1 /*
   2  * Copyright (c) 2017, 2018, Red Hat, Inc. 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 package gc.epsilon;
  25 
  26 /**
  27  * @test TestDieDefault
  28  * @requires vm.gc.Epsilon
  29  * @summary Epsilon GC should die on heap exhaustion
  30  * @library /test/lib
  31  * @run driver gc.epsilon.TestDieDefault
  32  */
  33 
  34 import jdk.test.lib.process.OutputAnalyzer;
  35 import jdk.test.lib.process.ProcessTools;
  36 
  37 public class TestDieDefault {
  38 
  39   public static void passWith(String... args) throws Exception {
  40     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);
  41     OutputAnalyzer out = new OutputAnalyzer(pb.start());
  42     out.shouldNotContain("OutOfMemoryError");
  43     out.shouldHaveExitValue(0);
  44   }
  45 
  46   public static void failWith(String... args) throws Exception {
  47     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);
  48     OutputAnalyzer out = new OutputAnalyzer(pb.start());
  49     out.shouldContain("OutOfMemoryError");
  50     if (out.getExitValue() == 0) {
  51       throw new IllegalStateException("Should have failed with non-zero exit code");
  52     }
  53   }
  54 
  55   public static void main(String[] args) throws Exception {
  56     passWith("-Xmx128m",
  57              "-XX:+UnlockExperimentalVMOptions",
  58              "-XX:+UseEpsilonGC",
  59              "-Dcount=1",
  60              TestDieDefault.Workload.class.getName());
  61 
  62     failWith("-Xmx128m",
  63              "-XX:+UnlockExperimentalVMOptions",
  64              "-XX:+UseEpsilonGC",
  65              TestDieDefault.Workload.class.getName());
  66 
  67     failWith("-Xmx128m",
  68              "-Xint",
  69              "-XX:+UnlockExperimentalVMOptions",
  70              "-XX:+UseEpsilonGC",
  71              TestDieDefault.Workload.class.getName());
  72 
  73     failWith("-Xmx128m",
  74              "-Xbatch",
  75              "-Xcomp",
  76              "-XX:+UnlockExperimentalVMOptions",
  77              "-XX:+UseEpsilonGC",
  78              TestDieDefault.Workload.class.getName());
  79 
  80     failWith("-Xmx128m",
  81              "-Xbatch",
  82              "-Xcomp",
  83              "-XX:TieredStopAtLevel=1",
  84              "-XX:+UnlockExperimentalVMOptions",
  85              "-XX:+UseEpsilonGC",
  86              TestDieDefault.Workload.class.getName());
  87 
  88     failWith("-Xmx128m",
  89              "-Xbatch",
  90              "-Xcomp",
  91              "-XX:-TieredCompilation",
  92              "-XX:+UnlockExperimentalVMOptions",
  93              "-XX:+UseEpsilonGC",
  94              TestDieDefault.Workload.class.getName());
  95   }
  96 
  97   public static class Workload {
  98     static int COUNT = Integer.getInteger("count", 1_000_000_000); // ~24 GB allocation
  99 
 100     static volatile Object sink;
 101 
 102     public static void main(String... args) {
 103       for (int c = 0; c < COUNT; c++) {
 104         sink = new Object();
 105       }
 106     }
 107   }
 108 
 109 }