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 
  25 /*
  26  * @test TestLotsOfCycles
  27  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  28  *
  29  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  30  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
  31  *      -XX:+ShenandoahDegeneratedGC
  32  *      -Dtarget=10000
  33  *      TestLotsOfCycles
  34  *
  35  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  36  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
  37  *      -XX:-ShenandoahDegeneratedGC
  38  *      -Dtarget=10000
  39  *      TestLotsOfCycles
  40  */
  41 
  42 /*
  43  * @test TestLotsOfCycles
  44  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  45  *
  46  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  47  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
  48  *      -XX:+ShenandoahOOMDuringEvacALot
  49  *      -Dtarget=1000
  50  *      TestLotsOfCycles
  51  *
  52  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  53  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
  54  *      -XX:+ShenandoahAllocFailureALot
  55  *      -Dtarget=1000
  56  *      TestLotsOfCycles
  57  *
  58  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  59  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
  60  *      -Dtarget=1000
  61  *      TestLotsOfCycles
  62  *
  63  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  64  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
  65  *      -Dtarget=10000
  66  *      TestLotsOfCycles
  67  *
  68  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  69  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
  70  *      -Dtarget=10000
  71  *      TestLotsOfCycles
  72  *
  73  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  74  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
  75  *      -Dtarget=1000
  76  *     TestLotsOfCycles
  77  */
  78 
  79 /*
  80  * @test TestLotsOfCycles
  81  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  82  *
  83  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  84  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
  85  *      -XX:+ShenandoahOOMDuringEvacALot
  86  *      -Dtarget=1000
  87  *      TestLotsOfCycles
  88  *
  89  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  90  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
  91  *      -XX:+ShenandoahAllocFailureALot
  92  *      -Dtarget=1000
  93  *      TestLotsOfCycles
  94  *
  95  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  96  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
  97  *      -Dtarget=1000
  98  *      TestLotsOfCycles
  99  *
 100  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 101  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
 102  *      -Dtarget=10000
 103  *      TestLotsOfCycles
 104  */
 105 
 106 public class TestLotsOfCycles {
 107 
 108     static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle
 109     static final long STRIDE = 100_000;
 110 
 111     static volatile Object sink;
 112 
 113     public static void main(String[] args) throws Exception {
 114         long count = TARGET_MB * 1024 * 1024 / 16;
 115         for (long c = 0; c < count; c += STRIDE) {
 116             for (long s = 0; s < STRIDE; s++) {
 117                 sink = new Object();
 118             }
 119             Thread.sleep(1);
 120         }
 121     }
 122 
 123 }