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 
  24 /*
  25  * @test
  26  * @key stress gc
  27  *
  28  * @summary converted from VM Testbase gc/gctests/FinalizeTest04.
  29  * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent]
  30  *
  31  * @library /vmTestbase
  32  *          /test/lib
  33  * @run driver jdk.test.lib.FileInstaller . .
  34  * @run main/othervm -XX:-UseGCOverheadLimit gc.gctests.FinalizeTest04.FinalizeTest04
  35  */
  36 
  37 package gc.gctests.FinalizeTest04;
  38 
  39 import nsk.share.test.*;
  40 import nsk.share.gc.*;
  41 
  42 /**
  43  * Test that synchronization between GC and finalizer thread
  44  * (if any) is correct.
  45  *
  46  * This test creates objects that do GC-related work in finalizer,
  47  * e.g. call System.gc(), System.runFinalization(), Algorithms.eatMemory().
  48  *
  49  * @see nsk.share.gc.Algorithms#eatMemory()
  50  * @see java.lang.System#gc()
  51  * @see java.lang.System#runFinalization()
  52  */
  53 public class FinalizeTest04 extends GCTestBase {
  54 
  55     private int objectSize = 100;
  56     private int objectCount = 100;
  57     private ExecutionController stresser;
  58 
  59     private class FinMemoryObject2 extends FinMemoryObject {
  60 
  61         public FinMemoryObject2(int size) {
  62             super(size);
  63         }
  64 
  65         protected void finalize() {
  66             super.finalize();
  67             System.gc();
  68             Algorithms.eatMemory(stresser);
  69             System.runFinalization();
  70             System.gc();
  71             Algorithms.eatMemory(stresser);
  72             System.gc();
  73         }
  74     }
  75 
  76     public void run() {
  77         stresser = new Stresser(runParams.getStressOptions());
  78         stresser.start(runParams.getIterations());
  79         for (int i = 0; i < objectCount; ++i) {
  80             new FinMemoryObject2(objectSize);
  81         }
  82         Algorithms.eatMemory(stresser);
  83     }
  84 
  85     public static void main(String[] args) {
  86         GC.runTest(new FinalizeTest04(), args);
  87     }
  88 }