-XBT_PUBLIC(void) xbt_cond_wait(xbt_cond_t cond, xbt_mutex_t mutex);
-/** @brief Blocks onto the given condition variable, but only for the given amount of time. a timeout exception is
- * raised if it was impossible to acquire it in the given time frame */
-XBT_PUBLIC(void) xbt_cond_timedwait(xbt_cond_t cond, xbt_mutex_t mutex, double delay);
+XBT_PUBLIC void xbt_cond_wait(xbt_cond_t cond, xbt_mutex_t mutex);
+/** @brief Blocks onto the given condition variable, but only for the given amount of time.
+ * @return 0 on success, 1 on timeout */
+XBT_PUBLIC int xbt_cond_timedwait(xbt_cond_t cond, xbt_mutex_t mutex, double delay);