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test/gc/g1/TestGCLogMessages.java@595c0f60d50d
test/gc/g1/TestGCLogMessages.java
Tue, 18 Mar 2014 19:07:22 +0100
- author
- pliden
- date
- Tue, 18 Mar 2014 19:07:22 +0100
- changeset 6413
- 595c0f60d50d
- parent 6406
- eff02b5bd56c
- child 6876
- 710a3c8b516e
- child 6930
- 570cb6369f17
- permissions
- -rw-r--r--
8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp
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 */
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 */
33 import com.oracle.java.testlibrary.ProcessTools;
34 import com.oracle.java.testlibrary.OutputAnalyzer;
36 public class TestGCLogMessages {
37 public static void main(String[] args) throws Exception {
38 testNormalLogs();
39 testWithToSpaceExhaustionLogs();
40 }
42 private static void testNormalLogs() throws Exception {
44 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
45 "-Xmx10M",
46 GCTest.class.getName());
48 OutputAnalyzer output = new OutputAnalyzer(pb.start());
50 output.shouldNotContain("[Redirty Cards");
51 output.shouldNotContain("[Code Root Purge");
52 output.shouldNotContain("[String Dedup Fixup");
53 output.shouldNotContain("[Young Free CSet");
54 output.shouldNotContain("[Non-Young Free CSet");
55 output.shouldHaveExitValue(0);
57 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
58 "-XX:+UseStringDeduplication",
59 "-Xmx10M",
60 "-XX:+PrintGCDetails",
61 GCTest.class.getName());
63 output = new OutputAnalyzer(pb.start());
65 output.shouldContain("[Redirty Cards");
66 output.shouldContain("[Code Root Purge");
67 output.shouldContain("[String Dedup Fixup");
68 output.shouldNotContain("[Young Free CSet");
69 output.shouldNotContain("[Non-Young Free CSet");
70 output.shouldHaveExitValue(0);
72 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
73 "-XX:+UseStringDeduplication",
74 "-Xmx10M",
75 "-XX:+PrintGCDetails",
76 "-XX:+UnlockExperimentalVMOptions",
77 "-XX:G1LogLevel=finest",
78 GCTest.class.getName());
80 output = new OutputAnalyzer(pb.start());
82 output.shouldContain("[Redirty Cards");
83 output.shouldContain("[Code Root Purge");
84 output.shouldContain("[String Dedup Fixup");
85 output.shouldContain("[Young Free CSet");
86 output.shouldContain("[Non-Young Free CSet");
88 // also check evacuation failure messages once
89 output.shouldNotContain("[Evacuation Failure");
90 output.shouldNotContain("[Recalculate Used");
91 output.shouldNotContain("[Remove Self Forwards");
92 output.shouldNotContain("[Restore RemSet");
93 output.shouldHaveExitValue(0);
94 }
96 private static void testWithToSpaceExhaustionLogs() throws Exception {
97 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
98 "-Xmx10M",
99 "-Xmn5M",
100 "-XX:+PrintGCDetails",
101 GCTestWithToSpaceExhaustion.class.getName());
103 OutputAnalyzer output = new OutputAnalyzer(pb.start());
104 output.shouldContain("[Evacuation Failure");
105 output.shouldNotContain("[Recalculate Used");
106 output.shouldNotContain("[Remove Self Forwards");
107 output.shouldNotContain("[Restore RemSet");
108 output.shouldHaveExitValue(0);
110 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
111 "-Xmx10M",
112 "-Xmn5M",
113 "-XX:+PrintGCDetails",
114 "-XX:+UnlockExperimentalVMOptions",
115 "-XX:G1LogLevel=finest",
116 GCTestWithToSpaceExhaustion.class.getName());
118 output = new OutputAnalyzer(pb.start());
119 output.shouldContain("[Evacuation Failure");
120 output.shouldContain("[Recalculate Used");
121 output.shouldContain("[Remove Self Forwards");
122 output.shouldContain("[Restore RemSet");
123 output.shouldHaveExitValue(0);
124 }
126 static class GCTest {
127 private static byte[] garbage;
128 public static void main(String [] args) {
129 System.out.println("Creating garbage");
130 // create 128MB of garbage. This should result in at least one GC
131 for (int i = 0; i < 1024; i++) {
132 garbage = new byte[128 * 1024];
133 }
134 System.out.println("Done");
135 }
136 }
138 static class GCTestWithToSpaceExhaustion {
139 private static byte[] garbage;
140 private static byte[] largeObject;
141 public static void main(String [] args) {
142 largeObject = new byte[5*1024*1024];
143 System.out.println("Creating garbage");
144 // create 128MB of garbage. This should result in at least one GC,
145 // some of them with to-space exhaustion.
146 for (int i = 0; i < 1024; i++) {
147 garbage = new byte[128 * 1024];
148 }
149 System.out.println("Done");
150 }
151 }
152 }
