view hgext/inotify/linux/__init__.py @ 20444:1478a9ce6790

run-tests: fix typo and print out failing line Instead of stripping the newline and printing the line, only the newline was printed. The output on buildbot will make more sense now.
author Simon Heimberg <simohe@besonet.ch>
date Tue, 11 Feb 2014 01:15:07 +0100
parents 14f3795a5ed7
children
line wrap: on
line source

# __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, or any later version.

'''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:
            fp = open(procfs_path + '/' + name)
            r = int(fp.read())
            fp.close()
            return r
        except OSError:
            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')