C++ (Cpp) read_virtual_count Exemples

Exemple #1

Fichier : entropy_cpu_xen_stubs.c Projet : hannesm/mirage-entropy

CAMLprim value caml_cycle_counter (value unit) {
#if defined (__x86__)
  return Val_long (__rdtsc ());
#elif defined (__arm__)
  return Val_long (read_virtual_count ());
#else
#error ("No known cycle-counting instruction.")
#endif
}

Exemple #2

Fichier : time.c Projet : Geal/mini-os

/* monotonic_clock(): returns # of nanoseconds passed since time_init()
 *        Note: This function is required to return accurate
 *        time even in the absence of multiple timer ticks.
 */
uint64_t monotonic_clock(void)
{
    return ticks_to_ns(read_virtual_count() - cntvct_at_init);
}