You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
#ifndef SFRT_UTIL_H
|
|
|
|
|
#define SFRT_UTIL_H
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Get CPU time in cycles using the Intel instruction util__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 */
|
