[boost] Threads and mutexes : assign_to error

[Jacques Kerner]

Hi,

I get the following error :

error C2664: 'void boost::function0<R,Allocator>::assign_to(Functor)' : 
unable to convert parameter 1 from 'const CTaskManager' to 'CTaskManager'

when doing this :

class CTaskManager
{
   public:
       CTaskManager();
       ~CTaskManager();
       void operator()() {}
  
   private:
       boost::mutex m_mutex;
}

and

CTaskManager taskManager;
boost::thread_group mainThreadGroup;
mainThreadGroup.create_thread(taskManager);
mainThreadGroup.join_all();
The error dissapears when I remove the mutex from the definition of  
CTaskManager ... (?!!)

So what is the right way to use mutex and threads together? Do I have to 
declare the mutex outside of the
functor? Why?



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