TestGCLogMessages.java revision 8013:f4b8d39bd2a7 
1/*
2 * Copyright (c) 2014, 2015, 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
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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 * @modules java.base/sun.misc
32 *          java.management
33 */
34
35import com.oracle.java.testlibrary.ProcessTools;
36import com.oracle.java.testlibrary.OutputAnalyzer;
37
38public 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}
167