public static int pthread_cond_broadcast(ref pthread_cond_t c)
 {
     return(0);
 }
 public static int pthread_cond_destroy(ref pthread_cond_t c)
 {
     return(0);
 }
 public static int pthread_cond_init(ref pthread_cond_t c, pthread_condattr_t a)
 {
     return(0);
 }
 public static int pthread_cond_wait(ref pthread_cond_t c, ref pthread_mutex_t m)
 {
     return(0);
 }