// (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)); | |
} | |
template<class CharType> | |
void save(const std::basic_string<CharType> &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 |