class Errno
  // ============================================================================
  // = TITLE
  //    Define a simple Errno abstraction
  //
  // = DESCRIPTION
  //    This class gets its own header file to work around AIX C++
  //    compiler "features" related to template instantiation...  It is
  //    only used by TSS_Test.cpp.
  // ============================================================================
{
public:
  int error (void) { return this->errno_; }
  void error (int i) { this->errno_ = i; }
  
  int line (void) { return this->lineno_; }
  void line (int l) { this->lineno_ = l; }

  // Errno::flags_ is a static variable, so we've got to protect it
  // with a mutex since it isn't kept in thread-specific storage.
  int flags (void) { 
    ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_Mon, Errno::lock_, -1));

    return Errno::flags_;
  }
  int flags (int f)
  {
    ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, Errno::lock_, -1));

    Errno::flags_ = f;
    return 0;
  }

private:
  // = errno_ and lineno_ will be thread-specific data so they don't
  // need a lock.  
  int errno_;
  int lineno_;

  static int flags_;
#if defined (ACE_HAS_THREADS)
  // flags_ needs a lock. 
  static ACE_Thread_Mutex lock_;
#endif /* ACE_HAS_THREADS */
};