@Override
    public boolean hasQueuedReaderThreads() {
        return readerLock.hasQueuedThreads();
    }
Returns whether there are threads waiting for read access to the
Guacamole instruction stream.

@return true if threads are waiting for read access the Guacamole
        instruction stream, false otherwise.
guacamole-common/src/main/java/org/apache/guacamole/net/AbstractGuacamoleTunnel.java