1 /*
   2  * Copyright (c) 2007, 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 package vm.oom.production;
  24 
  25 import java.util.*;
  26 import nsk.share.gc.*;
  27 import nsk.share.gc.gp.*;
  28 import nsk.share.TestFailure;
  29 import vm.oom.OOMTraceTest;
  30 
  31 public class OOMProductionAnonymousTraceTest extends OOMTraceTest implements GarbageProducerAware {
  32   private GarbageProducer garbageProducer;
  33   private long objectSize;
  34 
  35   private class InnerClassB {
  36     public void createB() {
  37       List storage = new ArrayList();
  38 
  39       while (continueExecution()) {
  40         // the OOM can be thrown at either of the 2 points
  41         // 1. storage.add()
  42         // 2. garbageProducer.create()
  43         // with #2 far more likely, but #1 still possible
  44         storage.add(garbageProducer.create(objectSize));
  45       }
  46 
  47       dontExpectOOM();
  48     }
  49   }
  50 
  51   private class InnerClassA {
  52     public InnerClassA() {
  53       new InnerClassB().createB();
  54     }
  55   }
  56 
  57   protected OutOfMemoryError createOOM() {
  58     try {
  59       objectSize = Runtime.getRuntime().maxMemory() / 50;
  60       new InnerClassA();
  61       if (isAlwaysOOM()) {
  62         throw new TestFailure("Expected OutOfMemoryError was not thrown");
  63       }
  64     } catch (OutOfMemoryError e) {
  65       return e;
  66     }
  67     return null;
  68   }
  69 
  70   protected void initExpectedTrace() {
  71     super.initExpectedTrace();
  72     addExpectedTraceElement(InnerClassA.class.getName(), "<init>", false);
  73     addExpectedTraceElement(InnerClassB.class.getName(), "createB", false);
  74   }
  75 
  76   public final void setGarbageProducer(GarbageProducer garbageProducer) {
  77     this.garbageProducer = garbageProducer;
  78   }
  79 
  80   public static void main(String[] args) {
  81     GC.runTest(new OOMProductionAnonymousTraceTest(), args);
  82   }
  83 }