Mercurial > hg > truffle
annotate test/compiler/6589834/Test_ia32.java @ 21543:93c50cefb9e8
moved GraalInternalError to com.oracle.jvmci.common and renamed it to JVMCIError (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 25 May 2015 23:30:34 +0200 |
parents | 89152779163c |
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rev | line source |
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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 } |