1 /* 2 * Copyright (c) 2014, 2015, 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 * @summary stressing code cache by forcing unexpected deoptimizations 28 * @library /testlibrary /test/lib / 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 * 32 * @build compiler.codecache.stress.UnexpectedDeoptimizationTest 33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 36 * -XX:+WhiteBoxAPI -XX:-DeoptimizeRandom 37 * -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method 38 * -XX:-SegmentedCodeCache 39 * compiler.codecache.stress.UnexpectedDeoptimizationTest 40 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 41 * -XX:+WhiteBoxAPI -XX:-DeoptimizeRandom 42 * -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method 43 * -XX:+SegmentedCodeCache 44 * compiler.codecache.stress.UnexpectedDeoptimizationTest 45 */ 46 47 package compiler.codecache.stress; 48 49 public class UnexpectedDeoptimizationTest implements Runnable { 50 51 public static void main(String[] args) { 52 new CodeCacheStressRunner(new UnexpectedDeoptimizationTest()).runTest(); 53 } 54 55 @Override 56 public void run() { 57 Helper.WHITE_BOX.deoptimizeFrames(Helper.RNG.nextBoolean()); 58 } 59 60 }