1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.    See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8149383
  27  * @summary -Xlog:biasedlocking should have logging from statements in the source code
  28  * @library /testlibrary
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  * @build jdk.test.lib.OutputAnalyzer jdk.test.lib.ProcessTools
  32  * @run driver BiasedLockingTest
  33  */
  34 
  35 import jdk.test.lib.OutputAnalyzer;
  36 import jdk.test.lib.ProcessTools;
  37 
  38 public class BiasedLockingTest {
  39     static void analyzeOutputOn(ProcessBuilder pb) throws Exception {
  40         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  41         output.shouldContain("Biased locking enabled");
  42         output.shouldHaveExitValue(0);
  43     }
  44 
  45     static void analyzeOutputOff(ProcessBuilder pb) throws Exception {
  46         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  47         output.shouldNotContain("[biasedlocking]");
  48         output.shouldHaveExitValue(0);
  49     }
  50 
  51     public static void main(String[] args) throws Exception {
  52         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:biasedlocking",
  53                                                                   "-XX:BiasedLockingStartupDelay=0",
  54                                                                   InnerClass.class.getName());
  55         analyzeOutputOn(pb);
  56 
  57         pb = ProcessTools.createJavaProcessBuilder("-XX:+TraceBiasedLocking",
  58                                                    "-XX:BiasedLockingStartupDelay=0",
  59                                                    InnerClass.class.getName());
  60         analyzeOutputOn(pb);
  61 
  62         pb = ProcessTools.createJavaProcessBuilder("-Xlog:biasedlocking=off",
  63                                                    "-XX:BiasedLockingStartupDelay=0",
  64                                                    InnerClass.class.getName());
  65         analyzeOutputOff(pb);
  66 
  67         pb = ProcessTools.createJavaProcessBuilder("-XX:-TraceBiasedLocking",
  68                                                    "-XX:BiasedLockingStartupDelay=0",
  69                                                    InnerClass.class.getName());
  70         analyzeOutputOff(pb);
  71     }
  72 
  73     public static class InnerClass {
  74         public static void main(String[] args) {
  75             System.out.println("Biased Locking test");
  76         }
  77     }
  78 }