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 deal with retained objects
28 * @requires vm.gc.Shenandoah
29 *
30 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
31 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
32 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
33 * TestRetainObjects
34 *
35 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
36 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
37 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
38 * TestRetainObjects
39 *
40 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
41 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
42 * -XX:+ShenandoahDegeneratedGC
43 * TestRetainObjects
44 *
45 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
46 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
47 * -XX:-ShenandoahDegeneratedGC
48 * TestRetainObjects
49 */
50
51 /*
52 * @test id=aggressive
53 * @summary Acceptance tests: collector can deal with retained objects
54 * @requires vm.gc.Shenandoah
55 *
56 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
57 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
58 * -XX:+ShenandoahOOMDuringEvacALot
59 * TestRetainObjects
60 *
61 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
62 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
63 * -XX:+ShenandoahAllocFailureALot
64 * TestRetainObjects
65 *
66 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
67 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
68 * TestRetainObjects
69 */
70
71 /*
72 * @test id=adaptive
73 * @summary Acceptance tests: collector can deal with retained objects
74 * @requires vm.gc.Shenandoah
75 *
76 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
77 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
78 * -XX:+ShenandoahVerify
79 * TestRetainObjects
80 *
81 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
82 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
83 * TestRetainObjects
84 */
85
86 /*
87 * @test id=static
88 * @summary Acceptance tests: collector can deal with retained objects
89 * @requires vm.gc.Shenandoah
90 *
91 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
92 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
93 * TestRetainObjects
94 */
95
96 /*
97 * @test id=compact
98 * @summary Acceptance tests: collector can deal with retained objects
99 * @requires vm.gc.Shenandoah
100 *
101 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
102 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
103 * TestRetainObjects
104 */
105
106 /*
107 * @test id=no-tlab
108 * @summary Acceptance tests: collector can deal with retained objects
109 * @requires vm.gc.Shenandoah
110 *
111 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
112 * -XX:+UseShenandoahGC
113 * -XX:-UseTLAB -XX:+ShenandoahVerify
114 * TestRetainObjects
115 */
116
117 /*
118 * @test id=iu-aggressive
119 * @summary Acceptance tests: collector can deal with retained objects
120 * @requires vm.gc.Shenandoah
121 *
122 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
123 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
124 * -XX:+ShenandoahOOMDuringEvacALot
125 * TestRetainObjects
126 *
127 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
128 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
129 * -XX:+ShenandoahAllocFailureALot
130 * TestRetainObjects
131 *
132 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
133 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
134 * TestRetainObjects
135 */
136
137 /*
138 * @test id=iu
139 * @summary Acceptance tests: collector can deal with retained objects
140 * @requires vm.gc.Shenandoah
141 *
142 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
143 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
144 * -XX:+ShenandoahVerify
145 * TestRetainObjects
146 *
147 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
148 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
149 * TestRetainObjects
150 */
151
152 public class TestRetainObjects {
153
154 static final int COUNT = 10_000_000;
155 static final int WINDOW = 10_000;
156
157 static final String[] reachable = new String[WINDOW];
158
159 public static void main(String[] args) throws Exception {
160 int rIdx = 0;
161 for (int c = 0; c < COUNT; c++) {
162 reachable[rIdx] = ("LargeString" + c);
163 rIdx++;
164 if (rIdx >= WINDOW) {
165 rIdx = 0;
166 }
167 }
168 }
169
170 }