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
|
/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
LibGTop 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.
LibGTop 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 LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop/error.h>
#include <glibtop/cpu.h>
#include "glibtop_private.h"
static const unsigned long _glibtop_sysdeps_cpu =
(1L << GLIBTOP_CPU_TOTAL) + (1L << GLIBTOP_CPU_USER) +
(1L << GLIBTOP_CPU_NICE) + (1L << GLIBTOP_CPU_SYS) +
(1L << GLIBTOP_CPU_IDLE) + (1L << GLIBTOP_CPU_FREQUENCY);
static const unsigned long _glibtop_sysdeps_cpu_smp =
(1L << GLIBTOP_XCPU_TOTAL) + (1L << GLIBTOP_XCPU_USER) +
(1L << GLIBTOP_XCPU_NICE) + (1L << GLIBTOP_XCPU_SYS) +
(1L << GLIBTOP_XCPU_IDLE);
static const unsigned long _glibtop_sysdeps_cpu_2_6 =
(1L << GLIBTOP_CPU_IOWAIT) + (1L << GLIBTOP_CPU_IRQ) +
(1L << GLIBTOP_CPU_SOFTIRQ);
static const unsigned long _glibtop_sysdeps_cpu_smp_2_6 =
(1L << GLIBTOP_XCPU_IOWAIT) + (1L << GLIBTOP_XCPU_IRQ) +
(1L << GLIBTOP_XCPU_SOFTIRQ);
/* Init function. */
void
_glibtop_init_cpu_s (glibtop *server)
{
server->sysdeps.cpu = _glibtop_sysdeps_cpu;
if (server->ncpu)
server->sysdeps.cpu |= _glibtop_sysdeps_cpu_smp;
if(server->os_version_code >= LINUX_VERSION_CODE(2, 6, 0))
{
server->sysdeps.cpu |= _glibtop_sysdeps_cpu_2_6;
if (server->ncpu)
server->sysdeps.cpu |= _glibtop_sysdeps_cpu_smp_2_6;
}
}
/* Provides information about cpu usage. */
#define FILENAME "/proc/stat"
#define STAT_BUFSIZ 81920
void
glibtop_get_cpu_s (glibtop *server, glibtop_cpu *buf)
{
char buffer [STAT_BUFSIZ], *p;
int i;
memset (buf, 0, sizeof (glibtop_cpu));
file_to_buffer(server, buffer, sizeof buffer, FILENAME);
/*
* GLOBAL
*/
p = skip_token (buffer); /* "cpu" */
buf->user = strtoull (p, &p, 0);
buf->nice = strtoull (p, &p, 0);
buf->sys = strtoull (p, &p, 0);
buf->idle = strtoull (p, &p, 0);
buf->total = buf->user + buf->nice + buf->sys + buf->idle;
/* 2.6 kernel */
if(server->os_version_code >= LINUX_VERSION_CODE(2, 6, 0))
{
buf->iowait = strtoull(p, &p, 0);
buf->irq = strtoull(p, &p, 0);
buf->softirq = strtoull(p, &p, 0);
buf->total += buf->iowait + buf->irq + buf->softirq;
}
buf->frequency = 100;
buf->flags = _glibtop_sysdeps_cpu;
/*
* PER CPU
*/
for (i = 0; i <= server->ncpu; i++) {
p = skip_line(p); /* move to ^ */
if (!check_cpu_line_warn(server, p, i))
break;
p = skip_token(p); /* "cpuN" */
buf->xcpu_user [i] = strtoull (p, &p, 0);
buf->xcpu_nice [i] = strtoull (p, &p, 0);
buf->xcpu_sys [i] = strtoull (p, &p, 0);
buf->xcpu_idle [i] = strtoull (p, &p, 0);
buf->xcpu_total[i] = buf->xcpu_user [i] \
+ buf->xcpu_nice [i] \
+ buf->xcpu_sys [i] \
+ buf->xcpu_idle [i];
/* 2.6 kernel */
if(server->os_version_code >= LINUX_VERSION_CODE(2, 6, 0))
{
buf->xcpu_iowait [i] = strtoull(p, &p, 0);
buf->xcpu_irq [i] = strtoull(p, &p, 0);
buf->xcpu_softirq [i] = strtoull(p, &p, 0);
buf->xcpu_total [i] += buf->xcpu_iowait [i] \
+ buf->xcpu_irq [i] \
+ buf->xcpu_softirq [i];
}
}
if(server->ncpu) /* ok, that's a real SMP */
buf->flags |= _glibtop_sysdeps_cpu_smp;
if(server->os_version_code >= LINUX_VERSION_CODE(2, 6, 0))
{
buf->flags |= _glibtop_sysdeps_cpu_2_6;
if(server->ncpu) /* ok, that's a real SMP */
buf->flags |= _glibtop_sysdeps_cpu_smp_2_6;
}
}
|
