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 }