| 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 <unistd.h> |
| 27 |
#include <stdlib.h> |
| 28 |
#include <time.h> |
| 29 |
#include <string.h> |
| 30 |
#include "statgrab.h" |
| 31 |
#ifdef SOLARIS |
| 32 |
#include <kstat.h> |
| 33 |
#include <sys/sysinfo.h> |
| 34 |
#endif |
| 35 |
|
| 36 |
static cpu_states_t cpu_now; |
| 37 |
static int cpu_now_uninit=1; |
| 38 |
|
| 39 |
cpu_states_t *get_cpu_totals(){ |
| 40 |
|
| 41 |
#ifdef SOLARIS |
| 42 |
kstat_ctl_t *kc; |
| 43 |
kstat_t *ksp; |
| 44 |
cpu_stat_t cs; |
| 45 |
|
| 46 |
cpu_now.user=0; |
| 47 |
cpu_now.iowait=0; |
| 48 |
cpu_now.kernel=0; |
| 49 |
cpu_now.idle=0; |
| 50 |
cpu_now.swap=0; |
| 51 |
cpu_now.total=0; |
| 52 |
/* Not stored in solaris */ |
| 53 |
cpu_now.nice=0; |
| 54 |
|
| 55 |
if ((kc = kstat_open()) == NULL) { |
| 56 |
return NULL; |
| 57 |
} |
| 58 |
for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) { |
| 59 |
if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue; |
| 60 |
if (kstat_read(kc, ksp, &cs) == -1) { |
| 61 |
continue; |
| 62 |
} |
| 63 |
cpu_now.user+=cs.cpu_sysinfo.cpu[CPU_USER]; |
| 64 |
cpu_now.iowait+=cs.cpu_sysinfo.cpu[CPU_WAIT]; |
| 65 |
cpu_now.kernel+=cs.cpu_sysinfo.cpu[CPU_KERNEL]; |
| 66 |
cpu_now.idle+=cs.cpu_sysinfo.cpu[CPU_IDLE]; |
| 67 |
cpu_now.swap+=cs.cpu_sysinfo.cpu[CPU_STATES]; |
| 68 |
} |
| 69 |
|
| 70 |
cpu_now.total=cpu_now.user+cpu_now.iowait+cpu_now.kernel+cpu_now.idle+cpu_now.swap; |
| 71 |
cpu_now_uninit=0; |
| 72 |
|
| 73 |
kstat_close(kc); |
| 74 |
#endif |
| 75 |
|
| 76 |
cpu_now.systime=time(NULL); |
| 77 |
|
| 78 |
return &cpu_now; |
| 79 |
} |
| 80 |
|
| 81 |
cpu_states_t *get_cpu_diff(){ |
| 82 |
static cpu_states_t cpu_diff; |
| 83 |
cpu_states_t cpu_then, *cpu_tmp; |
| 84 |
|
| 85 |
if (cpu_now_uninit){ |
| 86 |
if((cpu_tmp=get_cpu_totals())==NULL){ |
| 87 |
/* Should get_cpu_totals fail */ |
| 88 |
return NULL; |
| 89 |
} |
| 90 |
return cpu_tmp; |
| 91 |
} |
| 92 |
|
| 93 |
|
| 94 |
cpu_then.user=cpu_now.user; |
| 95 |
cpu_then.kernel=cpu_now.kernel; |
| 96 |
cpu_then.idle=cpu_now.idle; |
| 97 |
cpu_then.iowait=cpu_now.iowait; |
| 98 |
cpu_then.swap=cpu_now.swap; |
| 99 |
cpu_then.nice=cpu_now.nice; |
| 100 |
cpu_then.total=cpu_now.total; |
| 101 |
cpu_then.systime=cpu_now.systime; |
| 102 |
|
| 103 |
if((cpu_tmp=get_cpu_totals())==NULL){ |
| 104 |
return NULL; |
| 105 |
} |
| 106 |
|
| 107 |
cpu_diff.user = cpu_now.user - cpu_then.user; |
| 108 |
cpu_diff.kernel = cpu_now.kernel - cpu_then.kernel; |
| 109 |
cpu_diff.idle = cpu_now.idle - cpu_then.idle; |
| 110 |
cpu_diff.iowait = cpu_now.iowait - cpu_then.iowait; |
| 111 |
cpu_diff.swap = cpu_now.swap - cpu_then.swap; |
| 112 |
cpu_diff.nice = cpu_now.nice - cpu_then.nice; |
| 113 |
cpu_diff.total = cpu_now.total - cpu_then.total; |
| 114 |
cpu_diff.systime = cpu_now.systime - cpu_then.systime; |
| 115 |
|
| 116 |
return &cpu_diff; |
| 117 |
} |
| 118 |
|
| 119 |
cpu_percent_t *cpu_percent_usage(){ |
| 120 |
static cpu_percent_t cpu_usage; |
| 121 |
cpu_states_t *cs_ptr; |
| 122 |
|
| 123 |
cs_ptr=get_cpu_diff(); |
| 124 |
if(cs_ptr==NULL){ |
| 125 |
return NULL; |
| 126 |
} |
| 127 |
|
| 128 |
cpu_usage.user = ((float)cs_ptr->user / (float)cs_ptr->total)*100; |
| 129 |
cpu_usage.kernel = ((float)cs_ptr->kernel / (float)cs_ptr->total)*100; |
| 130 |
cpu_usage.idle = ((float)cs_ptr->idle / (float)cs_ptr->total)*100; |
| 131 |
cpu_usage.iowait = ((float)cs_ptr->iowait / (float)cs_ptr->total)*100; |
| 132 |
cpu_usage.swap = ((float)cs_ptr->swap / (float)cs_ptr->total)*100; |
| 133 |
cpu_usage.nice = ((float)cs_ptr->nice / (float)cs_ptr->total)*100; |
| 134 |
cpu_usage.time_taken = cs_ptr->systime; |
| 135 |
|
| 136 |
return &cpu_usage; |
| 137 |
|
| 138 |
} |
| 139 |
|
