Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2007-2012. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/interprocess for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP
+#define BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP
+
+#ifndef BOOST_CONFIG_HPP
+#  include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+#include <boost/interprocess/creation_tags.hpp>
+#include <boost/interprocess/detail/type_traits.hpp>
+#include <boost/interprocess/detail/mpl.hpp>
+#include <boost/container/detail/placement_new.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+struct named_creation_functor_no_arg{};
+
+template <class T, class Arg = named_creation_functor_no_arg>
+class named_creation_functor
+{
+   typedef named_creation_functor_no_arg no_arg_t;
+   public:
+   named_creation_functor(create_enum_t type, Arg arg = Arg())
+      :  m_creation_type(type), m_arg(arg){}
+
+   template<class ArgType>
+   void construct(void *address, typename enable_if_c<is_same<ArgType, no_arg_t>::value>::type * = 0) const
+   {  ::new(address, boost_container_new_t())T; }
+
+   template<class ArgType>
+   void construct(void *address, typename enable_if_c<!is_same<ArgType, no_arg_t>::value>::type * = 0) const
+   {  ::new(address, boost_container_new_t())T(m_arg); }
+
+   bool operator()(void *address, std::size_t, bool created) const
+   {
+      switch(m_creation_type){
+         case DoOpen:
+            return true;
+         break;
+         case DoCreate:
+         case DoOpenOrCreate:
+            if(created){
+               construct<Arg>(address);
+            }
+            return true;
+         break;
+
+         default:
+            return false;
+         break;
+      }
+   }
+
+   static std::size_t get_min_size()
+   {  return sizeof(T);  }
+
+   private:
+   create_enum_t m_creation_type;
+   Arg m_arg;
+};
+
+}  //namespace ipcdetail {
+}  //namespace interprocess {
+}  //namespace boost {
+
+#endif   //BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP