hidden: use _domainancestors to compute revs revealed by dynamic blocker
The complexity of computing the revealed changesets is now 'O(revealed)'.
This massively speeds up the computation on large repository. Moving it to the
millisecond range.
Below are timing from two Mozilla repositories with different contents:
1) mozilla repository with:
* 400667 changesets
* 35 hidden changesets (first rev-268334)
* 288 visible drafts
* obsolete working copy (dynamicblockers),
Before:
! visible
! wall 0.030247 comb 0.030000 user 0.030000 sys 0.000000 (best of 100)
After:
! visible
! wall 0.000585 comb 0.000000 user 0.000000 sys 0.000000 (best of 4221)
The timing above include the computation of obsolete changeset:
! obsolete
! wall 0.000396 comb 0.000000 user 0.000000 sys 0.000000 (best of 6816)
So adjusted time give 30ms before versus 0.2ms after. A 150x speedup.
2) mozilla repository with:
* 405645 changesets
* 4312 hidden changesets (first rev-326004)
* 264 visible drafts
* obsolete working copy (dynamicblockers),
Before:
! visible
! wall 0.168658 comb 0.170000 user 0.170000 sys 0.000000 (best of 48)
After
! visible
! wall 0.008612 comb 0.010000 user 0.010000 sys 0.000000 (best of 325)
The timing above include the computation of obsolete changeset:
! obsolete
! wall 0.006408 comb 0.010000 user 0.010000 sys 0.000000 (best of 404)
So adjusted time give 160ms before versus 2ms after. A 75x speedup.
#require chg
$ cp $HGRCPATH $HGRCPATH.orig
init repo
$ chg init foo
$ cd foo
ill-formed config
$ chg status
$ echo '=brokenconfig' >> $HGRCPATH
$ chg status
hg: parse error at * (glob)
[255]
$ cp $HGRCPATH.orig $HGRCPATH
long socket path
$ sockpath=$TESTTMP/this/path/should/be/longer/than/one-hundred-and-seven/characters/where/107/is/the/typical/size/limit/of/unix-domain-socket
$ mkdir -p $sockpath
$ bakchgsockname=$CHGSOCKNAME
$ CHGSOCKNAME=$sockpath/server
$ export CHGSOCKNAME
$ chg root
$TESTTMP/foo
$ rm -rf $sockpath
$ CHGSOCKNAME=$bakchgsockname
$ export CHGSOCKNAME
$ cd ..
editor
------
$ cat >> pushbuffer.py <<EOF
> def reposetup(ui, repo):
> repo.ui.pushbuffer(subproc=True)
> EOF
$ chg init editor
$ cd editor
by default, system() should be redirected to the client:
$ touch foo
$ CHGDEBUG= HGEDITOR=cat chg ci -Am channeled --edit 2>&1 \
> | egrep "HG:|run 'cat"
chg: debug: run 'cat "*"' at '$TESTTMP/editor' (glob)
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: added foo
but no redirection should be made if output is captured:
$ touch bar
$ CHGDEBUG= HGEDITOR=cat chg ci -Am bufferred --edit \
> --config extensions.pushbuffer="$TESTTMP/pushbuffer.py" 2>&1 \
> | egrep "HG:|run 'cat"
[1]
check that commit commands succeeded:
$ hg log -T '{rev}:{desc}\n'
1:bufferred
0:channeled
$ cd ..
pager
-----
$ cat >> fakepager.py <<EOF
> import sys
> for line in sys.stdin:
> sys.stdout.write('paged! %r\n' % line)
> EOF
enable pager extension globally, but spawns the master server with no tty:
$ chg init pager
$ cd pager
$ cat >> $HGRCPATH <<EOF
> [extensions]
> pager =
> [pager]
> pager = python $TESTTMP/fakepager.py
> EOF
$ chg version > /dev/null
$ touch foo
$ chg ci -qAm foo
pager should be enabled if the attached client has a tty:
$ chg log -l1 -q --config ui.formatted=True
paged! '0:1f7b0de80e11\n'
$ chg log -l1 -q --config ui.formatted=False
0:1f7b0de80e11
chg waits for pager if runcommand raises
$ cat > $TESTTMP/crash.py <<EOF
> from mercurial import registrar
> cmdtable = {}
> command = registrar.command(cmdtable)
> @command('crash')
> def pagercrash(ui, repo, *pats, **opts):
> ui.write('going to crash\n')
> raise Exception('.')
> EOF
$ cat > $TESTTMP/fakepager.py <<EOF
> import sys, time
> for line in iter(sys.stdin.readline, ''):
> if 'crash' in line: # only interested in lines containing 'crash'
> # if chg exits when pager is sleeping (incorrectly), the output
> # will be captured by the next test case
> time.sleep(1)
> sys.stdout.write('crash-pager: %s' % line)
> EOF
$ cat >> .hg/hgrc <<EOF
> [extensions]
> crash = $TESTTMP/crash.py
> EOF
$ chg crash --pager=on --config ui.formatted=True 2>/dev/null
crash-pager: going to crash
[255]
$ cd ..
server lifecycle
----------------
chg server should be restarted on code change, and old server will shut down
automatically. In this test, we use the following time parameters:
- "sleep 1" to make mtime different
- "sleep 2" to notice mtime change (polling interval is 1 sec)
set up repository with an extension:
$ chg init extreload
$ cd extreload
$ touch dummyext.py
$ cat <<EOF >> .hg/hgrc
> [extensions]
> dummyext = dummyext.py
> EOF
isolate socket directory for stable result:
$ OLDCHGSOCKNAME=$CHGSOCKNAME
$ mkdir chgsock
$ CHGSOCKNAME=`pwd`/chgsock/server
warm up server:
$ CHGDEBUG= chg log 2>&1 | egrep 'instruction|start'
chg: debug: start cmdserver at $TESTTMP/extreload/chgsock/server.* (glob)
new server should be started if extension modified:
$ sleep 1
$ touch dummyext.py
$ CHGDEBUG= chg log 2>&1 | egrep 'instruction|start'
chg: debug: instruction: unlink $TESTTMP/extreload/chgsock/server-* (glob)
chg: debug: instruction: reconnect
chg: debug: start cmdserver at $TESTTMP/extreload/chgsock/server.* (glob)
old server will shut down, while new server should still be reachable:
$ sleep 2
$ CHGDEBUG= chg log 2>&1 | (egrep 'instruction|start' || true)
socket file should never be unlinked by old server:
(simulates unowned socket by updating mtime, which makes sure server exits
at polling cycle)
$ ls chgsock/server-*
chgsock/server-* (glob)
$ touch chgsock/server-*
$ sleep 2
$ ls chgsock/server-*
chgsock/server-* (glob)
since no server is reachable from socket file, new server should be started:
(this test makes sure that old server shut down automatically)
$ CHGDEBUG= chg log 2>&1 | egrep 'instruction|start'
chg: debug: start cmdserver at $TESTTMP/extreload/chgsock/server.* (glob)
shut down servers and restore environment:
$ rm -R chgsock
$ CHGSOCKNAME=$OLDCHGSOCKNAME
$ cd ..