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 TestPrintGCDetails
26 * @bug 8035406 8027295 8035398
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 */
32
33 import com.oracle.java.testlibrary.ProcessTools;
34 import com.oracle.java.testlibrary.OutputAnalyzer;
35
36 public class TestGCLogMessages {
37 public static void main(String[] args) throws Exception {
38 testNormalLogs();
39 testWithToSpaceExhaustionLogs();
40 }
41
42 private static void testNormalLogs() throws Exception {
43
44 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
45 "-Xmx10M",
46 GCTest.class.getName());
47
48 OutputAnalyzer output = new OutputAnalyzer(pb.start());
49
50 output.shouldNotContain("[Redirty Cards");
51 output.shouldNotContain("[Code Root Purge");
52 output.shouldNotContain("[Young Free CSet");
53 output.shouldNotContain("[Non-Young Free CSet");
54 output.shouldHaveExitValue(0);
55
56 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
57 "-Xmx10M",
58 "-XX:+PrintGCDetails",
59 GCTest.class.getName());
60
61 output = new OutputAnalyzer(pb.start());
62
63 output.shouldContain("[Redirty Cards");
64 output.shouldContain("[Code Root Purge");
65 output.shouldNotContain("[Young Free CSet");
66 output.shouldNotContain("[Non-Young Free CSet");
67 output.shouldHaveExitValue(0);
68
69 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
70 "-Xmx10M",
71 "-XX:+PrintGCDetails",
72 "-XX:+UnlockExperimentalVMOptions",
73 "-XX:G1LogLevel=finest",
74 GCTest.class.getName());
75
76 output = new OutputAnalyzer(pb.start());
77
78 output.shouldContain("[Redirty Cards");
79 output.shouldContain("[Code Root Purge");
80 output.shouldContain("[Young Free CSet");
81 output.shouldContain("[Non-Young Free CSet");
82
83 // also check evacuation failure messages once
84 output.shouldNotContain("[Evacuation Failure");
85 output.shouldNotContain("[Recalculate Used");
86 output.shouldNotContain("[Remove Self Forwards");
87 output.shouldNotContain("[Restore RemSet");
88 output.shouldHaveExitValue(0);
89 }
90
91 private static void testWithToSpaceExhaustionLogs() throws Exception {
92 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
93 "-Xmx10M",
94 "-Xmn5M",
95 "-XX:+PrintGCDetails",
96 GCTestWithToSpaceExhaustion.class.getName());
97
98 OutputAnalyzer output = new OutputAnalyzer(pb.start());
99 output.shouldContain("[Evacuation Failure");
100 output.shouldNotContain("[Recalculate Used");
101 output.shouldNotContain("[Remove Self Forwards");
102 output.shouldNotContain("[Restore RemSet");
103 output.shouldHaveExitValue(0);
104
105 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
106 "-Xmx10M",
107 "-Xmn5M",
108 "-XX:+PrintGCDetails",
109 "-XX:+UnlockExperimentalVMOptions",
110 "-XX:G1LogLevel=finest",
111 GCTestWithToSpaceExhaustion.class.getName());
112
113 output = new OutputAnalyzer(pb.start());
114 output.shouldContain("[Evacuation Failure");
115 output.shouldContain("[Recalculate Used");
116 output.shouldContain("[Remove Self Forwards");
117 output.shouldContain("[Restore RemSet");
118 output.shouldHaveExitValue(0);
119 }
120
121 static class GCTest {
122 private static byte[] garbage;
123 public static void main(String [] args) {
124 System.out.println("Creating garbage");
125 // create 128MB of garbage. This should result in at least one GC
126 for (int i = 0; i < 1024; i++) {
127 garbage = new byte[128 * 1024];
128 }
129 System.out.println("Done");
130 }
131 }
132
133 static class GCTestWithToSpaceExhaustion {
134 private static byte[] garbage;
135 private static byte[] largeObject;
136 public static void main(String [] args) {
137 largeObject = new byte[5*1024*1024];
138 System.out.println("Creating garbage");
139 // create 128MB of garbage. This should result in at least one GC,
140 // some of them with to-space exhaustion.
141 for (int i = 0; i < 1024; i++) {
142 garbage = new byte[128 * 1024];
143 }
144 System.out.println("Done");
145 }
146 }
147 }