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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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).

 *

 * 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 that RTMAbortThreshold option affects

 *          amount of aborts after which abort ratio is calculated.

 * @build TestRTMAbortThreshold

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

 *                   -XX:+WhiteBoxAPI TestRTMAbortThreshold

 */

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 on RTMAbortThreshold option actually affects how soon

 * method will be deoptimized on high abort ratio.

 */

public class TestRTMAbortThreshold extends CommandLineOptionTest {

    private TestRTMAbortThreshold() {

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

    }

    @Override

    protected void runTestCases() throws Throwable {

        verifyAbortThreshold(false, 1);

        verifyAbortThreshold(false, 10);

        verifyAbortThreshold(false, 1000);

        verifyAbortThreshold(true, 1);

        verifyAbortThreshold(true, 10);

        verifyAbortThreshold(true, 1000);

    }

    private void verifyAbortThreshold(boolean useStackLock,

            long abortThreshold) throws Throwable {

        AbortProvoker provoker = AbortType.XABORT.provoker();

        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(

                provoker,

                "-XX:+UseRTMDeopt",

                "-XX:RTMAbortRatio=0",

                CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",

                        abortThreshold),

                CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",

                        useStackLock),

                "-XX:RTMTotalCountIncrRate=1",

                "-XX:+PrintPreciseRTMLockingStatistics",

                AbortProvoker.class.getName(),

                AbortType.XABORT.toString(),

                Boolean.toString(!useStackLock));

        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());

        Asserts.assertEQ(statistics.get(0).getTotalLocks(), abortThreshold,

                String.format("Expected that method with rtm lock elision was"

                        + " deoptimized after %d lock attempts",

                        abortThreshold));

    }

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

         new TestRTMAbortThreshold().test();

    }

}