1 /*

     2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

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

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

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

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 /*

    26  * @test UnexpectedDeoptimizationTest

    27  * @library /testlibrary /../../test/lib

    28  * @build UnexpectedDeoptimizationTest

    29  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    30  *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

    32  *                   -XX:CompileCommand=dontinline,Helper$TestCase::method

    33  *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache -XX:-DeoptimizeRandom

    34  *                   UnexpectedDeoptimizationTest

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

    36  *                   -XX:CompileCommand=dontinline,Helper$TestCase::method

    37  *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache -XX:-DeoptimizeRandom

    38  *                   UnexpectedDeoptimizationTest

    39  * @summary stressing code cache by forcing unexpected deoptimizations

    40  */

    41 public class UnexpectedDeoptimizationTest implements Runnable {

    42 

    43     public static void main(String[] args) {

    44         new CodeCacheStressRunner(new UnexpectedDeoptimizationTest()).runTest();

    45     }

    46 

    47     @Override

    48     public void run() {

    49         Helper.WHITE_BOX.deoptimizeFrames(Helper.RNG.nextBoolean());

    50     }

    51 

    52 }