CPUExecutor.hpp

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// SPDX-FileCopyrightText: 2023 - 2026 NeoN authors
//
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include "NeoN/core/logging.hpp"
#include "NeoN/core/memory/allocator.hpp"
#include "NeoN/core/primitives/label.hpp"
 
#include <Kokkos_Core.hpp> // IWYU pragma: keep
 
namespace NeoN
{

class CPUExecutor : public Logging::SupportsLoggingMixin
{
    std::shared_ptr<AllocatorContext> allocContext_ = nullptr;
 
public:
 
    using exec = Kokkos::DefaultHostExecutionSpace;
 
    CPUExecutor();
 
    CPUExecutor(std::unique_ptr<AllocatorStrategy> strategy);
 
    ~CPUExecutor();
 
    template<typename T>
    T* alloc(sizeType elements) const
    {
        if (!allocContext_)
        {
            NF_ERROR_EXIT("No allocator set");
        }
        return allocContext_->alloc<T>(elements);
    }
 
    template<typename T>
    T* realloc(void* ptr, sizeType elements) const
    {
        if (!allocContext_)
        {
            NF_ERROR_EXIT("No allocator set");
        }
        return allocContext_->realloc<T>(ptr, elements);
    }
 
    void free(void* ptr) const noexcept { allocContext_->free(ptr); }
 
    MemorySpace memorySpace() const noexcept { return MemorySpace::CPU; }

    template<typename ValueType>
    decltype(auto) createKokkosView(ValueType* ptr, sizeType size) const
    {
        return Kokkos::View<ValueType*, Kokkos::HostSpace, Kokkos::MemoryUnmanaged>(ptr, size);
    }
 
    std::string name() const { return "CPUExecutor"; };
 
    exec underlyingExec() const { return exec {}; }
};
 
} // namespace NeoN