1 /*
  2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
  3  * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
  4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  5  *
  6  * This code is free software; you can redistribute it and/or modify it
  7  * under the terms of the GNU General Public License version 2 only, as
  8  * published by the Free Software Foundation.
  9  *
 10  * This code is distributed in the hope that it will be useful, but WITHOUT
 11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 13  * version 2 for more details (a copy is included in the LICENSE file that
 14  * accompanied this code).
 15  *
 16  * You should have received a copy of the GNU General Public License version
 17  * 2 along with this work; if not, write to the Free Software Foundation,
 18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 19  *
 20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 21  * or visit www.oracle.com if you need additional information or have any
 22  * questions.
 23  *
 24  */
 25 
 26 /**
 27  * @test
 28  * @summary Test OOME in separate thread is recoverable
 29  * @requires vm.gc.Shenandoah
 30  * @library /test/lib
 31  * @run driver TestThreadFailure
 32  */
 33 
 34 import java.util.*;
 35 
 36 import jdk.test.lib.process.OutputAnalyzer;
 37 import jdk.test.lib.process.ProcessTools;
 38 
 39 public class TestThreadFailure {
 40 
 41     static final int SIZE = 1024;
 42     static final int COUNT = 16;
 43 
 44     static class NastyThread extends Thread {
 45         @Override
 46         public void run() {
 47             List<Object> root = new ArrayList<Object>();
 48             while (true) {
 49                 root.add(new Object[SIZE]);
 50             }
 51         }
 52     }
 53 
 54     public static void main(String[] args) throws Exception {
 55         if (args.length > 0) {
 56             for (int t = 0; t < COUNT; t++) {
 57                 // If we experience OutOfMemoryError during our attempt to instantiate NastyThread, we'll abort
 58                 // main and will not print "All good".  We'll also report a non-zero termination code.  In the
 59                 // case that the previously instantiated NastyThread accumulated more than SheanndoahNoProgressThreshold
 60                 // unproductive GC cycles before failing, the main thread may not try a Full GC before it experiences
 61                 // OutOfMemoryError exception.
 62                 Thread thread = new NastyThread();
 63                 thread.start();
 64                 thread.join();
 65                 // Having joined thread, we know the memory consumed by thread is now garbage, and will eventually be
 66                 // collected.  Some or all of that memory may have been promoted, so we may need to perform a Full GC
 67                 // in order to reclaim it quickly.
 68             }
 69             System.out.println("All good");
 70             return;
 71         }
 72 
 73         {
 74             OutputAnalyzer analyzer = ProcessTools.executeLimitedTestJava(
 75                     "-Xmx32m",
 76                     "-XX:+UnlockExperimentalVMOptions",
 77                     "-XX:+UseShenandoahGC",
 78                     TestThreadFailure.class.getName(),
 79                     "test");
 80 
 81             analyzer.shouldHaveExitValue(0);
 82             analyzer.shouldContain("java.lang.OutOfMemoryError");
 83             analyzer.shouldContain("All good");
 84         }
 85 
 86         {
 87             ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
 88                     "-Xmx32m",
 89                     "-XX:+UnlockExperimentalVMOptions",
 90                     "-XX:+UseShenandoahGC", "-XX:ShenandoahGCMode=generational",
 91                     TestThreadFailure.class.getName(),
 92                     "test");
 93 
 94             OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
 95             analyzer.shouldHaveExitValue(0);
 96             analyzer.shouldContain("java.lang.OutOfMemoryError");
 97             analyzer.shouldContain("All good");
 98         }
 99     }
100 }