test/compiler/rtm/cli/TestUseRTMLockingOptionWithBiasedLocking.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 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 processing of UseRTMLocking and UseBiasedLocking
 *          options combination on CPU and VM with rtm support.
 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
 * @build TestUseRTMLockingOptionWithBiasedLocking
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+WhiteBoxAPI TestUseRTMLockingOptionWithBiasedLocking
 */

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 TestUseRTMLockingOptionWithBiasedLocking
        extends CommandLineOptionTest {
    private TestUseRTMLockingOptionWithBiasedLocking() {
        super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
    }

    @Override
    public void runTestCases() throws Throwable {
        String warningMessage
                = RTMGenericCommandLineOptionTest.RTM_BIASED_LOCKING_WARNING;
        // verify that we will not get a warning
        CommandLineOptionTest.verifySameJVMStartup(null,
                new String[] { warningMessage }, ExitCode.OK,
                CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMLocking", "-XX:-UseBiasedLocking");
        // verify that we will get a warning
        CommandLineOptionTest.verifySameJVMStartup(
                new String[] { warningMessage }, null, ExitCode.OK,
                CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
        // verify that UseBiasedLocking is false when we use rtm locking
        CommandLineOptionTest.verifyOptionValueForSameVM("UseBiasedLocking",
                "false", CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMLocking");
        // verify that we can't turn on biased locking when
        // using rtm locking
        CommandLineOptionTest.verifyOptionValueForSameVM("UseBiasedLocking",
                "false", CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS,
                "-XX:+UseRTMLocking", "-XX:+UseBiasedLocking");
    }

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