ihost/libstatgrab/cpu_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 <ukcprog.h>
#include <unistd.h>
#ifdef SOLARIS
#include <kstat.h>
#include <sys/sysinfo.h>
#endif
#ifdef FREEBSD
#include <sys/sysctl.h>
#include <sys/dkstat.h>
#endif
#define WAIT_TIME_IN_SECS 1
char *get_cpu_stats(){
                char *xml_cpu_stats;
                double u_p=0.00;
                double i_p=0.00;
                double k_p=0.00;
                double io_p=0.00;
                double s_p=0.00;
#ifdef LINUX
        long total, user, idle, kernel, nice;
        long cpu_states[4][2];
        FILE *f;
#endif
#ifdef SOLARIS
        kstat_ctl_t *kc;
        kstat_t *ksp;
        uint_t cpu_states[5][2];
        uint_t user, kernel, idle, iowait, swap, total;
        cpu_stat_t cs;
        
#endif
#ifdef FREEBSD
        long cp_time[CPUSTATES];
        long total, user, idle, kernel, nice;
        size_t size;    
#endif

#ifdef LINUX
        if ((f=fopen("/proc/stat", "r" ))==NULL) {       
                errf("Failed to open /proc/stat (%m)");
                return NULL;
        }

        /* cpu stats should be the first line.. */
        if((fscanf(f,"%*s %ld %ld %ld %ld", &cpu_states[0][0], &cpu_states[1][0], &cpu_states[2][0] ,&cpu_states[3][0])) != 4){
                errf("Failed to read in correct number of CPU stats (%m)");
                return NULL;
        }

        if ((fclose(f)) != 0) {
                errf("Failed to close file (%m)");
                return NULL;
        }

        sleep(WAIT_TIME_IN_SECS);

        if ((f=fopen("/proc/stat", "r" ))==NULL) {       
                errf("Failed to open /proc/stat (%m)");
                return NULL;
        }
        if((fscanf(f,"%*s %ld %ld %ld %ld", &cpu_states[0][1], &cpu_states[1][1], &cpu_states[2][1] ,&cpu_states[3][1])) != 4){
                errf("Failed to read in correct number of CPU stats (%m)");
                return NULL;
        }

        if ((fclose(f)) != 0) {
                errf("Failed to close file (%m)");
                return NULL;
        }

        user=cpu_states[0][1]-cpu_states[0][0]+cpu_states[1][1]-cpu_states[1][0];
        kernel=cpu_states[2][1]-cpu_states[2][0];
        idle=cpu_states[3][1]-cpu_states[3][0];
        total=user+kernel+idle;

        u_p=((double)user/(double)total)*100.00;
        k_p=((double)kernel/(double)total)*100.00;
        i_p=((double)idle/(double)total)*100.00;

#endif
#ifdef SOLARIS
        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) {
                        errf("kstat read failure");
                        continue;
                }
        }
        cpu_states[0][0]=cs.cpu_sysinfo.cpu[CPU_USER];
        cpu_states[1][0]=cs.cpu_sysinfo.cpu[CPU_WAIT];
        cpu_states[2][0]=cs.cpu_sysinfo.cpu[CPU_KERNEL];
        cpu_states[3][0]=cs.cpu_sysinfo.cpu[CPU_IDLE];
        cpu_states[4][0]=cs.cpu_sysinfo.cpu[CPU_STATES];

        sleep(WAIT_TIME_IN_SECS);
        
        if (kstat_chain_update(kc) == -1) {
                errf("Kstat update 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) {
                        errf("kstat read failure");
                        continue;
                }
        }
        cpu_states[0][1]=cs.cpu_sysinfo.cpu[CPU_USER];
        cpu_states[1][1]=cs.cpu_sysinfo.cpu[CPU_WAIT];
        cpu_states[2][1]=cs.cpu_sysinfo.cpu[CPU_KERNEL];
        cpu_states[3][1]=cs.cpu_sysinfo.cpu[CPU_IDLE];
        cpu_states[4][1]=cs.cpu_sysinfo.cpu[CPU_STATES];

        if((kstat_close(kc)) != 0){
                errf("Failed to close kstat control structure (%m)");
                return NULL;
        }

        user=cpu_states[0][1]-cpu_states[0][0];
        iowait=cpu_states[1][1]-cpu_states[1][0];
        kernel=cpu_states[2][1]-cpu_states[2][0];
        idle=cpu_states[3][1]-cpu_states[3][0];
        swap=cpu_states[4][1]-cpu_states[4][0];
        total=user+kernel+idle+iowait+swap;

        u_p=((double)user/(double)total)*100.00;
        k_p=((double)kernel/(double)total)*100.00;
        i_p=((double)idle/(double)total)*100.00;
        io_p=((double)iowait/(double)total)*100.00;
        s_p=((double)swap/(double)total)*100.00;

#endif  
#ifdef FREEBSD

#define CPU_STAT_NAME "kern.cp_time"

        if (sysctlbyname(CPU_STAT_NAME, NULL, &size, NULL, NULL) < 0){  
                errf("sysctrlbyname failed (%m)");
                return NULL;
        }
        if (sysctlbyname(CPU_STAT_NAME, &cp_time, &size, NULL, NULL) < 0){
                errf("Failed to get cpu stats (%m)");
                return NULL;
        }

        user=cp_time[CP_USER];
        nice=cp_time[CP_NICE];
        kernel=cp_time[CP_SYS];
        idle=cp_time[CP_IDLE];

        sleep(WAIT_TIME_IN_SECS);

        if (sysctlbyname(CPU_STAT_NAME, &cp_time, &size, NULL, NULL) < 0){
                errf("Failed to get cpu stats (%m)");
                return NULL;
        }

        user=cp_time[CP_USER]-user;
        nice=cp_time[CP_NICE]-nice;
        kernel=cp_time[CP_SYS]-kernel;
        idle=cp_time[CP_IDLE]-idle;
        total=user+nice+kernel+idle;

        u_p=((float)(user+nice)/(float)total)*100.0;
        k_p=((float)(kernel)/(float)total)*100.0;
        i_p=((float)(idle)/(float)total)*100.0;
        
#endif


        if((xml_cpu_stats=strf("<cpu><user>%3.2f</user><kernel>%3.2f</kernel><idle>%3.2f</idle><iowait>%3.2f</iowait><swap>%3.2f</swap></cpu>", u_p, k_p, i_p, io_p, s_p)) == NULL){
                errf("strf failed (%m)");
                return NULL;
        }

        return xml_cpu_stats;
}

Revision:	1.6
Committed:	Mon Mar 3 12:32:36 2003 UTC (21 years, 6 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.5:	+0 -0 lines
State:	*FILE REMOVED*
Error occurred while calculating annotation data.
Log Message:	Following up on Pete's commit of the new ihost - the new configure stuff. Also dropped the old libstatgrab.
#	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 <ukcprog.h>
27	#include <unistd.h>
28	#ifdef SOLARIS
29	#include <kstat.h>
30	#include <sys/sysinfo.h>
31	#endif
32	#ifdef FREEBSD
33	#include <sys/sysctl.h>
34	#include <sys/dkstat.h>
35	#endif
36	#define WAIT_TIME_IN_SECS 1
37	char *get_cpu_stats(){
38	char *xml_cpu_stats;
39	double u_p=0.00;
40	double i_p=0.00;
41	double k_p=0.00;
42	double io_p=0.00;
43	double s_p=0.00;
44	#ifdef LINUX
45	long total, user, idle, kernel, nice;
46	long cpu_states[4][2];
47	FILE *f;
48	#endif
49	#ifdef SOLARIS
50	kstat_ctl_t *kc;
51	kstat_t *ksp;
52	uint_t cpu_states[5][2];
53	uint_t user, kernel, idle, iowait, swap, total;
54	cpu_stat_t cs;
55
56	#endif
57	#ifdef FREEBSD
58	long cp_time[CPUSTATES];
59	long total, user, idle, kernel, nice;
60	size_t size;
61	#endif
62
63	#ifdef LINUX
64	if ((f=fopen("/proc/stat", "r" ))==NULL) {
65	errf("Failed to open /proc/stat (%m)");
66	return NULL;
67	}
68
69	/* cpu stats should be the first line.. */
70	if((fscanf(f,"%*s %ld %ld %ld %ld", &cpu_states[0][0], &cpu_states[1][0], &cpu_states[2][0] ,&cpu_states[3][0])) != 4){
71	errf("Failed to read in correct number of CPU stats (%m)");
72	return NULL;
73	}
74
75	if ((fclose(f)) != 0) {
76	errf("Failed to close file (%m)");
77	return NULL;
78	}
79
80	sleep(WAIT_TIME_IN_SECS);
81
82	if ((f=fopen("/proc/stat", "r" ))==NULL) {
83	errf("Failed to open /proc/stat (%m)");
84	return NULL;
85	}
86	if((fscanf(f,"%*s %ld %ld %ld %ld", &cpu_states[0][1], &cpu_states[1][1], &cpu_states[2][1] ,&cpu_states[3][1])) != 4){
87	errf("Failed to read in correct number of CPU stats (%m)");
88	return NULL;
89	}
90
91	if ((fclose(f)) != 0) {
92	errf("Failed to close file (%m)");
93	return NULL;
94	}
95
96	user=cpu_states[0][1]-cpu_states[0][0]+cpu_states[1][1]-cpu_states[1][0];
97	kernel=cpu_states[2][1]-cpu_states[2][0];
98	idle=cpu_states[3][1]-cpu_states[3][0];
99	total=user+kernel+idle;
100
101	u_p=((double)user/(double)total)*100.00;
102	k_p=((double)kernel/(double)total)*100.00;
103	i_p=((double)idle/(double)total)*100.00;
104
105	#endif
106	#ifdef SOLARIS
107	if ((kc = kstat_open()) == NULL) {
108	errf("kstat_open failure (%m)");
109	return NULL;
110	}
111	for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
112	if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
113	if (kstat_read(kc, ksp, &cs) == -1) {
114	errf("kstat read failure");
115	continue;
116	}
117	}
118	cpu_states[0][0]=cs.cpu_sysinfo.cpu[CPU_USER];
119	cpu_states[1][0]=cs.cpu_sysinfo.cpu[CPU_WAIT];
120	cpu_states[2][0]=cs.cpu_sysinfo.cpu[CPU_KERNEL];
121	cpu_states[3][0]=cs.cpu_sysinfo.cpu[CPU_IDLE];
122	cpu_states[4][0]=cs.cpu_sysinfo.cpu[CPU_STATES];
123
124	sleep(WAIT_TIME_IN_SECS);
125
126	if (kstat_chain_update(kc) == -1) {
127	errf("Kstat update failure (%m)");
128	return NULL;
129	}
130	for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
131	if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
132	if (kstat_read(kc, ksp, &cs) == -1) {
133	errf("kstat read failure");
134	continue;
135	}
136	}
137	cpu_states[0][1]=cs.cpu_sysinfo.cpu[CPU_USER];
138	cpu_states[1][1]=cs.cpu_sysinfo.cpu[CPU_WAIT];
139	cpu_states[2][1]=cs.cpu_sysinfo.cpu[CPU_KERNEL];
140	cpu_states[3][1]=cs.cpu_sysinfo.cpu[CPU_IDLE];
141	cpu_states[4][1]=cs.cpu_sysinfo.cpu[CPU_STATES];
142
143	if((kstat_close(kc)) != 0){
144	errf("Failed to close kstat control structure (%m)");
145	return NULL;
146	}
147
148	user=cpu_states[0][1]-cpu_states[0][0];
149	iowait=cpu_states[1][1]-cpu_states[1][0];
150	kernel=cpu_states[2][1]-cpu_states[2][0];
151	idle=cpu_states[3][1]-cpu_states[3][0];
152	swap=cpu_states[4][1]-cpu_states[4][0];
153	total=user+kernel+idle+iowait+swap;
154
155	u_p=((double)user/(double)total)*100.00;
156	k_p=((double)kernel/(double)total)*100.00;
157	i_p=((double)idle/(double)total)*100.00;
158	io_p=((double)iowait/(double)total)*100.00;
159	s_p=((double)swap/(double)total)*100.00;
160
161	#endif
162	#ifdef FREEBSD
163
164	#define CPU_STAT_NAME "kern.cp_time"
165
166	if (sysctlbyname(CPU_STAT_NAME, NULL, &size, NULL, NULL) < 0){
167	errf("sysctrlbyname failed (%m)");
168	return NULL;
169	}
170	if (sysctlbyname(CPU_STAT_NAME, &cp_time, &size, NULL, NULL) < 0){
171	errf("Failed to get cpu stats (%m)");
172	return NULL;
173	}
174
175	user=cp_time[CP_USER];
176	nice=cp_time[CP_NICE];
177	kernel=cp_time[CP_SYS];
178	idle=cp_time[CP_IDLE];
179
180	sleep(WAIT_TIME_IN_SECS);
181
182	if (sysctlbyname(CPU_STAT_NAME, &cp_time, &size, NULL, NULL) < 0){
183	errf("Failed to get cpu stats (%m)");
184	return NULL;
185	}
186
187	user=cp_time[CP_USER]-user;
188	nice=cp_time[CP_NICE]-nice;
189	kernel=cp_time[CP_SYS]-kernel;
190	idle=cp_time[CP_IDLE]-idle;
191	total=user+nice+kernel+idle;
192
193	u_p=((float)(user+nice)/(float)total)*100.0;
194	k_p=((float)(kernel)/(float)total)*100.0;
195	i_p=((float)(idle)/(float)total)*100.0;
196
197	#endif
198
199
200	if((xml_cpu_stats=strf("<cpu><user>%3.2f</user><kernel>%3.2f</kernel><idle>%3.2f</idle><iowait>%3.2f</iowait><swap>%3.2f</swap></cpu>", u_p, k_p, i_p, io_p, s_p)) == NULL){
201	errf("strf failed (%m)");
202	return NULL;
203	}
204
205	return xml_cpu_stats;
206	}
207