#include #include #include #include using namespace std; int main () { unsigned long a, d, prevd; struct timeval tv; prevd = 0; for (;;) { asm volatile("rdtsc":"=a" (a), "=d" (d)); gettimeofday (&tv, 0); if (d != prevd) { cout << setfill(' ') << d << " " << setw(11) << a << setw(12) << tv.tv_sec << "." << setw(6) << setfill('0') << tv.tv_usec << endl; prevd = d; } } }