src/libstatgrab/page_stats.c

/* 
 * i-scream central monitoring system
 * http://www.i-scream.org.uk
 * Copyright (C) 2000-2002 i-scream
 * 
 * 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 2
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <statgrab.h>
#ifdef SOLARIS
#include <kstat.h>
#include <sys/sysinfo.h>
#endif

page_stat_t *get_page_stats(){
        static page_stat_t page_stats;
        kstat_ctl_t *kc;
        kstat_t *ksp;
        cpu_stat_t cs;
        uint_t swapin, swapout;

        if ((kc = kstat_open()) == NULL) {
                errf("kstat_open failure (%m)");
                return NULL;
        }
        for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
                if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
                if (kstat_read(kc, ksp, &cs) == -1) {
                        continue;
                }

                page_stats+=cs.cpu_vminfo.pgswapin;
                page_stats+=cs.cpu_vminfo.pgswapout;

}
Revision:	1.1
Committed:	Tue Feb 18 19:28:30 2003 UTC (21 years, 2 months ago) by pajs
Content type:	text/plain
Branch:	MAIN
Log Message:	The new revesion of libstatgrab, which is a complete rewrite essentially. Firstly the data is now returned in structures rather than xml strings. The structures returned are all static, so what ever calls the library doesn't have to deal with the memory management of it. Secondly the general efficency of the code is now significantly faster. It no longer needs to fork a process, connect file descriptors and run ps, and then parse the output like it used to. Now it walks /proc and reads it into the correct data structures. This works without needing any special privilages, so it can still run as a normal mortal without needing any special group. (Freebsd will be an exception to this, but this commit only works with solaris, and that requires nothing special) Thridly it has more functionality than it used to. It not for instance is capable of showing network traffic stats, (although its not completely finished yet). It also in the near future be able to disk io stats as well. Several bug fixes have been aplied over the original version. For example the cpu_stats used to only reply the stats for the first processor. This now will report the total stats of all of them. Paging stats will also be fixed, but haven't been done yet.
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org.uk
4	* Copyright (C) 2000-2002 i-scream
5	*
6	* This program is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU General Public License
8	* as published by the Free Software Foundation; either version 2
9	* of the License, or (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19	*/
20
21	#ifdef HAVE_CONFIG_H
22	#include "config.h"
23	#endif
24
25	#include <stdio.h>
26	#include <statgrab.h>
27	#ifdef SOLARIS
28	#include <kstat.h>
29	#include <sys/sysinfo.h>
30	#endif
31
32	page_stat_t *get_page_stats(){
33	static page_stat_t page_stats;
34	kstat_ctl_t *kc;
35	kstat_t *ksp;
36	cpu_stat_t cs;
37	uint_t swapin, swapout;
38
39	if ((kc = kstat_open()) == NULL) {
40	errf("kstat_open failure (%m)");
41	return NULL;
42	}
43	for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
44	if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
45	if (kstat_read(kc, ksp, &cs) == -1) {
46	continue;
47	}
48
49	page_stats+=cs.cpu_vminfo.pgswapin;
50	page_stats+=cs.cpu_vminfo.pgswapout;
51
52	}