Reduce.h

Go to the documentation of this file.

/*****************************************************************************
 * Copyright (c) 2011-2012 The SkelCL Team as listed in CREDITS.txt          *
 * http://skelcl.uni-muenster.de                                             *
 *                                                                           *
 * This file is part of SkelCL.                                              *
 * SkelCL is available under multiple licenses.                              *
 * The different licenses are subject to terms and condition as provided     *
 * in the files specifying the license. See "LICENSE.txt" for details        *
 *                                                                           *
 *****************************************************************************
 *                                                                           *
 * SkelCL is free software: you can redistribute it and/or modify            *
 * it under the terms of the GNU General Public License as published by      *
 * the Free Software Foundation, either version 3 of the License, or         *
 * (at your option) any later version. See "LICENSE-gpl.txt" for details.    *
 *                                                                           *
 * SkelCL is distributed in the hope that it will be useful,                 *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the              *
 * GNU General Public License for more details.                              *
 *                                                                           *
 *****************************************************************************
 *                                                                           *
 * For non-commercial academic use see the license specified in the file     *
 * "LICENSE-academic.txt".                                                   *
 *                                                                           *
 *****************************************************************************
 *                                                                           *
 * If you are interested in other licensing models, including a commercial-  *
 * license, please contact the author at michel.steuwer@uni-muenster.de      *
 *                                                                           *
 *****************************************************************************/
 

#ifndef REDUCE_H_
#define REDUCE_H_

#include <istream>
#include <memory>
#include <string>

#include "Source.h"

#include "detail/Program.h"
#include "detail/Skeleton.h"

namespace skelcl {

template <typename> class Out;
template <typename> class Vector;
namespace detail { class DeviceList; }

template <typename> class Reduce;


template <typename T>
class Reduce<T(T)> : public detail::Skeleton {
public:
  Reduce(const Source& source, const std::string& id = "0",
         const std::string& funcName = "func");

  template <typename... Args>
  Vector<T> operator()(const Vector<T>& input, Args&&... args);

  template <typename... Args>
  Vector<T>& operator()(Out<Vector<T>> output, const Vector<T>& input,
                        Args&&... args);

  std::string source() const;

  std::string func() const;

  std::string id() const;

private:
  void prepareInput(const Vector<T>& input);

  void prepareOutput(Vector<T>& output, const Vector<T>& input,
                     const size_t size);

  template <typename... Args>
  void execute_first_step(const detail::Device& device,
                          const detail::DeviceBuffer& input,
                          detail::DeviceBuffer& output, size_t data_size,
                          size_t global_size, Args&&... args);

  template <typename... Args>
  void execute_second_step(const detail::Device& device,
                           const detail::DeviceBuffer& input,
                           detail::DeviceBuffer& output, size_t data_size,
                           Args&&... args);

  skelcl::detail::Program createPrepareAndBuildProgram();

  std::string _id;

  std::string _funcName;

  std::string _userSource;

  skelcl::detail::Program _program;
};

} // namespace skelcl

#include "detail/ReduceDef.h"

#endif // REDUCE_H_