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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 NoRTMLockEliding option could be applied to

 *          specified method and that such method will not use rtm.

 * @build TestNoRTMLockElidingOption

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

 *                   -XX:+WhiteBoxAPI TestNoRTMLockElidingOption

 */

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 method tagged with option <i>NoRTMLockElidingOption</i>

 * will not use RTM-based lock elision.

 * Test invokes compiled method and checks that no deoptimization with

 * <i>rtm_state_change</i> reason had happened and that that VM output

 * does not contain RTM locking statistics for compiled method.

 */

public class TestNoRTMLockElidingOption extends CommandLineOptionTest {

    private TestNoRTMLockElidingOption() {

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

    }

    @Override

    public void runTestCases() throws Throwable {

        verifyOption(false);

        verifyOption(true);

    }

    public void verifyOption(boolean useStackLock) throws Throwable {

        AbortProvoker provoker = AbortType.XABORT.provoker();

        String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",

                (useStackLock ? "use" : "no"));

        String methodOption = String.format("-XX:CompileCommand=option," +

                "%s,NoRTMLockEliding", provoker.getMethodWithLockName());

        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(

                logFileName,

                provoker,

                CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",

                        useStackLock),

                methodOption,

                "-XX:RTMTotalCountIncrRate=1",

                "-XX:+UseRTMDeopt",

                "-XX:+PrintPreciseRTMLockingStatistics",

                AbortProvoker.class.getName(),

                AbortType.XABORT.toString(),

                Boolean.toString(!useStackLock)

        );

        outputAnalyzer.shouldHaveExitValue(0);

        int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName);

        Asserts.assertEQ(firedTraps, 0,

                "No deoptimizations with rtm_state_change reason are expected");

        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(

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

        Asserts.assertEQ(statistics.size(), 0,

                "VM output should not contain RTM locking statistics entries "

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

    }

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

        new TestNoRTMLockElidingOption().test();

    }

}