1/* A simple race */ 2 3#include <pthread.h> 4#include <unistd.h> 5 6static int shared; 7 8static void *th(void *v) 9{ 10 shared++; 11 12 return 0; 13} 14 15int main() 16{ 17 pthread_t a, b; 18 19 pthread_create(&a, NULL, th, NULL); 20 sleep(1); /* force ordering */ 21 pthread_create(&b, NULL, th, NULL); 22 23 pthread_join(a, NULL); 24 pthread_join(b, NULL); 25 26 return 0; 27} 28