note
   description:
      "."
   copyright:
      "[
               Copyright (C) 2008-2017: Paolo Redaelli

               This library is free software; you can redistribute it and/or
               modify it under the terms of the GNU Lesser General Public License
               as published by the Free Software Foundation; either version 2.1 of
               the License, or (at your option) any later version.

               This library is distributed in the hope that it will be useful, but
               WITHOUT ANY WARRANTY; without even the implied warranty of
               MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
               Lesser General Public License for more details.

               You should have received a copy of the GNU Lesser General Public
               License along with this library; if not, write to the Free Software
               Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
               02110-1301 USA
         ]"
deferred class GLOBALLY_CACHED
   -- A wrapper for an globally cached object. Until disposed by Eiffel the
   -- wrapper registered in wrappers dictionary will be the one and only
   -- wrapper linked to the given address pointer.

inherit
   WRAPPER
      undefine fill_tagged_out_memory
      redefine from_external_pointer
      end

insert
   GLOBAL_CACHE

feature {WRAPPER, WRAPPER_HANDLER} -- Implementation
   from_external_pointer (a_ptr: POINTER)
      do
         Precursor(a_ptr)
         wrappers.put(Current, a_ptr)
      end

feature {}
   dispose
      do
         wrappers.remove(handle)
      end

invariant
   stored: wrappers.has(handle)

end -- class GLOBALLY_CACHED