82 lines
2.7 KiB
Java
82 lines
2.7 KiB
Java
/*
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* Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 5011189 8004928
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* @summary Unit test for java.lang.management.CompilationMXBean
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*
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* @run main/othervm -Xcomp -Xbatch Basic
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*/
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import java.lang.management.*;
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public class Basic {
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public static void main(String args[]) {
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CompilationMXBean mb = ManagementFactory.getCompilationMXBean();
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if (mb == null) {
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System.out.println("The virtual machine doesn't have a compilation system");
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return;
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}
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// Exercise getName() method
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System.out.println(mb.getName());
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// If compilation time monitoring isn't supported then we are done
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if (!mb.isCompilationTimeMonitoringSupported()) {
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System.out.println("Compilation time monitoring not supported.");
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return;
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}
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// Exercise getTotalCompilationTime();
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long time;
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// If the compiler has already done some work then we are done
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time = mb.getTotalCompilationTime();
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if (time > 0) {
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printCompilationTime(time);
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return;
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}
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// Now the hard bit - we do random work on the assumption
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// that the compiler will be used.
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System.out.println("Doing random work...");
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java.util.Locale.getAvailableLocales();
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java.security.Security.getProviders();
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java.nio.channels.spi.SelectorProvider.provider();
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time = mb.getTotalCompilationTime();
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if (time > 0) {
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printCompilationTime(time);
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} else {
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throw new RuntimeException("getTimeCompilionTime returns 0");
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}
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}
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static void printCompilationTime(long time) {
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System.out.println("Total compilation time: " + time + " ms");
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}
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}
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