revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Transitioning to Mercurial versions with revision branch cache could be slow as
long as all operations were readonly (revset queries) and the cache would be
populated but not written back.
Instead, fall back to using the consistently slow path when readonly and the
cache doesn't exist yet. That avoids the overhead of populating the cache
without writing it back.
If not readonly, it will still populate all missing entries initially. That
avoids repeated writing of the cache file with small updates, and it also makes
sure a fully populated cache available for the readonly operations.
#require serve
$ hg init test
$ cd test
$ for i in 0 1 2 3 4 5 6 7 8; do
> echo $i >> foo
> hg commit -A -m $i
> done
adding foo
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 9 changesets, 9 total revisions
$ hg serve -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid >> $DAEMON_PIDS
$ cd ..
$ hg init new
http incoming
$ hg -R new incoming http://localhost:$HGPORT/
comparing with http://localhost:$HGPORT/
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
changeset: 2:d9f42cd1a1ec
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
changeset: 3:376476025137
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3
changeset: 4:70d7eb252d49
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 4
changeset: 5:ad284ee3b5ee
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 5
changeset: 6:e9229f2de384
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 6
changeset: 7:d152815bb8db
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 7
changeset: 8:e4feb4ac9035
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 8
$ hg -R new incoming -r 4 http://localhost:$HGPORT/
comparing with http://localhost:$HGPORT/
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
changeset: 2:d9f42cd1a1ec
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
changeset: 3:376476025137
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3
changeset: 4:70d7eb252d49
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 4
local incoming
$ hg -R new incoming test
comparing with test
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
changeset: 2:d9f42cd1a1ec
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
changeset: 3:376476025137
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3
changeset: 4:70d7eb252d49
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 4
changeset: 5:ad284ee3b5ee
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 5
changeset: 6:e9229f2de384
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 6
changeset: 7:d152815bb8db
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 7
changeset: 8:e4feb4ac9035
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 8
$ hg -R new incoming -r 4 test
comparing with test
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
changeset: 2:d9f42cd1a1ec
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
changeset: 3:376476025137
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3
changeset: 4:70d7eb252d49
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 4
limit to 2 changesets
$ hg -R new incoming -l 2 test
comparing with test
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
limit to 2 changesets, test with -p --git
$ hg -R new incoming -l 2 -p --git test
comparing with test
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
diff --git a/foo b/foo
new file mode 100644
--- /dev/null
+++ b/foo
@@ -0,0 +1,1 @@
+0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
diff --git a/foo b/foo
--- a/foo
+++ b/foo
@@ -1,1 +1,2 @@
0
+1
test with --bundle
$ hg -R new incoming --bundle test.hg http://localhost:$HGPORT/
comparing with http://localhost:$HGPORT/
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
changeset: 2:d9f42cd1a1ec
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
changeset: 3:376476025137
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3
changeset: 4:70d7eb252d49
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 4
changeset: 5:ad284ee3b5ee
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 5
changeset: 6:e9229f2de384
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 6
changeset: 7:d152815bb8db
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 7
changeset: 8:e4feb4ac9035
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 8
$ hg -R new incoming --bundle test2.hg test
comparing with test
changeset: 0:00a43fa82f62
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
changeset: 1:5460a410df01
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1
changeset: 2:d9f42cd1a1ec
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
changeset: 3:376476025137
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3
changeset: 4:70d7eb252d49
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 4
changeset: 5:ad284ee3b5ee
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 5
changeset: 6:e9229f2de384
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 6
changeset: 7:d152815bb8db
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 7
changeset: 8:e4feb4ac9035
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 8
test the resulting bundles
$ hg init temp
$ hg init temp2
$ hg -R temp unbundle test.hg
adding changesets
adding manifests
adding file changes
added 9 changesets with 9 changes to 1 files
(run 'hg update' to get a working copy)
$ hg -R temp2 unbundle test2.hg
adding changesets
adding manifests
adding file changes
added 9 changesets with 9 changes to 1 files
(run 'hg update' to get a working copy)
$ hg -R temp tip
changeset: 8:e4feb4ac9035
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 8
$ hg -R temp2 tip
changeset: 8:e4feb4ac9035
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 8
$ rm -r temp temp2 new
test outgoing
$ hg clone test test-dev
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd test-dev
$ for i in 9 10 11 12 13; do
> echo $i >> foo
> hg commit -A -m $i
> done
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 14 changesets, 14 total revisions
$ cd ..
$ hg -R test-dev outgoing test
comparing with test
searching for changes
changeset: 9:d89d4abea5bc
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 9
changeset: 10:820095aa7158
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 10
changeset: 11:09ede2f3a638
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 11
changeset: 12:e576b1bed305
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 12
changeset: 13:96bbff09a7cc
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 13
test outgoing with secret changesets
$ hg -R test-dev phase --force --secret 9
$ hg -R test-dev outgoing test
comparing with test
searching for changes
no changes found (ignored 5 secret changesets)
[1]
$ hg -R test-dev phase --draft -r 'head()'
limit to 3 changesets
$ hg -R test-dev outgoing -l 3 test
comparing with test
searching for changes
changeset: 9:d89d4abea5bc
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 9
changeset: 10:820095aa7158
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 10
changeset: 11:09ede2f3a638
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 11
$ hg -R test-dev outgoing http://localhost:$HGPORT/
comparing with http://localhost:$HGPORT/
searching for changes
changeset: 9:d89d4abea5bc
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 9
changeset: 10:820095aa7158
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 10
changeset: 11:09ede2f3a638
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 11
changeset: 12:e576b1bed305
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 12
changeset: 13:96bbff09a7cc
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 13
$ hg -R test-dev outgoing -r 11 http://localhost:$HGPORT/
comparing with http://localhost:$HGPORT/
searching for changes
changeset: 9:d89d4abea5bc
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 9
changeset: 10:820095aa7158
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 10
changeset: 11:09ede2f3a638
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 11
incoming from empty remote repository
$ hg init r1
$ hg init r2
$ echo a > r1/foo
$ hg -R r1 ci -Ama
adding foo
$ hg -R r1 incoming r2 --bundle x.hg
comparing with r2
searching for changes
no changes found
[1]