Mercurial > hg > truffle
annotate test/compiler/6589834/Test_ia32.java @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | 4ca6dc0799b6 |
| children |
| rev | line source |
|---|---|
| 730 | 1 /* |
| 17524 | 2 * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved. |
| 730 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 730 | 22 */ |
| 23 | |
| 24 /** | |
| 25 * @test | |
| 26 * @bug 6589834 | |
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27 * @summary deoptimization problem with -XX:+DeoptimizeALot |
| 730 | 28 * |
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29 * @run main Test_ia32 |
| 730 | 30 */ |
| 31 | |
| 32 /*************************************************************************************** | |
| 33 NOTE: The bug shows up (with several "Bug!" message) even without the | |
| 34 flag -XX:+DeoptimizeALot. In a debug build, you may want to try | |
| 35 the flags -XX:+VerifyStack and -XX:+DeoptimizeALot to get more information. | |
| 36 ****************************************************************************************/ | |
| 37 import java.lang.reflect.Constructor; | |
| 38 | |
| 39 public class Test_ia32 { | |
| 40 | |
| 41 public static int NUM_THREADS = 100; | |
| 42 | |
| 43 public static int CLONE_LENGTH = 1000; | |
| 44 | |
| 45 public static void main(String[] args) throws InterruptedException, ClassNotFoundException { | |
| 46 | |
| 47 Reflector[] threads = new Reflector[NUM_THREADS]; | |
| 48 for (int i = 0; i < threads.length; i++) { | |
| 49 threads[i] = new Reflector(); | |
| 50 threads[i].start(); | |
| 51 } | |
| 52 | |
| 53 System.out.println("Give Reflector.run() some time to compile..."); | |
| 54 Thread.sleep(5000); | |
| 55 | |
| 56 System.out.println("Load RMISecurityException causing run() deoptimization"); | |
| 57 ClassLoader.getSystemClassLoader().loadClass("java.rmi.RMISecurityException"); | |
| 58 | |
| 59 for (Reflector thread : threads) | |
| 60 thread.requestStop(); | |
| 61 | |
| 62 for (Reflector thread : threads) | |
| 63 try { | |
| 64 thread.join(); | |
| 65 } catch (InterruptedException e) { | |
| 66 System.out.println(e); | |
| 67 } | |
| 68 | |
| 69 } | |
| 70 | |
| 71 } | |
| 72 | |
| 73 class Reflector extends Thread { | |
| 74 | |
| 75 volatile boolean _doSpin = true; | |
| 76 | |
| 77 Test_ia32[] _tests; | |
| 78 | |
| 79 Reflector() { | |
| 80 _tests = new Test_ia32[Test_ia32.CLONE_LENGTH]; | |
| 81 for (int i = 0; i < _tests.length; i++) { | |
| 82 _tests[i] = new Test_ia32(); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 static int g(int i1, int i2, Test_ia32[] arr, int i3, int i4) { | |
| 87 | |
| 88 if (!(i1==1 && i2==2 && i3==3 && i4==4)) { | |
| 89 System.out.println("Bug!"); | |
| 90 } | |
| 91 | |
| 92 return arr.length; | |
| 93 } | |
| 94 | |
| 95 static int f(Test_ia32[] arr) { | |
| 96 return g(1, 2, arr.clone(), 3, 4); | |
| 97 } | |
| 98 | |
| 99 @Override | |
| 100 public void run() { | |
| 101 Constructor[] ctrs = null; | |
| 102 Class<Test_ia32> klass = Test_ia32.class; | |
| 103 try { | |
| 104 ctrs = klass.getConstructors(); | |
| 105 } catch (SecurityException e) { | |
| 106 System.out.println(e); | |
| 107 } | |
| 108 | |
| 109 try { | |
| 110 while (_doSpin) { | |
| 111 if (f(_tests) < 0) | |
| 112 System.out.println("return value usage"); | |
| 113 } | |
| 114 } catch (NullPointerException e) { | |
| 115 e.printStackTrace(); | |
| 116 } | |
| 117 | |
| 118 System.out.println(this + " - stopped."); | |
| 119 } | |
| 120 | |
| 121 public void requestStop() { | |
| 122 System.out.println(this + " - stop requested."); | |
| 123 _doSpin = false; | |
| 124 } | |
| 125 | |
| 126 } |