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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/**
 * @test
 * @bug 8031320
 * @summary Verify that RTMRetryCount affects actual amount of retries.
 * @library /testlibrary /test/lib /compiler/testlibrary
 * @modules java.base/sun.misc
 *          java.management
 * @build TestRTMRetryCount
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+WhiteBoxAPI TestRTMRetryCount
 */

import java.util.List;

import jdk.test.lib.*;
import jdk.test.lib.cli.CommandLineOptionTest;
import jdk.test.lib.cli.predicate.AndPredicate;
import rtm.*;
import rtm.predicate.SupportedCPU;
import rtm.predicate.SupportedVM;

/**
 * Test verifies that RTMRetryCount option actually affects amount of
 * retries on lock busy.
 */
public class TestRTMRetryCount extends CommandLineOptionTest {
    /**
     * Time in ms, during which busy lock will be locked.
     */
    private static final int LOCKING_TIME = 5000;
    private static final boolean INFLATE_MONITOR = true;

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

    @Override
    protected void runTestCases() throws Throwable {
        verifyRTMRetryCount(0);
        verifyRTMRetryCount(1);
        verifyRTMRetryCount(5);
        verifyRTMRetryCount(10);
    }

    private void verifyRTMRetryCount(int retryCount) throws Throwable {
        CompilableTest busyLock = new BusyLock();
        long expectedAborts = retryCount + 1L;

        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
                busyLock,
                "-XX:-UseRTMXendForLockBusy",
                "-XX:RTMTotalCountIncrRate=1",
                CommandLineOptionTest.prepareNumericFlag("RTMRetryCount",
                        retryCount),
                "-XX:RTMTotalCountIncrRate=1",
                "-XX:+PrintPreciseRTMLockingStatistics",
                BusyLock.class.getName(),
                Boolean.toString(TestRTMRetryCount.INFLATE_MONITOR),
                Integer.toString(TestRTMRetryCount.LOCKING_TIME)
        );

        outputAnalyzer.shouldHaveExitValue(0);

        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
                busyLock.getMethodWithLockName(), outputAnalyzer.getStdout());

        Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
                + "exactly one rtm locking statistics entry for method "
                + busyLock.getMethodWithLockName());

        Asserts.assertEQ(statistics.get(0).getTotalAborts(), expectedAborts,
                String.format("It is expected to get %d aborts",
                        expectedAborts));
    }

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