| /* |
| * Copyright (c) 2004, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 5011189 8004928 |
| * @summary Unit test for java.lang.management.CompilationMXBean |
| * |
| * @run main/othervm -Xcomp -Xbatch 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.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"); |
| } |
| } |