| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.activemq.transport.nio; |
| |
| import java.nio.channels.CancelledKeyException; |
| import java.nio.channels.ClosedChannelException; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.SocketChannel; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.activemq.transport.nio.SelectorManager.Listener; |
| |
| /** |
| * @author chirino |
| */ |
| public final class SelectorSelection { |
| |
| private final SelectorWorker worker; |
| private final Listener listener; |
| private int interest; |
| private SelectionKey key; |
| private AtomicBoolean closed = new AtomicBoolean(); |
| |
| public SelectorSelection(final SelectorWorker worker, final SocketChannel socketChannel, Listener listener) throws ClosedChannelException { |
| this.worker = worker; |
| this.listener = listener; |
| worker.addIoTask(new Runnable() { |
| public void run() { |
| try { |
| SelectorSelection.this.key = socketChannel.register(worker.selector, 0, SelectorSelection.this); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| }); |
| } |
| |
| public void setInterestOps(int ops) { |
| interest = ops; |
| } |
| |
| public void enable() { |
| worker.addIoTask(new Runnable() { |
| public void run() { |
| try { |
| key.interestOps(interest); |
| } catch (CancelledKeyException e) { |
| } |
| } |
| }); |
| } |
| |
| public void disable() { |
| worker.addIoTask(new Runnable() { |
| public void run() { |
| try { |
| key.interestOps(0); |
| } catch (CancelledKeyException e) { |
| } |
| } |
| }); |
| } |
| |
| public void close() { |
| // guard against multiple closes. |
| if( closed.compareAndSet(false, true) ) { |
| worker.addIoTask(new Runnable() { |
| public void run() { |
| try { |
| key.cancel(); |
| } catch (CancelledKeyException e) { |
| } |
| worker.release(); |
| } |
| }); |
| } |
| } |
| |
| public void onSelect() { |
| listener.onSelect(this); |
| } |
| |
| public void onError(Throwable e) { |
| listener.onError(this, e); |
| } |
| |
| } |