SwapPopQueueFunctor.hpp

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#ifndef INCLUDE_DISTORTOS_INTERNAL_SYNCHRONIZATION_SWAPPOPQUEUEFUNCTOR_HPP_
#define INCLUDE_DISTORTOS_INTERNAL_SYNCHRONIZATION_SWAPPOPQUEUEFUNCTOR_HPP_

#include "distortos/internal/synchronization/QueueFunctor.hpp"

#include <utility>

namespace distortos
{

namespace internal
{

template<typename T>
class SwapPopQueueFunctor : public QueueFunctor
{
public:

    constexpr explicit SwapPopQueueFunctor(T& value) :
            value_{value}
    {

    }

    void operator()(void* const storage) const override
    {
        auto& swappedValue = *reinterpret_cast<T*>(storage);
        using std::swap;
        swap(value_, swappedValue);
        swappedValue.~T();
    }

private:

    T& value_;
};

}   // namespace internal

}   // namespace distortos

#endif  // INCLUDE_DISTORTOS_INTERNAL_SYNCHRONIZATION_SWAPPOPQUEUEFUNCTOR_HPP_