Imported Upstream version 1.49.0upstream/1.49.0

1 files changed, 349 insertions, 0 deletions

diff --git a/boost/interprocess/detail/named_proxy.hpp b/boost/interprocess/detail/named_proxy.hpp
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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005-2011. 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_NAMED_PROXY_HPP
+#define BOOST_INTERPROCESS_NAMED_PROXY_HPP
+
+#if (defined _MSC_VER) && (_MSC_VER >= 1200)
+#  pragma once
+#endif
+
+#include <boost/interprocess/detail/config_begin.hpp>
+#include <boost/interprocess/detail/workaround.hpp>
+
+#include <new>
+#include <iterator>
+#include <boost/interprocess/detail/in_place_interface.hpp>
+#include <boost/interprocess/detail/mpl.hpp>
+
+#ifndef BOOST_INTERPROCESS_PERFECT_FORWARDING
+#include <boost/interprocess/detail/preprocessor.hpp> 
+#else
+#include <boost/move/move.hpp>
+#include <boost/interprocess/detail/variadic_templates_tools.hpp>
+#endif   //#ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING
+
+//!\file
+//!Describes a proxy class that implements named allocation syntax.
+
+namespace boost {
+namespace interprocess { 
+namespace ipcdetail {
+
+#ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING
+
+template<class T, bool is_iterator, class ...Args>
+struct CtorNArg : public placement_destroy<T>
+{
+   typedef bool_<is_iterator> IsIterator;
+   typedef CtorNArg<T, is_iterator, Args...> self_t;
+   typedef typename build_number_seq<sizeof...(Args)>::type index_tuple_t;
+
+   self_t& operator++()
+   {
+      this->do_increment(IsIterator(), index_tuple_t());
+      return *this;
+   }
+
+   self_t  operator++(int) {  return ++*this;   *this;  }
+
+   CtorNArg(Args && ...args)
+      :  args_(args...)
+   {}
+
+   virtual void construct_n(void *mem
+                     , std::size_t num
+                     , std::size_t &constructed)
+   {
+      T* memory      = static_cast<T*>(mem);
+      for(constructed = 0; constructed < num; ++constructed){
+         this->construct(memory++, IsIterator(), index_tuple_t());
+         this->do_increment(IsIterator(), index_tuple_t());
+      }
+   }
+
+   private:
+   template<int ...IdxPack>
+   void construct(void *mem, true_, const index_tuple<IdxPack...>&)
+   {  new((void*)mem)T(*boost::forward<Args>(get<IdxPack>(args_))...); }
+
+   template<int ...IdxPack>
+   void construct(void *mem, false_, const index_tuple<IdxPack...>&)
+   {  new((void*)mem)T(boost::forward<Args>(get<IdxPack>(args_))...); }
+
+   template<int ...IdxPack>
+   void do_increment(true_, const index_tuple<IdxPack...>&)
+   {
+      this->expansion_helper(++get<IdxPack>(args_)...);
+   }
+ 
+   template<class ...ExpansionArgs>
+   void expansion_helper(ExpansionArgs &&...)
+   {}
+
+   template<int ...IdxPack>
+   void do_increment(false_, const index_tuple<IdxPack...>&)
+   {}
+
+   tuple<Args&...> args_;
+};                                                                      
+
+//!Describes a proxy class that implements named
+//!allocation syntax.
+template 
+   < class SegmentManager  //segment manager to construct the object
+   , class T               //type of object to build
+   , bool is_iterator      //passing parameters are normal object or iterators?
+   >
+class named_proxy
+{
+   typedef typename SegmentManager::char_type char_type;
+   const char_type *    mp_name;
+   SegmentManager *     mp_mngr;
+   mutable std::size_t  m_num;
+   const bool           m_find;
+   const bool           m_dothrow;
+
+   public:
+   named_proxy(SegmentManager *mngr, const char_type *name, bool find, bool dothrow)
+      :  mp_name(name), mp_mngr(mngr), m_num(1)
+      ,  m_find(find),  m_dothrow(dothrow)
+   {}
+
+   template<class ...Args>
+   T *operator()(Args &&...args) const
+   {  
+      CtorNArg<T, is_iterator, Args...> &&ctor_obj = CtorNArg<T, is_iterator, Args...>
+         (boost::forward<Args>(args)...);
+      return mp_mngr->template 
+         generic_construct<T>(mp_name, m_num, m_find, m_dothrow, ctor_obj);
+   }
+
+   //This operator allows --> named_new("Name")[3]; <-- syntax
+   const named_proxy &operator[](std::size_t num) const
+   {  m_num *= num; return *this;  }
+};
+
+#else //#ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING
+
+//!Function object that makes placement new
+//!without arguments
+template<class T>
+struct Ctor0Arg   :  public placement_destroy<T>
+{
+   typedef Ctor0Arg self_t;
+
+   Ctor0Arg(){}
+
+   self_t& operator++()       {  return *this;  }
+   self_t  operator++(int)    {  return *this;  }
+
+   void construct(void *mem)
+   {  new((void*)mem)T;  }
+
+   virtual void construct_n(void *mem, std::size_t num, std::size_t &constructed)
+   {
+      T* memory = static_cast<T*>(mem);
+      for(constructed = 0; constructed < num; ++constructed)
+         new((void*)memory++)T;
+   }
+};
+
+////////////////////////////////////////////////////////////////
+//    What the macro should generate (n == 2):
+//
+//    template<class T, bool is_iterator, class P1, class P2>
+//    struct Ctor2Arg
+//      :  public placement_destroy<T>
+//    {
+//       typedef bool_<is_iterator> IsIterator;
+//       typedef Ctor2Arg self_t;
+//
+//       void do_increment(false_)
+//       { ++m_p1; ++m_p2;  }
+//
+//       void do_increment(true_){}
+//
+//       self_t& operator++()
+//       {
+//          this->do_increment(IsIterator());
+//          return *this;
+//       }
+//
+//       self_t  operator++(int) {  return ++*this;   *this;  }
+//
+//       Ctor2Arg(const P1 &p1, const P2 &p2)
+//          : p1((P1 &)p_1), p2((P2 &)p_2) {}
+//
+//       void construct(void *mem)
+//       {  new((void*)object)T(m_p1, m_p2); }
+//
+//       virtual void construct_n(void *mem
+//                                , std::size_t num
+//                                , std::size_t &constructed)
+//       {
+//          T* memory      = static_cast<T*>(mem);
+//          for(constructed = 0; constructed < num; ++constructed){
+//             this->construct(memory++, IsIterator());
+//             this->do_increment(IsIterator());
+//          }
+//       }
+//
+//       private:
+//       void construct(void *mem, true_)
+//       {  new((void*)mem)T(*m_p1, *m_p2); }
+//                                                                           
+//       void construct(void *mem, false_)
+//       {  new((void*)mem)T(m_p1, m_p2); }
+//
+//       P1 &m_p1; P2 &m_p2;
+//    };
+////////////////////////////////////////////////////////////////
+
+//Note:
+//We define template parameters as const references to
+//be able to bind temporaries. After that we will un-const them.
+//This cast is ugly but it is necessary until "perfect forwarding"
+//is achieved in C++0x. Meanwhile, if we want to be able to
+//bind lvalues with non-const references, we have to be ugly
+#define BOOST_PP_LOCAL_MACRO(n)                                            \
+   template<class T, bool is_iterator, BOOST_PP_ENUM_PARAMS(n, class P) >  \
+   struct BOOST_PP_CAT(BOOST_PP_CAT(Ctor, n), Arg)                         \
+      :  public placement_destroy<T>                                       \
+   {                                                                       \
+      typedef bool_<is_iterator> IsIterator;                               \
+      typedef BOOST_PP_CAT(BOOST_PP_CAT(Ctor, n), Arg) self_t;             \
+                                                                           \
+      void do_increment(true_)                                             \
+         { BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_INC, _); }         \
+                                                                           \
+      void do_increment(false_){}                                          \
+                                                                           \
+      self_t& operator++()                                                 \
+      {                                                                    \
+         this->do_increment(IsIterator());                                 \
+         return *this;                                                     \
+      }                                                                    \
+                                                                           \
+      self_t  operator++(int) {  return ++*this;   *this;  }               \
+                                                                           \
+      BOOST_PP_CAT(BOOST_PP_CAT(Ctor, n), Arg)                             \
+         ( BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_LIST, _) )        \
+         : BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_INIT, _) {}       \
+                                                                           \
+      virtual void construct_n(void *mem                                   \
+                        , std::size_t num                                  \
+                        , std::size_t &constructed)                        \
+      {                                                                    \
+         T* memory      = static_cast<T*>(mem);                            \
+         for(constructed = 0; constructed < num; ++constructed){           \
+            this->construct(memory++, IsIterator());                       \
+            this->do_increment(IsIterator());                              \
+         }                                                                 \
+      }                                                                    \
+                                                                           \
+      private:                                                             \
+      void construct(void *mem, true_)                                     \
+      {                                                                    \
+         new((void*)mem) T                                                 \
+         (BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_MEMBER_IT_FORWARD, _));   \
+      }                                                                    \
+                                                                           \
+      void construct(void *mem, false_)                                    \
+      {                                                                    \
+         new((void*)mem) T                                                 \
+            (BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_MEMBER_FORWARD, _));   \
+      }                                                                    \
+                                                                           \
+      BOOST_PP_REPEAT(n, BOOST_INTERPROCESS_PP_PARAM_DEFINE, _)            \
+   };                                                                      \
+//!
+#define BOOST_PP_LOCAL_LIMITS (1, BOOST_INTERPROCESS_MAX_CONSTRUCTOR_PARAMETERS)
+#include BOOST_PP_LOCAL_ITERATE()
+
+//!Describes a proxy class that implements named
+//!allocation syntax.
+template 
+   < class SegmentManager  //segment manager to construct the object
+   , class T               //type of object to build
+   , bool is_iterator      //passing parameters are normal object or iterators?
+   >
+class named_proxy
+{
+   typedef typename SegmentManager::char_type char_type;
+   const char_type *    mp_name;
+   SegmentManager *     mp_mngr;
+   mutable std::size_t  m_num;
+   const bool           m_find;
+   const bool           m_dothrow;
+
+   public:
+   named_proxy(SegmentManager *mngr, const char_type *name, bool find, bool dothrow)
+      :  mp_name(name), mp_mngr(mngr), m_num(1)
+      ,  m_find(find),  m_dothrow(dothrow)
+   {}
+
+   //!makes a named allocation and calls the
+   //!default constructor
+   T *operator()() const
+   {  
+      Ctor0Arg<T> ctor_obj;
+      return mp_mngr->template 
+         generic_construct<T>(mp_name, m_num, m_find, m_dothrow, ctor_obj);
+   }
+   //!
+
+   #define BOOST_PP_LOCAL_MACRO(n)                                               \
+      template<BOOST_PP_ENUM_PARAMS(n, class P)>                                 \
+      T *operator()(BOOST_PP_ENUM (n, BOOST_INTERPROCESS_PP_PARAM_LIST, _)) const\
+      {                                                                          \
+         typedef BOOST_PP_CAT(BOOST_PP_CAT(Ctor, n), Arg)                        \
+            <T, is_iterator, BOOST_PP_ENUM_PARAMS(n, P)>                         \
+            ctor_obj_t;                                                          \
+         ctor_obj_t ctor_obj                                                     \
+            (BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_FORWARD, _));          \
+         return mp_mngr->template generic_construct<T>                           \
+            (mp_name, m_num, m_find, m_dothrow, ctor_obj);                       \
+      }                                                                          \
+   //!
+
+   #define BOOST_PP_LOCAL_LIMITS ( 1, BOOST_INTERPROCESS_MAX_CONSTRUCTOR_PARAMETERS )
+   #include BOOST_PP_LOCAL_ITERATE()
+
+   ////////////////////////////////////////////////////////////////////////
+   //             What the macro should generate (n == 2)
+   ////////////////////////////////////////////////////////////////////////
+   //
+   // template <class P1, class P2>
+   // T *operator()(P1 &p1, P2 &p2) const 
+   // {
+   //    typedef Ctor2Arg
+   //       <T, is_iterator, P1, P2>
+   //       ctor_obj_t;
+   //    ctor_obj_t ctor_obj(p1, p2);
+   //
+   //    return mp_mngr->template generic_construct<T>
+   //       (mp_name, m_num, m_find, m_dothrow, ctor_obj);
+   // }
+   //
+   //////////////////////////////////////////////////////////////////////////
+
+   //This operator allows --> named_new("Name")[3]; <-- syntax
+   const named_proxy &operator[](std::size_t num) const
+      {  m_num *= num; return *this;  }
+};
+
+#endif   //#ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING
+
+}}}   //namespace boost { namespace interprocess { namespace ipcdetail {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif //#ifndef BOOST_INTERPROCESS_NAMED_PROXY_HPP