1 /* A simple race */ 2 3 #include <pthread.h> 4 #include <unistd.h> 5 6 static int shared; 7 8 static void *th(void *v) 9 { 10 shared++; 11 12 return 0; 13 } 14 15 int 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
