CheckedRam.hh

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#ifndef CHECKEDRAM_HH
#define CHECKEDRAM_HH
 
#include "Ram.hh"
#include "TclCallback.hh"
#include "CacheLine.hh"
#include "Observer.hh"
#include "openmsx.hh"
#include <vector>
#include <bitset>
 
namespace openmsx {
 
class DeviceConfig;
class MSXCPU;
class Setting;
 
class CheckedRam final : private Observer<Setting>
{
public:
        CheckedRam(const DeviceConfig& config, const std::string& name,
                   static_string_view description, unsigned size);
        ~CheckedRam();
 
        [[nodiscard]] byte read(unsigned addr);
        [[nodiscard]] byte peek(unsigned addr) const { return ram[addr]; }
        void write(unsigned addr, byte value);
 
        [[nodiscard]] const byte* getReadCacheLine(unsigned addr) const;
        [[nodiscard]] byte* getWriteCacheLine(unsigned addr) const;
        [[nodiscard]] byte* getRWCacheLines(unsigned addr, unsigned size) const;
 
        [[nodiscard]] unsigned getSize() const { return ram.getSize(); }
        void clear();
 
        [[nodiscard]] Ram& getUncheckedRam() { return ram; }
 
        // TODO
        //template<typename Archive>
        //void serialize(Archive& ar, unsigned version);
 
private:
        void init();
 
        // Observer<Setting>
        void update(const Setting& setting) noexcept override;
 
private:
        std::vector<bool> completely_initialized_cacheline;
        std::vector<std::bitset<CacheLine::SIZE>> uninitialized;
        Ram ram;
        MSXCPU& msxcpu;
        TclCallback umrCallback;
};
 
} // namespace openmsx
 
#endif