1 /*
   2  * Copyright (c) 2014, 2015, 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 /testlibrary /../../test/lib /compiler/testlibrary
  31  * @modules java.base/sun.misc
  32  *          java.management
  33  * @build TestUseRTMLockingOptionWithBiasedLocking
  34  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  35  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI TestUseRTMLockingOptionWithBiasedLocking
  38  */
  39 
  40 import com.oracle.java.testlibrary.*;
  41 import com.oracle.java.testlibrary.cli.*;
  42 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
  43 import rtm.predicate.SupportedCPU;
  44 import rtm.predicate.SupportedVM;
  45 
  46 public class TestUseRTMLockingOptionWithBiasedLocking
  47         extends CommandLineOptionTest {
  48     private TestUseRTMLockingOptionWithBiasedLocking() {
  49         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  50     }
  51 
  52     @Override
  53     public void runTestCases() throws Throwable {
  54         String warningMessage
  55                 = RTMGenericCommandLineOptionTest.RTM_BIASED_LOCKING_WARNING;
  56         String shouldPassMessage = "JVM startup should pass with both "
  57                 + "-XX:+UseRTMLocking and "
  58                 + "-XX:-UseBiasedLocking flags set without any warnings";
  59         // verify that we will not get a warning
  60         CommandLineOptionTest.verifySameJVMStartup(null,
  61                 new String[] { warningMessage }, shouldPassMessage,
  62                 shouldPassMessage, ExitCode.OK,
  63                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  64                 "-XX:+UseRTMLocking", "-XX:-UseBiasedLocking");
  65 
  66         // verify that we will get a warning
  67         CommandLineOptionTest.verifySameJVMStartup(
  68                 new String[] { warningMessage }, null,
  69                 "JVM startup should pass when both -XX:+UseRTMLocking and "
  70                         + "-XX:+UseBiasedLocking flags set",
  71                 "Flags -XX:+UseRTMLocking"
  72                         + " and -XX:+UseBiasedLocking conflicts. "
  73                         + "Warning should be shown.", ExitCode.OK,
  74                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  75                 "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
  76         // verify that UseBiasedLocking is false when we use rtm locking
  77         CommandLineOptionTest.verifyOptionValueForSameVM("UseBiasedLocking",
  78                 "false",
  79                 "Value of option 'UseBiasedLocking' should be false if"
  80                         + "-XX:+UseRTMLocking flag set.",
  81                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  82                 "-XX:+UseRTMLocking");
  83         // verify that we can't turn on biased locking when
  84         // using rtm locking
  85         CommandLineOptionTest
  86                 .verifyOptionValueForSameVM(
  87                         "UseBiasedLocking",
  88                         "false",
  89                         "Value of option 'UseBiasedLocking' should be false if"
  90                                 + "both -XX:+UseRTMLocking and "
  91                                 + "-XX:+UseBiasedLocking flags set.",
  92                         CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  93                         "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
  94     }
  95 
  96     public static void main(String args[]) throws Throwable {
  97         new TestUseRTMLockingOptionWithBiasedLocking().test();
  98     }
  99 }