components/OpenBSD/cpu.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <errno.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <sys/sysctl.h>
   6
   7 #include "../../util.h"
   8
   9 const char *
  10 cpu_freq(void)
  11 {
  12         int freq, mib[2];
  13         size_t size;
  14
  15         mib[0] = CTL_HW;
  16         mib[1] = HW_CPUSPEED;
  17
  18         size = sizeof(freq);
  19
  20         if (sysctl(mib, 2, &freq, &size, NULL, 0) == -1) {
  21                 fprintf(stderr, "sysctl 'HW_CPUSPEED': %s\n", strerror(errno));
  22                 return NULL;
  23         }
  24
  25         return bprintf("%d", freq);
  26 }