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 * @requires vm.gc.Shenandoah
29 *
30 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
31 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
32 * -XX:+ShenandoahDegeneratedGC
33 * -Dtarget=10000
34 * TestLotsOfCycles
35 *
36 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
37 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
38 * -XX:-ShenandoahDegeneratedGC
39 * -Dtarget=10000
40 * TestLotsOfCycles
41 */
42
43 /*
44 * @test id=aggressive
45 * @requires vm.gc.Shenandoah
46 *
47 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
48 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
49 * -XX:+ShenandoahOOMDuringEvacALot
50 * -Dtarget=1000
51 * TestLotsOfCycles
52 *
53 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
54 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
55 * -XX:+ShenandoahAllocFailureALot
56 * -Dtarget=1000
57 * TestLotsOfCycles
58 *
59 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
60 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
61 * -Dtarget=1000
62 * TestLotsOfCycles
63 */
64
65 /*
66 * @test id=adaptive
67 * @requires vm.gc.Shenandoah
68 *
69 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
70 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
71 * -Dtarget=10000
72 * TestLotsOfCycles
73 */
74
75 /*
76 * @test id=generational
77 * @requires vm.gc.Shenandoah
78 *
79 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
80 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
81 * -Dtarget=10000
82 * TestLotsOfCycles
83 */
84
85 /*
86 * @test id=static
87 * @requires vm.gc.Shenandoah
88 *
89 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
90 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
91 * -Dtarget=10000
92 * TestLotsOfCycles
93 */
94
95 /*
96 * @test id=compact
97 * @requires vm.gc.Shenandoah
98 *
99 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
100 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
101 * -Dtarget=1000
102 * TestLotsOfCycles
103 */
104
105 public class TestLotsOfCycles {
106
107 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle
108 static final long STRIDE = 100_000;
109
110 static volatile Object sink;
111
112 public static void main(String[] args) throws Exception {
113 long count = TARGET_MB * 1024 * 1024 / 16;
114 for (long c = 0; c < count; c += STRIDE) {
115 for (long s = 0; s < STRIDE; s++) {
116 sink = new Object();
117 }
118 Thread.sleep(1);
119 }
120 }
121
122 }