Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | b87e5a681416 |
| children | 5ed317b25e23 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 6163 | 2 * Copyright (c) 2003, 2012, 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.*; | |
| 35 | |
| 36 public class PStack extends Tool { | |
|
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37 // in non-verbose mode, Method*s are not printed in java frames |
| 0 | 38 public PStack(boolean v, boolean concurrentLocks) { |
| 39 this.verbose = v; | |
| 40 this.concurrentLocks = concurrentLocks; | |
| 41 } | |
| 42 | |
| 43 public PStack() { | |
| 44 this(true, true); | |
| 45 } | |
| 46 | |
| 47 public void run() { | |
| 48 run(System.out); | |
| 49 } | |
| 50 | |
| 51 public void run(PrintStream out) { | |
| 52 Debugger dbg = getAgent().getDebugger(); | |
| 53 run(out, dbg, getAgent().isJavaMode()); | |
| 54 } | |
| 55 | |
| 56 public void run(PrintStream out, Debugger dbg) { | |
| 57 run(out, dbg, true); | |
| 58 } | |
| 59 | |
| 60 private void run(PrintStream out, Debugger dbg, final boolean isJava) { | |
| 61 CDebugger cdbg = dbg.getCDebugger(); | |
| 62 if (cdbg != null) { | |
| 63 ConcurrentLocksPrinter concLocksPrinter = null; | |
| 64 if (isJava) { | |
| 65 // compute and cache java Vframes. | |
| 66 initJFrameCache(); | |
| 67 if (concurrentLocks) { | |
| 68 concLocksPrinter = new ConcurrentLocksPrinter(); | |
| 69 } | |
| 70 // print Java level deadlocks | |
| 71 try { | |
| 72 DeadlockDetector.print(out); | |
| 73 } catch (Exception exp) { | |
| 74 out.println("can't print deadlock information: " + exp.getMessage()); | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 List l = cdbg.getThreadList(); | |
| 79 final boolean cdbgCanDemangle = cdbg.canDemangle(); | |
| 80 for (Iterator itr = l.iterator() ; itr.hasNext();) { | |
| 81 ThreadProxy th = (ThreadProxy) itr.next(); | |
| 82 try { | |
| 83 CFrame f = cdbg.topFrameForThread(th); | |
| 84 out.print("----------------- "); | |
| 85 out.print(th); | |
| 86 out.println(" -----------------"); | |
| 87 while (f != null) { | |
| 88 ClosestSymbol sym = f.closestSymbolToPC(); | |
| 89 Address pc = f.pc(); | |
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90 out.print(pc + "\t"); |
| 0 | 91 if (sym != null) { |
| 92 String name = sym.getName(); | |
| 93 if (cdbgCanDemangle) { | |
| 94 name = cdbg.demangle(name); | |
| 95 } | |
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96 out.print(name); |
| 0 | 97 long diff = sym.getOffset(); |
| 98 if (diff != 0L) { | |
| 99 out.print(" + 0x" + Long.toHexString(diff)); | |
| 100 } | |
| 101 out.println(); | |
| 102 } else { | |
| 103 if (isJava) { | |
| 104 // look for one or more java frames | |
| 105 String[] names = null; | |
| 106 // check interpreter frame | |
| 107 Interpreter interp = VM.getVM().getInterpreter(); | |
| 108 if (interp.contains(pc)) { | |
| 109 names = getJavaNames(th, f.localVariableBase()); | |
| 110 // print codelet name if we can't determine method | |
| 111 if (names == null || names.length == 0) { | |
| 112 out.print("<interpreter> "); | |
| 113 InterpreterCodelet ic = interp.getCodeletContaining(pc); | |
| 114 if (ic != null) { | |
| 115 String desc = ic.getDescription(); | |
| 116 if (desc != null) out.print(desc); | |
| 117 } | |
| 118 out.println(); | |
| 119 } | |
| 120 } else { | |
| 121 // look for known code blobs | |
| 122 CodeCache c = VM.getVM().getCodeCache(); | |
| 123 if (c.contains(pc)) { | |
| 124 CodeBlob cb = c.findBlobUnsafe(pc); | |
| 125 if (cb.isNMethod()) { | |
| 126 names = getJavaNames(th, f.localVariableBase()); | |
| 127 // just print compiled code, if can't determine method | |
| 128 if (names == null || names.length == 0) { | |
| 129 out.println("<Unknown compiled code>"); | |
| 130 } | |
| 131 } else if (cb.isBufferBlob()) { | |
| 132 out.println("<StubRoutines>"); | |
| 133 } else if (cb.isRuntimeStub()) { | |
| 134 out.println("<RuntimeStub>"); | |
| 135 } else if (cb.isDeoptimizationStub()) { | |
| 136 out.println("<DeoptimizationStub>"); | |
| 137 } else if (cb.isUncommonTrapStub()) { | |
| 138 out.println("<UncommonTrap>"); | |
| 139 } else if (cb.isExceptionStub()) { | |
| 140 out.println("<ExceptionStub>"); | |
| 141 } else if (cb.isSafepointStub()) { | |
| 142 out.println("<SafepointStub>"); | |
| 143 } else { | |
| 144 out.println("<Unknown code blob>"); | |
| 145 } | |
| 146 } else { | |
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147 printUnknown(out); |
| 0 | 148 } |
| 149 } | |
| 150 // print java frames, if any | |
| 151 if (names != null && names.length != 0) { | |
| 152 // print java frame(s) | |
| 153 for (int i = 0; i < names.length; i++) { | |
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154 out.println(names[i]); |
| 0 | 155 } |
| 156 } | |
| 157 } else { | |
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158 printUnknown(out); |
| 0 | 159 } |
| 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 } | |
| 167 if (isJava && concurrentLocks) { | |
| 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 protected boolean requiresVM() { | |
| 184 return false; | |
| 185 } | |
| 186 | |
| 187 public static void main(String[] args) throws Exception { | |
| 188 PStack t = new PStack(); | |
| 189 t.start(args); | |
| 190 t.stop(); | |
| 191 } | |
| 192 | |
| 193 // -- Internals only below this point | |
| 194 private Map jframeCache; // Map<ThreadProxy, JavaVFrame[]> | |
| 195 private Map proxyToThread; // Map<ThreadProxy, JavaThread> | |
| 196 private PrintStream out; | |
| 197 private boolean verbose; | |
| 198 private boolean concurrentLocks; | |
| 199 | |
| 200 private void initJFrameCache() { | |
| 201 // cache frames for subsequent reference | |
| 202 jframeCache = new HashMap(); | |
| 203 proxyToThread = new HashMap(); | |
| 204 Threads threads = VM.getVM().getThreads(); | |
| 205 for (JavaThread cur = threads.first(); cur != null; cur = cur.next()) { | |
| 206 List tmp = new ArrayList(10); | |
| 207 try { | |
| 208 for (JavaVFrame vf = cur.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) { | |
| 209 tmp.add(vf); | |
| 210 } | |
| 211 } catch (Exception exp) { | |
| 212 // may be we may get frames for other threads, continue | |
| 213 // after printing stack trace. | |
| 214 exp.printStackTrace(); | |
| 215 } | |
| 216 JavaVFrame[] jvframes = new JavaVFrame[tmp.size()]; | |
| 217 System.arraycopy(tmp.toArray(), 0, jvframes, 0, jvframes.length); | |
| 218 jframeCache.put(cur.getThreadProxy(), jvframes); | |
| 219 proxyToThread.put(cur.getThreadProxy(), cur); | |
| 220 } | |
| 221 } | |
| 222 | |
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223 private void printUnknown(PrintStream out) { |
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224 out.println("\t????????"); |
| 0 | 225 } |
| 226 | |
| 227 private String[] getJavaNames(ThreadProxy th, Address fp) { | |
| 228 if (fp == null) { | |
| 229 return null; | |
| 230 } | |
| 231 JavaVFrame[] jvframes = (JavaVFrame[]) jframeCache.get(th); | |
| 232 if (jvframes == null) return null; // not a java thread | |
| 233 List names = new ArrayList(10); | |
| 234 for (int fCount = 0; fCount < jvframes.length; fCount++) { | |
| 235 JavaVFrame vf = jvframes[fCount]; | |
| 236 Frame f = vf.getFrame(); | |
| 237 if (fp.equals(f.getFP())) { | |
| 238 StringBuffer sb = new StringBuffer(); | |
| 239 Method method = vf.getMethod(); | |
| 240 // a special char to identify java frames in output | |
| 241 sb.append("* "); | |
| 242 sb.append(method.externalNameAndSignature()); | |
| 243 sb.append(" bci:" + vf.getBCI()); | |
| 244 int lineNumber = method.getLineNumberFromBCI(vf.getBCI()); | |
| 245 if (lineNumber != -1) { | |
| 246 sb.append(" line:" + lineNumber); | |
| 247 } | |
| 248 | |
| 249 if (verbose) { | |
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250 sb.append(" Method*:" + method.getAddress()); |
| 0 | 251 } |
| 252 | |
| 253 if (vf.isCompiledFrame()) { | |
| 254 sb.append(" (Compiled frame"); | |
| 255 if (vf.isDeoptimized()) { | |
| 256 sb.append(" [deoptimized]"); | |
| 257 } | |
| 258 } else if (vf.isInterpretedFrame()) { | |
| 259 sb.append(" (Interpreted frame"); | |
| 260 } | |
| 261 if (vf.mayBeImpreciseDbg()) { | |
| 262 sb.append("; information may be imprecise"); | |
| 263 } | |
| 264 sb.append(")"); | |
| 265 names.add(sb.toString()); | |
| 266 } | |
| 267 } | |
| 268 String[] res = new String[names.size()]; | |
| 269 System.arraycopy(names.toArray(), 0, res, 0, res.length); | |
| 270 return res; | |
| 271 } | |
| 272 } |