jdk-24/hotspot/test/compiler/rtm/cli/TestUseRTMForStackLocksOptionOnSupportedConfig.java

/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/**
 * @test
 * @bug 8031320
 * @summary Verify UseRTMForStackLocks option processing on CPU with
 *          rtm support when VM supports rtm locking.
 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
 * @build TestUseRTMForStackLocksOptionOnSupportedConfig
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+WhiteBoxAPI
 *                   TestUseRTMForStackLocksOptionOnSupportedConfig
 */

import com.oracle.java.testlibrary.*;
import com.oracle.java.testlibrary.cli.*;
import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
import rtm.predicate.SupportedCPU;
import rtm.predicate.SupportedVM;

public class TestUseRTMForStackLocksOptionOnSupportedConfig
        extends CommandLineOptionTest {
    private static final String DEFAULT_VALUE = "false";

    private TestUseRTMForStackLocksOptionOnSupportedConfig() {
        super(new AndPredicate(new SupportedVM(), new SupportedCPU()));
    }

    @Override
    public void runTestCases() throws Throwable {
        String errorMessage
                = CommandLineOptionTest.getExperimentalOptionErrorMessage(
                "UseRTMForStackLocks");
        String warningMessage
                = RTMGenericCommandLineOptionTest.RTM_FOR_STACK_LOCKS_WARNING;

        CommandLineOptionTest.verifySameJVMStartup(
                new String[] { errorMessage }, null, ExitCode.FAIL,
                "-XX:+UseRTMForStackLocks");
        // verify that we get a warning when trying to use rtm for stack
        // lock, but not using rtm locking.
        CommandLineOptionTest.verifySameJVMStartup(
                new String[] { warningMessage }, null, ExitCode.OK,
                CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMForStackLocks",
                "-XX:-UseRTMLocking");
        // verify that we don't get a warning when no using rtm for stack
        // lock and not using rtm locking.
        CommandLineOptionTest.verifySameJVMStartup(null,
                new String[] { warningMessage }, ExitCode.OK,
                CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:-UseRTMForStackLocks",
                "-XX:-UseRTMLocking");
        // verify that we don't get a warning when using rtm for stack
        // lock and using rtm locking.
        CommandLineOptionTest.verifySameJVMStartup(null,
                new String[] { warningMessage }, ExitCode.OK,
                CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMForStackLocks",
                "-XX:+UseRTMLocking");
        // verify that default value if false
        CommandLineOptionTest.verifyOptionValueForSameVM("UseRTMForStackLocks",
                TestUseRTMForStackLocksOptionOnSupportedConfig.DEFAULT_VALUE,
                CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS);
        // verify that default value is false even with +UseRTMLocking
        CommandLineOptionTest.verifyOptionValueForSameVM("UseRTMForStackLocks",
                TestUseRTMForStackLocksOptionOnSupportedConfig.DEFAULT_VALUE,
                CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMLocking");
        // verify that we can turn the option on
        CommandLineOptionTest.verifyOptionValueForSameVM("UseRTMForStackLocks",
                "true", CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMLocking", "-XX:+UseRTMForStackLocks");
    }

    public static void main(String args[]) throws Throwable {
        new TestUseRTMForStackLocksOptionOnSupportedConfig().test();
    }
}