1 #include <liblockdep/mutex.h> 2 #include "common.h" 3 main(void)4void main(void) 5 { 6 pthread_mutex_t a, b, c, d; 7 8 pthread_mutex_init(&a, NULL); 9 pthread_mutex_init(&b, NULL); 10 pthread_mutex_init(&c, NULL); 11 pthread_mutex_init(&d, NULL); 12 13 LOCK_UNLOCK_2(a, b); 14 LOCK_UNLOCK_2(b, c); 15 LOCK_UNLOCK_2(c, d); 16 LOCK_UNLOCK_2(d, a); 17 } 18