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 * @requires vm.gc.Shenandoah
28 *
29 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
30 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
31 * -XX:+ShenandoahDegeneratedGC
32 * -Dtarget=10000
33 * TestLotsOfCycles
34 *
35 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
36 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
37 * -XX:-ShenandoahDegeneratedGC
38 * -Dtarget=10000
39 * TestLotsOfCycles
40 */
41
42 /*
43 * @test id=aggressive
44 * @requires vm.gc.Shenandoah
45 *
46 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
47 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
48 * -XX:+ShenandoahOOMDuringEvacALot
49 * -Dtarget=1000
50 * TestLotsOfCycles
51 *
52 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
53 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
54 * -XX:+ShenandoahAllocFailureALot
55 * -Dtarget=1000
56 * TestLotsOfCycles
57 *
58 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
59 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
60 * -Dtarget=1000
61 * TestLotsOfCycles
62 */
63
64 /*
65 * @test id=adaptive
66 * @requires vm.gc.Shenandoah
67 *
68 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
69 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
70 * -Dtarget=10000
71 * TestLotsOfCycles
72 */
73
74 /*
75 * @test id=static
76 * @requires vm.gc.Shenandoah
77 *
78 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
79 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
80 * -Dtarget=10000
81 * TestLotsOfCycles
82 */
83
84 /*
85 * @test id=compact
86 * @requires vm.gc.Shenandoah
87 *
88 * @run main/othervm/timeout=480 -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
89 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
90 * -Dtarget=1000
91 * TestLotsOfCycles
92 */
93
94 public class TestLotsOfCycles {
95
96 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle
97 static final long STRIDE = 100_000;
98
99 static volatile Object sink;
100
101 public static void main(String[] args) throws Exception {
102 long count = TARGET_MB * 1024 * 1024 / 16;
103 for (long c = 0; c < count; c += STRIDE) {
104 for (long s = 0; s < STRIDE; s++) {
105 sink = new Object();
106 }
107 Thread.sleep(1);
108 }
109 }
110
111 }