1 /*
   2  * Copyright (c) 2010, 2018, 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
  27  * @modules java.base/jdk.internal.misc
  28  *
  29  * @summary converted from VM Testbase vm/mlvm/anonloader/stress/parallelLoad.
  30  * VM Testbase keywords: [feature_mlvm, nonconcurrent]
  31  *
  32  * @library /vmTestbase
  33  *          /test/lib
  34  * @run driver jdk.test.lib.FileInstaller . .
  35  *
  36  * @comment build test class and indify classes
  37  * @build vm.mlvm.anonloader.stress.parallelLoad.Test
  38  * @run driver vm.mlvm.share.IndifiedClassesBuilder
  39  *
  40  * @run main/othervm
  41  *      -XX:+BytecodeVerificationLocal
  42  *      vm.mlvm.anonloader.stress.parallelLoad.Test
  43  *      -threadsPerCpu 4
  44  *      -threadsExtra 20
  45  *      -parseTimeout 0
  46  *      -unsafeLoad true
  47  */
  48 
  49 package vm.mlvm.anonloader.stress.parallelLoad;
  50 
  51 import vm.mlvm.anonloader.share.StressClassLoadingTest;
  52 import vm.mlvm.anonloader.share.AnonkTestee01;
  53 import vm.mlvm.share.MlvmTestExecutor;
  54 import vm.mlvm.share.MultiThreadedTest;
  55 import vm.share.FileUtils;
  56 
  57 /**
  58  * Verifies that loading classes in parallel from several threads using
  59  * {@link sun.misc.Unsafe#defineAnonymousClass}
  60  * does not produce exceptions and crashes.
  61  *
  62  */
  63 public class Test extends MultiThreadedTest {
  64     private static final Class<?> HOST_CLASS = AnonkTestee01.class;
  65     private static final String NAME_PREFIX = "thread%03d";
  66 
  67     private final byte[] classBytes;
  68 
  69     private static class SubTest extends StressClassLoadingTest {
  70         private final byte[] classBytes;
  71 
  72         public SubTest(byte[] classBytes) {
  73             this.classBytes = classBytes;
  74         }
  75 
  76         @Override
  77         protected Class<?> getHostClass() {
  78             return HOST_CLASS;
  79         }
  80 
  81         @Override
  82         protected byte[] generateClassBytes() {
  83             return classBytes;
  84         }
  85     }
  86 
  87     public Test() throws Exception {
  88         classBytes = FileUtils.readClass(HOST_CLASS.getName());
  89     }
  90 
  91     /**
  92      * Constructs a sub-test class and runs it. The sub-test class loads
  93      * {@link vm.mlvm.anonloader.share.AnonkTestee01} class bytecodes
  94      * using {@link sun.misc.Unsafe#defineAnonymousClass}
  95      * @param numThread Number of the thread
  96      * @throws Exception if there any exceptions thrown in the sub-test
  97      */
  98     @Override
  99     protected boolean runThread(int numThread) throws Exception {
 100         SubTest subTest = new SubTest(classBytes);
 101         subTest.setFileNamePrefix(String.format(NAME_PREFIX, numThread));
 102         return subTest.run();
 103     }
 104 
 105     /**
 106      * Runs the test.
 107      * @param args Test arguments.
 108      */
 109     public static void main(String[] args) {
 110         MlvmTestExecutor.launch(args);
 111     }
 112 }