Subj : Re: Challenge: Multithreading & Synchronization
To   : comp.programming.threads
From : Sergei Organov
Date : Thu May 19 2005 02:17 pm

"Uenal Mutlu" <520001085531-0001@t-online.de> writes:
> "Sergei Organov" wrote
> > "Uenal Mutlu"  writes:
> > > Can you give an example for just the member function f2(), or more if
> > > possible?
> >
> > Sorry, f2() with lock() at the beginning and unlock() at the end? Or
> > f2() in a supposed to be a good design? In the former case it's trivial, in
> > the latter case I'm afraid there will be no f2().
> 
> lock(), unlock() applied to what?

Applied to the single recursive mutex that protects all the data inside the
Server class:

class RecursiveMutex;
class Server
{
public:
  void f2()
  {
    mutex.lock();
    // uses vMD, vSD
    mutex.unlock();
  }

private:
  RecursiveMutex mutex;
  std::vector<SessionData> vSD;
  std::vector<JobData>     vJD;
  std::vector<MiscData>    vMD;
};


> Why would you remove f2() since it is a member function, ie. an API
> function.

1. Because f2() is not a good name for an API function, obviously.

2. Because the API probably is broken to the same level as the rest of
   the design.

-- 
Sergei.

.