threadData.h

Go to the documentation of this file.

/****************************************************************************
 *   This file is part of the aGrUM/pyAgrum library.                        *
 *                                                                          *
 *   Copyright (c) 2005-2025 by                                             *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
 *                                                                          *
 *   The aGrUM/pyAgrum library is free software; you can redistribute it    *
 *   and/or modify it under the terms of either :                           *
 *                                                                          *
 *    - the GNU Lesser General Public License as published by               *
 *      the Free Software Foundation, either version 3 of the License,      *
 *      or (at your option) any later version,                              *
 *    - the MIT license (MIT),                                              *
 *    - or both in dual license, as here.                                   *
 *                                                                          *
 *   (see https://agrum.gitlab.io/articles/dual-licenses-lgplv3mit.html)    *
 *                                                                          *
 *   This aGrUM/pyAgrum library is distributed in the hope that it will be  *
 *   useful, but WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,          *
 *   INCLUDING BUT NOT LIMITED TO THE WARRANTIES MERCHANTABILITY or FITNESS *
 *   FOR A PARTICULAR PURPOSE  AND NONINFRINGEMENT. IN NO EVENT SHALL THE   *
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,        *
 *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR  *
 *   OTHER DEALINGS IN THE SOFTWARE.                                        *
 *                                                                          *
 *   See LICENCES for more details.                                         *
 *                                                                          *
 *   SPDX-FileCopyrightText: Copyright 2005-2025                            *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
 *   SPDX-License-Identifier: LGPL-3.0-or-later OR MIT                      *
 *                                                                          *
 *   Contact  : info_at_agrum_dot_org                                       *
 *   homepage : http://agrum.gitlab.io                                      *
 *   gitlab   : https://gitlab.com/agrumery/agrum                           *
 *                                                                          *
 ****************************************************************************/
 

#ifndef GUM_THREAD_DATA_H
#define GUM_THREAD_DATA_H
 
#include <new>
 
#include <agrum/agrum.h>
 
#include <type_traits>
 
namespace gum {

  template < typename T_DATA >
  // @TODO: for C++17, replace by
  // alignas(std::hardware_destructive_interference_size)
  struct alignas(128) ThreadData {
    using data_type = std::conditional< std::is_scalar< T_DATA >::value, T_DATA, T_DATA& >;
 
    // ##########################################################################
    // ##########################################################################

    ThreadData(const T_DATA& theData) : data(theData) {}

    ThreadData(T_DATA&& theData) : data(std::move(theData)) {}

    ThreadData(const ThreadData< T_DATA >& from) : data(from.data) {}

    ThreadData(ThreadData< T_DATA >&& from) : data(std::move(from.data)) {}

    ~ThreadData() {}

 
    // ##########################################################################
    // ##########################################################################


    ThreadData< T_DATA >& operator=(const ThreadData< T_DATA >& from) {
      data = from.data;
      return *this;
    }

    ThreadData< T_DATA >& operator=(ThreadData< T_DATA >&& from) {
      data = std::move(from.data);
      return *this;
    }

    bool operator==(const ThreadData< T_DATA >& from) { return data == from.data; }

    bool operator==(const T_DATA& from) { return data == from; }

    bool operator!=(const ThreadData< T_DATA >& from) { return data != from.data; }

    bool operator!=(const T_DATA& from) { return data != from; }

 
    // ##########################################################################
    // ##########################################################################


    data_type operator*() { return data; }
 
    using data_pointer =
        typename std::conditional< std::is_pointer< T_DATA >::value,
                                   T_DATA,
                                   typename std::add_pointer< T_DATA >::type >::type;
 
    template < typename X = T_DATA >
    std::enable_if_t< std::is_pointer< X >::value, data_pointer > operator->() {
      return data;
    }
 
    template < typename X = T_DATA >
    std::enable_if_t< !std::is_pointer< X >::value, data_pointer > operator->() {
      return &data;
    }

    T_DATA data;
  };
 
 
} /* namespace gum */
 
#endif /* GUM_THREAD_DATA_H */