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.
#require no-chg
Test basic extension support
$ cat > foobar.py <<EOF
> import os
> from mercurial import commands, registrar
> cmdtable = {}
> command = registrar.command(cmdtable)
> configtable = {}
> configitem = registrar.configitem(configtable)
> configitem(b'tests', b'foo', default=b"Foo")
> def uisetup(ui):
> ui.debug(b"uisetup called [debug]\\n")
> ui.write(b"uisetup called\\n")
> ui.status(b"uisetup called [status]\\n")
> ui.flush()
> def reposetup(ui, repo):
> ui.write(b"reposetup called for %s\\n" % os.path.basename(repo.root))
> ui.write(b"ui %s= repo.ui\\n" % (ui == repo.ui and b"=" or b"!"))
> ui.flush()
> @command(b'foo', [], b'hg foo')
> def foo(ui, *args, **kwargs):
> foo = ui.config(b'tests', b'foo')
> ui.write(foo)
> ui.write(b"\\n")
> @command(b'bar', [], b'hg bar', norepo=True)
> def bar(ui, *args, **kwargs):
> ui.write(b"Bar\\n")
> EOF
$ abspath=`pwd`/foobar.py
$ mkdir barfoo
$ cp foobar.py barfoo/__init__.py
$ barfoopath=`pwd`/barfoo
$ hg init a
$ cd a
$ echo foo > file
$ hg add file
$ hg commit -m 'add file'
$ echo '[extensions]' >> $HGRCPATH
$ echo "foobar = $abspath" >> $HGRCPATH
$ filterlog () {
> sed -e 's!^[0-9/]* [0-9:]* ([0-9]*)>!YYYY/MM/DD HH:MM:SS (PID)>!'
> }
Test extension setup timings
$ hg foo --traceback --config devel.debug.extensions=yes --debug 2>&1 | filterlog
YYYY/MM/DD HH:MM:SS (PID)> loading extensions
YYYY/MM/DD HH:MM:SS (PID)> - processing 1 entries
YYYY/MM/DD HH:MM:SS (PID)> - loading extension: foobar
YYYY/MM/DD HH:MM:SS (PID)> > foobar extension loaded in * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - validating extension tables: foobar
YYYY/MM/DD HH:MM:SS (PID)> - invoking registered callbacks: foobar
YYYY/MM/DD HH:MM:SS (PID)> > callbacks completed in * (glob)
YYYY/MM/DD HH:MM:SS (PID)> > loaded 1 extensions, total time * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - loading configtable attributes
YYYY/MM/DD HH:MM:SS (PID)> - executing uisetup hooks
YYYY/MM/DD HH:MM:SS (PID)> - running uisetup for foobar
uisetup called [debug]
uisetup called
uisetup called [status]
YYYY/MM/DD HH:MM:SS (PID)> > uisetup for foobar took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> > all uisetup took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - executing extsetup hooks
YYYY/MM/DD HH:MM:SS (PID)> - running extsetup for foobar
YYYY/MM/DD HH:MM:SS (PID)> > extsetup for foobar took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> > all extsetup took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - executing remaining aftercallbacks
YYYY/MM/DD HH:MM:SS (PID)> > remaining aftercallbacks completed in * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - loading extension registration objects
YYYY/MM/DD HH:MM:SS (PID)> > extension registration object loading took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> > extension foobar take a total of * to load (glob)
YYYY/MM/DD HH:MM:SS (PID)> extension loading complete
YYYY/MM/DD HH:MM:SS (PID)> loading additional extensions
YYYY/MM/DD HH:MM:SS (PID)> - processing 1 entries
YYYY/MM/DD HH:MM:SS (PID)> > loaded 0 extensions, total time * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - loading configtable attributes
YYYY/MM/DD HH:MM:SS (PID)> - executing uisetup hooks
YYYY/MM/DD HH:MM:SS (PID)> > all uisetup took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - executing extsetup hooks
YYYY/MM/DD HH:MM:SS (PID)> > all extsetup took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - executing remaining aftercallbacks
YYYY/MM/DD HH:MM:SS (PID)> > remaining aftercallbacks completed in * (glob)
YYYY/MM/DD HH:MM:SS (PID)> - loading extension registration objects
YYYY/MM/DD HH:MM:SS (PID)> > extension registration object loading took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> extension loading complete
YYYY/MM/DD HH:MM:SS (PID)> - executing reposetup hooks
YYYY/MM/DD HH:MM:SS (PID)> - running reposetup for foobar
reposetup called for a
ui == repo.ui
YYYY/MM/DD HH:MM:SS (PID)> > reposetup for foobar took * (glob)
YYYY/MM/DD HH:MM:SS (PID)> > all reposetup took * (glob)
Foo
$ cd ..
$ echo 'foobar = !' >> $HGRCPATH