public void close() {
      alive = false;
      synchronized (signal) {
        signal.notifyAll();
      }
    }
Keeps track of the clients that have added a queue since the last load was sent to the
server-locator.

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/cache/server/internal/LoadMonitor.java