1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. 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 * @test TestGCLogMessages
26 * @bug 8035406 8027295 8035398 8019342 8027959 8048179
27 * @summary Ensure that the PrintGCDetails output for a minor GC with G1
28 * includes the expected necessary messages.
29 * @key gc
30 * @library /testlibrary
31 * @build com.oracle.java.testlibrary.*
32 * @run main/othervm TestGCLogMessages
33 */
34
35 import com.oracle.java.testlibrary.ProcessTools;
36 import com.oracle.java.testlibrary.OutputAnalyzer;
37
38 public class TestGCLogMessages {
39 public static void main(String[] args) throws Exception {
40 testNormalLogs();
41 testWithToSpaceExhaustionLogs();
42 }
43
44 private static void testNormalLogs() throws Exception {
45
46 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
47 "-Xmx10M",
48 GCTest.class.getName());
49
50 OutputAnalyzer output = new OutputAnalyzer(pb.start());
51
52 output.shouldNotContain("[Redirty Cards");
53 output.shouldNotContain("[Parallel Redirty");
54 output.shouldNotContain("[Redirtied Cards");
55 output.shouldNotContain("[Code Root Purge");
56 output.shouldNotContain("[String Dedup Fixup");
57 output.shouldNotContain("[Young Free CSet");
58 output.shouldNotContain("[Non-Young Free CSet");
59 output.shouldNotContain("[Humongous Register");
60 output.shouldNotContain("[Humongous Reclaim");
61 output.shouldHaveExitValue(0);
62
63 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
64 "-XX:+UseStringDeduplication",
65 "-Xmx10M",
66 "-XX:+PrintGCDetails",
67 GCTest.class.getName());
68
69 output = new OutputAnalyzer(pb.start());
70
71 output.shouldContain("[Redirty Cards");
72 output.shouldNotContain("[Parallel Redirty");
73 output.shouldNotContain("[Redirtied Cards");
74 output.shouldContain("[Code Root Purge");
75 output.shouldContain("[String Dedup Fixup");
76 output.shouldNotContain("[Young Free CSet");
77 output.shouldNotContain("[Non-Young Free CSet");
78 output.shouldContain("[Humongous Register");
79 output.shouldNotContain("[Humongous Total");
80 output.shouldNotContain("[Humongous Candidate");
81 output.shouldContain("[Humongous Reclaim");
82 output.shouldNotContain("[Humongous Reclaimed");
83 output.shouldHaveExitValue(0);
84
85 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
86 "-XX:+UseStringDeduplication",
87 "-Xmx10M",
88 "-XX:+PrintGCDetails",
89 "-XX:+UnlockExperimentalVMOptions",
90 "-XX:G1LogLevel=finest",
91 GCTest.class.getName());
92
93 output = new OutputAnalyzer(pb.start());
94
95 output.shouldContain("[Redirty Cards");
96 output.shouldContain("[Parallel Redirty");
97 output.shouldContain("[Redirtied Cards");
98 output.shouldContain("[Code Root Purge");
99 output.shouldContain("[String Dedup Fixup");
100 output.shouldContain("[Young Free CSet");
101 output.shouldContain("[Non-Young Free CSet");
102 output.shouldContain("[Humongous Register");
103 output.shouldContain("[Humongous Total");
104 output.shouldContain("[Humongous Candidate");
105 output.shouldContain("[Humongous Reclaim");
106 output.shouldContain("[Humongous Reclaimed");
107 output.shouldHaveExitValue(0);
108 }
109
110 private static void testWithToSpaceExhaustionLogs() throws Exception {
111 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
112 "-Xmx32M",
113 "-Xmn16M",
114 "-XX:+PrintGCDetails",
115 GCTestWithToSpaceExhaustion.class.getName());
116
117 OutputAnalyzer output = new OutputAnalyzer(pb.start());
118 output.shouldContain("[Evacuation Failure");
119 output.shouldNotContain("[Recalculate Used");
120 output.shouldNotContain("[Remove Self Forwards");
121 output.shouldNotContain("[Restore RemSet");
122 output.shouldHaveExitValue(0);
123
124 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
125 "-Xmx32M",
126 "-Xmn16M",
127 "-XX:+PrintGCDetails",
128 "-XX:+UnlockExperimentalVMOptions",
129 "-XX:G1LogLevel=finest",
130 GCTestWithToSpaceExhaustion.class.getName());
131
132 output = new OutputAnalyzer(pb.start());
133 output.shouldContain("[Evacuation Failure");
134 output.shouldContain("[Recalculate Used");
135 output.shouldContain("[Remove Self Forwards");
136 output.shouldContain("[Restore RemSet");
137 output.shouldHaveExitValue(0);
138 }
139
140 static class GCTest {
141 private static byte[] garbage;
142 public static void main(String [] args) {
143 System.out.println("Creating garbage");
144 // create 128MB of garbage. This should result in at least one GC
145 for (int i = 0; i < 1024; i++) {
146 garbage = new byte[128 * 1024];
147 }
148 System.out.println("Done");
149 }
150 }
151
152 static class GCTestWithToSpaceExhaustion {
153 private static byte[] garbage;
154 private static byte[] largeObject;
155 public static void main(String [] args) {
156 largeObject = new byte[16*1024*1024];
157 System.out.println("Creating garbage");
158 // create 128MB of garbage. This should result in at least one GC,
159 // some of them with to-space exhaustion.
160 for (int i = 0; i < 1024; i++) {
161 garbage = new byte[128 * 1024];
162 }
163 System.out.println("Done");
164 }
165 }
166 }