/usr/include/flann/mpi/client.h is in libflann-dev 1.7.1-4.
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* Software License Agreement (BSD License)
*
* 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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
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* 2. Redistributions in binary form must reproduce the above copyright
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*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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*************************************************************************/
#ifndef MPI_CLIENT_H_
#define MPI_CLIENT_H_
#include <cstdlib>
#include <boost/asio.hpp>
#include <flann/util/matrix.h>
#include <flann/util/params.h>
#include "queries.h"
namespace flann {
namespace mpi {
template<typename ElementType, typename DistanceType>
class Client
{
public:
Client(const std::string& host, const std::string& service)
{
tcp::resolver resolver(io_service_);
tcp::resolver::query query(tcp::v4(), host, service);
iterator_ = resolver.resolve(query);
}
void knnSearch(const flann::Matrix<ElementType>& queries, flann::Matrix<int>& indices, flann::Matrix<DistanceType>& dists, int knn, const SearchParams& params)
{
tcp::socket sock(io_service_);
sock.connect(*iterator_);
Request<ElementType> req;
req.nn = knn;
req.queries = queries;
req.checks = params.checks;
// send request
write_object(sock,req);
Response<DistanceType> resp;
// read response
read_object(sock, resp);
for (size_t i=0;i<indices.rows;++i) {
for (size_t j=0;j<indices.cols;++j) {
indices[i][j] = resp.indices[i][j];
dists[i][j] = resp.dists[i][j];
}
}
}
private:
boost::asio::io_service io_service_;
tcp::resolver::iterator iterator_;
};
} //namespace mpi
} // namespace flann
#endif // MPI_CLIENT_H_
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