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managed_windows_shared_memory.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\interprocess\managed_windows_shared_memory.hpp
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////////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2005-2008. 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_WINDOWS_SHARED_MEMORY_HPP #define BOOST_INTERPROCESS_MANAGED_WINDOWS_SHARED_MEMORY_HPP #if (defined _MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif #include
#include
#include
#include
#include
#include
#include
//!\file //!Describes a named shared memory object allocation user class. namespace boost { namespace interprocess { //!A basic managed windows shared memory creation class. Initializes the //!shared memory segment. Inherits all basic functionality from //!basic_managed_memory_impl
//!Unlike basic_managed_shared_memory, it has //!no kernel persistence and the shared memory is destroyed //!when all processes destroy all their windows_shared_memory //!objects and mapped regions for the same shared memory //!or the processes end/crash. //! //!Warning: basic_managed_windows_shared_memory and //!basic_managed_shared_memory can't communicate between them. template < class CharType, class AllocationAlgorithm, template
class IndexType > class basic_managed_windows_shared_memory : public detail::basic_managed_memory_impl
::ManagedOpenOrCreateUserOffset> { /// @cond private: typedef detail::basic_managed_memory_impl
::ManagedOpenOrCreateUserOffset> base_t; typedef detail::create_open_func
create_open_func_t; basic_managed_windows_shared_memory *get_this_pointer() { return this; } /// @endcond public: //functions //!Creates shared memory and creates and places the segment manager. //!This can throw. basic_managed_windows_shared_memory (create_only_t create_only, const char *name, std::size_t size, const void *addr = 0) : m_wshm(create_only, name, size, read_write, addr, create_open_func_t(get_this_pointer(), detail::DoCreate)) {} //!Creates shared memory and creates and places the segment manager if //!segment was not created. If segment was created it connects to the //!segment. //!This can throw. basic_managed_windows_shared_memory (open_or_create_t open_or_create, const char *name, std::size_t size, const void *addr = 0) : m_wshm(open_or_create, name, size, read_write, addr, create_open_func_t(get_this_pointer(), detail::DoOpenOrCreate)) {} //!Connects to a created shared memory and it's the segment manager. //!Never throws. basic_managed_windows_shared_memory (open_only_t open_only, const char* name, const void *addr = 0) : m_wshm(open_only, name, read_write, addr, create_open_func_t(get_this_pointer(), detail::DoOpen)) {} //!Moves the ownership of "moved"'s managed memory to *this. //!Does not throw #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE basic_managed_windows_shared_memory (detail::moved_object
&moved) { this->swap(moved.get()); } #else basic_managed_windows_shared_memory(basic_managed_windows_shared_memory &&moved) { this->swap(moved); } #endif //!Moves the ownership of "moved"'s managed memory to *this. //!Does not throw #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE basic_managed_windows_shared_memory &operator= (detail::moved_object
&moved) { this->swap(moved.get()); return *this; } #else basic_managed_windows_shared_memory &operator= (basic_managed_windows_shared_memory &&moved) { this->swap(moved); return *this; } #endif //!Destroys *this and indicates that the calling process is finished using //!the resource. All mapped regions are still valid after //!destruction. When all mapped regions and basic_managed_windows_shared_memory //!objects referring the shared memory are destroyed, the //!operating system will destroy the shared memory. ~basic_managed_windows_shared_memory() {} //!Swaps the ownership of the managed mapped memories managed by *this and other. //!Never throws. void swap(basic_managed_windows_shared_memory &other) { base_t::swap(other); m_wshm.swap(other.m_wshm); } /// @cond private: detail::managed_open_or_create_impl
m_wshm; /// @endcond }; } //namespace interprocess { } //namespace boost { #include
#endif //BOOST_INTERPROCESS_MANAGED_WINDOWS_SHARED_MEMORY_HPP
managed_windows_shared_memory.hpp
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