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Editing: managed_external_buffer.hpp
////////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2005-2012. 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_MANAGED_EXTERNAL_BUFFER_HPP #define BOOST_INTERPROCESS_MANAGED_EXTERNAL_BUFFER_HPP #ifndef BOOST_CONFIG_HPP # include <boost/config.hpp> #endif # #if defined(BOOST_HAS_PRAGMA_ONCE) # pragma once #endif #include <boost/interprocess/detail/config_begin.hpp> #include <boost/interprocess/detail/workaround.hpp> #include <boost/interprocess/creation_tags.hpp> #include <boost/interprocess/detail/managed_memory_impl.hpp> #include <boost/move/utility_core.hpp> #include <boost/assert.hpp> //These includes needed to fulfill default template parameters of //predeclarations in interprocess_fwd.hpp #include <boost/interprocess/mem_algo/rbtree_best_fit.hpp> #include <boost/interprocess/sync/mutex_family.hpp> #include <boost/interprocess/indexes/iset_index.hpp> //!\file //!Describes a named user memory allocation user class. namespace boost { namespace interprocess { //!A basic user memory named object creation class. Inherits all //!basic functionality from //!basic_managed_memory_impl<CharType, AllocationAlgorithm, IndexType>*/ template < class CharType, class AllocationAlgorithm, template<class IndexConfig> class IndexType > class basic_managed_external_buffer : public ipcdetail::basic_managed_memory_impl <CharType, AllocationAlgorithm, IndexType> { #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) typedef ipcdetail::basic_managed_memory_impl <CharType, AllocationAlgorithm, IndexType> base_t; BOOST_MOVABLE_BUT_NOT_COPYABLE(basic_managed_external_buffer) #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED public: typedef typename base_t::size_type size_type; //!Default constructor. Does nothing. //!Useful in combination with move semantics basic_managed_external_buffer() {} //!Creates and places the segment manager. This can throw basic_managed_external_buffer (create_only_t, void *addr, size_type size) { //Check if alignment is correct BOOST_ASSERT((0 == (((std::size_t)addr) & (AllocationAlgorithm::Alignment - size_type(1u))))); if(!base_t::create_impl(addr, size)){ throw interprocess_exception("Could not initialize buffer in basic_managed_external_buffer constructor"); } } //!Creates and places the segment manager. This can throw basic_managed_external_buffer (open_only_t, void *addr, size_type size) { //Check if alignment is correct BOOST_ASSERT((0 == (((std::size_t)addr) & (AllocationAlgorithm::Alignment - size_type(1u))))); if(!base_t::open_impl(addr, size)){ throw interprocess_exception("Could not initialize buffer in basic_managed_external_buffer constructor"); } } //!Moves the ownership of "moved"'s managed memory to *this. Does not throw basic_managed_external_buffer(BOOST_RV_REF(basic_managed_external_buffer) moved) { this->swap(moved); } //!Moves the ownership of "moved"'s managed memory to *this. Does not throw basic_managed_external_buffer &operator=(BOOST_RV_REF(basic_managed_external_buffer) moved) { basic_managed_external_buffer tmp(boost::move(moved)); this->swap(tmp); return *this; } void grow(size_type extra_bytes) { base_t::grow(extra_bytes); } //!Swaps the ownership of the managed heap memories managed by *this and other. //!Never throws. void swap(basic_managed_external_buffer &other) { base_t::swap(other); } }; #ifdef BOOST_INTERPROCESS_DOXYGEN_INVOKED //!Typedef for a default basic_managed_external_buffer //!of narrow characters typedef basic_managed_external_buffer <char ,rbtree_best_fit<null_mutex_family> ,iset_index> managed_external_buffer; //!Typedef for a default basic_managed_external_buffer //!of wide characters typedef basic_managed_external_buffer <wchar_t ,rbtree_best_fit<null_mutex_family> ,iset_index> wmanaged_external_buffer; #endif //#ifdef BOOST_INTERPROCESS_DOXYGEN_INVOKED } //namespace interprocess { } //namespace boost { #include <boost/interprocess/detail/config_end.hpp> #endif //BOOST_INTERPROCESS_MANAGED_EXTERNAL_BUFFER_HPP
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