You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
108 lines
3.6 KiB
108 lines
3.6 KiB
////////////////////////////////////////////////////////////////////////////// |
|
// |
|
// (C) Copyright Ion Gaztanaga 2005-2009. 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 |
|
|
|
#if (defined _MSC_VER) && (_MSC_VER >= 1200) |
|
# 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/interprocess/detail/move.hpp> |
|
#include <boost/assert.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> |
|
{ |
|
/// @cond |
|
typedef ipcdetail::basic_managed_memory_impl |
|
<CharType, AllocationAlgorithm, IndexType> base_t; |
|
BOOST_MOVABLE_BUT_NOT_COPYABLE(basic_managed_external_buffer) |
|
/// @endcond |
|
|
|
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::interprocess::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); } |
|
}; |
|
|
|
} //namespace interprocess { |
|
} //namespace boost { |
|
|
|
#include <boost/interprocess/detail/config_end.hpp> |
|
|
|
#endif //BOOST_INTERPROCESS_MANAGED_EXTERNAL_BUFFER_HPP |
|
|
|
|