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
|
/* 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/error.h>
#include <glibtop/proctime.h>
#include <glibtop/uptime.h>
#include "glibtop_private.h"
static const unsigned long _glibtop_sysdeps_proc_time =
(1L << GLIBTOP_PROC_TIME_UTIME) + (1L << GLIBTOP_PROC_TIME_CUTIME) +
(1L << GLIBTOP_PROC_TIME_RTIME) +
(1L << GLIBTOP_PROC_TIME_STIME) + (1L << GLIBTOP_PROC_TIME_CSTIME) +
(1L << GLIBTOP_PROC_TIME_FREQUENCY) + (1L << GLIBTOP_PROC_TIME_TIMEOUT) +
(1L << GLIBTOP_PROC_TIME_IT_REAL_VALUE) + (1L << GLIBTOP_PROC_TIME_START_TIME);
static const unsigned long _glibtop_sysdeps_proc_time_smp =
(1L << GLIBTOP_PROC_TIME_XCPU_UTIME) + (1L << GLIBTOP_PROC_TIME_XCPU_STIME);
/* Init function. */
void
_glibtop_init_proc_time_s (glibtop *server)
{
server->sysdeps.proc_time = _glibtop_sysdeps_proc_time;
if (server->ncpu)
server->sysdeps.proc_time |= _glibtop_sysdeps_proc_time_smp;
}
/* Provides detailed information about a process. */
void
glibtop_get_proc_time_s (glibtop *server, glibtop_proc_time *buf, pid_t pid)
{
char buffer [BUFSIZ], *p;
int i;
memset (buf, 0, sizeof (glibtop_proc_time));
if (proc_stat_to_buffer (buffer, pid))
return;
p = proc_stat_after_cmd (buffer);
if (!p) return;
p = skip_multiple_token (p, 11);
/* clock_t (1/100 s) */
buf->utime = strtoull (p, &p, 0);
buf->stime = strtoull (p, &p, 0);
buf->rtime = buf->utime + buf->stime;
buf->cutime = strtoull (p, &p, 0);
buf->cstime = strtoull (p, &p, 0);
p = skip_multiple_token (p, 3);
/* timeout is 0 on 2.4 and "thread_number" on 2.6
lets skip it (using previous skip_multiple_token)
buf->timeout = strtoull (p, &p, 0);
*/
buf->it_real_value = strtoull (p, &p, 0);
/* seconds since epoch */
{
/*
See libgtop documentation.
#ifdef __KERNEL__
...
*
* Have the 32 bit jiffies value wrap 5 minutes after boot
* so jiffies wrap bugs show up earlier.
*
#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
...
#endif
start_time may be incremented by INITIAL_JIFFIES, so start_time
may be not be exact. You may also get wrong start_time if your
system clock is not synchronised with you hardware clock.
'man hwclock'
*/
buf->start_time = get_boot_time(server) + strtoull (p, &p, 0) / 100;
}
buf->frequency = 100;
buf->flags = _glibtop_sysdeps_proc_time;
if (!server->ncpu)
return;
/* FIXME: doesn't work with 2.6 */
if (proc_file_to_buffer (buffer, "/proc/%d/cpu", pid))
return;
p = skip_multiple_token (p, 3);
for (i = 0; i <= server->ncpu; i++) {
if (!check_cpu_line_warn(server, p + 1, i))
break;
p = skip_token(p);
buf->xcpu_utime [i] = strtoull (p, &p, 0);
buf->xcpu_stime [i] = strtoull (p, &p, 0);
}
buf->flags |= _glibtop_sysdeps_proc_time_smp;
}
|
