1 /*
  2  * Copyright (c) 2017, 2020, 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 id=passive
 28  * @summary Test Shenandoah GC uses concurrent/parallel threads correctly
 29  * @requires vm.gc.Shenandoah
 30  *
 31  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 32  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
 33  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
 34  *      -Dtarget=1000
 35  *      TestGCThreadGroups
 36  */
 37 
 38 /**
 39  * @test id=default
 40  * @summary Test Shenandoah GC uses concurrent/parallel threads correctly
 41  * @requires vm.gc.Shenandoah
 42  *
 43  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 44  *      -XX:+UseShenandoahGC
 45  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
 46  *      -Dtarget=1000
 47  *      TestGCThreadGroups
 48  *
 49  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 50  *      -XX:+UseShenandoahGC
 51  *      -XX:-UseDynamicNumberOfGCThreads
 52  *      -Dtarget=1000
 53  *      TestGCThreadGroups
 54  *
 55  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 56  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
 57  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
 58  *      -Dtarget=1000
 59  *      TestGCThreadGroups
 60  *
 61  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 62  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
 63  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
 64  *      -Dtarget=1000
 65  *      TestGCThreadGroups
 66  *
 67  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 68  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
 69  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
 70  *      -Dtarget=100
 71  *      TestGCThreadGroups
 72  *
 73  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 74  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
 75  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
 76  *      -Dtarget=100
 77  *      TestGCThreadGroups
 78  */
 79 
 80 /**
 81  * @test id=generational
 82  * @summary Test Shenandoah GC uses concurrent/parallel threads correctly
 83  * @requires vm.gc.Shenandoah
 84  *
 85  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 86  *      -XX:+UseShenandoahGC
 87  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
 88  *      -Dtarget=1000 -XX:ShenandoahGCMode=generational
 89  *      TestGCThreadGroups
 90  *
 91  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 92  *      -XX:+UseShenandoahGC
 93  *      -XX:-UseDynamicNumberOfGCThreads
 94  *      -Dtarget=1000 -XX:ShenandoahGCMode=generational
 95  *      TestGCThreadGroups
 96  */
 97 
 98 /**
 99  * @test id=iu
100  * @summary Test Shenandoah GC uses concurrent/parallel threads correctly
101  * @requires vm.gc.Shenandoah
102  *
103  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
104  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
105  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
106  *      -Dtarget=1000
107  *      TestGCThreadGroups
108  *
109  * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
110  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
111  *      -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
112  *      -Dtarget=1000
113  *      TestGCThreadGroups
114 */
115 
116 public class TestGCThreadGroups {
117 
118     static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle
119     static final long STRIDE = 100_000;
120 
121     static volatile Object sink;
122 
123     public static void main(String[] args) throws Exception {
124         long count = TARGET_MB * 1024 * 1024 / 16;
125         for (long c = 0; c < count; c += STRIDE) {
126             for (long s = 0; s < STRIDE; s++) {
127                 sink = new Object();
128             }
129             Thread.sleep(1);
130         }
131     }
132 
133 }