| /* |
| * Copyright 2013 AndroidPlot.com |
| * |
| * 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.androidplot.util; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * Utility class for obtaining synch lock across multiple objects. |
| */ |
| public abstract class MultiSynch { |
| |
| /** |
| * Callback class for doing work from within a MultiSynch. |
| */ |
| public interface Action { |
| |
| /** |
| * Invoked by MultiSynch.run(...) |
| * @param params |
| */ |
| public void run(Object[] params); |
| } |
| |
| |
| /** |
| * |
| * @param params |
| * @param synchSet Set of objects to be synchronized upon |
| * @param action Action to be invoked once full synchronization has been obtained. |
| */ |
| public static void run(Object[] params, Set synchSet, Action action) { |
| run(params, synchSet.toArray(), action, 0); |
| } |
| |
| /** |
| * @param params |
| * @param synchList List of objects to be synchronized upon |
| * @param action Action to be invoked once full synchronization has been obtained. |
| */ |
| public static void run(Object[] params, List synchList, Action action) { |
| run(params, synchList.toArray(), action, 0); |
| } |
| |
| /** |
| * @param params |
| * @param synchArr Array of objects to be synchronized upon |
| * @param action Action to be invoked once full synchronization has been obtained. |
| */ |
| public static void run(Object[] params, Object[] synchArr, Action action) { |
| run(params, synchArr, action, 0); |
| } |
| |
| /** |
| * Recursively synchs on each item in SynchList |
| * @param params |
| * @param synchArr |
| * @param action |
| * @param depth |
| */ |
| private static void run(Object[] params, Object[] synchArr, Action action, int depth) { |
| if (synchArr != null) { |
| synchronized (synchArr[depth]) { |
| if (depth < synchArr.length - 1) { |
| run(params, synchArr, action, ++depth); |
| } else { |
| action.run(params); |
| } |
| } |
| } |
| action.run(params); |
| } |
| } |