timeout.h

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#pragma once
 
#include "fl/stl/stdint.h"
#include "fl/stl/noexcept.h"
 
namespace fl {

class Timeout {
public:
    Timeout() FL_NO_EXCEPT : mStartTime(0), mDuration(0) {}

    Timeout(u32 start_time, u32 duration) FL_NO_EXCEPT
        : mStartTime(start_time), mDuration(duration) {}

    bool done(u32 current_time) const FL_NO_EXCEPT {
        u32 elapsed_time = current_time - mStartTime;  // Rollover-safe
        return elapsed_time >= mDuration;
    }

    u32 elapsed(u32 current_time) const FL_NO_EXCEPT {
        return current_time - mStartTime;  // Rollover-safe
    }

    void reset(u32 start_time) FL_NO_EXCEPT {
        mStartTime = start_time;
    }

    void reset(u32 start_time, u32 duration) FL_NO_EXCEPT {
        mStartTime = start_time;
        mDuration = duration;
    }
 
private:
    u32 mStartTime;  
    u32 mDuration;   
};
 
}  // namespace fl