Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java @ 12932:7fe6ef09d242
8025638: jmap returns 0 instead of 1 when it fails.
Summary: Re-factored some code handling return values and fails/errors during tool execution.
Reviewed-by: sla, kevinw
Contributed-by: fredrik.arvidsson@oracle.com
| author | farvidsson |
|---|---|
| date | Wed, 16 Oct 2013 09:20:23 +0200 |
| parents | 38ea2efa32a7 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 8750 | 2 * Copyright (c) 2003, 2013, 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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.tools; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.code.*; | |
| 30 import sun.jvm.hotspot.interpreter.*; | |
| 31 import sun.jvm.hotspot.debugger.*; | |
| 32 import sun.jvm.hotspot.debugger.cdbg.*; | |
| 33 import sun.jvm.hotspot.oops.*; | |
| 34 import sun.jvm.hotspot.runtime.*; | |
| 8750 | 35 import sun.jvm.hotspot.utilities.PlatformInfo; |
| 0 | 36 |
| 37 public class PStack extends Tool { | |
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38 // in non-verbose mode, Method*s are not printed in java frames |
| 0 | 39 public PStack(boolean v, boolean concurrentLocks) { |
| 40 this.verbose = v; | |
| 41 this.concurrentLocks = concurrentLocks; | |
| 42 } | |
| 43 | |
| 44 public PStack() { | |
| 45 this(true, true); | |
| 46 } | |
| 47 | |
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48 public PStack(JVMDebugger d) { |
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49 super(d); |
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50 } |
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51 |
| 0 | 52 public void run() { |
| 53 run(System.out); | |
| 54 } | |
| 55 | |
| 56 public void run(PrintStream out) { | |
| 57 Debugger dbg = getAgent().getDebugger(); | |
| 8103 | 58 run(out, dbg); |
| 0 | 59 } |
| 60 | |
| 61 public void run(PrintStream out, Debugger dbg) { | |
| 8750 | 62 if (PlatformInfo.getOS().equals("darwin")) { |
| 63 out.println("Not available on Darwin"); | |
| 64 return; | |
| 65 } | |
| 66 | |
| 0 | 67 CDebugger cdbg = dbg.getCDebugger(); |
| 68 if (cdbg != null) { | |
| 69 ConcurrentLocksPrinter concLocksPrinter = null; | |
| 8103 | 70 // compute and cache java Vframes. |
| 71 initJFrameCache(); | |
| 72 if (concurrentLocks) { | |
| 73 concLocksPrinter = new ConcurrentLocksPrinter(); | |
| 74 } | |
| 75 // print Java level deadlocks | |
| 76 try { | |
| 77 DeadlockDetector.print(out); | |
| 78 } catch (Exception exp) { | |
| 79 out.println("can't print deadlock information: " + exp.getMessage()); | |
| 0 | 80 } |
| 81 | |
| 82 List l = cdbg.getThreadList(); | |
| 83 final boolean cdbgCanDemangle = cdbg.canDemangle(); | |
| 84 for (Iterator itr = l.iterator() ; itr.hasNext();) { | |
| 85 ThreadProxy th = (ThreadProxy) itr.next(); | |
| 86 try { | |
| 87 CFrame f = cdbg.topFrameForThread(th); | |
| 88 out.print("----------------- "); | |
| 89 out.print(th); | |
| 90 out.println(" -----------------"); | |
| 91 while (f != null) { | |
| 92 ClosestSymbol sym = f.closestSymbolToPC(); | |
| 93 Address pc = f.pc(); | |
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94 out.print(pc + "\t"); |
| 0 | 95 if (sym != null) { |
| 96 String name = sym.getName(); | |
| 97 if (cdbgCanDemangle) { | |
| 98 name = cdbg.demangle(name); | |
| 99 } | |
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100 out.print(name); |
| 0 | 101 long diff = sym.getOffset(); |
| 102 if (diff != 0L) { | |
| 103 out.print(" + 0x" + Long.toHexString(diff)); | |
| 104 } | |
| 105 out.println(); | |
| 106 } else { | |
| 8103 | 107 // look for one or more java frames |
| 108 String[] names = null; | |
| 109 // check interpreter frame | |
| 110 Interpreter interp = VM.getVM().getInterpreter(); | |
| 111 if (interp.contains(pc)) { | |
| 112 names = getJavaNames(th, f.localVariableBase()); | |
| 113 // print codelet name if we can't determine method | |
| 114 if (names == null || names.length == 0) { | |
| 115 out.print("<interpreter> "); | |
| 116 InterpreterCodelet ic = interp.getCodeletContaining(pc); | |
| 117 if (ic != null) { | |
| 118 String desc = ic.getDescription(); | |
| 119 if (desc != null) out.print(desc); | |
| 120 } | |
| 121 out.println(); | |
| 122 } | |
| 123 } else { | |
| 124 // look for known code blobs | |
| 125 CodeCache c = VM.getVM().getCodeCache(); | |
| 126 if (c.contains(pc)) { | |
| 127 CodeBlob cb = c.findBlobUnsafe(pc); | |
| 128 if (cb.isNMethod()) { | |
| 129 names = getJavaNames(th, f.localVariableBase()); | |
| 130 // just print compiled code, if can't determine method | |
| 131 if (names == null || names.length == 0) { | |
| 132 out.println("<Unknown compiled code>"); | |
| 133 } | |
| 134 } else if (cb.isBufferBlob()) { | |
| 135 out.println("<StubRoutines>"); | |
| 136 } else if (cb.isRuntimeStub()) { | |
| 137 out.println("<RuntimeStub>"); | |
| 138 } else if (cb.isDeoptimizationStub()) { | |
| 139 out.println("<DeoptimizationStub>"); | |
| 140 } else if (cb.isUncommonTrapStub()) { | |
| 141 out.println("<UncommonTrap>"); | |
| 142 } else if (cb.isExceptionStub()) { | |
| 143 out.println("<ExceptionStub>"); | |
| 144 } else if (cb.isSafepointStub()) { | |
| 145 out.println("<SafepointStub>"); | |
| 146 } else { | |
| 147 out.println("<Unknown code blob>"); | |
| 148 } | |
| 149 } else { | |
| 150 printUnknown(out); | |
| 151 } | |
| 152 } | |
| 153 // print java frames, if any | |
| 154 if (names != null && names.length != 0) { | |
| 155 // print java frame(s) | |
| 156 for (int i = 0; i < names.length; i++) { | |
| 157 out.println(names[i]); | |
| 158 } | |
| 159 } | |
| 0 | 160 } |
| 6163 | 161 f = f.sender(th); |
| 0 | 162 } |
| 163 } catch (Exception exp) { | |
| 164 exp.printStackTrace(); | |
| 165 // continue, may be we can do a better job for other threads | |
| 166 } | |
| 8103 | 167 if (concurrentLocks) { |
| 0 | 168 JavaThread jthread = (JavaThread) proxyToThread.get(th); |
| 169 if (jthread != null) { | |
| 170 concLocksPrinter.print(jthread, out); | |
| 171 } | |
| 172 } | |
| 173 } // for threads | |
| 174 } else { | |
| 175 if (getDebugeeType() == DEBUGEE_REMOTE) { | |
| 176 out.println("remote configuration is not yet implemented"); | |
| 177 } else { | |
| 178 out.println("not yet implemented (debugger does not support CDebugger)!"); | |
| 179 } | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 public static void main(String[] args) throws Exception { | |
| 184 PStack t = new PStack(); | |
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185 t.execute(args); |
| 0 | 186 } |
| 187 | |
| 188 // -- Internals only below this point | |
| 189 private Map jframeCache; // Map<ThreadProxy, JavaVFrame[]> | |
| 190 private Map proxyToThread; // Map<ThreadProxy, JavaThread> | |
| 191 private PrintStream out; | |
| 192 private boolean verbose; | |
| 193 private boolean concurrentLocks; | |
| 194 | |
| 195 private void initJFrameCache() { | |
| 196 // cache frames for subsequent reference | |
| 197 jframeCache = new HashMap(); | |
| 198 proxyToThread = new HashMap(); | |
| 199 Threads threads = VM.getVM().getThreads(); | |
| 200 for (JavaThread cur = threads.first(); cur != null; cur = cur.next()) { | |
| 201 List tmp = new ArrayList(10); | |
| 202 try { | |
| 203 for (JavaVFrame vf = cur.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) { | |
| 204 tmp.add(vf); | |
| 205 } | |
| 206 } catch (Exception exp) { | |
| 207 // may be we may get frames for other threads, continue | |
| 208 // after printing stack trace. | |
| 209 exp.printStackTrace(); | |
| 210 } | |
| 211 JavaVFrame[] jvframes = new JavaVFrame[tmp.size()]; | |
| 212 System.arraycopy(tmp.toArray(), 0, jvframes, 0, jvframes.length); | |
| 213 jframeCache.put(cur.getThreadProxy(), jvframes); | |
| 214 proxyToThread.put(cur.getThreadProxy(), cur); | |
| 215 } | |
| 216 } | |
| 217 | |
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218 private void printUnknown(PrintStream out) { |
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219 out.println("\t????????"); |
| 0 | 220 } |
| 221 | |
| 222 private String[] getJavaNames(ThreadProxy th, Address fp) { | |
| 223 if (fp == null) { | |
| 224 return null; | |
| 225 } | |
| 226 JavaVFrame[] jvframes = (JavaVFrame[]) jframeCache.get(th); | |
| 227 if (jvframes == null) return null; // not a java thread | |
| 228 List names = new ArrayList(10); | |
| 229 for (int fCount = 0; fCount < jvframes.length; fCount++) { | |
| 230 JavaVFrame vf = jvframes[fCount]; | |
| 231 Frame f = vf.getFrame(); | |
| 232 if (fp.equals(f.getFP())) { | |
| 233 StringBuffer sb = new StringBuffer(); | |
| 234 Method method = vf.getMethod(); | |
| 235 // a special char to identify java frames in output | |
| 236 sb.append("* "); | |
| 237 sb.append(method.externalNameAndSignature()); | |
| 238 sb.append(" bci:" + vf.getBCI()); | |
| 239 int lineNumber = method.getLineNumberFromBCI(vf.getBCI()); | |
| 240 if (lineNumber != -1) { | |
| 241 sb.append(" line:" + lineNumber); | |
| 242 } | |
| 243 | |
| 244 if (verbose) { | |
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245 sb.append(" Method*:" + method.getAddress()); |
| 0 | 246 } |
| 247 | |
| 248 if (vf.isCompiledFrame()) { | |
| 249 sb.append(" (Compiled frame"); | |
| 250 if (vf.isDeoptimized()) { | |
| 251 sb.append(" [deoptimized]"); | |
| 252 } | |
| 253 } else if (vf.isInterpretedFrame()) { | |
| 254 sb.append(" (Interpreted frame"); | |
| 255 } | |
| 256 if (vf.mayBeImpreciseDbg()) { | |
| 257 sb.append("; information may be imprecise"); | |
| 258 } | |
| 259 sb.append(")"); | |
| 260 names.add(sb.toString()); | |
| 261 } | |
| 262 } | |
| 263 String[] res = new String[names.size()]; | |
| 264 System.arraycopy(names.toArray(), 0, res, 0, res.length); | |
| 265 return res; | |
| 266 } | |
| 267 } |