-/*******************************************************************************\r
- * Copyright (c) 2012 Association for Decentralized Information Management in\r
- * Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.utils.threads;\r
-\r
-import java.util.concurrent.TimeUnit;\r
-\r
-/**\r
- * @author Antti Villberg\r
- */\r
-public class Throttler implements Runnable {\r
-\r
- final private IThreadWorkQueue thread;\r
- final private int interval;\r
-\r
- private boolean isScheduling = false;\r
-\r
- private long[] dispatchTimes;\r
- private long lastQueueTime;\r
-\r
- private int dispatchTimePointer = 0;\r
-\r
- private Runnable todo;\r
-\r
- public Throttler(IThreadWorkQueue thread, int interval, int queueLength) {\r
-\r
- this.thread = thread;\r
- this.interval = interval;\r
-\r
- long currentTime = System.currentTimeMillis();\r
-\r
- dispatchTimes = new long[queueLength];\r
- for(int i=0;i<dispatchTimes.length;i++)\r
- dispatchTimes[i] = currentTime - interval;\r
-\r
- lastQueueTime = Long.MAX_VALUE;\r
-\r
- }\r
-\r
- public synchronized void run() {\r
-\r
- if(todo != null) {\r
- thread.asyncExec(todo);\r
- todo = null;\r
- ThreadUtils.getTimer().schedule(this, interval, TimeUnit.MILLISECONDS);\r
- } else {\r
- isScheduling = false;\r
- }\r
-\r
- }\r
- \r
- public synchronized void schedule(Runnable r) {\r
-\r
- assert(thread.currentThreadAccess());\r
- \r
- dispatch(r);\r
-\r
- if(getQueueTime() < interval) {\r
-\r
- isScheduling = true;\r
- ThreadUtils.getTimer().schedule(this, interval, TimeUnit.MILLISECONDS);\r
-\r
- }\r
-\r
- }\r
-\r
- private long getQueueTime() {\r
- return lastQueueTime;\r
- }\r
-\r
- private void dispatch(Runnable runnable) {\r
-\r
- long time = System.currentTimeMillis();\r
- lastQueueTime = time - dispatchTimes[dispatchTimePointer];\r
- dispatchTimes[dispatchTimePointer] = time;\r
- dispatchTimePointer = ((dispatchTimePointer+1) % dispatchTimes.length);\r
-\r
- if(!isScheduling) {\r
- todo = null;\r
- runnable.run();\r
- } else {\r
- todo = runnable;\r
- }\r
-\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2012 Association for Decentralized Information Management in
+ * Industry THTH ry.
+ * 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:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.threads;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @author Antti Villberg
+ */
+public class Throttler implements Runnable {
+
+ final private IThreadWorkQueue thread;
+ final private int interval;
+
+ private boolean isScheduling = false;
+
+ private long[] dispatchTimes;
+ private long lastQueueTime;
+
+ private int dispatchTimePointer = 0;
+
+ private Runnable todo;
+
+ public Throttler(IThreadWorkQueue thread, int interval, int queueLength) {
+
+ this.thread = thread;
+ this.interval = interval;
+
+ long currentTime = System.currentTimeMillis();
+
+ dispatchTimes = new long[queueLength];
+ for(int i=0;i<dispatchTimes.length;i++)
+ dispatchTimes[i] = currentTime - interval;
+
+ lastQueueTime = Long.MAX_VALUE;
+
+ }
+
+ public synchronized void run() {
+
+ if(todo != null) {
+ thread.asyncExec(todo);
+ todo = null;
+ ThreadUtils.getTimer().schedule(this, interval, TimeUnit.MILLISECONDS);
+ } else {
+ isScheduling = false;
+ }
+
+ }
+
+ public synchronized void schedule(Runnable r) {
+
+ assert(thread.currentThreadAccess());
+
+ dispatch(r);
+
+ if(getQueueTime() < interval) {
+
+ isScheduling = true;
+ ThreadUtils.getTimer().schedule(this, interval, TimeUnit.MILLISECONDS);
+
+ }
+
+ }
+
+ private long getQueueTime() {
+ return lastQueueTime;
+ }
+
+ private void dispatch(Runnable runnable) {
+
+ long time = System.currentTimeMillis();
+ lastQueueTime = time - dispatchTimes[dispatchTimePointer];
+ dispatchTimes[dispatchTimePointer] = time;
+ dispatchTimePointer = ((dispatchTimePointer+1) % dispatchTimes.length);
+
+ if(!isScheduling) {
+ todo = null;
+ runnable.run();
+ } else {
+ todo = runnable;
+ }
+
+ }
+
+}