How to use

state

method

in

org.jboss.netty.handler.timeout.ReadTimeoutHandler

private static void destroy(ChannelHandlerContext ctx) {
  State state = state(ctx);
  synchronized (state) {
    if (state.state != 1) {
      return;
    }
    state.state = 2;
  }
  if (state.timeout != null) {
    state.timeout.cancel();
    state.timeout = null;
  }
}

private void initialize(ChannelHandlerContext ctx) {
  State state = state(ctx);
  // Avoid the case where destroy() is called before scheduling timeouts.
  // See: https://github.com/netty/netty/issues/143
  synchronized (state) {
    switch (state.state) {
    case 1:
    case 2:
      return;
    }
    state.state = 1;
  }
  if (timeoutMillis > 0) {
    state.timeout = timer.newTimeout(new ReadTimeoutTask(ctx), timeoutMillis, TimeUnit.MILLISECONDS);
  }
}