| /* |
| * Copyright (c) 2009-2010 jMonkeyEngine |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * * Neither the name of 'jMonkeyEngine' nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package com.jme3.asset; |
| |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ThreadFactory; |
| |
| /** |
| * <code>ThreadingManager</code> manages the threads used to load content |
| * within the Content Manager system. A pool of threads and a task queue |
| * is used to load resource data and perform I/O while the application's |
| * render thread is active. |
| */ |
| public class ThreadingManager { |
| |
| protected final ExecutorService executor = |
| Executors.newFixedThreadPool(2, |
| new LoadingThreadFactory()); |
| |
| protected final AssetManager owner; |
| |
| protected int nextThreadId = 0; |
| |
| public ThreadingManager(AssetManager owner){ |
| this.owner = owner; |
| } |
| |
| protected class LoadingThreadFactory implements ThreadFactory { |
| public Thread newThread(Runnable r) { |
| Thread t = new Thread(r, "pool" + (nextThreadId++)); |
| t.setDaemon(true); |
| t.setPriority(Thread.MIN_PRIORITY); |
| return t; |
| } |
| } |
| |
| protected class LoadingTask implements Callable<Object> { |
| private final String resourceName; |
| public LoadingTask(String resourceName){ |
| this.resourceName = resourceName; |
| } |
| public Object call() throws Exception { |
| return owner.loadAsset(new AssetKey(resourceName)); |
| } |
| } |
| |
| // protected class MultiLoadingTask implements Callable<Void> { |
| // private final String[] resourceNames; |
| // public MultiLoadingTask(String[] resourceNames){ |
| // this.resourceNames = resourceNames; |
| // } |
| // public Void call(){ |
| // owner.loadContents(resourceNames); |
| // return null; |
| // } |
| // } |
| |
| // public Future<Void> loadContents(String ... names){ |
| // return executor.submit(new MultiLoadingTask(names)); |
| // } |
| |
| // public Future<Object> loadContent(String name) { |
| // return executor.submit(new LoadingTask(name)); |
| // } |
| |
| public static boolean isLoadingThread() { |
| return Thread.currentThread().getName().startsWith("pool"); |
| } |
| |
| |
| } |