-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in 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
-\r
-package org.simantics.utils.threads.ua;\r
-\r
-import java.util.ArrayDeque;\r
-import java.util.Queue;\r
-import java.util.concurrent.Executor;\r
-\r
-/**\r
- * The executor serializes the submission of tasks to a second executor,\r
- * illustrating a composite executor.\r
- * \r
- * (This code is copied from the example in {@link Executor})\r
- */\r
-public class SerialExecutor implements Executor {\r
- final Queue<Runnable> tasks = new ArrayDeque<Runnable>();\r
- final Executor executor;\r
- Runnable active;\r
- \r
- public SerialExecutor(Executor executor) {\r
- this.executor = executor;\r
- }\r
- \r
- public synchronized void execute(final Runnable r) {\r
- tasks.offer(new Runnable() {\r
- public void run() {\r
- try {\r
- r.run();\r
- } finally {\r
- scheduleNext();\r
- }\r
- }\r
- });\r
- if (active == null) {\r
- scheduleNext();\r
- }\r
- }\r
- \r
- protected synchronized void scheduleNext() {\r
- if ((active = tasks.poll()) != null) {\r
- executor.execute(active);\r
- }\r
- }\r
- \r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 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.ua;
+
+import java.util.ArrayDeque;
+import java.util.Queue;
+import java.util.concurrent.Executor;
+
+/**
+ * The executor serializes the submission of tasks to a second executor,
+ * illustrating a composite executor.
+ *
+ * (This code is copied from the example in {@link Executor})
+ */
+public class SerialExecutor implements Executor {
+ final Queue<Runnable> tasks = new ArrayDeque<Runnable>();
+ final Executor executor;
+ Runnable active;
+
+ public SerialExecutor(Executor executor) {
+ this.executor = executor;
+ }
+
+ public synchronized void execute(final Runnable r) {
+ tasks.offer(new Runnable() {
+ public void run() {
+ try {
+ r.run();
+ } finally {
+ scheduleNext();
+ }
+ }
+ });
+ if (active == null) {
+ scheduleNext();
+ }
+ }
+
+ protected synchronized void scheduleNext() {
+ if ((active = tasks.poll()) != null) {
+ executor.execute(active);
+ }
+ }
+
+}