/*

 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#pragma once

#include <AK/Noncopyable.h>

#include <AK/Types.h>

namespace AK {

template<typename T>

class NeverDestroyed {

    AK_MAKE_NONCOPYABLE(NeverDestroyed);

    AK_MAKE_NONMOVABLE(NeverDestroyed);

public:

    template<typename... Args>

    NeverDestroyed(Args&&... args)

    {

        new (storage) T(forward<Args>(args)...);

    }

AK::NeverDestroyed<JS::CellAllocator>::NeverDestroyed<unsigned long, char const*&>(unsigned long&&, char const*&)

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    {

23

1.13k

        new (storage) T(forward<Args>(args)...);

24

1.13k

    }

AK::NeverDestroyed<JS::ExecutionContextAllocator>::NeverDestroyed<>()

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4

    {

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4

        new (storage) T(forward<Args>(args)...);

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4

    }

    ~NeverDestroyed() = default;

    T* operator->() { return &get(); }

    T const* operator->() const { return &get(); }

    T& operator*() { return get(); }

    T const& operator*() const { return get(); }

    T& get() { return reinterpret_cast<T&>(storage); }

AK::NeverDestroyed<JS::CellAllocator>::get()

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34

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    T& get() { return reinterpret_cast<T&>(storage); }

AK::NeverDestroyed<JS::ExecutionContextAllocator>::get()

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170

    T& get() { return reinterpret_cast<T&>(storage); }

    T const& get() const { return reinterpret_cast<T&>(storage); }

private:

    alignas(T) u8 storage[sizeof(T)];

};

}

#if USING_AK_GLOBALLY

using AK::NeverDestroyed;

#endif