-rw-r--r-- 341 djbsort-20190516/cpucycles/amd64cpuinfo/cpucycles.c
#include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include "osfreq.c" #include "cpucycles.h" long long cpucycles(void) { unsigned long long result; asm volatile(".byte 15;.byte 49;shlq $32,%%rdx;orq %%rdx,%%rax" : "=a" (result) :: "%rdx"); return result; } long long cpucycles_persecond(void) { return osfreq(); }