StlAllocator.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#if (defined(__AUTORTFM) && __AUTORTFM)
 
#include "ExternAPI.h"
 
#include <cstddef>
 
namespace AutoRTFM
{
 
// A stl-compatible allocator which allocates with AutoRTFM::Allocate() and
// frees with AutoRTFM::Free().
// TODO(SOL-7652): Remove this once HashMap has been replaced with a bespoke
// hashmap implementation.
template <typename T>
class StlAllocator
{
public:
    using value_type = T;
 
    StlAllocator() = default;
 
    template <typename U>
    StlAllocator(const StlAllocator<U>&) {};
 
    T* allocate(size_t Count)
    {
        return static_cast<T*>(AutoRTFM::Allocate(Count * sizeof(T), alignof(T)));
    }
 
    void deallocate(T* Pointer, size_t)
    {
        AutoRTFM::Free(Pointer);
    }
};
 
template <typename T, typename U>
bool operator==(const StlAllocator<T>&, const StlAllocator<U>&)
{
    return true;
}
 
template <typename T, typename U>
bool operator!=(const StlAllocator<T>&, const StlAllocator<U>&)
{
    return false;
}
 
}  // AutoRTFM
 
#endif // (defined(__AUTORTFM) && __AUTORTFM)