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.
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  23 
  24 /**
  25  * @test
  26  * @bug 8031320
  27  * @summary Verify processing of UseRTMLocking and UseBiasedLocking
  28  *          options combination on CPU and VM with rtm support.
  29  * @library /test/lib /
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os
  33  * @build sun.hotspot.WhiteBox
  34  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  35  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI
  38  *                   compiler.rtm.cli.TestUseRTMLockingOptionWithBiasedLocking
  39  */
  40 
  41 package compiler.rtm.cli;
  42 
  43 import jdk.test.lib.process.ExitCode;
  44 import jdk.test.lib.cli.CommandLineOptionTest;
  45 
  46 public class TestUseRTMLockingOptionWithBiasedLocking {
  47 
  48     public void runTestCases() throws Throwable {
  49         String warningMessage
  50                 = RTMGenericCommandLineOptionTest.RTM_BIASED_LOCKING_WARNING;
  51         String shouldPassMessage = "JVM startup should pass with both "
  52                 + "-XX:+UseRTMLocking and "
  53                 + "-XX:-UseBiasedLocking flags set without any warnings";
  54         // verify that we will not get a warning
  55         CommandLineOptionTest.verifySameJVMStartup(null,
  56                 new String[] { warningMessage }, shouldPassMessage,
  57                 shouldPassMessage, ExitCode.OK,
  58                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  59                 "-XX:+UseRTMLocking", "-XX:-UseBiasedLocking");
  60 
  61         // verify that we will get a warning
  62         CommandLineOptionTest.verifySameJVMStartup(
  63                 new String[] { warningMessage }, null,
  64                 "JVM startup should pass when both -XX:+UseRTMLocking and "
  65                         + "-XX:+UseBiasedLocking flags set",
  66                 "Flags -XX:+UseRTMLocking"
  67                         + " and -XX:+UseBiasedLocking conflicts. "
  68                         + "Warning should be shown.", ExitCode.OK,
  69                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  70                 "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
  71         // verify that UseBiasedLocking is false when we use rtm locking
  72         CommandLineOptionTest.verifyOptionValueForSameVM("UseBiasedLocking",
  73                 "false",
  74                 "Value of option 'UseBiasedLocking' should be false if"
  75                         + "-XX:+UseRTMLocking flag set.",
  76                 CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  77                 "-XX:+UseRTMLocking");
  78         // verify that we can't turn on biased locking when
  79         // using rtm locking
  80         CommandLineOptionTest
  81                 .verifyOptionValueForSameVM(
  82                         "UseBiasedLocking",
  83                         "false",
  84                         "Value of option 'UseBiasedLocking' should be false if"
  85                                 + "both -XX:+UseRTMLocking and "
  86                                 + "-XX:+UseBiasedLocking flags set.",
  87                         CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
  88                         "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
  89     }
  90 
  91     public static void main(String args[]) throws Throwable {
  92         new TestUseRTMLockingOptionWithBiasedLocking().runTestCases();
  93     }
  94 }