How to use

waitForUnblock

method

in

org.jgroups.protocols.pbcast.FLUSH

private Object handleConnect(Event evt, boolean waitForUnblock) {
  if (sentBlock.compareAndSet(false, true)) {
    sendBlockUpToChannel();
  }
  Object result = down_prot.down(evt);
  if (result instanceof Throwable) {
    // set the var back to its original state if we cannot
    // connect successfully
    sentBlock.set(false);
  }
  if(waitForUnblock)
    waitForUnblock();
  return result;
}

@SuppressWarnings("unchecked")
private void onResume(Event evt) {
  List<Address> members =evt.getArg();
  long viewID = currentViewId();
  boolean isParticipant = false;
  synchronized(sharedLock) {
    isParticipant = flushMembers.contains(localAddress) || (members != null && members.contains(localAddress));
  }
  if (members == null || members.isEmpty()) {
    Message msg = new Message(null).src(localAddress);
    // Cannot be OOB since START_FLUSH is not OOB
    // we have to FIFO order two subsequent flushes
    if (log.isDebugEnabled())
      log.debug(localAddress + ": received RESUME, sending STOP_FLUSH to all");
    msg.putHeader(this.id, new FlushHeader(FlushHeader.STOP_FLUSH, viewID));
    down_prot.down(msg);
  } else {
    for (Address address : members) {
      Message msg = new Message(address).src(localAddress);
      // Cannot be OOB since START_FLUSH is not OOB
      // we have to FIFO order two subsequent flushes
      if (log.isDebugEnabled())
        log.debug(localAddress + ": received RESUME, sending STOP_FLUSH to " + address);
      msg.putHeader(this.id, new FlushHeader(FlushHeader.STOP_FLUSH, viewID));
      down_prot.down(msg);
    }
  }
  if(isParticipant)
    waitForUnblock();        
}

private Object handleConnect(Event evt, boolean waitForUnblock) {
  if (sentBlock.compareAndSet(false, true)) {
    sendBlockUpToChannel();
  }
  Object result = down_prot.down(evt);
  if (result instanceof Throwable) {
    // set the var back to its original state if we cannot
    // connect successfully
    sentBlock.set(false);
  }
  if(waitForUnblock)
    waitForUnblock();
  return result;
}

@SuppressWarnings("unchecked")
private void onResume(Event evt) {
  List<Address> members =evt.getArg();
  long viewID = currentViewId();
  boolean isParticipant = false;
  synchronized(sharedLock) {
    isParticipant = flushMembers.contains(localAddress) || (members != null && members.contains(localAddress));
  }
  if (members == null || members.isEmpty()) {
    Message msg = new Message(null).src(localAddress);
    // Cannot be OOB since START_FLUSH is not OOB
    // we have to FIFO order two subsequent flushes
    if (log.isDebugEnabled())
      log.debug(localAddress + ": received RESUME, sending STOP_FLUSH to all");
    msg.putHeader(this.id, new FlushHeader(FlushHeader.STOP_FLUSH, viewID));
    down_prot.down(msg);
  } else {
    for (Address address : members) {
      Message msg = new Message(address).src(localAddress);
      // Cannot be OOB since START_FLUSH is not OOB
      // we have to FIFO order two subsequent flushes
      if (log.isDebugEnabled())
        log.debug(localAddress + ": received RESUME, sending STOP_FLUSH to " + address);
      msg.putHeader(this.id, new FlushHeader(FlushHeader.STOP_FLUSH, viewID));
      down_prot.down(msg);
    }
  }
  if(isParticipant)
    waitForUnblock();        
}