+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);
+
+int sthread_gettimeofday(struct timeval* tv);
+unsigned int sthread_sleep(double seconds);
+int sthread_usleep(double seconds);
+
+int sthread_access_begin(void* objaddr, const char* objname, const char* file, int line, const char* function);
+void sthread_access_end(void* objaddr, const char* objname, const char* file, int line, const char* function);
+