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 deal with retained objects
29 * @requires vm.gc.Shenandoah
30 *
31 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
32 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
33 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
34 * TestRetainObjects
35 *
36 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
37 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
38 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
39 * TestRetainObjects
40 *
41 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
42 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
43 * -XX:+ShenandoahDegeneratedGC
44 * TestRetainObjects
45 *
46 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
47 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
48 * -XX:-ShenandoahDegeneratedGC
49 * TestRetainObjects
50 */
51
52 /*
53 * @test id=aggressive
54 * @summary Acceptance tests: collector can deal with retained objects
55 * @requires vm.gc.Shenandoah
56 *
57 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
58 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
59 * -XX:+ShenandoahOOMDuringEvacALot
60 * TestRetainObjects
61 *
62 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
63 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
64 * -XX:+ShenandoahAllocFailureALot
65 * TestRetainObjects
66 *
67 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
68 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
69 * TestRetainObjects
70 */
71
72 /*
73 * @test id=adaptive
74 * @summary Acceptance tests: collector can deal with retained objects
75 * @requires vm.gc.Shenandoah
76 *
77 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
78 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
79 * -XX:+ShenandoahVerify
80 * TestRetainObjects
81 *
82 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
83 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
84 * TestRetainObjects
85 */
86
87 /*
88 * @test id=generational
89 * @summary Acceptance tests: collector can deal with retained objects
90 * @requires vm.gc.Shenandoah
91 *
92 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
93 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
94 * -XX:+ShenandoahVerify
95 * TestRetainObjects
96 *
97 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
98 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
99 * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify
100 * TestRetainObjects
101 *
102 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
103 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
104 * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify
105 * TestRetainObjects
106 *
107 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
108 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
109 * TestRetainObjects
110 */
111
112 /*
113 * @test id=static
114 * @summary Acceptance tests: collector can deal with retained objects
115 * @requires vm.gc.Shenandoah
116 *
117 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
118 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
119 * TestRetainObjects
120 */
121
122 /*
123 * @test id=compact
124 * @summary Acceptance tests: collector can deal with retained objects
125 * @requires vm.gc.Shenandoah
126 *
127 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
128 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
129 * TestRetainObjects
130 */
131
132 /*
133 * @test id=no-tlab
134 * @summary Acceptance tests: collector can deal with retained objects
135 * @requires vm.gc.Shenandoah
136 *
137 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
138 * -XX:+UseShenandoahGC
139 * -XX:-UseTLAB -XX:+ShenandoahVerify
140 * TestRetainObjects
141 */
142
143 public class TestRetainObjects {
144
145 static final int COUNT = 10_000_000;
146 static final int WINDOW = 10_000;
147
148 static final String[] reachable = new String[WINDOW];
149
150 public static void main(String[] args) throws Exception {
151 int rIdx = 0;
152 for (int c = 0; c < COUNT; c++) {
153 reachable[rIdx] = ("LargeString" + c);
154 rIdx++;
155 if (rIdx >= WINDOW) {
156 rIdx = 0;
157 }
158 }
159 }
160
161 }