Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdDebuggerLocal.java @ 8750:39432a1cefdd
8003348: SA can not read core file on OS
Summary: Macosx uses Mach-O file format for binary files, not ELF format. Currently SA works on core files on other platforms, t his change enables SA work on core file generated on Darwin.
Reviewed-by: sla, sspitsyn
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Thu, 14 Mar 2013 00:33:08 -0700 |
| parents | 758935f7c23f |
| children | f6a055fcf47d |
| rev | line source |
|---|---|
| 3960 | 1 /* |
| 8750 | 2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| 3960 | 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.debugger.bsd; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.net.*; | |
| 29 import java.util.*; | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.debugger.x86.*; | |
| 32 import sun.jvm.hotspot.debugger.cdbg.*; | |
| 33 import sun.jvm.hotspot.utilities.*; | |
| 8750 | 34 import sun.jvm.hotspot.runtime.VM; |
| 35 import sun.jvm.hotspot.runtime.Threads; | |
| 36 import sun.jvm.hotspot.runtime.JavaThread; | |
| 3960 | 37 import java.lang.reflect.*; |
| 38 | |
| 39 /** <P> An implementation of the JVMDebugger interface. The basic debug | |
| 40 facilities are implemented through ptrace interface in the JNI code | |
| 41 (libsaproc.so). Library maps and symbol table management are done in | |
| 42 JNI. </P> | |
| 43 | |
| 44 <P> <B>NOTE</B> that since we have the notion of fetching "Java | |
| 45 primitive types" from the remote process (which might have | |
| 46 different sizes than we expect) we have a bootstrapping | |
| 47 problem. We need to know the sizes of these types before we can | |
| 48 fetch them. The current implementation solves this problem by | |
| 49 requiring that it be configured with these type sizes before they | |
| 50 can be fetched. The readJ(Type) routines here will throw a | |
| 51 RuntimeException if they are called before the debugger is | |
| 52 configured with the Java primitive type sizes. </P> */ | |
| 53 | |
| 54 public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger { | |
| 55 private boolean useGCC32ABI; | |
| 56 private boolean attached; | |
| 8750 | 57 private long p_ps_prochandle; // native debugger handle |
| 58 private long symbolicator; // macosx symbolicator handle | |
| 59 private long task; // macosx task handle | |
| 3960 | 60 private boolean isCore; |
| 8750 | 61 private boolean isDarwin; // variant for bsd |
| 3960 | 62 |
| 63 // CDebugger support | |
| 64 private BsdCDebugger cdbg; | |
| 65 | |
| 66 // threadList and loadObjectList are filled by attach0 method | |
| 67 private List threadList; | |
| 68 private List loadObjectList; | |
| 69 | |
| 70 // called by native method lookupByAddress0 | |
| 71 private ClosestSymbol createClosestSymbol(String name, long offset) { | |
| 72 return new ClosestSymbol(name, offset); | |
| 73 } | |
| 74 | |
| 75 // called by native method attach0 | |
| 76 private LoadObject createLoadObject(String fileName, long textsize, | |
| 77 long base) { | |
| 78 File f = new File(fileName); | |
| 79 Address baseAddr = newAddress(base); | |
| 80 return new SharedObject(this, fileName, f.length(), baseAddr); | |
| 81 } | |
| 82 | |
| 83 // native methods | |
| 84 | |
| 85 private native static void init0() | |
| 86 throws DebuggerException; | |
| 87 private native void attach0(int pid) | |
| 88 throws DebuggerException; | |
| 89 private native void attach0(String execName, String coreName) | |
| 90 throws DebuggerException; | |
| 91 private native void detach0() | |
| 92 throws DebuggerException; | |
| 93 private native long lookupByName0(String objectName, String symbol) | |
| 94 throws DebuggerException; | |
| 95 private native ClosestSymbol lookupByAddress0(long address) | |
| 96 throws DebuggerException; | |
|
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97 private native long[] getThreadIntegerRegisterSet0(long unique_thread_id) |
| 3960 | 98 throws DebuggerException; |
| 99 private native byte[] readBytesFromProcess0(long address, long numBytes) | |
| 100 throws DebuggerException; | |
| 101 public native static int getAddressSize() ; | |
| 102 | |
| 103 // Note on Bsd threads are really processes. When target process is | |
| 104 // attached by a serviceability agent thread, only that thread can do | |
| 105 // ptrace operations on the target. This is because from kernel's point | |
| 106 // view, other threads are just separate processes and they are not | |
| 107 // attached to the target. When they attempt to make ptrace calls, | |
| 108 // an ESRCH error will be returned as kernel believes target is not | |
| 109 // being traced by the caller. | |
| 110 // To work around the problem, we use a worker thread here to handle | |
| 111 // all JNI functions that are making ptrace calls. | |
| 112 | |
| 113 interface WorkerThreadTask { | |
| 114 public void doit(BsdDebuggerLocal debugger) throws DebuggerException; | |
| 115 } | |
| 116 | |
| 117 class BsdDebuggerLocalWorkerThread extends Thread { | |
| 118 BsdDebuggerLocal debugger; | |
| 119 WorkerThreadTask task; | |
| 120 DebuggerException lastException; | |
| 121 | |
| 122 public BsdDebuggerLocalWorkerThread(BsdDebuggerLocal debugger) { | |
| 123 this.debugger = debugger; | |
| 124 setDaemon(true); | |
| 125 } | |
| 126 | |
| 127 public void run() { | |
| 128 synchronized (workerThread) { | |
| 129 for (;;) { | |
| 130 if (task != null) { | |
| 131 lastException = null; | |
| 132 try { | |
| 133 task.doit(debugger); | |
| 134 } catch (DebuggerException exp) { | |
| 135 lastException = exp; | |
| 136 } | |
| 137 task = null; | |
| 138 workerThread.notifyAll(); | |
| 139 } | |
| 140 | |
| 141 try { | |
| 142 workerThread.wait(); | |
| 143 } catch (InterruptedException x) {} | |
| 144 } | |
| 145 } | |
| 146 } | |
| 147 | |
| 148 public WorkerThreadTask execute(WorkerThreadTask task) throws DebuggerException { | |
| 149 synchronized (workerThread) { | |
| 150 this.task = task; | |
| 151 workerThread.notifyAll(); | |
| 152 while (this.task != null) { | |
| 153 try { | |
| 154 workerThread.wait(); | |
| 155 } catch (InterruptedException x) {} | |
| 156 } | |
| 157 if (lastException != null) { | |
| 158 throw new DebuggerException(lastException); | |
| 159 } else { | |
| 160 return task; | |
| 161 } | |
| 162 } | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 private BsdDebuggerLocalWorkerThread workerThread = null; | |
| 167 | |
| 168 //---------------------------------------------------------------------- | |
| 169 // Implementation of Debugger interface | |
| 170 // | |
| 171 | |
| 172 /** <P> machDesc may not be null. </P> | |
| 173 | |
| 174 <P> useCache should be set to true if debugging is being done | |
| 175 locally, and to false if the debugger is being created for the | |
| 176 purpose of supporting remote debugging. </P> */ | |
| 177 public BsdDebuggerLocal(MachineDescription machDesc, | |
| 178 boolean useCache) throws DebuggerException { | |
| 179 this.machDesc = machDesc; | |
| 180 utils = new DebuggerUtilities(machDesc.getAddressSize(), | |
| 181 machDesc.isBigEndian()) { | |
| 182 public void checkAlignment(long address, long alignment) { | |
| 183 // Need to override default checkAlignment because we need to | |
| 184 // relax alignment constraints on Bsd/x86 | |
| 185 if ( (address % alignment != 0) | |
| 186 &&(alignment != 8 || address % 4 != 0)) { | |
| 187 throw new UnalignedAddressException( | |
| 188 "Trying to read at address: " | |
| 189 + addressValueToString(address) | |
| 190 + " with alignment: " + alignment, | |
| 191 address); | |
| 192 } | |
| 193 } | |
| 194 }; | |
| 195 | |
| 196 if (useCache) { | |
| 197 // FIXME: re-test necessity of cache on Bsd, where data | |
| 198 // fetching is faster | |
| 199 // Cache portion of the remote process's address space. | |
| 200 // Fetching data over the socket connection to dbx is slow. | |
| 201 // Might be faster if we were using a binary protocol to talk to | |
| 202 // dbx, but would have to test. For now, this cache works best | |
| 203 // if it covers the entire heap of the remote process. FIXME: at | |
| 204 // least should make this tunable from the outside, i.e., via | |
| 205 // the UI. This is a cache of 4096 4K pages, or 16 MB. The page | |
| 206 // size must be adjusted to be the hardware's page size. | |
| 207 // (FIXME: should pick this up from the debugger.) | |
| 208 if (getCPU().equals("ia64")) { | |
| 209 initCache(16384, parseCacheNumPagesProperty(1024)); | |
| 210 } else { | |
| 211 initCache(4096, parseCacheNumPagesProperty(4096)); | |
| 212 } | |
| 213 } | |
| 214 | |
| 8750 | 215 isDarwin = getOS().equals("darwin"); |
| 3960 | 216 workerThread = new BsdDebuggerLocalWorkerThread(this); |
| 217 workerThread.start(); | |
| 218 } | |
| 219 | |
| 220 /** From the Debugger interface via JVMDebugger */ | |
| 221 public boolean hasProcessList() throws DebuggerException { | |
| 222 return false; | |
| 223 } | |
| 224 | |
| 225 /** From the Debugger interface via JVMDebugger */ | |
| 226 public List getProcessList() throws DebuggerException { | |
| 227 throw new DebuggerException("getProcessList not implemented yet"); | |
| 228 } | |
| 229 | |
| 230 private void checkAttached() throws DebuggerException { | |
| 231 if (attached) { | |
| 232 if (isCore) { | |
| 233 throw new DebuggerException("attached to a core dump already"); | |
| 234 } else { | |
| 235 throw new DebuggerException("attached to a process already"); | |
| 236 } | |
| 237 } | |
| 238 } | |
| 239 | |
| 240 private void requireAttach() { | |
| 241 if (! attached) { | |
| 242 throw new RuntimeException("not attached to a process or a core!"); | |
| 243 } | |
| 244 } | |
| 245 | |
| 246 /* called from attach methods */ | |
| 247 private void findABIVersion() throws DebuggerException { | |
| 8750 | 248 String libjvmName = isDarwin ? "libjvm.dylib" : "libjvm.so"; |
| 249 String libjvm_gName = isDarwin? "libjvm_g.dylib" : "libjvm_g.so"; | |
| 250 String javaThreadVt = isDarwin ? "_vt_10JavaThread" : "__vt_10JavaThread"; | |
| 251 if (lookupByName0(libjvmName, javaThreadVt) != 0 || | |
| 252 lookupByName0(libjvm_gName, javaThreadVt) != 0) { | |
| 3960 | 253 // old C++ ABI |
| 254 useGCC32ABI = false; | |
| 255 } else { | |
| 256 // new C++ ABI | |
| 257 useGCC32ABI = true; | |
| 258 } | |
| 259 } | |
| 260 | |
| 261 /** From the Debugger interface via JVMDebugger */ | |
| 262 public synchronized void attach(int processID) throws DebuggerException { | |
| 263 checkAttached(); | |
| 264 threadList = new ArrayList(); | |
| 265 loadObjectList = new ArrayList(); | |
| 266 class AttachTask implements WorkerThreadTask { | |
| 267 int pid; | |
| 268 public void doit(BsdDebuggerLocal debugger) { | |
| 269 debugger.attach0(pid); | |
| 270 debugger.attached = true; | |
| 271 debugger.isCore = false; | |
| 272 findABIVersion(); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 AttachTask task = new AttachTask(); | |
| 277 task.pid = processID; | |
| 278 workerThread.execute(task); | |
| 279 } | |
| 280 | |
| 281 /** From the Debugger interface via JVMDebugger */ | |
| 282 public synchronized void attach(String execName, String coreName) { | |
| 283 checkAttached(); | |
| 284 threadList = new ArrayList(); | |
| 285 loadObjectList = new ArrayList(); | |
| 286 attach0(execName, coreName); | |
| 287 attached = true; | |
| 288 isCore = true; | |
| 289 findABIVersion(); | |
| 290 } | |
| 291 | |
| 292 /** From the Debugger interface via JVMDebugger */ | |
| 293 public synchronized boolean detach() { | |
| 294 if (!attached) { | |
| 295 return false; | |
| 296 } | |
| 297 | |
| 298 threadList = null; | |
| 299 loadObjectList = null; | |
| 300 | |
| 301 if (isCore) { | |
| 302 detach0(); | |
| 303 attached = false; | |
| 304 return true; | |
| 305 } else { | |
| 306 class DetachTask implements WorkerThreadTask { | |
| 307 boolean result = false; | |
| 308 | |
| 309 public void doit(BsdDebuggerLocal debugger) { | |
| 310 debugger.detach0(); | |
| 311 debugger.attached = false; | |
| 312 result = true; | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 DetachTask task = new DetachTask(); | |
| 317 workerThread.execute(task); | |
| 318 return task.result; | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 /** From the Debugger interface via JVMDebugger */ | |
| 323 public Address parseAddress(String addressString) | |
| 324 throws NumberFormatException { | |
| 325 long addr = utils.scanAddress(addressString); | |
| 326 if (addr == 0) { | |
| 327 return null; | |
| 328 } | |
| 329 return new BsdAddress(this, addr); | |
| 330 } | |
| 331 | |
| 332 /** From the Debugger interface via JVMDebugger */ | |
| 333 public String getOS() { | |
| 334 return PlatformInfo.getOS(); | |
| 335 } | |
| 336 | |
| 337 /** From the Debugger interface via JVMDebugger */ | |
| 338 public String getCPU() { | |
| 339 return PlatformInfo.getCPU(); | |
| 340 } | |
| 341 | |
| 342 public boolean hasConsole() throws DebuggerException { | |
| 343 return false; | |
| 344 } | |
| 345 | |
| 346 public String consoleExecuteCommand(String cmd) throws DebuggerException { | |
| 347 throw new DebuggerException("No debugger console available on Bsd"); | |
| 348 } | |
| 349 | |
| 350 public String getConsolePrompt() throws DebuggerException { | |
| 351 return null; | |
| 352 } | |
| 353 | |
| 354 /* called from lookup */ | |
| 355 private long handleGCC32ABI(long addr, String symbol) throws DebuggerException { | |
| 356 if (useGCC32ABI && symbol.startsWith("_ZTV")) { | |
| 357 return addr + (2 * machDesc.getAddressSize()); | |
| 358 } else { | |
| 359 return addr; | |
| 360 } | |
| 361 } | |
| 362 | |
| 363 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 364 public synchronized Address lookup(String objectName, String symbol) { | |
| 365 requireAttach(); | |
| 366 if (!attached) { | |
| 367 return null; | |
| 368 } | |
| 369 | |
| 370 if (isCore) { | |
| 8750 | 371 // MacOSX symbol with "_" as leading |
| 372 long addr = lookupByName0(objectName, isDarwin ? "_" + symbol : symbol); | |
| 3960 | 373 return (addr == 0)? null : new BsdAddress(this, handleGCC32ABI(addr, symbol)); |
| 374 } else { | |
| 375 class LookupByNameTask implements WorkerThreadTask { | |
| 376 String objectName, symbol; | |
| 377 Address result; | |
| 378 | |
| 379 public void doit(BsdDebuggerLocal debugger) { | |
| 380 long addr = debugger.lookupByName0(objectName, symbol); | |
| 381 result = (addr == 0 ? null : new BsdAddress(debugger, handleGCC32ABI(addr, symbol))); | |
| 382 } | |
| 383 } | |
| 384 | |
| 385 LookupByNameTask task = new LookupByNameTask(); | |
| 386 task.objectName = objectName; | |
| 387 task.symbol = symbol; | |
| 388 workerThread.execute(task); | |
| 389 return task.result; | |
| 390 } | |
| 391 } | |
| 392 | |
| 393 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 394 public synchronized OopHandle lookupOop(String objectName, String symbol) { | |
| 395 Address addr = lookup(objectName, symbol); | |
| 396 if (addr == null) { | |
| 397 return null; | |
| 398 } | |
| 399 return addr.addOffsetToAsOopHandle(0); | |
| 400 } | |
| 401 | |
| 402 /** From the Debugger interface */ | |
| 403 public MachineDescription getMachineDescription() { | |
| 404 return machDesc; | |
| 405 } | |
| 406 | |
| 407 //---------------------------------------------------------------------- | |
| 408 // Implementation of ThreadAccess interface | |
| 409 // | |
| 410 | |
| 411 /** From the ThreadAccess interface via Debugger and JVMDebugger */ | |
|
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412 public ThreadProxy getThreadForIdentifierAddress(Address threadIdAddr, Address uniqueThreadIdAddr) { |
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413 return new BsdThread(this, threadIdAddr, uniqueThreadIdAddr); |
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414 } |
| 8750 | 415 |
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416 @Override |
| 3960 | 417 public ThreadProxy getThreadForIdentifierAddress(Address addr) { |
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418 throw new RuntimeException("unimplemented"); |
| 3960 | 419 } |
| 420 | |
| 421 /** From the ThreadAccess interface via Debugger and JVMDebugger */ | |
| 422 public ThreadProxy getThreadForThreadId(long id) { | |
| 423 return new BsdThread(this, id); | |
| 424 } | |
| 425 | |
| 426 //---------------------------------------------------------------------- | |
| 427 // Internal routines (for implementation of BsdAddress). | |
| 428 // These must not be called until the MachineDescription has been set up. | |
| 429 // | |
| 430 | |
| 431 /** From the BsdDebugger interface */ | |
| 432 public String addressValueToString(long address) { | |
| 433 return utils.addressValueToString(address); | |
| 434 } | |
| 435 | |
| 436 /** From the BsdDebugger interface */ | |
| 437 public BsdAddress readAddress(long address) | |
| 438 throws UnmappedAddressException, UnalignedAddressException { | |
| 439 long value = readAddressValue(address); | |
| 440 return (value == 0 ? null : new BsdAddress(this, value)); | |
| 441 } | |
| 442 public BsdAddress readCompOopAddress(long address) | |
| 443 throws UnmappedAddressException, UnalignedAddressException { | |
| 444 long value = readCompOopAddressValue(address); | |
| 445 return (value == 0 ? null : new BsdAddress(this, value)); | |
| 446 } | |
| 447 | |
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448 public BsdAddress readCompKlassAddress(long address) |
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449 throws UnmappedAddressException, UnalignedAddressException { |
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450 long value = readCompKlassAddressValue(address); |
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451 return (value == 0 ? null : new BsdAddress(this, value)); |
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452 } |
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453 |
| 3960 | 454 /** From the BsdDebugger interface */ |
| 455 public BsdOopHandle readOopHandle(long address) | |
| 456 throws UnmappedAddressException, UnalignedAddressException, | |
| 457 NotInHeapException { | |
| 458 long value = readAddressValue(address); | |
| 459 return (value == 0 ? null : new BsdOopHandle(this, value)); | |
| 460 } | |
| 461 public BsdOopHandle readCompOopHandle(long address) | |
| 462 throws UnmappedAddressException, UnalignedAddressException, | |
| 463 NotInHeapException { | |
| 464 long value = readCompOopAddressValue(address); | |
| 465 return (value == 0 ? null : new BsdOopHandle(this, value)); | |
| 466 } | |
| 467 | |
| 468 //---------------------------------------------------------------------- | |
| 469 // Thread context access | |
| 470 // | |
| 471 | |
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472 public synchronized long[] getThreadIntegerRegisterSet(long unique_thread_id) |
| 3960 | 473 throws DebuggerException { |
| 474 requireAttach(); | |
| 475 if (isCore) { | |
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476 return getThreadIntegerRegisterSet0(unique_thread_id); |
| 3960 | 477 } else { |
| 478 class GetThreadIntegerRegisterSetTask implements WorkerThreadTask { | |
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479 long unique_thread_id; |
| 3960 | 480 long[] result; |
| 481 public void doit(BsdDebuggerLocal debugger) { | |
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482 result = debugger.getThreadIntegerRegisterSet0(unique_thread_id); |
| 3960 | 483 } |
| 484 } | |
| 485 | |
| 486 GetThreadIntegerRegisterSetTask task = new GetThreadIntegerRegisterSetTask(); | |
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487 task.unique_thread_id = unique_thread_id; |
| 3960 | 488 workerThread.execute(task); |
| 489 return task.result; | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 /** Need to override this to relax alignment checks on x86. */ | |
| 494 public long readCInteger(long address, long numBytes, boolean isUnsigned) | |
| 495 throws UnmappedAddressException, UnalignedAddressException { | |
| 496 // Only slightly relaxed semantics -- this is a hack, but is | |
| 497 // necessary on x86 where it seems the compiler is | |
| 498 // putting some global 64-bit data on 32-bit boundaries | |
| 499 if (numBytes == 8) { | |
| 500 utils.checkAlignment(address, 4); | |
| 501 } else { | |
| 502 utils.checkAlignment(address, numBytes); | |
| 503 } | |
| 504 byte[] data = readBytes(address, numBytes); | |
| 505 return utils.dataToCInteger(data, isUnsigned); | |
| 506 } | |
| 507 | |
| 508 // Overridden from DebuggerBase because we need to relax alignment | |
| 509 // constraints on x86 | |
| 510 public long readJLong(long address) | |
| 511 throws UnmappedAddressException, UnalignedAddressException { | |
| 512 utils.checkAlignment(address, jintSize); | |
| 513 byte[] data = readBytes(address, jlongSize); | |
| 514 return utils.dataToJLong(data, jlongSize); | |
| 515 } | |
| 516 | |
| 517 //---------------------------------------------------------------------- | |
| 518 // Address access. Can not be package private, but should only be | |
| 519 // accessed by the architecture-specific subpackages. | |
| 520 | |
| 521 /** From the BsdDebugger interface */ | |
| 522 public long getAddressValue(Address addr) { | |
| 523 if (addr == null) return 0; | |
| 524 return ((BsdAddress) addr).getValue(); | |
| 525 } | |
| 526 | |
| 527 /** From the BsdDebugger interface */ | |
| 528 public Address newAddress(long value) { | |
| 529 if (value == 0) return null; | |
| 530 return new BsdAddress(this, value); | |
| 531 } | |
| 532 | |
| 533 /** From the BsdCDebugger interface */ | |
| 534 public List/*<ThreadProxy>*/ getThreadList() { | |
| 535 requireAttach(); | |
| 536 return threadList; | |
| 537 } | |
| 538 | |
| 539 /** From the BsdCDebugger interface */ | |
| 540 public List/*<LoadObject>*/ getLoadObjectList() { | |
| 541 requireAttach(); | |
| 542 return loadObjectList; | |
| 543 } | |
| 544 | |
| 545 /** From the BsdCDebugger interface */ | |
| 546 public synchronized ClosestSymbol lookup(long addr) { | |
| 547 requireAttach(); | |
| 548 if (isCore) { | |
| 549 return lookupByAddress0(addr); | |
| 550 } else { | |
| 551 class LookupByAddressTask implements WorkerThreadTask { | |
| 552 long addr; | |
| 553 ClosestSymbol result; | |
| 554 | |
| 555 public void doit(BsdDebuggerLocal debugger) { | |
| 556 result = debugger.lookupByAddress0(addr); | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 LookupByAddressTask task = new LookupByAddressTask(); | |
| 561 task.addr = addr; | |
| 562 workerThread.execute(task); | |
| 563 return task.result; | |
| 564 } | |
| 565 } | |
| 566 | |
| 567 public CDebugger getCDebugger() { | |
| 568 if (cdbg == null) { | |
| 569 String cpu = getCPU(); | |
| 570 if (cpu.equals("ia64") ) { | |
| 571 // IA-64 is not supported because of stack-walking issues | |
| 572 return null; | |
| 573 } | |
| 574 cdbg = new BsdCDebugger(this); | |
| 575 } | |
| 576 return cdbg; | |
| 577 } | |
| 578 | |
| 579 /** This reads bytes from the remote process. */ | |
| 580 public synchronized ReadResult readBytesFromProcess(long address, | |
| 581 long numBytes) throws UnmappedAddressException, DebuggerException { | |
| 582 requireAttach(); | |
| 583 if (isCore) { | |
| 584 byte[] res = readBytesFromProcess0(address, numBytes); | |
| 585 return (res != null)? new ReadResult(res) : new ReadResult(address); | |
| 586 } else { | |
| 587 class ReadBytesFromProcessTask implements WorkerThreadTask { | |
| 588 long address, numBytes; | |
| 589 ReadResult result; | |
| 590 public void doit(BsdDebuggerLocal debugger) { | |
| 591 byte[] res = debugger.readBytesFromProcess0(address, numBytes); | |
| 592 if (res != null) | |
| 593 result = new ReadResult(res); | |
| 594 else | |
| 595 result = new ReadResult(address); | |
| 596 } | |
| 597 } | |
| 598 | |
| 599 ReadBytesFromProcessTask task = new ReadBytesFromProcessTask(); | |
| 600 task.address = address; | |
| 601 task.numBytes = numBytes; | |
| 602 workerThread.execute(task); | |
| 603 return task.result; | |
| 604 } | |
| 605 } | |
| 606 | |
| 607 public void writeBytesToProcess(long address, long numBytes, byte[] data) | |
| 608 throws UnmappedAddressException, DebuggerException { | |
| 609 // FIXME | |
| 610 throw new DebuggerException("Unimplemented"); | |
| 611 } | |
| 612 | |
| 8750 | 613 /** this functions used for core file reading and called from native attach0, |
| 614 it returns an array of long integers as | |
| 615 [thread_id, stack_start, stack_end, thread_id, stack_start, stack_end, ....] for | |
| 616 all java threads recorded in Threads. Also adds the ThreadProxy to threadList */ | |
| 617 public long[] getJavaThreadsInfo() { | |
| 618 requireAttach(); | |
| 619 Threads threads = VM.getVM().getThreads(); | |
| 620 int len = threads.getNumberOfThreads(); | |
| 621 long[] result = new long[len * 3]; // triple | |
| 622 JavaThread t = threads.first(); | |
| 623 long beg, end; | |
| 624 int i = 0; | |
| 625 while (t != null) { | |
| 626 end = t.getStackBaseValue(); | |
| 627 beg = end - t.getStackSize(); | |
| 628 BsdThread bsdt = (BsdThread)t.getThreadProxy(); | |
| 629 long uid = bsdt.getUniqueThreadId(); | |
| 630 if (threadList != null) threadList.add(bsdt); | |
| 631 result[i] = uid; | |
| 632 result[i + 1] = beg; | |
| 633 result[i + 2] = end; | |
| 634 t = t.next(); | |
| 635 i += 3; | |
| 636 } | |
| 637 return result; | |
| 638 } | |
| 639 | |
| 3960 | 640 static { |
| 641 System.loadLibrary("saproc"); | |
| 642 init0(); | |
| 643 } | |
| 644 } |