1 /*
2 * Copyright (c) 2017, 2020, 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
27 * @summary Test that periodic GC is working
28 * @requires vm.gc.Shenandoah
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 OutputAnalyzer output = ProcessTools.executeLimitedTestJava(cmds);
46
47 output.shouldHaveExitValue(0);
48 if (periodic && !output.getOutput().contains("Trigger: Time since last GC")) {
49 throw new AssertionError(msg + ": Should have periodic GC in logs");
50 }
51 if (!periodic && output.getOutput().contains("Trigger: Time since last GC")) {
52 throw new AssertionError(msg + ": Should not have periodic GC in logs");
53 }
54 }
55
56 public static void main(String[] args) throws Exception {
57 if (args.length > 0 && args[0].equals("test")) {
58 Thread.sleep(5000); // stay idle
59 return;
60 }
61
62 String[] enabled = new String[] {
63 "adaptive",
64 "compact",
65 "static",
66 };
67
68 for (String h : enabled) {
69 testWith("Zero interval with " + h,
70 false,
71 "-Xlog:gc",
72 "-XX:+UnlockDiagnosticVMOptions",
73 "-XX:+UnlockExperimentalVMOptions",
74 "-XX:+UseShenandoahGC",
75 "-XX:ShenandoahGCHeuristics=" + h,
76 "-XX:ShenandoahGuaranteedGCInterval=0"
77 );
78
79 testWith("Short interval with " + h,
80 true,
81 "-Xlog:gc",
82 "-XX:+UnlockDiagnosticVMOptions",
83 "-XX:+UnlockExperimentalVMOptions",
84 "-XX:+UseShenandoahGC",
85 "-XX:ShenandoahGCHeuristics=" + h,
86 "-XX:ShenandoahGuaranteedGCInterval=1000"
87 );
88
89 testWith("Long interval with " + h,
90 false,
91 "-Xlog:gc",
92 "-XX:+UnlockDiagnosticVMOptions",
93 "-XX:+UnlockExperimentalVMOptions",
94 "-XX:+UseShenandoahGC",
95 "-XX:ShenandoahGCHeuristics=" + h,
96 "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
97 );
98 }
99
100 testWith("Short interval with aggressive",
101 false,
102 "-Xlog:gc",
103 "-XX:+UnlockDiagnosticVMOptions",
104 "-XX:+UnlockExperimentalVMOptions",
105 "-XX:+UseShenandoahGC",
106 "-XX:ShenandoahGCHeuristics=aggressive",
107 "-XX:ShenandoahGuaranteedGCInterval=1000"
108 );
109
110 testWith("Zero interval with passive",
111 false,
112 "-Xlog:gc",
113 "-XX:+UnlockDiagnosticVMOptions",
114 "-XX:+UnlockExperimentalVMOptions",
115 "-XX:+UseShenandoahGC",
116 "-XX:ShenandoahGCMode=passive",
117 "-XX:ShenandoahGuaranteedGCInterval=0"
118 );
119
120 testWith("Short interval with passive",
121 false,
122 "-Xlog:gc",
123 "-XX:+UnlockDiagnosticVMOptions",
124 "-XX:+UnlockExperimentalVMOptions",
125 "-XX:+UseShenandoahGC",
126 "-XX:ShenandoahGCMode=passive",
127 "-XX:ShenandoahGuaranteedGCInterval=1000"
128 );
129 }
130
131 }