jdk/test/java/lang/management/CompilationMXBean/Basic.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/management/CompilationMXBean/Basic.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 5011189
+ * @summary Unit test for java.lang.management.CompilationMXBean
+ *
+ * @run main/othervm -Xcomp -Xbatch -Djava.awt.headless=true Basic
+ */
+import java.lang.management.*;
+
+public class Basic {
+
+    public static void main(String args[]) {
+        CompilationMXBean mb = ManagementFactory.getCompilationMXBean();
+        if (mb == null) {
+            System.out.println("The virtual machine doesn't have a compilation system");
+            return;
+        }
+
+        // Exercise getName() method
+        System.out.println(mb.getName());
+
+        // If compilation time monitoring isn't supported then we are done
+        if (!mb.isCompilationTimeMonitoringSupported()) {
+            System.out.println("Compilation time monitoring not supported.");
+            return;
+        }
+
+        // Exercise getTotalCompilationTime();
+        long time;
+
+        // If the compiler has already done some work then we are done
+        time = mb.getTotalCompilationTime();
+        if (time > 0) {
+            printCompilationTime(time);
+            return;
+        }
+
+        // Now the hard bit - we do random work on the assumption
+        // that the compiler will be used.
+
+        System.out.println("Doing random work...");
+
+        java.util.Locale.getAvailableLocales();
+        java.security.Security.getProviders();
+        java.awt.Toolkit.getDefaultToolkit();
+        javax.swing.UIManager.getInstalledLookAndFeels();
+        java.nio.channels.spi.SelectorProvider.provider();
+
+        time = mb.getTotalCompilationTime();
+        if (time > 0) {
+            printCompilationTime(time);
+        } else {
+            throw new RuntimeException("getTimeCompilionTime returns 0");
+        }
+    }
+
+    static void printCompilationTime(long time) {
+        System.out.println("Total compilation time: " + time + " ms");
+    }
+}