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
|
/* $Id$ */
/* 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 <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/procmem.h>
static const unsigned long _glibtop_sysdeps_proc_mem =
(1 << GLIBTOP_PROC_MEM_VSIZE) + (1 << GLIBTOP_PROC_MEM_RSS) +
(1 << GLIBTOP_PROC_MEM_RSS_RLIM);
static const unsigned long _glibtop_sysdeps_proc_mem_statm =
(1 << GLIBTOP_PROC_MEM_SIZE) + (1 << GLIBTOP_PROC_MEM_RESIDENT) +
(1 << GLIBTOP_PROC_MEM_SHARE);
#ifndef LOG1024
#define LOG1024 10
#endif
/* these are for getting the memory statistics */
static int pageshift; /* log base 2 of the pagesize */
/* define pagetok in terms of pageshift */
#define pagetok(size) ((size) << pageshift)
/* Init function. */
void
glibtop_init_proc_mem_s (glibtop *server)
{
register int pagesize;
server->sysdeps.proc_mem = _glibtop_sysdeps_proc_mem |
_glibtop_sysdeps_proc_mem_statm;
/* get the page size with "getpagesize" and calculate pageshift
* from it */
pagesize = getpagesize ();
pageshift = 0;
while (pagesize > 1) {
pageshift++;
pagesize >>= 1;
}
}
/* Provides detailed information about a process. */
void
glibtop_get_proc_mem_s (glibtop *server, glibtop_proc_mem *buf, pid_t pid)
{
char buffer [BUFSIZ], *p;
glibtop_init_s (&server, GLIBTOP_SYSDEPS_MEM, 0);
memset (buf, 0, sizeof (glibtop_proc_mem));
if (proc_stat_to_buffer (buffer, pid))
return;
p = proc_stat_after_cmd (buffer);
if (!p) return;
p = skip_multiple_token (p, 20);
buf->vsize = strtoul (p, &p, 0);
buf->rss = strtoul (p, &p, 0);
buf->rss_rlim = strtoul (p, &p, 0);
buf->flags = _glibtop_sysdeps_proc_mem;
if (proc_statm_to_buffer (buffer, pid))
return;
buf->size = strtoul (buffer, &p, 0);
buf->resident = strtoul (p, &p, 0);
buf->share = strtoul (p, &p, 0);
buf->size <<= pageshift;
buf->resident <<= pageshift;
buf->share <<= pageshift;
buf->rss <<= pageshift;
buf->flags |= _glibtop_sysdeps_proc_mem_statm;
}
|
