# Pastebin crO3zEhX
#include <stdint.h>
#include <unistd.h>
#include <stdio.h>
#include <time.h>

#ifdef __HAIKU__
#define TEST_SYSCALL()		_kern_is_computer_on()
#else
#include <asm/unistd.h>
#define TEST_SYSCALL()		syscall(__NR_getuid)
#endif

#define TEST_COUNT 1000000

int main(int argc, char **argv)
{
    struct timespec tp, t1;
    uint64_t delta = 0;

    // warm-up
    clock_gettime(CLOCK_MONOTONIC, &t1);
    for (int i = 0; i < TEST_COUNT; i++) {
        TEST_SYSCALL();
    }
    clock_gettime(CLOCK_MONOTONIC, &tp);

    clock_gettime(CLOCK_MONOTONIC, &t1);
    for (int i = 0; i < TEST_COUNT; i++) {
       TEST_SYSCALL();
    }
    clock_gettime(CLOCK_MONOTONIC, &tp);
    delta += (1000000000 * tp.tv_sec + tp.tv_nsec) - (1000000000 * t1.tv_sec + t1.tv_nsec);

    printf("avg: %fns\n", (double) delta / TEST_COUNT);

    return 0;
}