2020年5月17日 上午12:12
总结：
- 线程的交换和线程的转移，其实与我们平常的变量的交换混合移动是一模一样的，线程也是一个对象，那么我们就可以按照对象的处理方式处理它
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75// Demo9-11.cpp : 定义控制台应用程序的入口点。
using namespace std;
// 存钱
void Deposit(mutex& m, int& money)
{
// 锁的粒度尽可能的最小化
for(int index = 0; index < 100; index++)
{
m.lock();
money += 1;
m.unlock();
}
}
// 取钱
void Withdraw(mutex& m, int& money)
{
// 锁的粒度尽可能的最小化
for (int index = 0; index < 100; index++)
{
m.lock();
money -= 2;
m.unlock();
}
}
int main()
{
// 银行存取款
//int money = 2000;
//mutex m;
//cout << "Current money is: " << money << endl;
//thread t1(Deposit, ref(m), ref(money));
//thread t2(Withdraw, ref(m), ref(money));
//t1.join();
//t2.join();
//cout << "Finally money is: " << money << endl;
//线程交换
//thread tW1([]()
//{
// cout << "ThreadSwap1 " << endl;
//});
//thread tW2([]()
//{
// cout << "ThreadSwap2 " << endl;
//});
//cout << "ThreadSwap1' id is " << tW1.get_id() << endl;
//cout << "ThreadSwap2' id is " << tW2.get_id() << endl;
//cout << "Swap after:" << endl;
//swap(tW1, tW2);
//cout << "ThreadSwap1' id is " << tW1.get_id() << endl;
//cout << "ThreadSwap2' id is " << tW2.get_id() << endl;
//tW1.join();
//tW2.join();
//// 线程移动
thread tM1( []() { ; } );
//tM1.join();
cout << "ThreadMove1' id is " << tM1.get_id() << endl;
cout << "Move after:" << endl;
thread tM2 = move(tM1);
cout << "ThreadMove2' id is " << tM2.get_id() << endl;
cout << "ThreadMove1' id is " << tM1.get_id() << endl;
tM2.join();
return 0;
}