diff options
| -rw-r--r-- | Makefile | 5 | ||||
| -rw-r--r-- | TODO | 13 | ||||
| -rw-r--r-- | examples/plugins/files | 34 | ||||
| -rw-r--r-- | src/plugins/files.py | 52 |
4 files changed, 89 insertions, 15 deletions
@@ -19,12 +19,13 @@ SRC = __main__ util x PLUGINS = chase clock cpuifo cpuonline cpu df discstats ipaddress \ kmsg leapsec linereader loadavg lunar mem moc network \ pacman snmp snmp6 softirqs solar uname uptime users \ - vmstat weather xdisplay xkb alsa dentrystate inodestate + vmstat weather xdisplay xkb alsa dentrystate inodestate \ + files PLUGIN_EXAMPLES = chase clock cpu cpuinfo cpuonline df discstats \ ipaddress kmsg loadavg lunar mem moc network \ pacman uname uptime users xdisplay xkb slsa \ - dentrystate inodestate + dentrystate inodestate files EXAMPLES = clock mixed moderate plugin-test test xmonad @@ -36,19 +36,6 @@ List of plugins to implement: /proc/net/sockstat6 /proc/net/wireless /sys/class/net/<nic>/duplex (half, full) - /proc/sys/fs/file-nr - This (read-only) file contains three numbers: the number of allocated - file handles (i.e., the number of files presently opened); the number - of free file handles; and the maximum number of file handles (i.e., - the same value as /proc/sys/fs/file-max). 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. Demo plugins: diff --git a/examples/plugins/files b/examples/plugins/files new file mode 100644 index 0000000..56b69fd --- /dev/null +++ b/examples/plugins/files @@ -0,0 +1,34 @@ +# -*- python -*- + +# A xpybar configuration example testing the features of plugins.files + +import time +import threading + +from plugins.files import Files +from plugins.clock import Clock + + +OUTPUT, HEIGHT, YPOS, TOP = 0, 12, 24, True + + +clock = Clock(sync_to = Clock.SECONDS) + +start_ = start +def start(): + start_() + async(lambda : clock.continuous_sync(lambda : bar.invalidate())) + + +def redraw(): + files_ = Files() + + data = [('Files', files_.nr_files), + ('Free', files_.nr_free_files), + ('Max', files_.file_max)] + + text = ' │ '.join('%s: %i' % (text, value) for (text, value) in data) + + bar.clear() + bar.draw_coloured_text(0, 10, 0, 2, text) + 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 <http://www.gnu.org/licenses/>. +''' + + +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 + |