Reuse the session-duration function descriptor

To reuse the session-duration function descriptor in another UDR, you:

• Get the address of the PER_SESSION named-memory block that contains the function descriptor.
• Extract the address of the session-duration function descriptor from the named-memory block.
• Pass the session-duration function descriptor to the mi_routine_exec() function to execute the associated UDR.

The following code fragment shows how other UDRs can access the fdesc function descriptor until the session ends:

MI_CONNECTION *sess_conn;
MI_FUNC_DESC **fdesc;
mi_integer status, error;
mi_integer i = 55;
mi_char ch = 'c';
MI_DATUM *value;

/* Obtain a public and session-duration connection 
 * descriptor 
 */
conn = mi_open(NULL, NULL, NULL);
sess_conn = mi_get_session_connection();

/* Obtain the address of the 'funcptr_blk' named-memory block,
 * which contains the session-duration function descriptor
 */
if ( (status = mi_named_get("funcptr_blk", PER_SESSION, 
      (void **)&fdesc)) != MI_OK )
   {
   /* Handle error */
   ...
   }

/* Execute the UDR associated with the 'fdesc' 
 * session-duration function descriptor
 */
value = mi_routine_exec(conn, *fdesc, &error, i, c);