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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 rtm locking is used for inflated locks.

 * @build TestUseRTMForInflatedLocks

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

 *                   -XX:+WhiteBoxAPI TestUseRTMForInflatedLocks

 */

import java.util.List;

import com.oracle.java.testlibrary.*;

import com.oracle.java.testlibrary.cli.CommandLineOptionTest;

import com.oracle.java.testlibrary.cli.predicate.AndPredicate;

import rtm.*;

import rtm.predicate.SupportedCPU;

import rtm.predicate.SupportedVM;

/**

 * Test verifies that RTM-based lock elision could be used for inflated locks

 * by calling compiled method that use RTM-based lock elision and using

 * manually inflated lock.

 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times,

 * so total locks count should be the same.

 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0

 * is used. For more information abort that issue see

 * {@link TestUseRTMAfterLockInflation}.

 */

public class TestUseRTMForInflatedLocks extends CommandLineOptionTest {

    private TestUseRTMForInflatedLocks() {

        super(new AndPredicate(new SupportedCPU(), new SupportedVM()));

    }

    @Override

    protected void runTestCases() throws Throwable {

        AbortProvoker provoker = AbortType.XABORT.provoker();

        RTMLockingStatistics lock;

        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(

                provoker,

                "-XX:-UseRTMForStackLocks",

                "-XX:RTMTotalCountIncrRate=1",

                "-XX:RTMRetryCount=0",

                "-XX:+PrintPreciseRTMLockingStatistics",

                AbortProvoker.class.getName(),

                AbortType.XABORT.toString());

        outputAnalyzer.shouldHaveExitValue(0);

        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(

                provoker.getMethodWithLockName(), outputAnalyzer.getOutput());

        Asserts.assertEQ(statistics.size(), 1,

                "VM output should contain exactly one rtm locking statistics "

                + "entry for method " + provoker.getMethodWithLockName());

        lock = statistics.get(0);

        Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,

                "Total lock count should be greater or equal to "

                + AbortProvoker.DEFAULT_ITERATIONS);

    }

    public static void main(String args[]) throws Throwable {

        new TestUseRTMForInflatedLocks().test();

    }

}