1 /*
2 * Copyright (c) 2017, 2020, 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
28 * @summary Test that periodic GC is working
29 * @requires vm.gc.Shenandoah
30 * @library /test/lib
31 * @run driver TestPeriodicGC
32 */
33
34 import java.util.*;
35
36 import jdk.test.lib.Asserts;
37 import jdk.test.lib.process.ProcessTools;
38 import jdk.test.lib.process.OutputAnalyzer;
39
40 public class TestPeriodicGC {
41
42 public static void testWith(String msg, boolean periodic, String... args) throws Exception {
43 String[] cmds = Arrays.copyOf(args, args.length + 2);
44 cmds[args.length] = TestPeriodicGC.class.getName();
45 cmds[args.length + 1] = "test";
46 OutputAnalyzer output = ProcessTools.executeLimitedTestJava(cmds);
47
48 output.shouldHaveExitValue(0);
49 if (periodic) {
50 output.shouldContain("Trigger: Time since last GC");
51 }
52 if (!periodic) {
53 output.shouldNotContain("Trigger: Time since last GC");
54 }
55 }
56
57 public static void testGenerational(boolean periodic, String... args) throws Exception {
58 String[] cmds = Arrays.copyOf(args, args.length + 2);
59 cmds[args.length] = TestPeriodicGC.class.getName();
60 cmds[args.length + 1] = "test";
61 ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(cmds);
62
63 OutputAnalyzer output = new OutputAnalyzer(pb.start());
64 output.shouldHaveExitValue(0);
65 if (periodic) {
66 output.shouldContain("Trigger (Young): Time since last GC");
67 output.shouldContain("Trigger (Old): Time since last GC");
68 } else {
69 output.shouldNotContain("Trigger (Young): Time since last GC");
70 output.shouldNotContain("Trigger (Old): Time since last GC");
71 }
72 }
73
74 public static void main(String[] args) throws Exception {
75 if (args.length > 0 && args[0].equals("test")) {
76 Thread.sleep(5000); // stay idle
77 return;
78 }
79
80 String[] enabled = new String[] {
81 "adaptive",
82 "compact",
83 "static",
84 };
85
86 for (String h : enabled) {
87 testWith("Zero interval with " + h,
88 false,
89 "-Xlog:gc",
90 "-XX:+UnlockDiagnosticVMOptions",
91 "-XX:+UnlockExperimentalVMOptions",
92 "-XX:+UseShenandoahGC",
93 "-XX:ShenandoahGCHeuristics=" + h,
94 "-XX:ShenandoahGuaranteedGCInterval=0"
95 );
96
97 testWith("Short interval with " + h,
98 true,
99 "-Xlog:gc",
100 "-XX:+UnlockDiagnosticVMOptions",
101 "-XX:+UnlockExperimentalVMOptions",
102 "-XX:+UseShenandoahGC",
103 "-XX:ShenandoahGCHeuristics=" + h,
104 "-XX:ShenandoahGuaranteedGCInterval=1000"
105 );
106
107 testWith("Long interval with " + h,
108 false,
109 "-Xlog:gc",
110 "-XX:+UnlockDiagnosticVMOptions",
111 "-XX:+UnlockExperimentalVMOptions",
112 "-XX:+UseShenandoahGC",
113 "-XX:ShenandoahGCHeuristics=" + h,
114 "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
115 );
116 }
117
118 testWith("Short interval with aggressive",
119 false,
120 "-Xlog:gc",
121 "-XX:+UnlockDiagnosticVMOptions",
122 "-XX:+UnlockExperimentalVMOptions",
123 "-XX:+UseShenandoahGC",
124 "-XX:ShenandoahGCHeuristics=aggressive",
125 "-XX:ShenandoahGuaranteedGCInterval=1000"
126 );
127
128 testWith("Zero interval with passive",
129 false,
130 "-Xlog:gc",
131 "-XX:+UnlockDiagnosticVMOptions",
132 "-XX:+UnlockExperimentalVMOptions",
133 "-XX:+UseShenandoahGC",
134 "-XX:ShenandoahGCMode=passive",
135 "-XX:ShenandoahGuaranteedGCInterval=0"
136 );
137
138 testWith("Short interval with passive",
139 false,
140 "-Xlog:gc",
141 "-XX:+UnlockDiagnosticVMOptions",
142 "-XX:+UnlockExperimentalVMOptions",
143 "-XX:+UseShenandoahGC",
144 "-XX:ShenandoahGCMode=passive",
145 "-XX:ShenandoahGuaranteedGCInterval=1000"
146 );
147
148 testGenerational(true,
149 "-Xlog:gc",
150 "-XX:+UnlockDiagnosticVMOptions",
151 "-XX:+UnlockExperimentalVMOptions",
152 "-XX:+UseShenandoahGC",
153 "-XX:ShenandoahGCMode=generational",
154 "-XX:ShenandoahGuaranteedYoungGCInterval=1000",
155 "-XX:ShenandoahGuaranteedOldGCInterval=1500"
156 );
157
158 testGenerational(false,
159 "-Xlog:gc",
160 "-XX:+UnlockDiagnosticVMOptions",
161 "-XX:+UnlockExperimentalVMOptions",
162 "-XX:+UseShenandoahGC",
163 "-XX:ShenandoahGCMode=generational",
164 "-XX:ShenandoahGuaranteedYoungGCInterval=0",
165 "-XX:ShenandoahGuaranteedOldGCInterval=0"
166 );
167 }
168
169 }