Mercurial > hg > truffle
annotate agent/test/jdi/SASanityChecker.java @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
| author | tschatzl |
|---|---|
| date | Fri, 10 Oct 2014 15:51:58 +0200 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 import sun.jvm.hotspot.tools.*; | |
| 26 import sun.jvm.hotspot.runtime.*; | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import java.util.jar.*; | |
| 30 | |
| 31 /** | |
| 32 This is a sanity checking tool for Serviceability Agent. To use this class, | |
| 33 refer to sasanity.sh script in the current directory. | |
| 34 */ | |
| 35 | |
| 36 public class SASanityChecker extends Tool { | |
| 37 private static final String saJarName; | |
| 38 private static final Map c2types; | |
| 39 | |
| 40 static { | |
| 41 saJarName = System.getProperty("SASanityChecker.SAJarName", "sa-jdi.jar"); | |
| 42 c2types = new HashMap(); | |
| 43 Object value = new Object(); | |
| 44 c2types.put("sun.jvm.hotspot.code.ExceptionBlob", value); | |
| 45 c2types.put("sun.jvm.hotspot.code.DeoptimizationBlob", value); | |
| 46 c2types.put("sun.jvm.hotspot.code.UncommonTrapBlob", value); | |
| 47 | |
| 48 } | |
| 49 | |
| 50 public void run() { | |
| 51 String classPath = System.getProperty("java.class.path"); | |
| 52 StringTokenizer st = new StringTokenizer(classPath, File.pathSeparator); | |
| 53 String saJarPath = null; | |
| 54 while (st.hasMoreTokens()) { | |
| 55 saJarPath = st.nextToken(); | |
| 56 if (saJarPath.endsWith(saJarName)) { | |
| 57 break; | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 if (saJarPath == null) { | |
| 62 throw new RuntimeException(saJarName + " is not the CLASSPATH"); | |
| 63 } | |
| 64 | |
| 65 String cpuDot = "." + VM.getVM().getCPU() + "."; | |
| 66 String platformDot = "." + VM.getVM().getOS() + "_" + VM.getVM().getCPU() + "."; | |
| 67 boolean isClient = VM.getVM().isClientCompiler(); | |
| 68 | |
| 69 try { | |
| 70 FileInputStream fis = new FileInputStream(saJarPath); | |
| 71 JarInputStream jis = new JarInputStream(fis); | |
| 72 JarEntry je = null; | |
| 73 while ( (je = jis.getNextJarEntry()) != null) { | |
| 74 String entryName = je.getName(); | |
| 75 int dotClassIndex = entryName.indexOf(".class"); | |
| 76 if (dotClassIndex == -1) { | |
| 77 // skip non-.class stuff | |
| 78 continue; | |
| 79 } | |
| 80 | |
| 81 entryName = entryName.substring(0, dotClassIndex).replace('/', '.'); | |
| 82 | |
| 83 // skip debugger, asm classes, type classes and jdi binding classes | |
| 84 if (entryName.startsWith("sun.jvm.hotspot.debugger.") || | |
| 85 entryName.startsWith("sun.jvm.hotspot.asm.") || | |
| 86 entryName.startsWith("sun.jvm.hotspot.type.") || | |
| 87 entryName.startsWith("sun.jvm.hotspot.jdi.") ) { | |
| 88 continue; | |
| 89 } | |
| 90 | |
| 91 String runtimePkgPrefix = "sun.jvm.hotspot.runtime."; | |
| 92 int runtimeIndex = entryName.indexOf(runtimePkgPrefix); | |
| 93 if (runtimeIndex != -1) { | |
| 94 // look for further dot. if there, it has to be sub-package. | |
| 95 // in runtime sub-packages include only current platform classes. | |
| 96 if (entryName.substring(runtimePkgPrefix.length() + 1, entryName.length()).indexOf('.') != -1) { | |
| 97 if (entryName.indexOf(cpuDot) == -1 && | |
| 98 entryName.indexOf(platformDot) == -1) { | |
| 99 continue; | |
| 100 } | |
| 101 } | |
| 102 } | |
| 103 | |
| 104 if (isClient) { | |
| 105 if (c2types.get(entryName) != null) { | |
| 106 continue; | |
| 107 } | |
| 108 } else { | |
| 109 if (entryName.equals("sun.jvm.hotspot.c1.Runtime1")) { | |
| 110 continue; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 System.out.println("checking " + entryName + " .."); | |
| 115 // force init of the class to uncover any vmStructs mismatch | |
| 116 Class.forName(entryName); | |
| 117 } | |
| 118 } catch (Exception exp) { | |
| 119 System.out.println(); | |
| 120 System.out.println("FAILED"); | |
| 121 System.out.println(); | |
| 122 throw new RuntimeException(exp.getMessage()); | |
| 123 } | |
| 124 System.out.println(); | |
| 125 System.out.println("PASSED"); | |
| 126 System.out.println(); | |
| 127 } | |
| 128 | |
| 129 public static void main(String[] args) { | |
| 130 SASanityChecker checker = new SASanityChecker(); | |
| 131 checker.start(args); | |
| 132 checker.stop(); | |
| 133 } | |
| 134 } |