message: Added Channel::count() & Channel::get_bytes()
diff: @@ -64,6 +64,12 @@ class Channel {
  int notify();
  void destroy();
  void print();
  + inline int count() {
  + return num;
  + }
  + inline int get_bytes() {
  + return bytes;
  + }
  static Channel *make(size_t size, size_t maxlen, int flags);
  private:
  