TestUseRTMDeoptOptionOnUnsupportedConfig.java

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/**
 * @test
 * @bug 8031320
 * @summary Verify UseRTMDeopt option processing on CPUs or OSs without rtm support
 *          or on VMs without rtm locking support.
 * @library /test/lib /
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @requires vm.flagless
 * @requires !vm.rtm.cpu & vm.rtm.compiler
 * @run driver compiler.rtm.cli.TestUseRTMDeoptOptionOnUnsupportedConfig
 */

package compiler.rtm.cli;

import jdk.test.lib.cli.CommandLineOptionTest;

public class TestUseRTMDeoptOptionOnUnsupportedConfig
        extends RTMGenericCommandLineOptionTest {
    private static final String DEFAULT_VALUE = "false";

    private TestUseRTMDeoptOptionOnUnsupportedConfig() {
        super("UseRTMDeopt", true, false,
                TestUseRTMDeoptOptionOnUnsupportedConfig.DEFAULT_VALUE,
                "true");
    }

    @Override
    protected void runX86SupportedVMTestCases() throws Throwable {
        super.verifyJVMStartup();
        // verify default value
        CommandLineOptionTest.verifyOptionValueForSameVM(optionName,
                defaultValue, String.format("'%s' should have '%s' "
                        + "default value on unsupported configs.",
                        optionName, DEFAULT_VALUE));
        // verify that until RTMLocking is not used, value
        // will be set to default false.
        CommandLineOptionTest.verifyOptionValueForSameVM(optionName,
                defaultValue, String.format("'%s' should be off on unsupported"
                        + " configs even if '-XX:+%s' flag set", optionName,
                        optionName),
                "-XX:+UseRTMDeopt");
    }

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