Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/tools/JMap.java @ 6972:bd7a7ce2e264
6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Mon, 12 Nov 2012 14:03:53 -0800 |
| parents | c18cbe5936b8 |
| children | b685ca4f4fb9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2004, 2007, 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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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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parents:
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20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.tools; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import sun.jvm.hotspot.utilities.*; | |
| 29 | |
| 30 public class JMap extends Tool { | |
| 31 public JMap(int m) { | |
| 32 mode = m; | |
| 33 } | |
| 34 | |
| 35 public JMap() { | |
| 36 this(MODE_PMAP); | |
| 37 } | |
| 38 | |
| 39 protected boolean needsJavaPrefix() { | |
| 40 return false; | |
| 41 } | |
| 42 | |
| 43 public String getName() { | |
| 44 return "jmap"; | |
| 45 } | |
| 46 | |
| 47 protected String getCommandFlags() { | |
| 48 return "-heap|-heap:format=b|-histo|-permstat|-finalizerinfo"; | |
| 49 } | |
| 50 | |
| 51 protected void printFlagsUsage() { | |
| 52 System.out.println(" <no option>\tto print same info as Solaris pmap"); | |
| 53 System.out.println(" -heap\tto print java heap summary"); | |
| 54 System.out.println(" -heap:format=b\tto dump java heap in hprof binary format"); | |
| 55 System.out.println(" -histo\tto print histogram of java object heap"); | |
| 56 System.out.println(" -permstat\tto print permanent generation statistics"); | |
| 57 System.out.println(" -finalizerinfo\tto print information on objects awaiting finalization"); | |
| 58 super.printFlagsUsage(); | |
| 59 } | |
| 60 | |
| 61 public static final int MODE_HEAP_SUMMARY = 0; | |
| 62 public static final int MODE_HISTOGRAM = 1; | |
| 63 public static final int MODE_PERMSTAT = 2; | |
| 64 public static final int MODE_PMAP = 3; | |
| 65 public static final int MODE_HEAP_GRAPH_HPROF_BIN = 4; | |
| 66 public static final int MODE_HEAP_GRAPH_GXL = 5; | |
| 67 public static final int MODE_FINALIZERINFO = 6; | |
| 68 | |
| 69 public void run() { | |
| 70 Tool tool = null; | |
| 71 switch (mode) { | |
| 72 | |
| 73 case MODE_HEAP_SUMMARY: | |
| 74 tool = new HeapSummary(); | |
| 75 break; | |
| 76 | |
| 77 case MODE_HISTOGRAM: | |
| 78 tool = new ObjectHistogram(); | |
| 79 break; | |
| 80 | |
| 81 case MODE_PERMSTAT: | |
| 82 tool = new PermStat(); | |
| 83 break; | |
| 84 | |
| 85 case MODE_PMAP: | |
| 86 tool = new PMap(); | |
| 87 break; | |
| 88 | |
| 89 case MODE_HEAP_GRAPH_HPROF_BIN: | |
| 90 writeHeapHprofBin(); | |
| 91 return; | |
| 92 | |
| 93 case MODE_HEAP_GRAPH_GXL: | |
| 94 writeHeapGXL(); | |
| 95 return; | |
| 96 | |
| 97 case MODE_FINALIZERINFO: | |
| 98 tool = new FinalizerInfo(); | |
| 99 break; | |
| 100 | |
| 101 default: | |
| 102 usage(); | |
| 103 break; | |
| 104 } | |
| 105 | |
| 106 tool.setAgent(getAgent()); | |
| 107 tool.setDebugeeType(getDebugeeType()); | |
| 108 tool.run(); | |
| 109 } | |
| 110 | |
| 111 public static void main(String[] args) { | |
| 112 int mode = MODE_PMAP; | |
| 113 if (args.length > 1 ) { | |
| 114 String modeFlag = args[0]; | |
| 115 boolean copyArgs = true; | |
| 116 if (modeFlag.equals("-heap")) { | |
| 117 mode = MODE_HEAP_SUMMARY; | |
| 118 } else if (modeFlag.equals("-histo")) { | |
| 119 mode = MODE_HISTOGRAM; | |
| 120 } else if (modeFlag.equals("-permstat")) { | |
| 121 mode = MODE_PERMSTAT; | |
| 122 } else if (modeFlag.equals("-finalizerinfo")) { | |
| 123 mode = MODE_FINALIZERINFO; | |
| 124 } else { | |
| 125 int index = modeFlag.indexOf("-heap:format="); | |
| 126 if (index != -1) { | |
| 127 String format = modeFlag.substring(1 + modeFlag.indexOf('=')); | |
| 128 if (format.equals("b")) { | |
| 129 mode = MODE_HEAP_GRAPH_HPROF_BIN; | |
| 130 } else if (format.equals("x")) { | |
| 131 mode = MODE_HEAP_GRAPH_GXL; | |
| 132 } else { | |
| 133 System.err.println("unknown heap format:" + format); | |
| 134 return; | |
| 135 } | |
| 136 } else { | |
| 137 copyArgs = false; | |
| 138 } | |
| 139 } | |
| 140 | |
| 141 if (copyArgs) { | |
| 142 String[] newArgs = new String[args.length - 1]; | |
| 143 for (int i = 0; i < newArgs.length; i++) { | |
| 144 newArgs[i] = args[i + 1]; | |
| 145 } | |
| 146 args = newArgs; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 JMap jmap = new JMap(mode); | |
| 151 jmap.start(args); | |
| 152 jmap.stop(); | |
| 153 } | |
| 154 | |
| 155 public boolean writeHeapHprofBin(String fileName) { | |
| 156 try { | |
| 157 HeapGraphWriter hgw = new HeapHprofBinWriter(); | |
| 158 hgw.write(fileName); | |
| 159 System.out.println("heap written to " + fileName); | |
| 160 return true; | |
| 161 } catch (IOException exp) { | |
| 162 System.err.println(exp.getMessage()); | |
| 163 return false; | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 public boolean writeHeapHprofBin() { | |
| 168 return writeHeapHprofBin("heap.bin"); | |
| 169 } | |
| 170 | |
| 171 private boolean writeHeapGXL(String fileName) { | |
| 172 try { | |
| 173 HeapGraphWriter hgw = new HeapGXLWriter(); | |
| 174 hgw.write(fileName); | |
| 175 System.out.println("heap written to " + fileName); | |
| 176 return true; | |
| 177 } catch (IOException exp) { | |
| 178 System.err.println(exp.getMessage()); | |
| 179 return false; | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 public boolean writeHeapGXL() { | |
| 184 return writeHeapGXL("heap.xml"); | |
| 185 } | |
| 186 | |
| 187 private int mode; | |
| 188 } |