pthread_mutex_t ThreadCounted::mutex = PTHREAD_MUTEX_INITIALIZER;

  unsigned int ThreadCounted::threadcount = 1;

  ThreadCounted::ThreadCounted() {
    pthread_mutex_lock(&mutex);
    threadrefs = ThreadCounted::threadcount;
    pthread_mutex_unlock(&mutex);
  }

  ThreadCounted::~ThreadCounted() {
  }

  void ThreadCounted::CLONE() {
    pthread_mutex_lock(&mutex);
    ThreadCounted::threadcount++;
    pthread_mutex_unlock(&mutex);
  }

  void ThreadCounted::DESTROY() {
    pthread_mutex_lock(&mutex);
    if (--threadrefs == 0) {
      delete this;
    }
    pthread_mutex_unlock(&mutex);
  }