/*

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

 *

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 * under the terms of the GNU General Public License version 2 only, as

 * 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 8032011

 * @summary biased locking's revoke_bias locks monitor in compiled frame with eliminated lock

 *

 * @run main/othervm -XX:-UseOnStackReplacement

 *      -XX:CompileCommand=dontinline,compiler.uncommontrap.TestLockEliminatedAtDeopt$A::m2

 *      -XX:-BackgroundCompilation -XX:BiasedLockingStartupDelay=0

 *      compiler.uncommontrap.TestLockEliminatedAtDeopt

 */

package compiler.uncommontrap;

public class TestLockEliminatedAtDeopt {

    static class A {

        void m() {

        }

        // This lock is not eliminated but biased to main thread on

        // first call

        synchronized void m2(boolean trap) {

            if (trap) {

                new B();

            }

        }

    }

    static class B extends A {

        void m() {

        }

    }

    static void m1(boolean trap) {

        A a = new A();

        // This lock is eliminated by c2

        synchronized(a) {

            a.m2(trap);

            a.m();

        }

    }

     public static void main(String[] args) {

        for (int i = 0; i < 20000; i++) {

            m1(false);

        }

        // Trigger uncommon trap in A.m2() (class unloaded) and

        // deoptimization of m1() (CHA invalidated). Uncommon trap

        // code locks monitor in m1's frame where's it's eliminated.

        m1(true);

    }

}