#include <iostream>
#include <thread>
#include <future>
using namespace std;
int testThreadOne()
{
	cout<<"testThreadOne_id:"<<this_thread::get_id()<<endl;
	return 1001;
}
void testAsync1()
{
	future<int> result = async(testThreadOne);
	cout<<result.get()<<endl;
}

class Tihu
{
public:
	int TihuThread(int num)
	{
		cout<<"TihuThread_id"<<this_thread::get_id()<<endl;
		num *= 2；
		this_thread::sleep_for(2s);
		return num;
	}
}
void testAsync2()
	Tihu tihu;
	future<int> result = async(&Tihu::TihuThread,&tihu,1999);
	cout<<result.get()<<endl;
}

void testPackaged_task()
{	
	//1. 打包普通函數(shù)
	packaged_task<int(void)> taskOne(testThreadOne);//函數(shù)返回值加上參數(shù)類型
	thread testOne(ref(taskOne));//需要使用ref轉(zhuǎn)換
	testOne.join();
	cout<<taskOne.get_future().get()<<endl;
	
	//2. 打包類中的成員函數(shù)
	//需要使用函數(shù)適配器進行封裝
	Tihu tihu;
	packaged_task<int(int)> taskTwo(bind(&Tihu::TihuThread,&tihu,placeholders::_1));//如果有參數(shù)需要使用占位符
	thread testTwo(ref(taskTwo),20);
	testTwo.join();
	cout<<testTwo.get_future().get()<<endl;

	//3. 打包Lambda表達式
	packaged_task<int(int)> taskThree([](int num)
	{
		cout<<"thread_id:"<<this_thread::get_id()<<endl;
		num *= 10;
		return num;
	});
	thread testTwo(ref(taskThree),7);
	testTwo.join();
	cout<<testTwo.get_future().get()<<endl;
	
}

void testPromiseThread(promise<int>& temp,int data)
{
?? ?cout<<"testPromise"<<this_thread::get_id()<<endl;
?? ?data *= 3；
?? ?temp.set_value(data);
}
void testPromise()
{
?? ?promise<int> temp;
?? ?thread testp(testPromiseThread,ref(temp),19);
?? ?testp.join();
?? ?cout<<temp.get_future().get()<<endl;
}

int main()
{
?? ?testAsync1();
?? ?testAsync2();

?? ?testPackaged_task();

?? ?testPromise();
?? ?
?? ?return 0;
}