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 id=passive
27 * @summary Acceptance tests: collector can withstand allocation
28 * @key randomness
29 * @requires vm.gc.Shenandoah
30 * @library /test/lib
31 *
32 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
33 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
34 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
35 * TestHeapUncommit
36 *
37 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
38 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
39 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
40 * TestHeapUncommit
41 *
42 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
43 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
44 * -XX:+ShenandoahDegeneratedGC
45 * TestHeapUncommit
46 *
47 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
48 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
49 * -XX:-ShenandoahDegeneratedGC
50 * TestHeapUncommit
51 */
52
53 /*
54 * @test id=adaptive
55 * @summary Acceptance tests: collector can withstand allocation
56 * @key randomness
57 * @requires vm.gc.Shenandoah
58 * @library /test/lib
59 *
60 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
61 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
62 * -XX:+ShenandoahVerify
63 * TestHeapUncommit
64 *
65 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
66 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
67 * TestHeapUncommit
68 *
69 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
70 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
71 * TestHeapUncommit
72 *
73 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
74 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
75 * TestHeapUncommit
76 *
77 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
78 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
79 * TestHeapUncommit
80 *
81 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
82 * -XX:+UseShenandoahGC
83 * -XX:-UseTLAB -XX:+ShenandoahVerify
84 * TestHeapUncommit
85 */
86
87 /*
88 * @test id=default-lp
89 * @key randomness
90 * @requires vm.gc.Shenandoah
91 * @requires vm.bits == "64"
92 * @library /test/lib
93 *
94 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
95 * -XX:+UseShenandoahGC
96 * -XX:+ShenandoahVerify
97 * TestHeapUncommit
98 *
99 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
100 * -XX:+UseShenandoahGC
101 * TestHeapUncommit
102 *
103 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
104 * -XX:+UseShenandoahGC
105 * -XX:-UseTLAB -XX:+ShenandoahVerify
106 * TestHeapUncommit
107 */
108
109 import java.util.Random;
110 import jdk.test.lib.Utils;
111
112 public class TestHeapUncommit {
113
114 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
115
116 static volatile Object sink;
117
118 public static void main(String[] args) throws Exception {
119 final int min = 0;
120 final int max = 384 * 1024;
121 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
122
123 Random r = Utils.getRandomInstance();
124 for (long c = 0; c < count; c++) {
125 sink = new int[min + r.nextInt(max - min)];
126 }
127 }
128
129 }