| /******************************************************************************* |
| * Copyright (c) 2011, 2015 EclipseSource and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * EclipseSource - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.rap.rwt.internal.serverpush; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| |
| class ServerPushRequestTracker { |
| |
| private transient List<Thread> callBackRequests; |
| |
| ServerPushRequestTracker() { |
| callBackRequests = new LinkedList<>(); |
| } |
| |
| void deactivate( Thread thread ) { |
| callBackRequests.remove( thread ); |
| } |
| |
| void activate( Thread thread ) { |
| callBackRequests.add( 0, thread ); |
| } |
| |
| boolean hasActive() { |
| return callBackRequests.isEmpty(); |
| } |
| |
| boolean isActive( Thread thread ) { |
| return !hasActive() && callBackRequests.get( 0 ) == thread; |
| } |
| |
| } |