gistfile1.txt

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <time.h>

// we're aliasing here since modern MacOS doesn't use the same system toolbox 
void SystemTask() { usleep(50000); } // Yield to system 
int WaitNextEvent() { SystemTask(); return rand() % 2; } // 50% chance of event

void doStuff() { printf("Doing stuff!\n"); }

int main() {
    srand(time(NULL));
    int done = 0;
    while (!done) {
        if (WaitNextEvent()) {
            printf("Event received!\n");
            doStuff();
            done = 1;
        } else {
            printf("No event recieved, yielding...\n");
        }
        SystemTask(); // yield to the system after every event loop
    }
    return 0;
}