subrepo: use vfs.readdir instead of os.listdir to avoid expensive stat calls
"kind" information given from "vfs.readdir()" makes expensive stat
calls "os.path.isdir()" and "os.path.islink()" useless.
--- a/mercurial/subrepo.py Fri Apr 10 08:05:50 2015 +0300
+++ b/mercurial/subrepo.py Sat Apr 11 00:47:09 2015 +0900
@@ -1632,11 +1632,11 @@
# local-only history
self.ui.note(_('removing subrepo %s\n') % self._relpath)
self._gitcommand(['config', 'core.bare', 'true'])
- for f in os.listdir(self._abspath):
+ for f, kind in self.wvfs.readdir():
if f == '.git':
continue
path = os.path.join(self._abspath, f)
- if os.path.isdir(path) and not os.path.islink(path):
+ if kind == stat.S_IFDIR:
shutil.rmtree(path)
else:
os.remove(path)