.Z.....kD.....|
0010: 88 1f e2 b9 00 00 00 01 ac 22 03 33 00 00 00 02 |.........".3....|
0020: ae e3 9c d1 00 00 00 02 d8 cb c6 1d 00 00 00 01 |................|
0030: 58 97 36 a2 00 00 00 03 10 ff 58 95 00 00 00 04 |X.6.......X.....|
0040: ee bb 94 44 00 00 00 02 5f 40 61 bb 00 00 00 02 |...D...._@a.....|
0050: bf be 84 1b 00 00 00 02 d3 f1 63 45 80 00 00 02 |..........cE....|
0060: e3 d4 9c 05 80 00 00 02 e2 3b 55 05 00 00 00 02 |.........;U.....|
0070: f8 94 c2 56 80 00 00 03 f3 44 76 37 00 00 00 05 |...V.....Dv7....|
0080: a5 8c a5 d3 00 00 00 05 df 34 3b 0d 00 00 00 05 |.........4;.....|
0090: c9 14 c9 9f 00 00 00 06 cd 21 a8 0b 80 00 00 05 |.........!......|
no errors when revbranchcache is not writable
$ echo >> .hg/cache/rbc-revs-v1
$ mv .hg/cache/rbc-revs-v1 .hg/cache/rbc-revs-v1_
$ mkdir .hg/cache/rbc-revs-v1
$ rm -f .hg/cache/branch* && hg head a -T '{rev}\n'
5
$ rmdir .hg/cache/rbc-revs-v1
$ mv .hg/cache/rbc-revs-v1_ .hg/cache/rbc-revs-v1
no errors when wlock cannot be acquired
#if unix-permissions
$ mv .hg/cache/rbc-revs-v1 .hg/cache/rbc-revs-v1_
$ rm -f .hg/cache/branch*
$ chmod 555 .hg
$ hg head a -T '{rev}\n'
5
$ chmod 755 .hg
$ mv .hg/cache/rbc-revs-v1_ .hg/cache/rbc-revs-v1
#endif
recovery from invalid cache revs file with trailing data
$ echo >> .hg/cache/rbc-revs-v1
$ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug
5
truncating cache/rbc-revs-v1 to 160
$ f --size .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=160
recovery from invalid cache file with partial last record
$ mv .hg/cache/rbc-revs-v1 .
$ f -qDB 119 rbc-revs-v1 > .hg/cache/rbc-revs-v1
$ f --size .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=119
$ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug
5
truncating cache/rbc-revs-v1 to 112
$ f --size .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=160
recovery from invalid cache file with missing record - no truncation
$ mv .hg/cache/rbc-revs-v1 .
$ f -qDB 112 rbc-revs-v1 > .hg/cache/rbc-revs-v1
$ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug
5
$ f --size .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=160
recovery from invalid cache file with some bad records
$ mv .hg/cache/rbc-revs-v1 .
$ f -qDB 8 rbc-revs-v1 > .hg/cache/rbc-revs-v1
$ f --size .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=8
$ f -qDB 112 rbc-revs-v1 >> .hg/cache/rbc-revs-v1
$ f --size .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=120
$ hg log -r 'branch(.)' -T '{rev} ' --debug
history modification detected - truncating revision branch cache to revision * (glob)
history modification detected - truncating revision branch cache to revision 1
3 4 8 9 10 11 12 13 truncating cache/rbc-revs-v1 to 8
$ rm -f .hg/cache/branch* && hg head a -T '{rev}\n' --debug
5
truncating cache/rbc-revs-v1 to 104
$ f --size --hexdump --bytes=16 .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=160
0000: 19 70 9c 5a 00 00 00 00 dd 6b 44 0d 00 00 00 01 |.p.Z.....kD.....|
cache is updated when committing
$ hg branch i-will-regret-this
marked working directory as branch i-will-regret-this
$ hg ci -m regrets
$ f --size .hg/cache/rbc-*
.hg/cache/rbc-names-v1: size=111
.hg/cache/rbc-revs-v1: size=168
update after rollback - the cache will be correct but rbc-names will will still
contain the branch name even though it no longer is used
$ hg up -qr '.^'
$ hg rollback -qf
$ f --size .hg/cache/rbc-names-*
.hg/cache/rbc-names-v1: size=111
$ grep "i-will-regret-this" .hg/cache/rbc-names-* > /dev/null
$ f --size .hg/cache/rbc-revs-*
.hg/cache/rbc-revs-v1: size=160
cache is updated/truncated when stripping - it is thus very hard to get in a
situation where the cache is out of sync and the hash check detects it
$ hg --config extensions.strip= strip -r tip --nob
$ f --size .hg/cache/rbc-revs*
.hg/cache/rbc-revs-v1: size=152
cache is rebuilt when corruption is detected
$ echo > .hg/cache/rbc-names-v1
$ hg log -r '5:&branch(.)' -T '{rev} ' --debug
referenced branch names not found - rebuilding revision branch cache from scratch
8 9 10 11 12 13 truncating cache/rbc-revs-v1 to 40
$ f --size .hg/cache/rbc-names-*
.hg/cache/rbc-names-v1: size=84
$ grep "i-will-regret-this" .hg/cache/rbc-names-* > /dev/null
[1]
$ f --size .hg/cache/rbc-revs-*
.hg/cache/rbc-revs-v1: size=152
Test that cache files are created and grows correctly:
$ rm .hg/cache/rbc*
$ hg log -r "5 & branch(5)" -T "{rev}\n"
5
(here v3 is querying branch info for heads so it warm much more of the cache)
#if v2
$ f --size .hg/cache/rbc-*
.hg/cache/rbc-names-v1: size=1
.hg/cache/rbc-revs-v1: size=48
#else
$ f --size .hg/cache/rbc-*
.hg/cache/rbc-names-v1: size=84
.hg/cache/rbc-revs-v1: size=152
#endif
$ cd ..
Test for multiple incorrect branch cache entries:
$ hg init b
$ cd b
$ touch f
$ hg ci -Aqmf
$ echo >> f
$ hg ci -Amf
$ hg branch -q branch
$ hg ci -Amf
#if v2
$ f --size --sha256 .hg/cache/rbc-*
.hg/cache/rbc-names-v1: size=14, sha256=d376f7eea9a7e28fac6470e78dae753c81a5543c9ad436e96999590e004a281c
.hg/cache/rbc-revs-v1: size=24, sha256=ec89032fd4e66e7282cb6e403848c681a855a9c36c6b44d19179218553b78779
$ : > .hg/cache/rbc-revs-v1
No superfluous rebuilding of cache:
$ hg log -r "branch(null)&branch(branch)" --debug
$ f --size --sha256 .hg/cache/rbc-*
.hg/cache/rbc-names-v1: size=14, sha256=d376f7eea9a7e28fac6470e78dae753c81a5543c9ad436e96999590e004a281c
.hg/cache/rbc-revs-v1: size=24, sha256=ec89032fd4e66e7282cb6e403848c681a855a9c36c6b44d19179218553b78779
#endif
$ cd ..
Test to make sure that `--close-branch` only works on a branch head:
--------------------------------------------------------------------
$ hg init closebranch
$ cd closebranch
$ for ch in a b c; do
> echo $ch > $ch
> hg add $ch
> hg ci -m "added "$ch
> done;
$ hg up -r "desc('added b')"
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
trying to close branch from a cset which is not a branch head
it should abort:
$ hg ci -m "closing branch" --close-branch
abort: can only close branch heads
(use --force-close-branch to close branch from a non-head changeset)
[10]
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg log -GT "{rev}: {node|short} {desc|firstline}\n\t{branch}\n\n"
o 2: 155349b645be added c
| default
|
o 1: 5f6d8a4bf34a added b
| default
|
@ 0: 9092f1db7931 added a
default
Test --force-close-branch to close a branch from a non-head changeset:
---------------------------------------------------------------------
$ hg show stack --config extensions.show=
o 1553 added c
o 5f6d added b
@ 9092 added a
$ hg ci -m "branch closed" --close-branch
abort: can only close branch heads
(use --force-close-branch to close branch from a non-head changeset)
[10]
$ hg ci -m "branch closed" --force-close-branch
created new head
$ cd ..
Test various special cases for the branchmap
--------------------------------------------
Basic fork of the same branch
$ hg init branchmap-testing1
$ cd branchmap-testing1
$ hg debugbuild '@A . :base . :p1 *base /p1'
$ hg log -G
o changeset: 3:71ca9a6d524e
|\ branch: A
| | tag: tip
| | parent: 2:a3b807b3ff0b
| | parent: 1:99ba08759bc7
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:03 1970 +0000
| | summary: r3
| |
| o changeset: 2:a3b807b3ff0b
| | branch: A
| | parent: 0:2ab8003a1750
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:02 1970 +0000
| | summary: r2
| |
o | changeset: 1:99ba08759bc7
|/ branch: A
| tag: p1
| user: debugbuilddag
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: r1
|
o changeset: 0:2ab8003a1750
branch: A
tag: base
user: debugbuilddag
date: Thu Jan 01 00:00:00 1970 +0000
summary: r0
$ hg branches
A 3:71ca9a6d524e
$ hg clone -r 1 -r 2 . ../branchmap-testing1-clone
adding changesets
adding manifests
adding file changes
added 3 changesets with 0 changes to 0 files (+1 heads)
new changesets 2ab8003a1750:a3b807b3ff0b
updating to branch A
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ../branchmap-testing1-clone
$ hg pull ../branchmap-testing1
pulling from ../branchmap-testing1
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (-1 heads)
new changesets 71ca9a6d524e
(run 'hg update' to get a working copy)
$ hg branches
A 3:71ca9a6d524e
$ cd ..
Switching to a different branch and back
$ hg init branchmap-testing2
$ cd branchmap-testing2
$ hg debugbuild '@A . @B . @A .'
$ hg log -G
o changeset: 2:9699e9f260b5
| branch: A
| tag: tip
| user: debugbuilddag
| date: Thu Jan 01 00:00:02 1970 +0000
| summary: r2
|
o changeset: 1:0bc7d348d965
| branch: B
| user: debugbuilddag
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: r1
|
o changeset: 0:2ab8003a1750
branch: A
user: debugbuilddag
date: Thu Jan 01 00:00:00 1970 +0000
summary: r0
$ hg branches
A 2:9699e9f260b5
B 1:0bc7d348d965 (inactive)
$ hg clone -r 1 . ../branchmap-testing2-clone
adding changesets
adding manifests
adding file changes
added 2 changesets with 0 changes to 0 files
new changesets 2ab8003a1750:0bc7d348d965
updating to branch B
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ../branchmap-testing2-clone
$ hg pull ../branchmap-testing2
pulling from ../branchmap-testing2
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files
new changesets 9699e9f260b5
(run 'hg update' to get a working copy)
$ hg branches
A 2:9699e9f260b5
B 1:0bc7d348d965 (inactive)
$ cd ..
A fork on a branch switching to a different branch and back
is still collecting the fork.
$ hg init branchmap-testing3
$ cd branchmap-testing3
$ hg debugbuild '@A . :base . :p1 *base @B . @A /p1'
$ hg log -G
o changeset: 4:3614a1711d23
|\ branch: A
| | tag: tip
| | parent: 3:e9c8abcf65aa
| | parent: 1:99ba08759bc7
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:04 1970 +0000
| | summary: r4
| |
| o changeset: 3:e9c8abcf65aa
| | branch: B
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:03 1970 +0000
| | summary: r3
| |
| o changeset: 2:a3b807b3ff0b
| | branch: A
| | parent: 0:2ab8003a1750
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:02 1970 +0000
| | summary: r2
| |
o | changeset: 1:99ba08759bc7
|/ branch: A
| tag: p1
| user: debugbuilddag
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: r1
|
o changeset: 0:2ab8003a1750
branch: A
tag: base
user: debugbuilddag
date: Thu Jan 01 00:00:00 1970 +0000
summary: r0
$ hg branches
A 4:3614a1711d23
B 3:e9c8abcf65aa (inactive)
$ hg clone -r 1 -r 3 . ../branchmap-testing3-clone
adding changesets
adding manifests
adding file changes
added 4 changesets with 0 changes to 0 files (+1 heads)
new changesets 2ab8003a1750:e9c8abcf65aa
updating to branch A
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ../branchmap-testing3-clone
$ hg pull ../branchmap-testing3
pulling from ../branchmap-testing3
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (-1 heads)
new changesets 3614a1711d23
(run 'hg update' to get a working copy)
$ hg branches
A 4:3614a1711d23
B 3:e9c8abcf65aa (inactive)
$ cd ..
Intermediary parents are on different branches.
$ hg init branchmap-testing4
$ cd branchmap-testing4
$ hg debugbuild '@A . @B :base . @A :p1 *base @C . @A /p1'
$ hg log -G
o changeset: 4:4bf67499b70a
|\ branch: A
| | tag: tip
| | parent: 3:4a546028fa8f
| | parent: 1:0bc7d348d965
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:04 1970 +0000
| | summary: r4
| |
| o changeset: 3:4a546028fa8f
| | branch: C
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:03 1970 +0000
| | summary: r3
| |
| o changeset: 2:a3b807b3ff0b
| | branch: A
| | parent: 0:2ab8003a1750
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:02 1970 +0000
| | summary: r2
| |
o | changeset: 1:0bc7d348d965
|/ branch: B
| tag: p1
| user: debugbuilddag
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: r1
|
o changeset: 0:2ab8003a1750
branch: A
tag: base
user: debugbuilddag
date: Thu Jan 01 00:00:00 1970 +0000
summary: r0
$ hg branches
A 4:4bf67499b70a
C 3:4a546028fa8f (inactive)
B 1:0bc7d348d965 (inactive)
$ hg clone -r 1 -r 3 . ../branchmap-testing4-clone
adding changesets
adding manifests
adding file changes
added 4 changesets with 0 changes to 0 files (+1 heads)
new changesets 2ab8003a1750:4a546028fa8f
updating to branch B
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ../branchmap-testing4-clone
$ hg pull ../branchmap-testing4
pulling from ../branchmap-testing4
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (-1 heads)
new changesets 4bf67499b70a
(run 'hg update' to get a working copy)
$ hg branches
A 4:4bf67499b70a
C 3:4a546028fa8f (inactive)
B 1:0bc7d348d965 (inactive)
$ cd ..
Check that the cache are not written too early
----------------------------------------------
$ hg log -R branchmap-testing1 -G
o changeset: 3:71ca9a6d524e
|\ branch: A
| | tag: tip
| | parent: 2:a3b807b3ff0b
| | parent: 1:99ba08759bc7
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:03 1970 +0000
| | summary: r3
| |
| o changeset: 2:a3b807b3ff0b
| | branch: A
| | parent: 0:2ab8003a1750
| | user: debugbuilddag
| | date: Thu Jan 01 00:00:02 1970 +0000
| | summary: r2
| |
o | changeset: 1:99ba08759bc7
|/ branch: A
| tag: p1
| user: debugbuilddag
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: r1
|
o changeset: 0:2ab8003a1750
branch: A
tag: base
user: debugbuilddag
date: Thu Jan 01 00:00:00 1970 +0000
summary: r0
$ hg bundle -R branchmap-testing1 --base 1 bundle.hg --rev 'head()'
2 changesets found
Unbundling revision should warm the served cache
$ hg clone branchmap-testing1 --rev 1 branchmap-update-01
adding changesets
adding manifests
adding file changes
added 2 changesets with 0 changes to 0 files
new changesets 2ab8003a1750:99ba08759bc7
updating to branch A
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
#if v3
$ cat branchmap-update-01/.hg/cache/branch3-base
tip-node=99ba08759bc7f6fdbe5304e83d0387f35c082479 tip-rev=1 topo-mode=pure
A
#else
$ cat branchmap-update-01/.hg/cache/branch2-base
99ba08759bc7f6fdbe5304e83d0387f35c082479 1
99ba08759bc7f6fdbe5304e83d0387f35c082479 o A
#endif
$ hg -R branchmap-update-01 unbundle bundle.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 0 changes to 0 files
new changesets a3b807b3ff0b:71ca9a6d524e (2 drafts)
(run 'hg update' to get a working copy)
#if v3
$ cat branchmap-update-01/.hg/cache/branch3-served
tip-node=71ca9a6d524ed3c2a215119b2086ac3b8c4c8286 tip-rev=3 topo-mode=pure
A
#else
$ cat branchmap-update-01/.hg/cache/branch2-served
71ca9a6d524ed3c2a215119b2086ac3b8c4c8286 3
71ca9a6d524ed3c2a215119b2086ac3b8c4c8286 o A
#endif
aborted Unbundle should not update the on disk cache
$ cat >> simplehook.py << EOF
> import sys
> from mercurial import node
> from mercurial import branchmap
> def hook(ui, repo, *args, **kwargs):
> s = repo.filtered(b"served")
> s.branchmap()
> return 1
> EOF
$ hg clone branchmap-testing1 --rev 1 branchmap-update-02
adding changesets
adding manifests
adding file changes
added 2 changesets with 0 changes to 0 files
new changesets 2ab8003a1750:99ba08759bc7
updating to branch A
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
#if v3
$ cat branchmap-update-02/.hg/cache/branch3-base
tip-node=99ba08759bc7f6fdbe5304e83d0387f35c082479 tip-rev=1 topo-mode=pure
A
#else
$ cat branchmap-update-02/.hg/cache/branch2-base
99ba08759bc7f6fdbe5304e83d0387f35c082479 1
99ba08759bc7f6fdbe5304e83d0387f35c082479 o A
#endif
$ hg -R branchmap-update-02 unbundle bundle.hg --config "hooks.pretxnclose=python:$TESTTMP/simplehook.py:hook"
adding changesets
adding manifests
adding file changes
transaction abort!
rollback completed
abort: pretxnclose hook failed
[40]
#if v3
$ cat branchmap-update-02/.hg/cache/branch3-base
tip-node=99ba08759bc7f6fdbe5304e83d0387f35c082479 tip-rev=1 topo-mode=pure
A
#else
$ cat branchmap-update-02/.hg/cache/branch2-base
99ba08759bc7f6fdbe5304e83d0387f35c082479 1
99ba08759bc7f6fdbe5304e83d0387f35c082479 o A
#endif