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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2009-2012. 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_BASIC_GLOBAL_MEMORY_HPP
#define BOOST_INTERPROCESS_BASIC_GLOBAL_MEMORY_HPP
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/interprocess/detail/config_begin.hpp>
#include <boost/interprocess/detail/workaround.hpp>
#include <boost/interprocess/offset_ptr.hpp>
#include <boost/interprocess/sync/spin/mutex.hpp>
#include <boost/interprocess/sync/spin/recursive_mutex.hpp>
#include <boost/interprocess/detail/managed_memory_impl.hpp>
#include <boost/interprocess/detail/managed_open_or_create_impl.hpp>
#include <boost/interprocess/mem_algo/rbtree_best_fit.hpp>
#include <boost/interprocess/indexes/iset_index.hpp>
#include <boost/interprocess/creation_tags.hpp>
#include <boost/interprocess/permissions.hpp>
namespace boost{
namespace interprocess{
namespace ipcdetail{
struct intermodule_singleton_mutex_family
{
typedef boost::interprocess::ipcdetail::spin_mutex mutex_type;
typedef boost::interprocess::ipcdetail::spin_recursive_mutex recursive_mutex_type;
};
struct intermodule_types
{
//We must use offset_ptr since a loaded DLL can map the singleton holder shared memory
//at a different address than other DLLs or the main executable
typedef rbtree_best_fit<intermodule_singleton_mutex_family, offset_ptr<void> > mem_algo;
template<class Device, bool FileBased>
struct open_or_create
{
typedef managed_open_or_create_impl
<Device, mem_algo::Alignment, FileBased, false> type;
};
};
//we must implement our own managed shared memory to avoid circular dependencies
template<class Device, bool FileBased>
class basic_managed_global_memory
: public basic_managed_memory_impl
< char
, intermodule_types::mem_algo
, iset_index
, intermodule_types::open_or_create<Device, FileBased>::type::ManagedOpenOrCreateUserOffset
>
, private intermodule_types::open_or_create<Device, FileBased>::type
{
#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
typedef typename intermodule_types::template open_or_create<Device, FileBased>::type base2_t;
typedef basic_managed_memory_impl
< char
, intermodule_types::mem_algo
, iset_index
, base2_t::ManagedOpenOrCreateUserOffset
> base_t;
typedef create_open_func<base_t> create_open_func_t;
basic_managed_global_memory *get_this_pointer()
{ return this; }
public:
typedef typename base_t::size_type size_type;
private:
typedef typename base_t::char_ptr_holder_t char_ptr_holder_t;
BOOST_MOVABLE_BUT_NOT_COPYABLE(basic_managed_global_memory)
#endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
public: //functions
basic_managed_global_memory (open_or_create_t open_or_create,
const char *name, size_type size,
const void *addr = 0, const permissions& perm = permissions())
: base_t()
, base2_t(open_or_create, name, size, read_write, addr,
create_open_func_t(get_this_pointer(),
DoOpenOrCreate), perm)
{}
basic_managed_global_memory (open_only_t open_only, const char* name,
const void *addr = 0)
: base_t()
, base2_t(open_only, name, read_write, addr,
create_open_func_t(get_this_pointer(),
DoOpen))
{}
};
} //namespace ipcdetail{
} //namespace interprocess{
} //namespace boost{
#include <boost/interprocess/detail/config_end.hpp>
#endif //#ifndef BOOST_INTERPROCESS_BASIC_GLOBAL_MEMORY_HPP
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