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 ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(cmds);
47
48 OutputAnalyzer output = new OutputAnalyzer(pb.start());
49 output.shouldHaveExitValue(0);
50 if (periodic && !output.getOutput().contains("Trigger (GLOBAL): Time since last GC")) {
51 throw new AssertionError(msg + ": Should have periodic GC in logs");
52 }
53 if (!periodic && output.getOutput().contains("Trigger (GLOBAL): Time since last GC")) {
54 throw new AssertionError(msg + ": Should not have periodic GC in logs");
55 }
56 }
57
58 public static void testGenerational(boolean periodic, String... args) throws Exception {
59 String[] cmds = Arrays.copyOf(args, args.length + 2);
60 cmds[args.length] = TestPeriodicGC.class.getName();
61 cmds[args.length + 1] = "test";
62 ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(cmds);
63
64 OutputAnalyzer output = new OutputAnalyzer(pb.start());
65 output.shouldHaveExitValue(0);
66 if (periodic) {
67 if (!output.getOutput().contains("Trigger (YOUNG): Time since last GC")) {
68 throw new AssertionError("Generational mode: Should have periodic young GC in logs");
69 }
70 if (!output.getOutput().contains("Trigger (OLD): Time since last GC")) {
71 throw new AssertionError("Generational mode: Should have periodic old GC in logs");
72 }
73 } else {
74 if (output.getOutput().contains("Trigger (YOUNG): Time since last GC")) {
75 throw new AssertionError("Generational mode: Should not have periodic young GC in logs");
76 }
77 if (output.getOutput().contains("Trigger (OLD): Time since last GC")) {
78 throw new AssertionError("Generational mode: Should not have periodic old GC in logs");
79 }
80 }
81 }
82
83 public static void main(String[] args) throws Exception {
84 if (args.length > 0 && args[0].equals("test")) {
85 Thread.sleep(5000); // stay idle
86 return;
87 }
88
89 String[] enabled = new String[] {
90 "adaptive",
91 "compact",
92 "static",
93 };
94
95 for (String h : enabled) {
96 testWith("Zero interval with " + h,
97 false,
98 "-Xlog:gc",
99 "-XX:+UnlockDiagnosticVMOptions",
100 "-XX:+UnlockExperimentalVMOptions",
101 "-XX:+UseShenandoahGC",
102 "-XX:ShenandoahGCHeuristics=" + h,
103 "-XX:ShenandoahGuaranteedGCInterval=0"
104 );
105
106 testWith("Short interval with " + h,
107 true,
108 "-Xlog:gc",
109 "-XX:+UnlockDiagnosticVMOptions",
110 "-XX:+UnlockExperimentalVMOptions",
111 "-XX:+UseShenandoahGC",
112 "-XX:ShenandoahGCHeuristics=" + h,
113 "-XX:ShenandoahGuaranteedGCInterval=1000"
114 );
115
116 testWith("Long interval with " + h,
117 false,
118 "-Xlog:gc",
119 "-XX:+UnlockDiagnosticVMOptions",
120 "-XX:+UnlockExperimentalVMOptions",
121 "-XX:+UseShenandoahGC",
122 "-XX:ShenandoahGCHeuristics=" + h,
123 "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
124 );
125 }
126
127 testWith("Zero interval with iu mode",
128 false,
129 "-Xlog:gc",
130 "-XX:+UnlockDiagnosticVMOptions",
131 "-XX:+UnlockExperimentalVMOptions",
132 "-XX:+UseShenandoahGC",
133 "-XX:ShenandoahGCMode=iu",
134 "-XX:ShenandoahGuaranteedGCInterval=0"
135 );
136
137 testWith("Short interval with iu mode",
138 true,
139 "-Xlog:gc",
140 "-XX:+UnlockDiagnosticVMOptions",
141 "-XX:+UnlockExperimentalVMOptions",
142 "-XX:+UseShenandoahGC",
143 "-XX:ShenandoahGCMode=iu",
144 "-XX:ShenandoahGuaranteedGCInterval=1000"
145 );
146
147 testWith("Long interval with iu mode",
148 false,
149 "-Xlog:gc",
150 "-XX:+UnlockDiagnosticVMOptions",
151 "-XX:+UnlockExperimentalVMOptions",
152 "-XX:+UseShenandoahGC",
153 "-XX:ShenandoahGCMode=iu",
154 "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
155 );
156
157 testWith("Short interval with aggressive",
158 false,
159 "-Xlog:gc",
160 "-XX:+UnlockDiagnosticVMOptions",
161 "-XX:+UnlockExperimentalVMOptions",
162 "-XX:+UseShenandoahGC",
163 "-XX:ShenandoahGCHeuristics=aggressive",
164 "-XX:ShenandoahGuaranteedGCInterval=1000"
165 );
166
167 testWith("Zero interval with passive",
168 false,
169 "-Xlog:gc",
170 "-XX:+UnlockDiagnosticVMOptions",
171 "-XX:+UnlockExperimentalVMOptions",
172 "-XX:+UseShenandoahGC",
173 "-XX:ShenandoahGCMode=passive",
174 "-XX:ShenandoahGuaranteedGCInterval=0"
175 );
176
177 testWith("Short interval with passive",
178 false,
179 "-Xlog:gc",
180 "-XX:+UnlockDiagnosticVMOptions",
181 "-XX:+UnlockExperimentalVMOptions",
182 "-XX:+UseShenandoahGC",
183 "-XX:ShenandoahGCMode=passive",
184 "-XX:ShenandoahGuaranteedGCInterval=1000"
185 );
186
187 testGenerational(true,
188 "-Xlog:gc",
189 "-XX:+UnlockDiagnosticVMOptions",
190 "-XX:+UnlockExperimentalVMOptions",
191 "-XX:+UseShenandoahGC",
192 "-XX:ShenandoahGCMode=generational",
193 "-XX:ShenandoahGuaranteedYoungGCInterval=1000",
194 "-XX:ShenandoahGuaranteedOldGCInterval=1500"
195 );
196
197 testGenerational(false,
198 "-Xlog:gc",
199 "-XX:+UnlockDiagnosticVMOptions",
200 "-XX:+UnlockExperimentalVMOptions",
201 "-XX:+UseShenandoahGC",
202 "-XX:ShenandoahGCMode=generational",
203 "-XX:ShenandoahGuaranteedYoungGCInterval=0",
204 "-XX:ShenandoahGuaranteedOldGCInterval=0"
205 );
206 }
207
208 }