Description

   This routine copies the object name from the read-write lock
   object specified by rwlock to the buffer at the location name.
   Before calling this routine, your program must allocate the
   buffer indicated by name.

   The object name is a C language string and provides an identifier
   that is meaningful to a person debugging a multithreaded
   application. The maximum number of characters in the object name
   is 31.

   If the specified read-write lock object has not been previously
   set with an object name, this routine copies a C language null
   string into the buffer at location name.