Mercurial > hg
diff hgext/inotify/linux/__init__.py @ 6239:39cfcef4f463
Add inotify extension
author | Bryan O'Sullivan <bos@serpentine.com> |
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date | Wed, 12 Mar 2008 15:30:11 -0700 |
parents | |
children | 553aa0cbeab6 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hgext/inotify/linux/__init__.py Wed Mar 12 15:30:11 2008 -0700 @@ -0,0 +1,41 @@ +# __init__.py - low-level interfaces to the Linux inotify subsystem + +# Copyright 2006 Bryan O'Sullivan <bos@serpentine.com> + +# This library is free software; you can redistribute it and/or modify +# it under the terms of version 2.1 of the GNU Lesser General Public +# License, incorporated herein by reference. + +'''Low-level interface to the Linux inotify subsystem. + +The inotify subsystem provides an efficient mechanism for file status +monitoring and change notification. + +This package provides the low-level inotify system call interface and +associated constants and helper functions. + +For a higher-level interface that remains highly efficient, use the +inotify.watcher package.''' + +__author__ = "Bryan O'Sullivan <bos@serpentine.com>" + +from _inotify import * + +procfs_path = '/proc/sys/fs/inotify' + +def _read_procfs_value(name): + def read_value(): + try: + return int(open(procfs_path + '/' + name).read()) + except OSError, err: + return None + + read_value.__doc__ = '''Return the value of the %s setting from /proc. + + If inotify is not enabled on this system, return None.''' % name + + return read_value + +max_queued_events = _read_procfs_value('max_queued_events') +max_user_instances = _read_procfs_value('max_user_instances') +max_user_watches = _read_procfs_value('max_user_watches')