map_temp_page.h

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#pragma once
 
#include "iris/core/error.h"
 
namespace iris::mm {
struct TempPage;
 
auto map_temp_page() -> Expected<TempPage>;
void unmap_temp_page(void*);
 
struct TempPage {
public:
    explicit TempPage(void* data) : m_data(data) {}
 
    ~TempPage() { unmap_temp_page(m_data); }
 
    TempPage(TempPage const&) = delete;
    TempPage(TempPage&&) = delete;
    auto operator=(TempPage const&) -> TempPage& = delete;
    auto operator=(TempPage&&) -> TempPage& = delete;
 
    template<typename T>
    requires(sizeof(T) <= 4096 && alignof(T) <= 4096)
    auto typed() const -> T* {
        return reinterpret_cast<T*>(m_data);
    }
 
private:
    void* m_data;
};
}