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/* |
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* i-scream central monitoring system |
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* i-scream libstatgrab |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2004 i-scream |
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* |
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#include <time.h> |
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#include "statgrab.h" |
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#include "tools.h" |
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#ifdef SOLARIS |
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#include <kstat.h> |
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#include <sys/sysinfo.h> |
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#include <sys/dkstat.h> |
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#endif |
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static cpu_states_t cpu_now; |
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static sg_cpu_stats cpu_now; |
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static int cpu_now_uninit=1; |
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cpu_states_t *get_cpu_totals(){ |
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sg_cpu_stats *sg_get_cpu_stats(){ |
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#ifdef SOLARIS |
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kstat_ctl_t *kc; |
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kstat_t *ksp; |
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kstat_ctl_t *kc; |
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kstat_t *ksp; |
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cpu_stat_t cs; |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) |
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#endif |
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size_t size; |
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#endif |
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cpu_now.user=0; |
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/* Not stored in linux or freebsd */ |
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cpu_now.iowait=0; |
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cpu_now.nice=0; |
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#ifdef SOLARIS |
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if ((kc = kstat_open()) == NULL) { |
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return NULL; |
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} |
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for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) { |
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if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue; |
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if (kstat_read(kc, ksp, &cs) == -1) { |
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continue; |
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} |
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if ((kc = kstat_open()) == NULL) { |
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sg_set_error(SG_ERROR_KSTAT_OPEN, NULL); |
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return NULL; |
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} |
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for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) { |
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if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue; |
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if (kstat_read(kc, ksp, &cs) == -1) { |
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continue; |
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} |
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cpu_now.user+=(long long)cs.cpu_sysinfo.cpu[CPU_USER]; |
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cpu_now.iowait+=(long long)cs.cpu_sysinfo.cpu[CPU_WAIT]; |
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cpu_now.kernel+=(long long)cs.cpu_sysinfo.cpu[CPU_KERNEL]; |
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cpu_now.total=cpu_now.user+cpu_now.iowait+cpu_now.kernel+cpu_now.idle+cpu_now.swap; |
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kstat_close(kc); |
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kstat_close(kc); |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) |
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if ((f=fopen("/proc/stat", "r" ))==NULL) { |
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sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/stat"); |
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return NULL; |
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} |
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/* The very first line should be cpu */ |
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&cpu_now.nice, \ |
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&cpu_now.kernel, \ |
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&cpu_now.idle)) != 4){ |
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sg_set_error(SG_ERROR_PARSE, "cpu"); |
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fclose(f); |
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return NULL; |
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} |
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#if defined(FREEBSD) || defined(DFBSD) |
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size = sizeof cp_time; |
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if (sysctlbyname("kern.cp_time", &cp_time, &size, NULL, 0) < 0){ |
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sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "kern.cp_time"); |
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return NULL; |
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} |
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#else |
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#endif |
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size = sizeof cp_time; |
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if (sysctl(mib, 2, &cp_time, &size, NULL, 0) < 0) { |
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#ifdef NETBSD |
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sg_set_error_with_errno(SG_ERROR_SYSCTL, |
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"CTL_KERN.KERN_CP_TIME"); |
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#else |
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sg_set_error_with_errno(SG_ERROR_SYSCTL, |
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"CTL_KERN.KERN_CPTIME"); |
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#endif |
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return NULL; |
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} |
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#endif |
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return &cpu_now; |
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} |
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cpu_states_t *get_cpu_diff(){ |
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static cpu_states_t cpu_diff; |
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cpu_states_t cpu_then, *cpu_tmp; |
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sg_cpu_stats *sg_get_cpu_stats_diff(){ |
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static sg_cpu_stats cpu_diff; |
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sg_cpu_stats cpu_then, *cpu_tmp; |
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if (cpu_now_uninit){ |
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if((cpu_tmp=get_cpu_totals())==NULL){ |
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/* Should get_cpu_totals fail */ |
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if((cpu_tmp=sg_get_cpu_stats())==NULL){ |
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/* Should sg_get_cpu_stats fail */ |
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return NULL; |
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} |
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return cpu_tmp; |
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} |
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cpu_then.user=cpu_now.user; |
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cpu_then.kernel=cpu_now.kernel; |
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cpu_then.idle=cpu_now.idle; |
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cpu_then.iowait=cpu_now.iowait; |
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cpu_then.swap=cpu_now.swap; |
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cpu_then.nice=cpu_now.nice; |
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cpu_then.total=cpu_now.total; |
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cpu_then.systime=cpu_now.systime; |
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cpu_then.user=cpu_now.user; |
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cpu_then.kernel=cpu_now.kernel; |
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cpu_then.idle=cpu_now.idle; |
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cpu_then.iowait=cpu_now.iowait; |
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cpu_then.swap=cpu_now.swap; |
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cpu_then.nice=cpu_now.nice; |
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cpu_then.total=cpu_now.total; |
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cpu_then.systime=cpu_now.systime; |
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if((cpu_tmp=get_cpu_totals())==NULL){ |
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if((cpu_tmp=sg_get_cpu_stats())==NULL){ |
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return NULL; |
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} |
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return &cpu_diff; |
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} |
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cpu_percent_t *cpu_percent_usage(){ |
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static cpu_percent_t cpu_usage; |
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cpu_states_t *cs_ptr; |
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sg_cpu_percents *sg_get_cpu_percents(){ |
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static sg_cpu_percents cpu_usage; |
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sg_cpu_stats *cs_ptr; |
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cs_ptr=get_cpu_diff(); |
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cs_ptr=sg_get_cpu_stats_diff(); |
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if(cs_ptr==NULL){ |
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return NULL; |
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} |
