rust-matchers: use the `regex` crate
Instead of falling back to Python when a code path with "ignore" functionality
is reached and `Re2` is not installed, the default compilation (i.e. without
the `with-re2` feature) will use the `regex` crate for all regular expressions
business.
As with the introduction of `Re2` in a previous series, this yields a big
performance boost compared to the Python + C code in `status`, `diff`, `commit`,
`update`, and maybe others.
For now `Re2` looks to be faster at compiling the DFA (1.5ms vs 5ms for
Netbeans' `.hgignore`) and a bit faster in actual use: (123ms vs 137ms for
the parallel traversal of Netbeans' clean repo). I am in talks with the author
of `regex` to see whether that performance difference is a bug, a "won't fix",
or a tuning issue.
The `regex` crate is already one of our dependencies and using this code does
not require any additional work from the end-user than to use the Rust
extensions.
Differential Revision: https://phab.mercurial-scm.org/D8323
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