Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils.thread / src / org / simantics / utils / threads / ExecutorWorker.java

diff --git a/bundles/org.simantics.utils.thread/src/org/simantics/utils/threads/ExecutorWorker.java b/bundles/org.simantics.utils.thread/src/org/simantics/utils/threads/ExecutorWorker.java
new file mode 100644 (file)
index 0000000..63cacd9
--- /dev/null
+++ b/bundles/org.simantics.utils.thread/src/org/simantics/utils/threads/ExecutorWorker.java
@@ -0,0 +1,65 @@
+/*******************************************************************************\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
+ *\r
+ * @author Toni Kalajainen\r
+ */\r
+package org.simantics.utils.threads;\r
+\r
+import java.util.concurrent.Callable;\r
+import java.util.concurrent.ScheduledFuture;\r
+import java.util.concurrent.ScheduledThreadPoolExecutor;\r
+import java.util.concurrent.TimeUnit;\r
+\r
+\r
+public class ExecutorWorker {\r
+       \r
+       private static ExecutorWorker instance;\r
+       \r
+       static class DelayedExecution implements Comparable<DelayedExecution> {\r
+               Executable executable;\r
+               long executionTime;\r
+               @Override\r
+               public int compareTo(DelayedExecution o) {\r
+                       if (o.executionTime<executionTime) return -1;\r
+                       if (o.executionTime>executionTime) return 1;\r
+                       return 0;\r
+               }\r
+       }\r
+\r
+       public static ExecutorWorker getInstance()\r
+       {\r
+               if (instance == null)\r
+                       instance = new ExecutorWorker();\r
+               return instance;\r
+       }\r
+       \r
+       ExecutorWorker() {              \r
+       }       \r
+\r
+       ScheduledThreadPoolExecutor pool = new ScheduledThreadPoolExecutor(1);\r
+       \r
+       public synchronized ScheduledFuture<Object> timerExec(final Executable executable, int delay)\r
+       {\r
+               Callable<Object> c = new Callable<Object>() {\r
+                       @Override\r
+                       public Object call() throws Exception {\r
+                // FIXME: executable.runnable gets called twice!\r
+                               ThreadUtils.asyncExec(executable.threadAccess, executable.runnable);\r
+                               //executable.runnable.run();\r
+                               return null;\r
+                       }\r
+               };              \r
+               return pool.schedule(c, delay, TimeUnit.MILLISECONDS);\r
+       }\r
+\r
+}\r