1 /*
2 * Copyright (c) 2016, 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 *
80 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
81 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
82 * TestAllocIntArrays
83 */
84
85 /*
86 * @test id=adaptive
87 * @summary Acceptance tests: collector can withstand allocation
88 * @key randomness
89 * @requires vm.gc.Shenandoah
90 * @library /test/lib
91 *
92 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
93 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
94 * -XX:+ShenandoahVerify
95 * TestAllocIntArrays
96 *
97 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
98 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
99 * TestAllocIntArrays
100 */
101
102 /*
103 * @test id=static
104 * @summary Acceptance tests: collector can withstand allocation
105 * @key randomness
106 * @requires vm.gc.Shenandoah
107 * @library /test/lib
108 *
109 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
110 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
111 * TestAllocIntArrays
112 */
113
114 /*
115 * @test id=compact
116 * @summary Acceptance tests: collector can withstand allocation
117 * @key randomness
118 * @requires vm.gc.Shenandoah
119 * @library /test/lib
180 * -XX:+ShenandoahVerify
181 * TestAllocIntArrays
182 *
183 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
184 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
185 * TestAllocIntArrays
186 */
187
188 import java.util.Random;
189 import jdk.test.lib.Utils;
190
191 public class TestAllocIntArrays {
192
193 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
194
195 static volatile Object sink;
196
197 public static void main(String[] args) throws Exception {
198 final int min = 0;
199 final int max = 384 * 1024;
200 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
201
202 Random r = Utils.getRandomInstance();
203 for (long c = 0; c < count; c++) {
204 sink = new int[min + r.nextInt(max - min)];
205 }
206 }
207
208 }
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1 /*
2 * Copyright (c) 2016, 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 *
81 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
82 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
83 * TestAllocIntArrays
84 */
85
86 /*
87 * @test id=adaptive
88 * @summary Acceptance tests: collector can withstand allocation
89 * @key randomness
90 * @requires vm.gc.Shenandoah
91 * @library /test/lib
92 *
93 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
94 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
95 * -XX:+ShenandoahVerify
96 * TestAllocIntArrays
97 *
98 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
99 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
100 * TestAllocIntArrays
101 *
102 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
103 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
104 * -XX:+ShenandoahVerify
105 * TestAllocIntArrays
106 *
107 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
108 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
109 * TestAllocIntArrays
110 */
111
112 /*
113 * @test id=static
114 * @summary Acceptance tests: collector can withstand allocation
115 * @key randomness
116 * @requires vm.gc.Shenandoah
117 * @library /test/lib
118 *
119 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
120 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
121 * TestAllocIntArrays
122 */
123
124 /*
125 * @test id=compact
126 * @summary Acceptance tests: collector can withstand allocation
127 * @key randomness
128 * @requires vm.gc.Shenandoah
129 * @library /test/lib
190 * -XX:+ShenandoahVerify
191 * TestAllocIntArrays
192 *
193 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
194 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
195 * TestAllocIntArrays
196 */
197
198 import java.util.Random;
199 import jdk.test.lib.Utils;
200
201 public class TestAllocIntArrays {
202
203 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
204
205 static volatile Object sink;
206
207 public static void main(String[] args) throws Exception {
208 final int min = 0;
209 final int max = 384 * 1024;
210 // Each allocated int array is assumed to consume 16 bytes for alignment and header, plus
211 // an average of 4 * the average number of elements in the array.
212 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
213
214 Random r = Utils.getRandomInstance();
215 // Repeatedly, allocate an array of int having between 0 and 384K elements, until we have
216 // allocated approximately TARGET_MB. The largest allocated array consumes 384K*4 + 16, which is 1.5 M,
217 // which is well below the heap size of 1g.
218 for (long c = 0; c < count; c++) {
219 sink = new int[min + r.nextInt(max - min)];
220 }
221 }
222
223 }
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