可以使用chrono库实现简单的周期周期性定时任务

#include "stdafx.h"
#include <iostream>
#include <chrono>
#include <thread>

using namespace std;
using namespace std::chrono;

class CSimpleTimer
{
public:
	CSimpleTimer() :m_begin(high_resolution_clock::now()){}
	void reset() { m_begin = high_resolution_clock::now(); }

	template<typename Duration = microseconds>
	int64_t elapsed() const
	{
		return duration_cast<Duration>(high_resolution_clock::now() - m_begin).count();
	}

	//micro_s
	int64_t elapsed_micro() const
	{
		return elapsed<microseconds>();
	}

	//mill_s
	int64_t eapsed_ms() const
	{
		return elapsed<milliseconds>();
	}

	// ns
	int64_t elapsed_nano()const
	{
		return elapsed<nanoseconds>();
	}

	// s
	int64_t elapsed_seconds()const
	{
		return elapsed<seconds>();
	}

private:
	time_point<high_resolution_clock> m_begin;
};

void doJob()
{
	std::cout << "shining days" << std::endl;
}

int main()
{
	CSimpleTimer t;
	while (true)
	{
		//1s task
		if (t.elapsed_micro() >= 1000000)
		{
			t.reset();
			doJob();
		}

		std::this_thread::yield();
	}
}

上面的代码每秒打印一个字符串