source: branches/2886_SymRegGrammarEnumeration/ExpressionClustering/flann/include/flann/mpi/queries.h @ 15840

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 * Copyright 2008-2011  Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
 * Copyright 2008-2011  David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
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#ifndef MPI_QUERIES_H_
#define MPI_QUERIES_H_

#include <flann/mpi/matrix.h>
#include <boost/archive/binary_iarchive.hpp>
#include <boost/archive/binary_oarchive.hpp>
#include <boost/asio.hpp>

namespace flann
{

template<typename T>
struct Request
{
  flann::Matrix<T> queries;
  int nn;
  int checks;

  template<typename Archive>
  void serialize(Archive& ar, const unsigned int version)
  {
    ar & queries & nn & checks;
  }
};

template<typename T>
struct Response
{
  flann::Matrix<int> indices;
  flann::Matrix<T> dists;

  template<typename Archive>
  void serialize(Archive& ar, const unsigned int version)
  {
    ar & indices & dists;
  }
};


using boost::asio::ip::tcp;

template <typename T>
void read_object(tcp::socket& sock, T& val)
{
  uint32_t size;
  boost::asio::read(sock, boost::asio::buffer(&size, sizeof(size)));
  size = ntohl(size);

  boost::asio::streambuf archive_stream;
  boost::asio::read(sock, archive_stream, boost::asio::transfer_at_least(size));

  boost::archive::binary_iarchive archive(archive_stream);
  archive >> val;
}

template <typename T>
void write_object(tcp::socket& sock, const T& val)
{
  boost::asio::streambuf archive_stream;
  boost::archive::binary_oarchive archive(archive_stream);
  archive << val;

  uint32_t size = archive_stream.size();
  size = htonl(size);
  boost::asio::write(sock, boost::asio::buffer(&size, sizeof(size)));
  boost::asio::write(sock, archive_stream);

}

}



#endif /* MPI_QUERIES_H_ */