1 /*
   2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 /**
  25  * @test TestAllocLargerThanHeap
  26  * @summary Test that allocation of the object larger than heap fails predictably
  27  * @key gc
  28  * @library /testlibrary
  29  *
  30  * @run main TestAllocLargerThanHeap
  31  */
  32 
  33 import com.oracle.java.testlibrary.*;
  34 
  35 public class TestAllocLargerThanHeap {
  36 
  37     static final int SIZE = 16 * 1024 * 1024;
  38 
  39     static volatile Object sink;
  40 
  41     public static void work() throws Exception {
  42         sink = new Object[SIZE];
  43     }
  44 
  45     public static void main(String[] args) throws Exception {
  46         if (args.length > 0) {
  47             work();
  48             return;
  49         }
  50 
  51         {
  52             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  53                     "-Xmx16m",
  54                     "-XX:+UnlockExperimentalVMOptions",
  55                     "-XX:+UseShenandoahGC",
  56                     TestAllocLargerThanHeap.class.getName(),
  57                     "test");
  58 
  59             OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
  60             analyzer.shouldHaveExitValue(1);
  61             analyzer.shouldContain("java.lang.OutOfMemoryError: Java heap space");
  62         }
  63 
  64         {
  65             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  66                     "-Xmx1g",
  67                     "-XX:+UnlockExperimentalVMOptions",
  68                     "-XX:+UseShenandoahGC",
  69                     TestAllocLargerThanHeap.class.getName(),
  70                     "test");
  71 
  72             OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
  73             analyzer.shouldHaveExitValue(0);
  74             analyzer.shouldNotContain("java.lang.OutOfMemoryError: Java heap space");
  75         }
  76     }
  77 }