Lookup.java

public void lookup() {
    while (Thread.currentThread() == m_logTestThread) {
        ServiceReference logServiceRef =
            m_context.getServiceReference(LogService.class.getName());
        if (logServiceRef != null) {
            try {
            LogService logService =
                (LogService) m_context.getService(logServiceRef);
            if (logService != null) {
                logService.log(LogService.LOG_INFO, "ping");
            } else {
                alternativeLog("LogService has gone");
        }
            } catch (RuntimeException re) {
            alternativeLog("error in LogService " + re);
            } finally {
            m_context.ungetService(logServiceRef);
        }
        } else {
            alternativeLog("LogService has gone");
        }
        pauseTestThread();
    }
}