56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
#pragma once
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#if defined(_WIN32)
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#include <windows.h>
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#else
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#include <chrono>
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#endif
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namespace orange
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{
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#if defined(_WIN32)
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struct Time
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{
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static constexpr bool is_steady = true;
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using rep = int64_t;
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using period = std::nano;
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using duration = std::chrono::nanoseconds;
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using time_point = std::chrono::time_point<Time>;
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static inline time_point now() noexcept
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{
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// Keep the frequency static, this doesn't change at all.
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static const int64_t freq = get_frequency();
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const int64_t counter = get_counter();
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const int64_t whole = (counter / freq) * period::den;
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const int64_t part = (counter % freq) * period::den / freq;
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return time_point(duration(whole + part));
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}
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static inline int64_t get_frequency() noexcept
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{
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(&freq);
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return freq.QuadPart;
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}
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static inline int64_t get_counter() noexcept
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{
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LARGE_INTEGER count;
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QueryPerformanceCounter(&count);
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return count.QuadPart;
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}
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};
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#else
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using Time = std::chrono::high_resolution_clock;
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#endif
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using TimePoint = Time::time_point;
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using Seconds = std::chrono::duration<float>;
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} |