-XBT_PUBLIC void sg_exec_wait(sg_exec_t exec);
-XBT_PUBLIC void sg_exec_wait_for(sg_exec_t exec, double timeout);
+XBT_PUBLIC void sg_exec_cancel(sg_exec_t exec);
+XBT_PUBLIC int sg_exec_test(sg_exec_t exec);
+XBT_PUBLIC sg_error_t sg_exec_wait(sg_exec_t exec);
+XBT_PUBLIC sg_error_t sg_exec_wait_for(sg_exec_t exec, double timeout);
+XBT_PUBLIC int sg_exec_wait_any_for(sg_exec_t* execs, size_t count, double timeout);
+XBT_PUBLIC int sg_exec_wait_any(sg_exec_t* execs, size_t count);