如何将实例成员函数作为回调传递给std :: thread [英] How do I pass an instance member function as callback to std::thread

问题描述

可能重复:
使用成员函数启动线程

Possible Duplicate:
Start thread with member function

我是C ++的新手.我的经验主要是使用javascript和Java.

I'm VERY new to C++. My experience has mostly been with javascript and java.

我在Lion上使用Xcode.以下代码为我提供了一个编译错误:必须调用对非静态成员函数的引用；您的意思是不带任何参数调用它吗?"

I'm using Xcode on Lion. The following code gives me a compilation error "Reference to non-static member function must be called; did you mean to call it with no arguments?"

class MyClass {
private:
    void handler() {
    }

public:
    void handleThings() {
        std::thread myThread(handler);
    }
};

我也尝试了this->handler，&handler和其他变体，但没有一个起作用.这段代码可以编译并完成我想要的:

I also tried this->handler, &handler, and other variations, but none of them worked. This code compiles though and accomplishes what I want it to:

class MyClass {
private:
    void handler() {
    }

public:
    void handleThings() {
        std::thread myThread([this]() {
            handler();
        });
    }
};

为什么不能将引用传递给成员函数?我的解决方法是最好的解决方案吗?

Why can't I pass a reference to a member function? Is my work-around the best solution?

推荐答案

std::thread myThread(&MyClass::handler, this);
myThread.join();

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