Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils.datastructures / src / org / simantics / utils / datastructures / TimingUtil.java

diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/TimingUtil.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/TimingUtil.java
new file mode 100644 (file)
index 0000000..ad9bb81
--- /dev/null
+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/TimingUtil.java
@@ -0,0 +1,69 @@
+/*******************************************************************************\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
+package org.simantics.utils.datastructures;\r
+\r
+import java.io.PrintStream;\r
+import java.util.concurrent.TimeUnit;\r
+\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public final class TimingUtil {\r
+\r
+    public abstract static class NamedRunnable implements Runnable {\r
+        String name;\r
+        public NamedRunnable(String name) {\r
+            this.name = name;\r
+        }\r
+        @Override\r
+        public String toString() {\r
+            return name;\r
+        }\r
+    }\r
+\r
+    public static class PrintCallback implements BinaryCallback<Long, TimeUnit> {\r
+        String task;\r
+        PrintStream stream;\r
+        PrintCallback(String task) {\r
+            this(task, System.out);\r
+        }\r
+        PrintCallback(String task, PrintStream stream) {\r
+            this.task = task;\r
+            this.stream = stream;\r
+        }\r
+        @Override\r
+        public void run(Long arg1, TimeUnit arg2) {\r
+            stream.println(task + " took " + arg1 + " " + arg2.toString());\r
+        }\r
+    };\r
+\r
+    public static void time(Runnable runnable) {\r
+        time(runnable, System.out);\r
+    }\r
+\r
+    public static void time(Runnable runnable, PrintStream stream) {\r
+        time(runnable, TimeUnit.MILLISECONDS, new PrintCallback(runnable.toString(), stream));\r
+    }\r
+\r
+    public static void time(Runnable runnable, TimeUnit reportTimeUnit, PrintStream stream) {\r
+        time(runnable, reportTimeUnit, new PrintCallback(runnable.toString(), stream));\r
+    }\r
+\r
+    public static void time(Runnable runnable, TimeUnit reportTimeUnit, BinaryCallback<Long, TimeUnit> result) {\r
+        long start = System.nanoTime();\r
+        runnable.run();\r
+        long end = System.nanoTime();\r
+        result.run(reportTimeUnit.convert(end-start, TimeUnit.NANOSECONDS), reportTimeUnit);\r
+    }\r
+\r
+}\r