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  * @key gc
  28  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  29  *
  30  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  31  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
  32  *      -XX:+ShenandoahDegeneratedGC
  33  *      -Dtarget=10000
  34  *      TestLotsOfCycles
  35  *
  36  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  37  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
  38  *      -XX:-ShenandoahDegeneratedGC
  39  *      -Dtarget=10000
  40  *      TestLotsOfCycles
  41  */
  42 
  43 /*
  44  * @test TestLotsOfCycles
  45  * @key gc
  46  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  47  *
  48  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  49  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
  50  *      -XX:+ShenandoahOOMDuringEvacALot
  51  *      -Dtarget=1000
  52  *      TestLotsOfCycles
  53  *
  54  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  55  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
  56  *      -XX:+ShenandoahAllocFailureALot
  57  *      -Dtarget=1000
  58  *      TestLotsOfCycles
  59  *
  60  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  61  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
  62  *      -Dtarget=1000
  63  *      TestLotsOfCycles
  64  *
  65  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  66  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
  67  *      -Dtarget=10000
  68  *      TestLotsOfCycles
  69  *
  70  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  71  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
  72  *      -Dtarget=10000
  73  *      TestLotsOfCycles
  74  *
  75  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  76  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
  77  *      -Dtarget=1000
  78  *     TestLotsOfCycles
  79  */
  80 
  81 /*
  82  * @test TestLotsOfCycles
  83  * @key gc
  84  * @requires vm.gc.Shenandoah & !vm.graal.enabled
  85  *
  86  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  87  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
  88  *      -XX:+ShenandoahOOMDuringEvacALot
  89  *      -Dtarget=1000
  90  *      TestLotsOfCycles
  91  *
  92  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  93  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
  94  *      -XX:+ShenandoahAllocFailureALot
  95  *      -Dtarget=1000
  96  *      TestLotsOfCycles
  97  *
  98  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
  99  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
 100  *      -Dtarget=1000
 101  *      TestLotsOfCycles
 102  *
 103  * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 104  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
 105  *      -Dtarget=10000
 106  *      TestLotsOfCycles
 107  */
 108 
 109 public class TestLotsOfCycles {
 110 
 111     static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle
 112     static final long STRIDE = 100_000;
 113 
 114     static volatile Object sink;
 115 
 116     public static void main(String[] args) throws Exception {
 117         long count = TARGET_MB * 1024 * 1024 / 16;
 118         for (long c = 0; c < count; c += STRIDE) {
 119             for (long s = 0; s < STRIDE; s++) {
 120                 sink = new Object();
 121             }
 122             Thread.sleep(1);
 123         }
 124     }
 125 
 126 }