4 # Copyright (C) 2009 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 """Asynchronous pyinotify implementation"""
28 # pylint: disable-msg=E0611
29 from pyinotify import pyinotify
34 class AsyncNotifier(asyncore.file_dispatcher):
35 """An asyncore dispatcher for inotify events.
38 # pylint: disable-msg=W0622,W0212
39 def __init__(self, watch_manager, default_proc_fun=None, map=None):
40 """Initializes this class.
42 This is a a special asyncore file_dispatcher that actually wraps a
43 pyinotify Notifier, making it asyncronous.
46 if default_proc_fun is None:
47 default_proc_fun = pyinotify.ProcessEvent()
49 self.notifier = pyinotify.Notifier(watch_manager, default_proc_fun)
51 # here we need to steal the file descriptor from the notifier, so we can
52 # use it in the global asyncore select, and avoid calling the
53 # check_events() function of the notifier (which doesn't allow us to select
54 # together with other file descriptors)
55 self.fd = self.notifier._fd
56 asyncore.file_dispatcher.__init__(self, self.fd, map)
58 def handle_read(self):
59 self.notifier.read_events()
60 self.notifier.process_events()