#ifndef SFRT_UTIL_H #define SFRT_UTIL_H /** * Get CPU time in cycles using the Intel instruction rdtsc * @return CPU time in cycles **/ static unsigned long long int util__rdtsc(void) { unsigned long long int cpu_time_in_cycles = 0; unsigned int cycles_lo; unsigned int cycles_hi; __asm__ volatile("rdtsc" : "=a"(cycles_lo), "=d"(cycles_hi)); cpu_time_in_cycles = (unsigned long long int)cycles_hi << 32 | cycles_lo; return cpu_time_in_cycles; } #endif /* SFRT_UTIL_H */