Exceptions across threads

[tpe]

Hi, I have a class that starts and stops a thread. If an exception occurs inside the thread, the function will silently stop without signaling the main about the error.

class Driver{
  public:
    Driver(){}
    ~Driver(){}
    void start()
    {
       m_terminate = false;
       myThread = boost::thread(loop, this);
    }
    void stop()
    {
      m_terminate = true;
      myThread.join();
    }
  private:
    bool m_terminate;
    boost::thread myThread ;
}

void loop()
{
  try
  {
    while(!m_terminate)
    {
      //Do something..
      throw 1;  //something went wrong, throw an exception.
    }
  }
  catch(int)
  {
    throw; // Rethrow. This will not be caught by the main()!!
  }
}

int main()
{
  Driver d;
  try
  {
    d.open()
    // Do something..
    // ..
    d.close()
  }
  catch(int)
  {
    //how to catch here an exception occurred in loop()?
  }
  return 0;
}

Is there a way to propagate the exception up to the main?
I don't want to add a new method to the Driver to poll the thread's state.

Thanks for your help.

[kbw]

Exceptions do not hop threads, they occur within a thread of execution.

[jsmith]

There isn't. You should catch all exceptions in the thread's main function and have the thread
main return an error code to the parent.