timers.h
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	#ifndef BENCHMARK_TIMERS_H
	#define BENCHMARK_TIMERS_H

	#include <chrono>
	#include <string>

	namespace benchmark {

	// Return the CPU usage of the current process
	double ProcessCPUUsage();

	// Return the CPU usage of the children of the current process
	double ChildrenCPUUsage();

	// Return the CPU usage of the current thread
	double ThreadCPUUsage();

	#if defined(HAVE_STEADY_CLOCK)
	template <bool HighResIsSteady = std::chrono::high_resolution_clock::is_steady>
	struct ChooseSteadyClock {
	typedef std::chrono::high_resolution_clock type;
	};

	template <>
	struct ChooseSteadyClock<false> {
	typedef std::chrono::steady_clock type;
	};
	#endif

	struct ChooseClockType {
	#if defined(HAVE_STEADY_CLOCK)
	typedef ChooseSteadyClock<>::type type;
	#else
	typedef std::chrono::high_resolution_clock type;
	#endif
	};

	inline double ChronoClockNow() {
	typedef ChooseClockType::type ClockType;
	using FpSeconds = std::chrono::duration<double, std::chrono::seconds::period>;
	return FpSeconds(ClockType::now().time_since_epoch()).count();
	}

	std::string LocalDateTimeString();

	} // end namespace benchmark

	#endif // BENCHMARK_TIMERS_H