ElapseTimer.h

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#pragma once
 
#include <misc/gen/TimeSpec.h>
#include <misc/global.h>
 
namespace sf
{
class _MISC_CLASS ElapseTimer
{
  public:
    ElapseTimer();
 
    explicit ElapseTimer(const timespec& t);
 
    explicit ElapseTimer(unsigned long usec);
 
    void set(const timespec& t);
 
    void set(unsigned long nsec);
 
    void reset();
 
    void disable();
 
    void enable();
 
    [[nodiscard]] bool isEnabled() const;
 
    [[nodiscard]] bool isActive() const;
 
    [[nodiscard]] TimeSpec getElapseTime() const;
 
    [[nodiscard]] TimeSpec getTimeLeft() const;
 
    [[nodiscard]] TimeSpec getTimeLeft(const timespec&) const;
 
    [[nodiscard]] TimeSpec getTimeOver() const;
 
    [[nodiscard]] TimeSpec getTimeOver(const timespec&) const;
 
    explicit operator bool() const;
 
    bool operator()(const timespec& t) const;
 
  private:
    bool _enabled{false};
    TimeSpec _target{};
    TimeSpec _elapsedTime{};
};
 
inline ElapseTimer::ElapseTimer(const timespec& t)
{
  set(t);
}
 
inline void ElapseTimer::reset()
{
  set(_elapsedTime);
}
 
inline void ElapseTimer::disable()
{
  _enabled = false;
}
 
inline void ElapseTimer::enable()
{
  _enabled = true;
}
 
inline bool ElapseTimer::isEnabled() const
{
  return _enabled;
}
 
inline TimeSpec ElapseTimer::getElapseTime() const
{
  return _elapsedTime;
}
 
inline ElapseTimer::operator bool() const
{
  return isActive();
}
 
}// namespace sf