1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
#!/usr/bin/env python
# Copyright (C) 2007, Eduardo Silva (edsiper@gmail.com).
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import os
import sys
import gtk
import string
import gobject
import drwarea
class CPU_Usage:
CPU_HZ = 0
last_jiffies = 0
times = 0
def __init__(self):
self.CPU_hz = os.sysconf(2)
def _get_CPU_data(self):
# Uptime info
stat_file = "/proc/stat"
try:
infile = file(stat_file, "r")
except:
print "Error trying uptime file"
return -1
stat_line = infile.readline()
cpu_info = string.split(stat_line, ' ')
infile.close()
return cpu_info
def _get_CPU_usage(self):
cpu_info = self._get_CPU_data()
used_jiffies = (int(cpu_info[2]) + int(cpu_info[3]) + int(cpu_info[4]))
if self.times ==0:
self.last_jiffies = used_jiffies
self.times +=1
return True
new_ujiffies = (used_jiffies - self.last_jiffies)
new_ajiffies = ((self.frequency/1000) * self.CPU_hz)
if new_ajiffies <= 0:
pcpu = 0.0
else:
pcpu = ((new_ujiffies*100)/new_ajiffies)
if pcpu >100:
pcpu = 100
self.times +=1
self.last_jiffies = used_jiffies
return pcpu
class XO_CPU(gtk.Frame):
context = None
frequency_timer = 1
graph_offset = 7
def __init__(self):
gtk.Frame.__init__(self, 'System CPU Usage')
self.drw_width = gtk.gdk.screen_width() * 90 / 100
self.drw_height = gtk.gdk.screen_height() * 20 / 100
self.set_size_request(self.drw_width, self.drw_height + 60)
self.set_border_width(10)
self.y_cpu = self.drw_height - self.graph_offset
self._cpu = 0
self._cpu_buffer = []
self._drawingarea = gtk.DrawingArea()
self._drawingarea.set_size_request(self.drw_width, self.drw_height)
self._drawingarea.connect("expose-event", self.do_expose)
self.dat = drwarea.Drawing_Area_Tools(self._drawingarea)
fixed = gtk.Fixed();
fixed.set_border_width(10)
fixed.add(self._drawingarea)
self.add(fixed)
DRW_CPU = CPU_Usage()
DRW_CPU.frequency = 1000 # 1 Second
gobject.timeout_add(DRW_CPU.frequency, self._update_cpu_usage, DRW_CPU)
def _update_cpu_usage(self, DRW_CPU):
if ((self.frequency_timer + 1)*self.graph_offset) >= (self.drw_width - self.graph_offset):
self.frequency_timer = 1
self._cpu_buffer = []
self._cpu = DRW_CPU._get_CPU_usage()
self._cpu_buffer.append(self._cpu)
self._updated = True
self._drawingarea.queue_draw()
self.frequency_timer += 1
return True
def _get_y_cpu(self, pcpu):
height = (self.dat.range_y['to']) - (self.dat.range_y['from'])
# Get percent of cpu usage
y_value = (height - ((pcpu*height)/100) + 4)
return int(y_value)
def do_expose(self, widget, event):
context = widget.window.cairo_create()
context.rectangle(0, 0, self.dat.width - 1, self.dat.height - 1)
#context.clip()
context.set_source_rgb (0,0,0)
context.fill_preserve()
# Drawing horizontal and vertical border lines
self.dat.draw_border_lines(context)
# Drawing grid
line_margin = self.dat.margin
context.set_source_rgb(1, 1, 1)
context.set_line_width(1)
self.dat.draw_grid(context, line_margin + 1, line_margin + 1, self.dat.width - line_margin - 2, self.dat.height - line_margin - 2)
context.stroke()
self._draw_buffer(widget, context)
cpu_label = str(round(self._cpu, 4))
self.set_label('System CPU Usage: ' + cpu_label + ' %')
self._updated = False
return False
def _draw_buffer(self, drwarea, context):
freq = 1 # Frequency timer
last_y = self.drw_height - self.graph_offset
for pcpu in self._cpu_buffer:
from_x = freq * self.graph_offset
from_y = last_y
freq+=1
to_x = freq * self.graph_offset
last_y = to_y = self._get_y_cpu(pcpu)
# Context properties
context.set_line_width(2)
context.set_source_rgb(0,1,0)
self.dat.draw_line(context, from_x, from_y, to_x, to_y)
context.stroke()
|
