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
|
/******************************************************************************
* Copyright (C) 2011-2013 Michael Hofmann <mh21@mh21.de> *
* *
* 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, write to the Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
******************************************************************************/
public class DiskProvider : Provider {
private uint64[] lastdata;
private uint64 lasttime;
private static const string[] networkfs = { "smbfs", "nfs", "cifs", "fuse.sshfs" };
public DiskProvider() {
base("disk", {"read", "write"}, "s");
}
private string[] split(string val) {
string[] result = null;
char *last = null;
char *current = (char*)val;
for (; *current != '\0'; current = current + 1) {
if (*current == ' ' || *current == '\n') {
if (last != null) {
result += strndup(last, current - last);
last = null;
}
} else {
if (last == null)
last = current;
}
}
if (last != null)
result += strndup(last, current - last);
return result;
}
public override void update() {
uint64[] newdata = new uint64[3];
uint64 newtime = get_monotonic_time();
try {
// Accounts for io for everything that has an associated device
// TODO: will jump on unmount
Dir directory = Dir.open("/sys/block");
string entry;
while ((entry = directory.read_name()) != null) {
if (!FileUtils.test(@"/sys/block/$entry/device", FileTest.EXISTS))
continue;
string stat;
try {
FileUtils.get_contents(@"/sys/block/$entry/stat", out stat);
} catch (Error e) {
continue;
}
string[] stats = this.split(stat);
if (stats.length < 8)
continue;
newdata[0] += 512 * uint64.parse(stats[2]);
newdata[1] += 512 * uint64.parse(stats[6]);
}
} catch (Error e) {
// Fall back to libgtop if we have no /sys
GTop.MountEntry[] mountentries;
GTop.MountList mountlist;
mountentries = GTop.get_mountlist (out mountlist, false);
for (uint i = 0; i < mountlist.number; ++i) {
// Skip network mounts to prevent hangs if not available and to
// allow suspend (gnome bug #579888)
if (mountentries[i].type in networkfs)
continue;
GTop.FSUsage fsusage;
GTop.get_fsusage(out fsusage, mountentries[i].mountdir);
newdata[0] += fsusage.block_size * fsusage.read;
newdata[1] += fsusage.block_size * fsusage.write;
}
}
if (this.lastdata.length != 0) {
double delta = (newtime - this.lasttime) / 1e6;
this.values[0] = (newdata[0] - this.lastdata[0]) / delta;
this.values[1] = (newdata[1] - this.lastdata[1]) / delta;
}
this.lastdata = newdata;
this.lasttime = newtime;
}
}
|