Mercurial > hg > truffle
comparison test/compiler/jsr292/ConcurrentClassLoadingTest.java @ 12163:74608df95ba3
8022595: JSR292: deadlock during class loading of MethodHandles, MethodHandleImpl & MethodHandleNatives
Reviewed-by: kvn, coleenp, dholmes
author | vlivanov |
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date | Mon, 26 Aug 2013 17:41:05 +0400 |
parents | |
children | cdf20166ec45 |
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12162:e47de6dfec5d | 12163:74608df95ba3 |
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1 /* | |
2 * Copyright (c) 2013, 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 * @test | |
26 * @bug 8022595 | |
27 * @summary JSR292: deadlock during class loading of MethodHandles, MethodHandleImpl & MethodHandleNatives | |
28 * | |
29 * @run main/othervm ConcurrentClassLoadingTest | |
30 */ | |
31 import java.util.*; | |
32 import java.util.concurrent.BrokenBarrierException; | |
33 import java.util.concurrent.CyclicBarrier; | |
34 | |
35 public class ConcurrentClassLoadingTest { | |
36 int numThreads = 0; | |
37 long seed = 0; | |
38 CyclicBarrier l; | |
39 Random rand; | |
40 | |
41 public static void main(String[] args) throws Throwable { | |
42 ConcurrentClassLoadingTest test = new ConcurrentClassLoadingTest(); | |
43 test.parseArgs(args); | |
44 test.run(); | |
45 } | |
46 | |
47 void parseArgs(String[] args) { | |
48 int i = 0; | |
49 while (i < args.length) { | |
50 String flag = args[i]; | |
51 switch(flag) { | |
52 case "-seed": | |
53 seed = Long.parseLong(args[++i]); | |
54 break; | |
55 case "-numThreads": | |
56 numThreads = Integer.parseInt(args[++i]); | |
57 break; | |
58 default: | |
59 throw new Error("Unknown flag: " + flag); | |
60 } | |
61 ++i; | |
62 } | |
63 } | |
64 | |
65 void init() { | |
66 if (numThreads == 0) { | |
67 numThreads = Runtime.getRuntime().availableProcessors(); | |
68 } | |
69 | |
70 if (seed == 0) { | |
71 seed = (new Random()).nextLong(); | |
72 } | |
73 rand = new Random(seed); | |
74 | |
75 l = new CyclicBarrier(numThreads + 1); | |
76 | |
77 System.out.printf("Threads: %d\n", numThreads); | |
78 System.out.printf("Seed: %d\n", seed); | |
79 } | |
80 | |
81 final List<Loader> loaders = new ArrayList<>(); | |
82 | |
83 void prepare() { | |
84 List<String> c = new ArrayList<>(Arrays.asList(classNames)); | |
85 | |
86 // Split classes between loading threads | |
87 int count = (classNames.length / numThreads) + 1; | |
88 for (int t = 0; t < numThreads; t++) { | |
89 List<String> sel = new ArrayList<>(); | |
90 | |
91 System.out.printf("Thread #%d:\n", t); | |
92 for (int i = 0; i < count; i++) { | |
93 if (c.size() == 0) break; | |
94 | |
95 int k = rand.nextInt(c.size()); | |
96 String elem = c.remove(k); | |
97 sel.add(elem); | |
98 System.out.printf("\t%s\n", elem); | |
99 } | |
100 loaders.add(new Loader(sel)); | |
101 } | |
102 | |
103 // Print diagnostic info when the test hangs | |
104 Runtime.getRuntime().addShutdownHook(new Thread() { | |
105 public void run() { | |
106 boolean alive = false; | |
107 for (Loader l : loaders) { | |
108 if (!l.isAlive()) continue; | |
109 | |
110 if (!alive) { | |
111 System.out.println("Some threads are still alive:"); | |
112 alive = true; | |
113 } | |
114 | |
115 System.out.println(l.getName()); | |
116 for (StackTraceElement elem : l.getStackTrace()) { | |
117 System.out.println("\t"+elem.toString()); | |
118 } | |
119 } | |
120 } | |
121 }); | |
122 } | |
123 | |
124 public void run() throws Throwable { | |
125 init(); | |
126 prepare(); | |
127 | |
128 for (Loader loader : loaders) { | |
129 loader.start(); | |
130 } | |
131 | |
132 l.await(); | |
133 | |
134 for (Loader loader : loaders) { | |
135 loader.join(); | |
136 } | |
137 } | |
138 | |
139 class Loader extends Thread { | |
140 List<String> classes; | |
141 | |
142 public Loader(List<String> classes) { | |
143 this.classes = classes; | |
144 setDaemon(true); | |
145 } | |
146 | |
147 @Override | |
148 public void run() { | |
149 try { | |
150 l.await(); | |
151 | |
152 for (String name : classes) { | |
153 Class.forName(name).getName(); | |
154 } | |
155 } catch (ClassNotFoundException | BrokenBarrierException | InterruptedException e) { | |
156 throw new Error(e); | |
157 } | |
158 } | |
159 } | |
160 | |
161 final static String[] classNames = { | |
162 "java.lang.invoke.AbstractValidatingLambdaMetafactory", | |
163 "java.lang.invoke.BoundMethodHandle", | |
164 "java.lang.invoke.CallSite", | |
165 "java.lang.invoke.ConstantCallSite", | |
166 "java.lang.invoke.DirectMethodHandle", | |
167 "java.lang.invoke.InnerClassLambdaMetafactory", | |
168 "java.lang.invoke.InvokeDynamic", | |
169 "java.lang.invoke.InvokeGeneric", | |
170 "java.lang.invoke.InvokerBytecodeGenerator", | |
171 "java.lang.invoke.Invokers", | |
172 "java.lang.invoke.LambdaConversionException", | |
173 "java.lang.invoke.LambdaForm", | |
174 "java.lang.invoke.LambdaMetafactory", | |
175 "java.lang.invoke.MagicLambdaImpl", | |
176 "java.lang.invoke.MemberName", | |
177 "java.lang.invoke.MethodHandle", | |
178 "java.lang.invoke.MethodHandleImpl", | |
179 "java.lang.invoke.MethodHandleInfo", | |
180 "java.lang.invoke.MethodHandleNatives", | |
181 "java.lang.invoke.MethodHandleProxies", | |
182 "java.lang.invoke.MethodHandles", | |
183 "java.lang.invoke.MethodHandleStatics", | |
184 "java.lang.invoke.MethodType", | |
185 "java.lang.invoke.MethodTypeForm", | |
186 "java.lang.invoke.MutableCallSite", | |
187 "java.lang.invoke.SerializedLambda", | |
188 "java.lang.invoke.SimpleMethodHandle", | |
189 "java.lang.invoke.SwitchPoint", | |
190 "java.lang.invoke.TypeConvertingMethodAdapter", | |
191 "java.lang.invoke.VolatileCallSite", | |
192 "java.lang.invoke.WrongMethodTypeException" | |
193 }; | |
194 } |