timing.h

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#ifndef NNGN_TIMING_TIMING_H
#define NNGN_TIMING_TIMING_H
 
#include <chrono>
 
#include "utils/def.h"
 
namespace nngn {
 
struct Timing {
    using clock = std::chrono::steady_clock;
    using time_point = clock::time_point;
    using duration = clock::duration;
    time_point now = clock::now();
    u64 frame = 0;
    duration dt = duration(0);
    template<typename F> static duration time(F &&f);
    duration::rep now_ns(void) const;
    duration::rep now_us(void) const;
    duration::rep now_ms(void) const;
    duration::rep now_s(void) const;
    float fnow_ns(void) const;
    float fnow_us(void) const;
    float fnow_ms(void) const;
    float fnow_s(void) const;
    duration::rep dt_ns(void) const;
    duration::rep dt_us(void) const;
    duration::rep dt_ms(void) const;
    duration::rep dt_s(void) const;
    float fdt_ns(void) const;
    float fdt_us(void) const;
    float fdt_ms(void) const;
    float fdt_s(void) const;
    void update(void);
};
 
template<typename F> Timing::duration Timing::time(F &&f) {
    const auto t0 = Timing::clock::now();
    f();
    return Timing::clock::now() - t0;
}
 
}
 
#endif