+typedef struct {
+ unsigned unused : 1;
+} sthread_barrierattr_t;
+
+typedef struct {
+ void* barrier;
+} sthread_barrier_t;
+int sthread_barrier_init(sthread_barrier_t* barrier, const sthread_barrierattr_t* attr, unsigned count);
+int sthread_barrier_wait(sthread_barrier_t* barrier);
+int sthread_barrier_destroy(sthread_barrier_t* barrier);
+
+typedef struct {
+ void* sem;
+} sthread_sem_t;
+int sthread_sem_init(sthread_sem_t* sem, int pshared, unsigned int value);
+int sthread_sem_destroy(sthread_sem_t* sem);
+int sthread_sem_post(sthread_sem_t* sem);
+int sthread_sem_wait(sthread_sem_t* sem);
+int sthread_sem_trywait(sthread_sem_t* sem);
+int sthread_sem_timedwait(sthread_sem_t* sem, const struct timespec* abs_timeout);
+