Linux下C++定时器的使用

#include 
#include 
using namespace std;

typedef void (*BACKCALLFUNC)(void*);

void setTimer(unsigned int id, int msec, BACKCALLFUNC backCallFunc)
{
	if (msec < 0)
	{
		return;
	}
	auto start = std::chrono::system_clock::now();
	double totalTime = 0;
	while (1)
	{
		auto finish = std::chrono::system_clock::now();
		totalTime = (double)std::chrono::duration_cast(finish - start).count();
		if (totalTime > msec)
		{
			backCallFunc(&totalTime);
			break;
		}
	}
}
//回调函数
void backCallFunc(void* arg)
{
	cout << *(double*)arg << "ms" << endl;
}

int main()
{
	while (1)
	{
		setTimer(1, 2000, backCallFunc);//1为id，2000为msec(毫秒量)，backCallFunc为回调函数
	}
	return 0;
}