ceph/src/boost/boost/flyweight/intermodule_holder.hpp

   1 /* Copyright 2006-2011 Joaquin M Lopez Munoz.
   2  * Distributed under the Boost Software License, Version 1.0.
   3  * (See accompanying file LICENSE_1_0.txt or copy at
   4  * http://www.boost.org/LICENSE_1_0.txt)
   5  *
   6  * See http://www.boost.org/libs/flyweight for library home page.
   7  */
   8
   9 #ifndef BOOST_FLYWEIGHT_INTERMODULE_HOLDER_HPP
  10 #define BOOST_FLYWEIGHT_INTERMODULE_HOLDER_HPP
  11
  12 #if defined(_MSC_VER)
  13 #pragma once
  14 #endif
  15
  16 #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
  17 #include <boost/flyweight/holder_tag.hpp>
  18 #include <boost/flyweight/intermodule_holder_fwd.hpp>
  19 #include <boost/interprocess/detail/intermodule_singleton.hpp>
  20 #include <boost/mpl/aux_/lambda_support.hpp>
  21
  22 /* intermodule_holder_class guarantees a unique instance across all dynamic
  23  * modules of a program.
  24  */
  25
  26 namespace boost{
  27
  28 namespace flyweights{
  29
  30 template<typename C>
  31 struct intermodule_holder_class:
  32   interprocess::ipcdetail::intermodule_singleton<C,true>,
  33   holder_marker
  34 {
  35   typedef intermodule_holder_class type;
  36   BOOST_MPL_AUX_LAMBDA_SUPPORT(1,intermodule_holder_class,(C))
  37 };
  38
  39 /* intermodule_holder_class specifier */
  40
  41 struct intermodule_holder:holder_marker
  42 {
  43   template<typename C>
  44   struct apply
  45   {
  46     typedef intermodule_holder_class<C> type;
  47   };
  48 };
  49
  50 } /* namespace flyweights */
  51
  52 } /* namespace boost */
  53
  54 #endif