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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.library.message;
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import org.distorted.library.effect.Effect;
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import java.util.ArrayList;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used in Meshes)
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*
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* @y.exclude
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*/
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public final class EffectMessageSender extends Thread
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{
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private static class Message
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{
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EffectListener mListener;
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long mEffectID;
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Message(EffectListener listener, long effectID)
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{
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mListener = listener;
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mEffectID = effectID;
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}
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}
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private static final Object mArrayLock = new Object();
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private static final Object mLock = new Object();
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private static ArrayList<Message> mList = null;
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private static EffectMessageSender mThis = null;
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private static volatile boolean mNotify = false;
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// debug only, to be removed later
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private static int mNumStarts = 0;
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private static long mStartTime, mStopTime;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private EffectMessageSender()
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public static void startSending()
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{
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synchronized(mLock)
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{
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mStartTime = System.currentTimeMillis();
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mNumStarts++;
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if( mThis==null )
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{
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mList = new ArrayList<>();
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mThis = new EffectMessageSender();
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mThis.start();
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public static void stopSending()
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{
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synchronized(mLock)
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{
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mStopTime = System.currentTimeMillis();
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mNumStarts--;
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if( mThis!=null )
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{
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mThis=null;
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mLock.notify();
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void run()
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{
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Message tmp;
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while(mThis!=null)
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{
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synchronized(mArrayLock)
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{
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int size = mList.size();
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for(int i=0; i<size; i++)
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{
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tmp = mList.remove(0);
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tmp.mListener.effectFinished(tmp.mEffectID);
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}
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}
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synchronized(mLock)
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{
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if (!mNotify)
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{
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try { mLock.wait(); }
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catch(InterruptedException ignored) { }
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}
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mNotify = false;
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}
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}
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mList.clear();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public static void newMessage(Effect effect)
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{
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int numListeners = effect.getNumListeners();
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if( numListeners>0 )
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{
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long id = effect.getID();
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synchronized(mArrayLock)
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{
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for(int i=0; i<numListeners; i++)
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{
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EffectListener listener = effect.removeFirstListener();
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Message msg = new Message(listener,id);
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mList.add(msg);
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}
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}
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synchronized(mLock)
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{
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mNotify = true;
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mLock.notify();
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public static boolean isRunning()
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{
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return mThis!=null;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public static void restartThread()
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{
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synchronized(mLock)
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{
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if( mThis==null )
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{
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if( mList==null ) mList = new ArrayList<>();
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mThis = new EffectMessageSender();
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mThis.start();
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public static String reportState()
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{
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return "running "+(mThis!=null)+" notify="+mNotify+" elements="+mList.size()+
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" start="+mStartTime+" stop="+mStopTime+" numStarts="+mNumStarts;
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}
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}
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