1 /*
  2  * Copyright (c) 2017, 2018, 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 Acceptance tests: collector can withstand allocation
 29  * @key randomness
 30  * @requires vm.gc.Shenandoah
 31  * @library /test/lib
 32  *
 33  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 34  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
 35  *      -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
 36  *      TestHeapUncommit
 37  *
 38  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 39  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
 40  *      -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
 41  *      TestHeapUncommit
 42  *
 43  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 44  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
 45  *      -XX:+ShenandoahDegeneratedGC
 46  *      TestHeapUncommit
 47  *
 48  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 49  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
 50  *      -XX:-ShenandoahDegeneratedGC
 51  *      TestHeapUncommit
 52  */
 53 
 54 /*
 55  * @test id=adaptive
 56  * @summary Acceptance tests: collector can withstand allocation
 57  * @key randomness
 58  * @requires vm.gc.Shenandoah
 59  * @library /test/lib
 60  *
 61  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 62  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
 63  *      -XX:+ShenandoahVerify
 64  *      TestHeapUncommit
 65  *
 66  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 67  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
 68  *      TestHeapUncommit
 69  *
 70  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 71  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
 72  *      TestHeapUncommit
 73  *
 74  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 75  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
 76  *      TestHeapUncommit
 77  *
 78  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 79  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
 80  *      TestHeapUncommit
 81  *
 82  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 83  *      -XX:+UseShenandoahGC
 84  *      -XX:-UseTLAB -XX:+ShenandoahVerify
 85  *      TestHeapUncommit
 86  */
 87 
 88 /*
 89  * @test id=generational
 90  * @summary Acceptance tests: collector can withstand allocation
 91  * @key randomness
 92  * @requires vm.gc.Shenandoah
 93  * @library /test/lib
 94  *
 95  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
 96  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
 97  *      -XX:+ShenandoahVerify
 98  *      TestHeapUncommit
 99  *
100  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
101  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
102  *      TestHeapUncommit
103  *
104  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
105  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
106  *      -XX:-UseTLAB -XX:+ShenandoahVerify
107  *      TestHeapUncommit
108  */
109 
110 /*
111  * @test id=iu
112  * @summary Acceptance tests: collector can withstand allocation
113  * @key randomness
114  * @requires vm.gc.Shenandoah
115  * @library /test/lib
116  *
117  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
118  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
119  *      -XX:+ShenandoahVerify
120  *      TestHeapUncommit
121  *
122  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
123  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
124  *      TestHeapUncommit
125  *
126  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
127  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
128  *      TestHeapUncommit
129  */
130 
131 /*
132  * @test id=default-lp
133  * @key randomness
134  * @requires vm.gc.Shenandoah
135  * @requires vm.bits == "64"
136  * @library /test/lib
137  *
138  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
139  *      -XX:+UseShenandoahGC
140  *      -XX:+ShenandoahVerify
141  *      TestHeapUncommit
142  *
143  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
144  *      -XX:+UseShenandoahGC
145  *      TestHeapUncommit
146  *
147  * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
148  *      -XX:+UseShenandoahGC
149  *      -XX:-UseTLAB -XX:+ShenandoahVerify
150  *      TestHeapUncommit
151  */
152 
153 import java.util.Random;
154 import jdk.test.lib.Utils;
155 
156 public class TestHeapUncommit {
157 
158     static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
159 
160     static volatile Object sink;
161 
162     public static void main(String[] args) throws Exception {
163         final int min = 0;
164         final int max = 384 * 1024;
165         long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
166 
167         Random r = Utils.getRandomInstance();
168         for (long c = 0; c < count; c++) {
169             sink = new int[min + r.nextInt(max - min)];
170         }
171     }
172 
173 }