public void quiesce(){
  final String methodName="quiesce";
  this.quiescing=true;
synchronized (spaceAvailable) {
    log.fine(CLASS_NAME,methodName,"711");
    spaceAvailable.notifyAll();
  }
}

public void quiesce ( ) { final String methodName = "quiesce" ; this . quiescing = true ; synchronized ( spaceAvailable ) { log . fine ( CLASS_NAME , methodName , "711" ) ; spaceAvailable . notifyAll ( ) ; } }
let the call back thread quiesce . prevent new inbound messages being added to the process queue and let existing work quiesce . ( until the thread is told to shutdown ) .
