if(m_upProcessingThread != null) { Thread t=m_upProcessingThread; m_upProcessingThread=null;
if(upProcessingThread != null) { Thread t=upProcessingThread; upProcessingThread=null;
        synchronized void suspend() {            m_upLatch.lock();            if(m_upProcessingThread != null) {                Thread t=m_upProcessingThread;                m_upProcessingThread=null;                t.interrupt();            }        }