-/*******************************************************************************\r
- * Copyright (c) 2007, 2012 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
-package org.simantics.browsing.ui.swt.internal;\r
-\r
-import java.util.concurrent.ExecutorService;\r
-import java.util.concurrent.Executors;\r
-import java.util.concurrent.LinkedBlockingQueue;\r
-import java.util.concurrent.ThreadFactory;\r
-import java.util.concurrent.ThreadPoolExecutor;\r
-import java.util.concurrent.TimeUnit;\r
-import java.util.concurrent.atomic.AtomicInteger;\r
-\r
-import org.simantics.browsing.ui.swt.Activator;\r
-\r
-/**\r
- * Pooled thread work executor for GraphExplorerImpl internal use only.\r
- * \r
- * Started by {@link Activator}.\r
- * \r
- * @author Tuukka Lehtonen\r
- */\r
-public final class Threads {\r
-\r
- private static ExecutorService executor;\r
-\r
- public static synchronized void initialize() {\r
- if (executor == null) {\r
- initializeExecutor();\r
- }\r
- }\r
-\r
- public static synchronized void shutdown() {\r
- if (executor != null) {\r
- executor.shutdown();\r
- executor = null;\r
- }\r
- }\r
-\r
- private static ExecutorService initializeExecutor() {\r
- if (executor == null) {\r
- final ThreadGroup tg = new ThreadGroup("GraphExplorer-Worker-Group");\r
- final AtomicInteger counter = new AtomicInteger(0);\r
- ThreadFactory tf = new ThreadFactory() {\r
- @Override\r
- public Thread newThread(Runnable r) {\r
- Thread t = new Thread(tg, r, "GraphExplorer-Worker-"+(counter.incrementAndGet()));\r
- if (!t.isDaemon())\r
- t.setDaemon(true);\r
- if (t.getPriority() != Thread.NORM_PRIORITY)\r
- t.setPriority(Thread.NORM_PRIORITY);\r
- return t;\r
- }\r
- };\r
-\r
-// int maxPoolSize = Math.min(Math.max(2, ThreadUtils.CORES), 8);\r
- int maxPoolSize = 1;\r
- \r
- if(maxPoolSize == 1) {\r
- \r
- executor = Executors.newSingleThreadExecutor(tf);\r
- \r
- } else {\r
-\r
- executor =\r
- new ThreadPoolExecutor(maxPoolSize / 2, maxPoolSize,\r
- // Don't let the threads die too soon\r
- 30L, TimeUnit.SECONDS,\r
- // LinkedBlockingQueue to allow queueing of tasks\r
- // even when all workers are busy.\r
- new LinkedBlockingQueue<Runnable>(),\r
- tf);\r
- \r
- }\r
- \r
- }\r
- return executor;\r
- }\r
-\r
- public static ExecutorService getExecutor() {\r
- ExecutorService service = executor;\r
- if (service == null)\r
- throw new IllegalStateException("executor not initialized");\r
- return service;\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 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.browsing.ui.swt.internal;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.simantics.browsing.ui.swt.Activator;
+
+/**
+ * Pooled thread work executor for GraphExplorerImpl internal use only.
+ *
+ * Started by {@link Activator}.
+ *
+ * @author Tuukka Lehtonen
+ */
+public final class Threads {
+
+ private static ExecutorService executor;
+
+ public static synchronized void initialize() {
+ if (executor == null) {
+ initializeExecutor();
+ }
+ }
+
+ public static synchronized void shutdown() {
+ if (executor != null) {
+ executor.shutdown();
+ executor = null;
+ }
+ }
+
+ private static ExecutorService initializeExecutor() {
+ if (executor == null) {
+ final ThreadGroup tg = new ThreadGroup("GraphExplorer-Worker-Group");
+ final AtomicInteger counter = new AtomicInteger(0);
+ ThreadFactory tf = new ThreadFactory() {
+ @Override
+ public Thread newThread(Runnable r) {
+ Thread t = new Thread(tg, r, "GraphExplorer-Worker-"+(counter.incrementAndGet()));
+ if (!t.isDaemon())
+ t.setDaemon(true);
+ if (t.getPriority() != Thread.NORM_PRIORITY)
+ t.setPriority(Thread.NORM_PRIORITY);
+ return t;
+ }
+ };
+
+// int maxPoolSize = Math.min(Math.max(2, ThreadUtils.CORES), 8);
+ int maxPoolSize = 1;
+
+ if(maxPoolSize == 1) {
+
+ executor = Executors.newSingleThreadExecutor(tf);
+
+ } else {
+
+ executor =
+ new ThreadPoolExecutor(maxPoolSize / 2, maxPoolSize,
+ // Don't let the threads die too soon
+ 30L, TimeUnit.SECONDS,
+ // LinkedBlockingQueue to allow queueing of tasks
+ // even when all workers are busy.
+ new LinkedBlockingQueue<Runnable>(),
+ tf);
+
+ }
+
+ }
+ return executor;
+ }
+
+ public static ExecutorService getExecutor() {
+ ExecutorService service = executor;
+ if (service == null)
+ throw new IllegalStateException("executor not initialized");
+ return service;
+ }
+
+}
Code Review / simantics / platform.git / blobdiff