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+//////////////////////////////////////////////////////////////////////////////
+//
+// (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_MAPPED_FILE_HPP
+#define BOOST_INTERPROCESS_MANAGED_MAPPED_FILE_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/detail/managed_open_or_create_impl.hpp>
+#include <boost/interprocess/detail/managed_memory_impl.hpp>
+#include <boost/interprocess/creation_tags.hpp>
+#include <boost/interprocess/detail/file_wrapper.hpp>
+#include <boost/move/utility_core.hpp>
+#include <boost/interprocess/file_mapping.hpp>
+#include <boost/interprocess/permissions.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>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+template<class AllocationAlgorithm>
+struct mfile_open_or_create
+{
+ typedef ipcdetail::managed_open_or_create_impl
+ < file_wrapper, AllocationAlgorithm::Alignment, true, false> type;
+};
+
+} //namespace ipcdetail {
+
+//!A basic mapped file named object creation class. Initializes the
+//!mapped file. 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_mapped_file
+ #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+ : public ipcdetail::basic_managed_memory_impl
+ <CharType, AllocationAlgorithm, IndexType
+ ,ipcdetail::mfile_open_or_create<AllocationAlgorithm>::type::ManagedOpenOrCreateUserOffset>
+ #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+{
+ #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+ public:
+ typedef ipcdetail::basic_managed_memory_impl
+ <CharType, AllocationAlgorithm, IndexType,
+ ipcdetail::mfile_open_or_create<AllocationAlgorithm>::type::ManagedOpenOrCreateUserOffset> base_t;
+ typedef ipcdetail::file_wrapper device_type;
+
+ private:
+
+ typedef ipcdetail::create_open_func<base_t> create_open_func_t;
+
+ basic_managed_mapped_file *get_this_pointer()
+ { return this; }
+
+ private:
+ typedef typename base_t::char_ptr_holder_t char_ptr_holder_t;
+ BOOST_MOVABLE_BUT_NOT_COPYABLE(basic_managed_mapped_file)
+ #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+
+ public: //functions
+
+ //!Unsigned integral type enough to represent
+ //!the size of a basic_managed_mapped_file.
+ typedef typename BOOST_INTERPROCESS_IMPDEF(base_t::size_type) size_type;
+
+ //!Creates mapped file and creates and places the segment manager.
+ //!This can throw.
+ basic_managed_mapped_file()
+ {}
+
+ //!Creates mapped file and creates and places the segment manager.
+ //!This can throw.
+ basic_managed_mapped_file(create_only_t, const char *name,
+ size_type size, const void *addr = 0, const permissions &perm = permissions())
+ : m_mfile(create_only, name, size, read_write, addr,
+ create_open_func_t(get_this_pointer(), ipcdetail::DoCreate), perm)
+ {}
+
+ //!Creates mapped file 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_mapped_file (open_or_create_t,
+ const char *name, size_type size,
+ const void *addr = 0, const permissions &perm = permissions())
+ : m_mfile(open_or_create, name, size, read_write, addr,
+ create_open_func_t(get_this_pointer(),
+ ipcdetail::DoOpenOrCreate), perm)
+ {}
+
+ //!Connects to a created mapped file and its segment manager.
+ //!This can throw.
+ basic_managed_mapped_file (open_only_t, const char* name,
+ const void *addr = 0)
+ : m_mfile(open_only, name, read_write, addr,
+ create_open_func_t(get_this_pointer(),
+ ipcdetail::DoOpen))
+ {}
+
+ //!Connects to a created mapped file and its segment manager
+ //!in copy_on_write mode.
+ //!This can throw.
+ basic_managed_mapped_file (open_copy_on_write_t, const char* name,
+ const void *addr = 0)
+ : m_mfile(open_only, name, copy_on_write, addr,
+ create_open_func_t(get_this_pointer(),
+ ipcdetail::DoOpen))
+ {}
+
+ //!Connects to a created mapped file and its segment manager
+ //!in read-only mode.
+ //!This can throw.
+ basic_managed_mapped_file (open_read_only_t, const char* name,
+ const void *addr = 0)
+ : m_mfile(open_only, name, read_only, addr,
+ create_open_func_t(get_this_pointer(),
+ ipcdetail::DoOpen))
+ {}
+
+ //!Moves the ownership of "moved"'s managed memory to *this.
+ //!Does not throw
+ basic_managed_mapped_file(BOOST_RV_REF(basic_managed_mapped_file) moved)
+ {
+ this->swap(moved);
+ }
+
+ //!Moves the ownership of "moved"'s managed memory to *this.
+ //!Does not throw
+ basic_managed_mapped_file &operator=(BOOST_RV_REF(basic_managed_mapped_file) moved)
+ {
+ basic_managed_mapped_file tmp(boost::move(moved));
+ this->swap(tmp);
+ return *this;
+ }
+
+ //!Destroys *this and indicates that the calling process is finished using
+ //!the resource. The destructor function will deallocate
+ //!any system resources allocated by the system for use by this process for
+ //!this resource. The resource can still be opened again calling
+ //!the open constructor overload. To erase the resource from the system
+ //!use remove().
+ ~basic_managed_mapped_file()
+ {}
+
+ //!Swaps the ownership of the managed mapped memories managed by *this and other.
+ //!Never throws.
+ void swap(basic_managed_mapped_file &other)
+ {
+ base_t::swap(other);
+ m_mfile.swap(other.m_mfile);
+ }
+
+ //!Flushes cached data to file.
+ //!Never throws
+ bool flush()
+ { return m_mfile.flush(); }
+
+ //!Tries to resize mapped file so that we have room for
+ //!more objects.
+ //!
+ //!This function is not synchronized so no other thread or process should
+ //!be reading or writing the file
+ static bool grow(const char *filename, size_type extra_bytes)
+ {
+ return base_t::template grow
+ <basic_managed_mapped_file>(filename, extra_bytes);
+ }
+
+ //!Tries to resize mapped file to minimized the size of the file.
+ //!
+ //!This function is not synchronized so no other thread or process should
+ //!be reading or writing the file
+ static bool shrink_to_fit(const char *filename)
+ {
+ return base_t::template shrink_to_fit
+ <basic_managed_mapped_file>(filename);
+ }
+
+ #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+
+ //!Tries to find a previous named allocation address. Returns a memory
+ //!buffer and the object count. If not found returned pointer is 0.
+ //!Never throws.
+ template <class T>
+ std::pair<T*, size_type> find (char_ptr_holder_t name)
+ {
+ if(m_mfile.get_mapped_region().get_mode() == read_only){
+ return base_t::template find_no_lock<T>(name);
+ }
+ else{
+ return base_t::template find<T>(name);
+ }
+ }
+
+ private:
+ typename ipcdetail::mfile_open_or_create<AllocationAlgorithm>::type m_mfile;
+ #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+};
+
+#ifdef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+
+//!Typedef for a default basic_managed_mapped_file
+//!of narrow characters
+typedef basic_managed_mapped_file
+ <char
+ ,rbtree_best_fit<mutex_family>
+ ,iset_index>
+managed_mapped_file;
+
+//!Typedef for a default basic_managed_mapped_file
+//!of wide characters
+typedef basic_managed_mapped_file
+ <wchar_t
+ ,rbtree_best_fit<mutex_family>
+ ,iset_index>
+wmanaged_mapped_file;
+
+#endif //#ifdef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+
+} //namespace interprocess {
+} //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif //BOOST_INTERPROCESS_MANAGED_MAPPED_FILE_HPP