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
|
/* 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/cpu.h>
#include <glibtop/open.h>
#include <glibtop/error.h>
#include "glibtop_private.h"
/* =====================================================
* Linux kernel version information for procps utilities
* Copyright (c) 1996 Charles Blake <cblake@bbn.com>
*/
#include <sys/utsname.h>
static void set_linux_version(glibtop *server)
{
struct utsname uts;
unsigned x = 0, y = 0, z = 0; /* cleared in case sscanf() < 3 */
if (uname(&uts) == -1) /* failure most likely implies impending death */
glibtop_error_r(server, "uname() failed");
if (sscanf(uts.release, "%u.%u.%u", &x, &y, &z) < 3)
glibtop_warn_r(server,
"Non-standard uts for running kernel:\n"
"release %s=%u.%u.%u gives version code %d\n",
uts.release, x, y, z, LINUX_VERSION_CODE(x,y,z));
if (LINUX_VERSION_CODE(x, y, z) >= LINUX_VERSION_CODE(2, 6, 0)
&& !has_sysfs())
glibtop_warn_r(server,
"You're running a 2.6 kernel without /sys."
"You should mount it.");
server->os_version_code = LINUX_VERSION_CODE(x, y, z);
}
/* ======================================================= */
/* Opens pipe to gtop server. Returns 0 on success and -1 on error. */
#define FILENAME "/proc/stat"
void
glibtop_open_s (glibtop *server, const char *program_name,
const unsigned long features,
const unsigned flags)
{
char buffer [BUFSIZ], *p = buffer;
server->name = program_name;
set_linux_version(server);
file_to_buffer(server, buffer, FILENAME);
p = skip_line(p); /* cpu */
for (server->real_ncpu = 0; /* nop */; server->real_ncpu++) {
if (!check_cpu_line(server, p, server->real_ncpu)) {
server->real_ncpu--;
break;
}
p = skip_line(p);
}
server->ncpu = MIN(GLIBTOP_NCPU - 1, server->real_ncpu);
if (server->real_ncpu != server->ncpu) {
glibtop_warn_r(server,
"This machine has %d CPUs, "
"%d are being monitored.",
server->real_ncpu + 1,
server->ncpu + 1);
}
}
|
