From 0d56006f78ec66b231b16e20d1466dc29391221c Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 20 Jun 2014 16:58:39 +0200 Subject: add files MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/plugins/files.py | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/plugins/files.py (limited to 'src/plugins') diff --git a/src/plugins/files.py b/src/plugins/files.py new file mode 100644 index 0000000..a1d5638 --- /dev/null +++ b/src/plugins/files.py @@ -0,0 +1,52 @@ +# -*- python -*- +''' +xpybar – xmobar replacement written in python +Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see . +''' + + +class Files: + ''' + Data from /proc/sys/fs/file-nr + + @variable nr_files:int The number of allocated file handles, i.e., + the number of files presently opened + @variable nr_free_files:int The number of free file handles + @variable file_max:int The maximum number of file handles + + If the number of allocated file handles is close to the maximum, + you should consider increasing the maximum. Before Linux 2.6, the + kernel allocated file handles dynamically, but it didn't free them + again. Instead the free file handles were kept in a list for + reallocation; the "free file handles" value indicates the size of + that list. A large number of free file handles indicates that there + was a past peak in the usage of open file handles. Since Linux 2.6, + the kernel does deallocate freed file handles, and the "free file + handles" value is always zero. + ''' + + + def __init__(self): + ''' + Constructor + ''' + state = None + with open('/proc/sys/fs/file-nr', 'rb') as file: + state = file.read() + state = state.decode('utf-8', 'replace').replace('\t', ' ') + state = [int(field) for field in state.split(' ') if not field == ''] + (self.nr_files, self.nr_free_files, self.file_max) = state + -- cgit v1.2.3-70-g09d2