1 /*
2 * Copyright (c) 2017, 2020, 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 TestPeriodicGC
26 * @summary Test that periodic GC is working
27 * @key gc
28 * @requires vm.gc.Shenandoah & !vm.graal.enabled
29 * @library /test/lib
30 * @run driver TestPeriodicGC
31 */
32
33 import java.util.*;
34
35 import jdk.test.lib.Asserts;
36 import jdk.test.lib.process.ProcessTools;
37 import jdk.test.lib.process.OutputAnalyzer;
38
39 public class TestPeriodicGC {
40
41 public static void testWith(String msg, boolean periodic, String... args) throws Exception {
42 String[] cmds = Arrays.copyOf(args, args.length + 2);
43 cmds[args.length] = TestPeriodicGC.class.getName();
44 cmds[args.length + 1] = "test";
45 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
46
47 OutputAnalyzer output = new OutputAnalyzer(pb.start());
48 output.shouldHaveExitValue(0);
49 if (periodic && !output.getOutput().contains("Trigger: Time since last GC")) {
50 throw new AssertionError(msg + ": Should have periodic GC in logs");
51 }
52 if (!periodic && output.getOutput().contains("Trigger: Time since last GC")) {
53 throw new AssertionError(msg + ": Should not have periodic GC in logs");
54 }
55 }
56
57 public static void main(String[] args) throws Exception {
58 if (args.length > 0 && args[0].equals("test")) {
59 Thread.sleep(5000); // stay idle
60 return;
61 }
62
63 String[] enabled = new String[] {
64 "adaptive",
65 "compact",
66 "static",
67 };
68
69 for (String h : enabled) {
70 testWith("Zero interval with " + h,
71 false,
72 "-Xlog:gc",
73 "-XX:+UnlockDiagnosticVMOptions",
74 "-XX:+UnlockExperimentalVMOptions",
75 "-XX:+UseShenandoahGC",
76 "-XX:ShenandoahGCHeuristics=" + h,
77 "-XX:ShenandoahGuaranteedGCInterval=0"
78 );
79
80 testWith("Short interval with " + h,
81 true,
82 "-Xlog:gc",
83 "-XX:+UnlockDiagnosticVMOptions",
84 "-XX:+UnlockExperimentalVMOptions",
85 "-XX:+UseShenandoahGC",
86 "-XX:ShenandoahGCHeuristics=" + h,
87 "-XX:ShenandoahGuaranteedGCInterval=1000"
88 );
89
90 testWith("Long interval with " + h,
91 false,
92 "-Xlog:gc",
93 "-XX:+UnlockDiagnosticVMOptions",
94 "-XX:+UnlockExperimentalVMOptions",
95 "-XX:+UseShenandoahGC",
96 "-XX:ShenandoahGCHeuristics=" + h,
97 "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
98 );
99 }
100
101 testWith("Zero interval with iu mode",
102 false,
103 "-Xlog:gc",
104 "-XX:+UnlockDiagnosticVMOptions",
105 "-XX:+UnlockExperimentalVMOptions",
106 "-XX:+UseShenandoahGC",
107 "-XX:ShenandoahGCMode=iu",
108 "-XX:ShenandoahGuaranteedGCInterval=0"
109 );
110
111 testWith("Short interval with iu mode",
112 true,
113 "-Xlog:gc",
114 "-XX:+UnlockDiagnosticVMOptions",
115 "-XX:+UnlockExperimentalVMOptions",
116 "-XX:+UseShenandoahGC",
117 "-XX:ShenandoahGCMode=iu",
118 "-XX:ShenandoahGuaranteedGCInterval=1000"
119 );
120
121 testWith("Long interval with iu mode",
122 false,
123 "-Xlog:gc",
124 "-XX:+UnlockDiagnosticVMOptions",
125 "-XX:+UnlockExperimentalVMOptions",
126 "-XX:+UseShenandoahGC",
127 "-XX:ShenandoahGCMode=iu",
128 "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
129 );
130
131 testWith("Short interval with aggressive",
132 false,
133 "-Xlog:gc",
134 "-XX:+UnlockDiagnosticVMOptions",
135 "-XX:+UnlockExperimentalVMOptions",
136 "-XX:+UseShenandoahGC",
137 "-XX:ShenandoahGCHeuristics=aggressive",
138 "-XX:ShenandoahGuaranteedGCInterval=1000"
139 );
140
141 testWith("Zero interval with passive",
142 false,
143 "-Xlog:gc",
144 "-XX:+UnlockDiagnosticVMOptions",
145 "-XX:+UnlockExperimentalVMOptions",
146 "-XX:+UseShenandoahGC",
147 "-XX:ShenandoahGCMode=passive",
148 "-XX:ShenandoahGuaranteedGCInterval=0"
149 );
150
151 testWith("Short interval with passive",
152 false,
153 "-Xlog:gc",
154 "-XX:+UnlockDiagnosticVMOptions",
155 "-XX:+UnlockExperimentalVMOptions",
156 "-XX:+UseShenandoahGC",
157 "-XX:ShenandoahGCMode=passive",
158 "-XX:ShenandoahGuaranteedGCInterval=1000"
159 );
160 }
161
162 }