unique

#include 
#include 
#include "httplib.h"
using namespace std;
int i = 0;
std::mutex obj;
void run1(int a){
	while (1) {
		Sleep(400);
		std::unique_lock ni(obj);
		//所有权传递，类似智能指针，
		//std::unique_lock nj(ni); 这样不行，不能复制
		std::unique_lock nj(std::move(ni));
		i++;
		std::cout << i << std::endl;
		std::cout << "子线程ID = " << std::this_thread::get_id() << std::endl;
	}
}
void run2(int a) {
	while (1) {
		Sleep(400);
		std::unique_lock ni(obj);
		i--;
		std::cout << i << std::endl;
		std::cout << "子线程ID = " << std::this_thread::get_id() << std::endl;
	}
}
int main()
{
	std::thread o1(run1, 1);
	std::thread o2(run2, 1);
	o1.join();
	o2.join();
	std::cout << "主线程ID = " << std::this_thread::get_id() << std::endl;
	return 0;
}