1 /*
   2  * Copyright (c) 2014, 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 /**
  26  * @test
  27  * @bug 8031320
  28  * @summary Verify processing of UseRTMLocking and UseBiasedLocking
  29  *          options combination on CPU and VM with rtm support.
  30  * @library /test/lib /
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  *
  34  * @build sun.hotspot.WhiteBox
  35  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  36  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  37  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  38  *                   -XX:+WhiteBoxAPI
  39  *                   compiler.rtm.cli.TestUseRTMLockingOptionWithBiasedLocking
  40  */
  41 
  42 package compiler.rtm.cli;
  43 
  44 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  45 import compiler.testlibrary.rtm.predicate.SupportedOS;
  46 import compiler.testlibrary.rtm.predicate.SupportedVM;
  47 import jdk.test.lib.process.ExitCode;
  48 import jdk.test.lib.cli.CommandLineOptionTest;
  49 import jdk.test.lib.cli.predicate.AndPredicate;
  50 
  51 public class TestUseRTMLockingOptionWithBiasedLocking
  52         extends CommandLineOptionTest {
  53     private TestUseRTMLockingOptionWithBiasedLocking() {
  54         super(new AndPredicate(new SupportedCPU(), new SupportedOS(), new SupportedVM()));
  55     }
  56 
  57     @Override
  58     public void runTestCases() throws Throwable {
  59         String warningMessage
  60                 = RTMGenericCommandLineOptionTest.RTM_BIASED_LOCKING_WARNING;
  61         String shouldPassMessage = "JVM startup should pass with both "
  62                 + "-XX:+UseRTMLocking and "
  63                 + "-XX:-UseBiasedLocking flags set without any warnings";
  64         // verify that we will not get a warning
  65         CommandLineOptionTest.verifySameJVMStartup(null,
  66                 new String[] { warningMessage }, shouldPassMessage,
  67                 shouldPassMessage, ExitCode.OK,
  68                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  69                 "-XX:+UseRTMLocking", "-XX:-UseBiasedLocking");
  70 
  71         // verify that we will get a warning
  72         CommandLineOptionTest.verifySameJVMStartup(
  73                 new String[] { warningMessage }, null,
  74                 "JVM startup should pass when both -XX:+UseRTMLocking and "
  75                         + "-XX:+UseBiasedLocking flags set",
  76                 "Flags -XX:+UseRTMLocking"
  77                         + " and -XX:+UseBiasedLocking conflicts. "
  78                         + "Warning should be shown.", ExitCode.OK,
  79                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  80                 "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
  81         // verify that UseBiasedLocking is false when we use rtm locking
  82         CommandLineOptionTest.verifyOptionValueForSameVM("UseBiasedLocking",
  83                 "false",
  84                 "Value of option 'UseBiasedLocking' should be false if"
  85                         + "-XX:+UseRTMLocking flag set.",
  86                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  87                 "-XX:+UseRTMLocking");
  88         // verify that we can't turn on biased locking when
  89         // using rtm locking
  90         CommandLineOptionTest
  91                 .verifyOptionValueForSameVM(
  92                         "UseBiasedLocking",
  93                         "false",
  94                         "Value of option 'UseBiasedLocking' should be false if"
  95                                 + "both -XX:+UseRTMLocking and "
  96                                 + "-XX:+UseBiasedLocking flags set.",
  97                         CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  98                         "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
  99     }
 100 
 101     public static void main(String args[]) throws Throwable {
 102         new TestUseRTMLockingOptionWithBiasedLocking().test();
 103     }
 104 }