Tue, 18 Mar 2014 19:07:22 +0100
8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp
tschatzl@6402 | 1 | /* |
tschatzl@6402 | 2 | * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
tschatzl@6402 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
tschatzl@6402 | 4 | * |
tschatzl@6402 | 5 | * This code is free software; you can redistribute it and/or modify it |
tschatzl@6402 | 6 | * under the terms of the GNU General Public License version 2 only, as |
tschatzl@6402 | 7 | * published by the Free Software Foundation. |
tschatzl@6402 | 8 | * |
tschatzl@6402 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
tschatzl@6402 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
tschatzl@6402 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
tschatzl@6402 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
tschatzl@6402 | 13 | * accompanied this code). |
tschatzl@6402 | 14 | * |
tschatzl@6402 | 15 | * You should have received a copy of the GNU General Public License version |
tschatzl@6402 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
tschatzl@6402 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
tschatzl@6402 | 18 | * |
tschatzl@6402 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
tschatzl@6402 | 20 | * or visit www.oracle.com if you need additional information or have any |
tschatzl@6402 | 21 | * questions. |
tschatzl@6402 | 22 | */ |
tschatzl@6402 | 23 | |
tschatzl@6402 | 24 | /* |
tschatzl@6402 | 25 | * @test TestPrintGCDetails |
tschatzl@6405 | 26 | * @bug 8035406 8027295 8035398 |
tschatzl@6402 | 27 | * @summary Ensure that the PrintGCDetails output for a minor GC with G1 |
tschatzl@6402 | 28 | * includes the expected necessary messages. |
tschatzl@6402 | 29 | * @key gc |
tschatzl@6402 | 30 | * @library /testlibrary |
tschatzl@6402 | 31 | */ |
tschatzl@6402 | 32 | |
tschatzl@6402 | 33 | import com.oracle.java.testlibrary.ProcessTools; |
tschatzl@6402 | 34 | import com.oracle.java.testlibrary.OutputAnalyzer; |
tschatzl@6402 | 35 | |
tschatzl@6402 | 36 | public class TestGCLogMessages { |
tschatzl@6402 | 37 | public static void main(String[] args) throws Exception { |
tschatzl@6406 | 38 | testNormalLogs(); |
tschatzl@6406 | 39 | testWithToSpaceExhaustionLogs(); |
tschatzl@6406 | 40 | } |
tschatzl@6406 | 41 | |
tschatzl@6406 | 42 | private static void testNormalLogs() throws Exception { |
tschatzl@6402 | 43 | |
tschatzl@6402 | 44 | ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", |
tschatzl@6402 | 45 | "-Xmx10M", |
tschatzl@6402 | 46 | GCTest.class.getName()); |
tschatzl@6402 | 47 | |
tschatzl@6402 | 48 | OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
tschatzl@6402 | 49 | |
tschatzl@6405 | 50 | output.shouldNotContain("[Redirty Cards"); |
tschatzl@6404 | 51 | output.shouldNotContain("[Code Root Purge"); |
pliden@6413 | 52 | output.shouldNotContain("[String Dedup Fixup"); |
tschatzl@6404 | 53 | output.shouldNotContain("[Young Free CSet"); |
tschatzl@6404 | 54 | output.shouldNotContain("[Non-Young Free CSet"); |
tschatzl@6404 | 55 | output.shouldHaveExitValue(0); |
tschatzl@6404 | 56 | |
tschatzl@6404 | 57 | pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", |
pliden@6413 | 58 | "-XX:+UseStringDeduplication", |
tschatzl@6404 | 59 | "-Xmx10M", |
tschatzl@6404 | 60 | "-XX:+PrintGCDetails", |
tschatzl@6404 | 61 | GCTest.class.getName()); |
tschatzl@6404 | 62 | |
tschatzl@6404 | 63 | output = new OutputAnalyzer(pb.start()); |
tschatzl@6404 | 64 | |
tschatzl@6405 | 65 | output.shouldContain("[Redirty Cards"); |
tschatzl@6402 | 66 | output.shouldContain("[Code Root Purge"); |
pliden@6413 | 67 | output.shouldContain("[String Dedup Fixup"); |
tschatzl@6404 | 68 | output.shouldNotContain("[Young Free CSet"); |
tschatzl@6404 | 69 | output.shouldNotContain("[Non-Young Free CSet"); |
tschatzl@6402 | 70 | output.shouldHaveExitValue(0); |
tschatzl@6404 | 71 | |
tschatzl@6404 | 72 | pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", |
pliden@6413 | 73 | "-XX:+UseStringDeduplication", |
tschatzl@6404 | 74 | "-Xmx10M", |
tschatzl@6404 | 75 | "-XX:+PrintGCDetails", |
tschatzl@6404 | 76 | "-XX:+UnlockExperimentalVMOptions", |
tschatzl@6404 | 77 | "-XX:G1LogLevel=finest", |
tschatzl@6404 | 78 | GCTest.class.getName()); |
tschatzl@6404 | 79 | |
tschatzl@6404 | 80 | output = new OutputAnalyzer(pb.start()); |
tschatzl@6404 | 81 | |
tschatzl@6405 | 82 | output.shouldContain("[Redirty Cards"); |
tschatzl@6404 | 83 | output.shouldContain("[Code Root Purge"); |
pliden@6413 | 84 | output.shouldContain("[String Dedup Fixup"); |
tschatzl@6404 | 85 | output.shouldContain("[Young Free CSet"); |
tschatzl@6404 | 86 | output.shouldContain("[Non-Young Free CSet"); |
tschatzl@6406 | 87 | |
tschatzl@6406 | 88 | // also check evacuation failure messages once |
tschatzl@6406 | 89 | output.shouldNotContain("[Evacuation Failure"); |
tschatzl@6406 | 90 | output.shouldNotContain("[Recalculate Used"); |
tschatzl@6406 | 91 | output.shouldNotContain("[Remove Self Forwards"); |
tschatzl@6406 | 92 | output.shouldNotContain("[Restore RemSet"); |
tschatzl@6406 | 93 | output.shouldHaveExitValue(0); |
tschatzl@6406 | 94 | } |
tschatzl@6406 | 95 | |
tschatzl@6406 | 96 | private static void testWithToSpaceExhaustionLogs() throws Exception { |
tschatzl@6406 | 97 | ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", |
tschatzl@6406 | 98 | "-Xmx10M", |
tschatzl@6406 | 99 | "-Xmn5M", |
tschatzl@6406 | 100 | "-XX:+PrintGCDetails", |
tschatzl@6406 | 101 | GCTestWithToSpaceExhaustion.class.getName()); |
tschatzl@6406 | 102 | |
tschatzl@6406 | 103 | OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
tschatzl@6406 | 104 | output.shouldContain("[Evacuation Failure"); |
tschatzl@6406 | 105 | output.shouldNotContain("[Recalculate Used"); |
tschatzl@6406 | 106 | output.shouldNotContain("[Remove Self Forwards"); |
tschatzl@6406 | 107 | output.shouldNotContain("[Restore RemSet"); |
tschatzl@6404 | 108 | output.shouldHaveExitValue(0); |
tschatzl@6404 | 109 | |
tschatzl@6406 | 110 | pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", |
tschatzl@6406 | 111 | "-Xmx10M", |
tschatzl@6406 | 112 | "-Xmn5M", |
tschatzl@6406 | 113 | "-XX:+PrintGCDetails", |
tschatzl@6406 | 114 | "-XX:+UnlockExperimentalVMOptions", |
tschatzl@6406 | 115 | "-XX:G1LogLevel=finest", |
tschatzl@6406 | 116 | GCTestWithToSpaceExhaustion.class.getName()); |
tschatzl@6406 | 117 | |
tschatzl@6406 | 118 | output = new OutputAnalyzer(pb.start()); |
tschatzl@6406 | 119 | output.shouldContain("[Evacuation Failure"); |
tschatzl@6406 | 120 | output.shouldContain("[Recalculate Used"); |
tschatzl@6406 | 121 | output.shouldContain("[Remove Self Forwards"); |
tschatzl@6406 | 122 | output.shouldContain("[Restore RemSet"); |
tschatzl@6406 | 123 | output.shouldHaveExitValue(0); |
tschatzl@6402 | 124 | } |
tschatzl@6402 | 125 | |
tschatzl@6402 | 126 | static class GCTest { |
tschatzl@6402 | 127 | private static byte[] garbage; |
tschatzl@6402 | 128 | public static void main(String [] args) { |
tschatzl@6402 | 129 | System.out.println("Creating garbage"); |
tschatzl@6402 | 130 | // create 128MB of garbage. This should result in at least one GC |
tschatzl@6402 | 131 | for (int i = 0; i < 1024; i++) { |
tschatzl@6402 | 132 | garbage = new byte[128 * 1024]; |
tschatzl@6402 | 133 | } |
tschatzl@6402 | 134 | System.out.println("Done"); |
tschatzl@6402 | 135 | } |
tschatzl@6402 | 136 | } |
tschatzl@6406 | 137 | |
tschatzl@6406 | 138 | static class GCTestWithToSpaceExhaustion { |
tschatzl@6406 | 139 | private static byte[] garbage; |
tschatzl@6406 | 140 | private static byte[] largeObject; |
tschatzl@6406 | 141 | public static void main(String [] args) { |
tschatzl@6406 | 142 | largeObject = new byte[5*1024*1024]; |
tschatzl@6406 | 143 | System.out.println("Creating garbage"); |
tschatzl@6406 | 144 | // create 128MB of garbage. This should result in at least one GC, |
tschatzl@6406 | 145 | // some of them with to-space exhaustion. |
tschatzl@6406 | 146 | for (int i = 0; i < 1024; i++) { |
tschatzl@6406 | 147 | garbage = new byte[128 * 1024]; |
tschatzl@6406 | 148 | } |
tschatzl@6406 | 149 | System.out.println("Done"); |
tschatzl@6406 | 150 | } |
tschatzl@6406 | 151 | } |
tschatzl@6402 | 152 | } |