threadData.h

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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
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#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);

    ThreadData(T_DATA&& theData);

    ThreadData(const ThreadData< T_DATA >& from);

    ThreadData(ThreadData< T_DATA >&& from);

    ~ThreadData() = default;

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


    ThreadData< T_DATA >& operator=(const ThreadData< T_DATA >& from);

    ThreadData< T_DATA >& operator=(ThreadData< T_DATA >&& from);

    bool operator==(const ThreadData< T_DATA >& from) const;

    bool operator==(const T_DATA& from) const;

    bool operator!=(const ThreadData< T_DATA >& from) const;

    bool operator!=(const T_DATA& from) const;

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


    data_type operator*();
 
    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->();
 
    template < typename X = T_DATA >
    std::enable_if_t< !std::is_pointer< X >::value, data_pointer > operator->();

    T_DATA data;
  };
 
 
} /* namespace gum */
 
#include <agrum/base/core/threads/threadData_tpl.h>
 
#endif /* GUM_THREAD_DATA_H */