一、传递类对象作为线程参数
#include<iostream>
#include<thread>
using namespace std;
class A
{
public:
mutable int m_i;
//类型转换构造函数，可以把一个int转换成一个类A对象
A(int a) :m_i(a) {
cout << "[A::A(int a)构造函数执行]" << this << "thread_id = " << std::this_thread::get_id() << endl;
}
A(const A& a) :m_i(a.m_i) {
cout << "[A::A(int a)拷贝构造函数执行]" << this << "thread_id = " << std::this_thread::get_id() << endl;
}
~A() {
cout << "[A::~A(int a)析构函数执行]" << this << "thread_id = " << std::this_thread::get_id() << endl;
}
};
void myprint2(const A& pmybuf)
{
pmybuf.m_i = 199; // 因为是mutable的，修改该值不会影响main函数
cout << "子线程myprint2的参数地址是" << &pmybuf << "thread_id = " << std::this_thread::get_id() << endl;// 打
