+void segment_manager_detach_fifo (segment_manager_t * sm, svm_fifo_t * f);
+void segment_manager_attach_fifo (segment_manager_t * sm, svm_fifo_t * f,
+ session_t * s);
+
+void segment_manager_set_watermarks (segment_manager_t * sm,
+ u8 high_watermark, u8 low_watermark);