release/src/router/dnscrypt/src/libnacl/cpucycles/x86tscfreq.c

   1 #include <sys/types.h>
   2 #include <sys/param.h>
   3 #include <sys/sysctl.h>
   4
   5 long long cpucycles_x86tscfreq(void)
   6 {
   7   long long result;
   8   asm volatile(".byte 15;.byte 49" : "=A" (result));
   9   return result;
  10 }
  11
  12 long long cpucycles_x86tscfreq_persecond(void)
  13 {
  14   long result = 0;
  15   size_t resultlen = sizeof(long);
  16   sysctlbyname("machdep.tsc_freq",&result,&resultlen,0,0);
  17   return result;
  18 }