| /* |
| * Copyright (C) 2010 Google Inc. |
| * |
| * Licensed 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 com.googlecode.android_scripting.future; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * FutureResult represents an eventual execution result for asynchronous operations. |
| * |
| * @author Damon Kohler (damonkohler@gmail.com) |
| */ |
| public class FutureResult<T> implements Future<T> { |
| |
| private final CountDownLatch mLatch = new CountDownLatch(1); |
| private volatile T mResult; |
| |
| public void set(T result) { |
| mResult = result; |
| mLatch.countDown(); |
| } |
| |
| @Override |
| public boolean cancel(boolean mayInterruptIfRunning) { |
| return false; |
| } |
| |
| @Override |
| public T get() throws InterruptedException { |
| mLatch.await(); |
| return mResult; |
| } |
| |
| @Override |
| public T get(long timeout, TimeUnit unit) throws InterruptedException { |
| mLatch.await(timeout, unit); |
| return mResult; |
| } |
| |
| @Override |
| public boolean isCancelled() { |
| return false; |
| } |
| |
| @Override |
| public boolean isDone() { |
| return mResult != null; |
| } |
| |
| } |