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104 lines
2.6 KiB
104 lines
2.6 KiB
// (C) Copyright 2005-2007 Matthias Troyer |
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// Use, modification and distribution is subject to the Boost Software |
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// Authors: Matthias Troyer |
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#ifndef BOOST_MPI_BINARY_BUFFER_OPRIMITIVE_HPP |
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#define BOOST_MPI_BINARY_BUFFER_OPRIMITIVE_HPP |
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#include <mpi.h> |
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#include <iostream> |
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#include <cstddef> // size_t |
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#include <boost/config.hpp> |
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#include <boost/serialization/array.hpp> |
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#include <boost/serialization/is_bitwise_serializable.hpp> |
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#include <boost/assert.hpp> |
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#include <boost/mpl/assert.hpp> |
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#include <vector> |
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#include <boost/mpi/allocator.hpp> |
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#include <boost/mpl/always.hpp> |
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#include <boost/type_traits/remove_const.hpp> |
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namespace boost { namespace mpi { |
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/// serialization using binary copy into a buffer |
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class BOOST_MPI_DECL binary_buffer_oprimitive |
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{ |
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public: |
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/// the type of the buffer into which the data is packed upon serialization |
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typedef std::vector<char, allocator<char> > buffer_type; |
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binary_buffer_oprimitive(buffer_type & b, MPI_Comm const &) |
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: buffer_(b) |
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{ |
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} |
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void const * address() const |
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{ |
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return &buffer_.front(); |
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} |
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const std::size_t& size() const |
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{ |
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return size_ = buffer_.size(); |
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} |
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void save_binary(void const *address, std::size_t count) |
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{ |
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save_impl(address,count); |
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} |
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// fast saving of arrays |
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template<class T> |
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void save_array(serialization::array<T> const& x, unsigned int /* file_version */) |
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{ |
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BOOST_MPL_ASSERT((serialization::is_bitwise_serializable<BOOST_DEDUCED_TYPENAME remove_const<T>::type>)); |
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if (x.count()) |
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save_impl(x.address(), x.count()*sizeof(T)); |
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} |
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template<class T> |
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void save(serialization::array<T> const& x) |
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{ |
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save_array(x,0u); |
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} |
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typedef serialization::is_bitwise_serializable<mpl::_1> use_array_optimization; |
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// default saving of primitives. |
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template<class T> |
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void save(const T & t) |
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{ |
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BOOST_MPL_ASSERT((serialization::is_bitwise_serializable<BOOST_DEDUCED_TYPENAME remove_const<T>::type>)); |
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save_impl(&t, sizeof(T)); |
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} |
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template<class CharType> |
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void save(const std::basic_string<CharType> &s) |
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{ |
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unsigned int l = static_cast<unsigned int>(s.size()); |
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save(l); |
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save_impl(s.data(),s.size()); |
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} |
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private: |
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void save_impl(void const * p, int l) |
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{ |
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char const* ptr = reinterpret_cast<char const*>(p); |
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buffer_.insert(buffer_.end(),ptr,ptr+l); |
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} |
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buffer_type& buffer_; |
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mutable std::size_t size_; |
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}; |
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} } // end namespace boost::mpi |
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#endif // BOOST_MPI_BINARY_BUFFER_OPRIMITIVE_HPP
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