boost ::线程分段错误

Question

I have Runnable class. In which, following functions I use to start new thread:

      start()
      {
           status_ = RUNNING;
            mythread_ = boost::thread(boost::ref(*this)); // Line 2
      }

I have Controller class derived from Runnable. and I want to create thread for Controller using start() function

So, In Controller start function,

I use:

controller_->start()

to create a new thread;

But which eventually leads to segmentation fault at Line 2.

Any idea what could have been gone wrong?

Answer 1

I remember sometimes not specifying the thread library to the compiler has resulted in segfault. Try adding -pthread argument to the compiler if you're using unix. It seems though that it's not needed on latest linux/boost/gcc anymore.

Answer 2

The object's address is only available from within the member function as the this pointer and most uses of this are implicit.

Alternatively, you can make the start() function, friend of the class and directly sending reference of the object to your new thread.