1 /*
2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 /*
25 * @test TestRetainObjects
26 * @summary Acceptance tests: collector can deal with retained objects
27 * @key gc
28 * @requires vm.gc.Shenandoah & !vm.graal.enabled
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 TestRetainObjects
53 * @summary Acceptance tests: collector can deal with retained objects
54 * @key gc
55 * @requires vm.gc.Shenandoah & !vm.graal.enabled
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 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
72 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
73 * -XX:+ShenandoahVerify
74 * TestRetainObjects
75 *
76 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
77 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
78 * TestRetainObjects
79 *
80 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
81 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
82 * TestRetainObjects
83 *
84 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
85 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
86 * TestRetainObjects
87 *
88 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
89 * -XX:+UseShenandoahGC
90 * -XX:-UseTLAB -XX:+ShenandoahVerify
91 * TestRetainObjects
92 */
93
94 /*
95 * @test TestRetainObjects
96 * @summary Acceptance tests: collector can deal with retained objects
97 * @key gc
98 * @requires vm.gc.Shenandoah & !vm.graal.enabled
99 *
100 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
101 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal -XX:ShenandoahGCHeuristics=aggressive
102 * -XX:+ShenandoahOOMDuringEvacALot
103 * TestRetainObjects
104 *
105 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
106 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal -XX:ShenandoahGCHeuristics=aggressive
107 * -XX:+ShenandoahAllocFailureALot
108 * TestRetainObjects
109 *
110 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
111 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal -XX:ShenandoahGCHeuristics=aggressive
112 * TestRetainObjects
113 *
114 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
115 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal
116 * -XX:+ShenandoahVerify
117 * TestRetainObjects
118 *
119 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
120 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal
121 * TestRetainObjects
122 */
123
124 public class TestRetainObjects {
125
126 static final int COUNT = 10_000_000;
127 static final int WINDOW = 10_000;
128
129 static final String[] reachable = new String[WINDOW];
130
131 public static void main(String[] args) throws Exception {
132 int rIdx = 0;
133 for (int c = 0; c < COUNT; c++) {
134 reachable[rIdx] = ("LargeString" + c);
135 rIdx++;
136 if (rIdx >= WINDOW) {
137 rIdx = 0;
138 }
139 }
140 }
141
142 }