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 *
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
120 *
121 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
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 *
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
103 /*
104 * @test id=generational
105 * @summary Acceptance tests: collector can withstand allocation
106 * @key randomness
107 * @requires vm.gc.Shenandoah
108 * @library /test/lib
109 *
110 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
111 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
112 * -XX:+ShenandoahVerify
113 * TestAllocIntArrays
114 *
115 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
116 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
117 * TestAllocIntArrays
118 */
119
120 /*
121 * @test id=static
122 * @summary Acceptance tests: collector can withstand allocation
123 * @key randomness
124 * @requires vm.gc.Shenandoah
125 * @library /test/lib
126 *
127 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
128 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
129 * TestAllocIntArrays
130 */
131
132 /*
133 * @test id=compact
134 * @summary Acceptance tests: collector can withstand allocation
135 * @key randomness
136 * @requires vm.gc.Shenandoah
137 * @library /test/lib
138 *
139 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
198 * -XX:+ShenandoahVerify
199 * TestAllocIntArrays
200 *
201 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
202 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
203 * TestAllocIntArrays
204 */
205
206 import java.util.Random;
207 import jdk.test.lib.Utils;
208
209 public class TestAllocIntArrays {
210
211 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
212
213 static volatile Object sink;
214
215 public static void main(String[] args) throws Exception {
216 final int min = 0;
217 final int max = 384 * 1024;
218 // Each allocated int array is assumed to consume 16 bytes for alignment and header, plus
219 // an average of 4 * the average number of elements in the array.
220 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
221
222 Random r = Utils.getRandomInstance();
223 // Repeatedly, allocate an array of int having between 0 and 384K elements, until we have
224 // allocated approximately TARGET_MB. The largest allocated array consumes 384K*4 + 16, which is 1.5 M,
225 // which is well below the heap size of 1g.
226 for (long c = 0; c < count; c++) {
227 sink = new int[min + r.nextInt(max - min)];
228 }
229 }
230
231 }
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