如何从main()调用线程成员函数

Question

我在编译使用线程的程序时遇到错误.这是导致问题的部分.如果有人告诉我是否以正确的方式调用线程函数,那将会很好.

在main.cpp中:

int main() 
{
    WishList w;
    boost::thread thrd(&w.show_list);
    thrd.join();
}

在another_file.cpp中:

class WishList{
public:
      void show_list();
}

void WishList::show_list(){
        .
        .
        .
        .
}

我收到以下错误

error: ISO C++ forbids taking the address of a bound member function to form a pointer to member function.  Say ‘&WishList::show_list’

/home/sharatds/Downloads/boost_1_46_1/boost/thread/detail/thread.hpp: In member function ‘void boost::detail::thread_data<F>::run() [with F = void (WishList::*)()]’:

/home/sharatds/Downloads/boost_1_46_1/boost/thread/detail/thread.hpp:61:17: error: must use ‘.*’ or ‘->*’ to call pointer-to-member function in ‘((boost::detail::thread_data<void (WishList::*)()>*)this)->boost::detail::thread_data<void (WishList::*)()>::f (...)’, e.g. ‘(... ->* ((boost::detail::thread_data<void (WishList::*)()>*)this)->boost::detail::thread_data<void (WishList::*)()>::f) (...)’

编辑:在为线程安装Boost库时遇到问题.一旦它工作,请尽快尝试

Answer 1

获取成员函数地址的语法&ClassName::FunctionName应该是&WishList::show_list,但现在需要一个对象来调用函数指针.最好(也是最简单)是使用boost::bind:

#include <boost/bind.hpp>

WishList w;
boost::thread t(boost::bind(&WishList::show_list, &w));