src/macos_mach_smi.c

   1 #include "common.h"
   2 #include <mach/mach_host.h>
   3
   4 int do_macos_mach_smi(int update_every, usec_t dt) {
   5     (void)dt;
   6
   7     static int do_cpu = -1;
   8
   9     if (unlikely(do_cpu == -1)) {
  10         do_cpu                  = config_get_boolean("plugin:macos:mach_smi", "cpu utilization", 1);
  11     }
  12
  13     RRDSET *st;
  14
  15     // NEEDED BY: do_cpu, do_cpu_cores
  16     natural_t cp_time[CPU_STATE_MAX];
  17         kern_return_t kr;
  18         mach_msg_type_number_t count;
  19
  20     // --------------------------------------------------------------------
  21
  22     if (likely(do_cpu)) {
  23         if (unlikely(HOST_CPU_LOAD_INFO_COUNT != 4)) {
  24             error("FREEBSD: There are %d CPU states (4 was expected)", HOST_CPU_LOAD_INFO_COUNT);
  25             do_cpu = 0;
  26             error("DISABLED: system.cpu");
  27         } else {
  28             count = HOST_CPU_LOAD_INFO_COUNT;
  29             if (unlikely(kr = host_statistics(mach_host_self(), HOST_CPU_LOAD_INFO, (host_info_t)cp_time, &count))) {
  30                 if (kr != KERN_SUCCESS) {
  31                     error("MACOS: host_statistics() failed: %s", mach_error_string(kr));
  32                     do_cpu = 0;
  33                     error("DISABLED: system.cpu");
  34                 }
  35             } else {
  36
  37                 st = rrdset_find_bytype("system", "cpu");
  38                 if (unlikely(!st)) {
  39                     st = rrdset_create("system", "cpu", NULL, "cpu", "system.cpu", "Total CPU utilization", "percentage", 100, update_every, RRDSET_TYPE_STACKED);
  40
  41                     rrddim_add(st, "user", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
  42                     rrddim_add(st, "nice", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
  43                     rrddim_add(st, "system", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
  44                     rrddim_add(st, "idle", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
  45                     rrddim_hide(st, "idle");
  46                 }
  47                 else rrdset_next(st);
  48
  49                 rrddim_set(st, "user", cp_time[CPU_STATE_USER]);
  50                 rrddim_set(st, "nice", cp_time[CPU_STATE_NICE]);
  51                 rrddim_set(st, "system", cp_time[CPU_STATE_SYSTEM]);
  52                 rrddim_set(st, "idle", cp_time[CPU_STATE_IDLE]);
  53                 rrdset_done(st);
  54             }
  55         }
  56      }
  57
  58     return 0;
  59 }