1 /*
   2  * Copyright (c) 2016, 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 TestAllocIntArrays
  26  * @summary Acceptance tests: collector can withstand allocation
  27  * @key gc
  28  *
  29  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=passive    -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify TestAllocIntArrays
  30  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=passive    -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify TestAllocIntArrays
  31  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=passive    -XX:+ShenandoahDegeneratedGC                       TestAllocIntArrays
  32  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=passive    -XX:-ShenandoahDegeneratedGC                       TestAllocIntArrays
  33  *
  34  * @run main/othervm/timeout=240 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=aggressive -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify TestAllocIntArrays
  35  * @run main/othervm/timeout=240 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=aggressive -XX:+ShenandoahAllocFailureALot  -XX:+ShenandoahVerify TestAllocIntArrays
  36  * @run main/othervm/timeout=240 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=aggressive -XX:+ShenandoahOOMDuringEvacALot                       TestAllocIntArrays
  37  * @run main/othervm/timeout=240 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=aggressive -XX:+ShenandoahAllocFailureALot                        TestAllocIntArrays
  38  * @run main/othervm             -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=aggressive                                                        TestAllocIntArrays
  39  *
  40  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=adaptive   -XX:+ShenandoahVerify TestAllocIntArrays
  41  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=static     -XX:+ShenandoahVerify TestAllocIntArrays
  42  *
  43  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=adaptive   TestAllocIntArrays
  44  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=static     TestAllocIntArrays
  45  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:ShenandoahGCHeuristics=compact    TestAllocIntArrays
  46  *
  47  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g -XX:-UseTLAB                          -XX:+ShenandoahVerify TestAllocIntArrays
  48  */
  49 
  50 import java.util.Random;
  51 
  52 public class TestAllocIntArrays {
  53 
  54     static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
  55 
  56     static volatile Object sink;
  57 
  58     public static void main(String[] args) throws Exception {
  59         final int min = 0;
  60         final int max = 384 * 1024;
  61         long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
  62 
  63         Random r = new Random();
  64         for (long c = 0; c < count; c++) {
  65             sink = new int[min + r.nextInt(max - min)];
  66         }
  67     }
  68 
  69 }