memory_resource.hpp

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#pragma once
 
#include <cstddef>
#include <memory>
 
namespace cortex {
 
class MemoryResource {
public:
    MemoryResource() = default;
    MemoryResource(const MemoryResource&) = default;
    MemoryResource(MemoryResource&&) = default;
    MemoryResource& operator=(const MemoryResource&) = default;
    MemoryResource& operator=(MemoryResource&&) = default;
    virtual ~MemoryResource() = default;
 
    void* Allocate(std::size_t bytes, std::size_t alignment = alignof(std::max_align_t)) {
        return DoAllocate(bytes, alignment);
    }
 
    void Deallocate(void* p, std::size_t bytes, std::size_t alignment = alignof(std::max_align_t)) {
        DoDeallocate(p, bytes, alignment);
    }
 
private:
    virtual void* DoAllocate(std::size_t bytes, std::size_t alignment) = 0;
    virtual void DoDeallocate(void* p, std::size_t bytes, std::size_t alignment) = 0;
};
 
using MemoryResourceSharedPtr = std::shared_ptr<MemoryResource>;
 
MemoryResourceSharedPtr GetDefaultMemoryResource();
 
} // namespace cortex