add dentrystate

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/src/plugins/dentrystate.py b/src/plugins/dentrystate.py
new file mode 100644
index 0000000..6ef5dc7
--- /dev/null
+++ b/src/plugins/dentrystate.py
@@ -0,0 +1,44 @@
+# -*- 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 DentryState:
+    '''
+    Data from /proc/sys/fs/dentry-state
+    
+    Information about the status of the directory cache (dcache)
+    
+    @variable  nr_dentry:int   Number of allocated directory entries
+    @variable  nr_unused:int   Number of unused directory entries
+    @variable  age_limit:int   Age limit in seconds
+    @variable  want_pages:int  Pages requested by the system
+    '''
+    
+    
+    def __init__(self):
+        '''
+        Constructor
+        '''
+        state = None
+        with open('/proc/sys/fs/dentry-state', '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_dentry, self.nr_unused, self.age_limit, self.want_pages, _dummy1, _dummy_2) = state
+