29 lines
932 B
C++
29 lines
932 B
C++
#pragma once
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#include <chrono>
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#include <atomic>
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namespace tools
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{
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template <typename Clock = std::chrono::high_resolution_clock>
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class stopwatch
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{
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const typename Clock::time_point start_point;
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public:
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stopwatch() :
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start_point(Clock::now())
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{}
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template <typename Rep = typename Clock::duration::rep, typename Units = typename Clock::duration>
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Rep elapsed_time() const
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{
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std::atomic_thread_fence(std::memory_order_relaxed);
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auto counted_time = std::chrono::duration_cast<Units>(Clock::now() - start_point).count();
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std::atomic_thread_fence(std::memory_order_relaxed);
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return static_cast<Rep>(counted_time);
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}
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};
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using precise_stopwatch = stopwatch<>;
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using system_stopwatch = stopwatch<std::chrono::system_clock>;
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using monotonic_stopwatch = stopwatch<std::chrono::steady_clock>;
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} |