noobie thread question

[rekcha]

I have classes

class FirstClass
{
public:
  FirstClass();

  SecondClass *second;

  void LaunchSecond(){
    this->second = new SecondClass(this);
    this->second->testnumber = 92;
    boost::thread(&SecondClass::ThreadFunc, this->second);
    while(1)
    {
      outputmutex->lock();
      cout<<"Main thread: "<<this->second->testnumber<<endl;
      outputmutex->unlock();
    }
  };

};

class SecondClass
{
  FirstClass *first;
public:
  int testNumber;
  SecondClass(FirstClass *x){ this->first = x };

  void ThreadFunc(){ 
    while(1) 
    {
      outputmutex->lock();
      cout<<"Second thread: "<<this->testNumber<<endl; 
      outputmutex->unlock();
    }
  };
}

The thread launches without error, but cout's the wrong number. The main thread shows 92, so this isn't a mutex issue, but rather the thread seems to be launching with a bad copy of SecondClass instead of a reference to (this->second)

Any idea on what's causing this or how I can fix it? I've tried just about every combination of boost::bind and boost::ref I can think of.

Thanks in advance :)

[helios]

Are testNumber and testnumber different variables or is that just a typo?

[bluecoder]

What is the output you are getting ?

[rekcha]

It's a typo, they're the same

I'm getting

Main thread: 92
Main thread: 92
Second thread: -12748
Main thread: 92
Second thread: -12748
Main thread: 92
Second thread: -12748