AtomicHierarchy.hpp

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/* Copyright 2020 Benjamin Worpitz, René Widera, Bernhard Manfred Gruber
 * SPDX-License-Identifier: MPL-2.0
 */
 
#pragma once
 
#include "alpaka/atomic/Traits.hpp"
#include "alpaka/meta/InheritFromList.hpp"
#include "alpaka/meta/Unique.hpp"
 
#include <tuple>
 
namespace alpaka
{
    //! build a single class to inherit from different atomic implementations
    //
    //  This implementation inherit from all three hierarchies.
    //  The multiple usage of the same type for different levels is allowed.
    //  The class provide the feature that each atomic operation can be focused
    //  to a hierarchy level in alpaka. A operation to a hierarchy is independent
    //  to the memory hierarchy.
    //
    //  \tparam TGridAtomic atomic implementation for atomic operations between grids within a device
    //  \tparam TBlockAtomic atomic implementation for atomic operations between blocks within a grid
    //  \tparam TThreadAtomic atomic implementation for atomic operations between threads within a block
    template<typename TGridAtomic, typename TBlockAtomic, typename TThreadAtomic>
    using AtomicHierarchy = alpaka::meta::InheritFromList<alpaka::meta::Unique<std::tuple<
        TGridAtomic,
        TBlockAtomic,
        TThreadAtomic,
        interface::Implements<ConceptAtomicGrids, TGridAtomic>,
        interface::Implements<ConceptAtomicBlocks, TBlockAtomic>,
        interface::Implements<ConceptAtomicThreads, TThreadAtomic>>>>;
} // namespace alpaka