#include <X11/Xlib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>

double get_time(void) {
    struct timeval timev;
    gettimeofday(&timev, NULL);
    return (double)timev.tv_sec + (((double)timev.tv_usec) / 1000000);
}

int main() {
    int count = 500;
    Atom* atoms_x = (Atom*)malloc(count * sizeof(atoms_x));
    char** names;
    double end, diff_x;

    /* init names */
    names = (char**)malloc(count * sizeof(char*));
    for (int i = 0; i < count; ++i) {
        char buf[100];
        sprintf(buf, "NAME%d", i);
        names[i] = strdup(buf);
    }

    auto start = get_time();
    auto disp = XOpenDisplay(getenv("DISPLAY"));
    for (int i = 0; i < count; ++i)
        atoms_x[i] = XInternAtom(disp, names[i], 0);
    end = get_time();
    XCloseDisplay(disp);

    diff_x = end - start;
    printf("Xlib use time : %f\n", diff_x);

    free(atoms_x);

    for (int i = 0; i < count; ++i)
        free(names[i]);
    free(names);
    return 0;
}