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