Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebuggerLocal.java @ 6848:8e47bac5643a
7054512: Compress class pointers after perm gen removal
Summary: support of compress class pointers in the compilers.
Reviewed-by: kvn, twisti
| author | roland |
|---|---|
| date | Tue, 09 Oct 2012 10:11:38 +0200 |
| parents | c18cbe5936b8 |
| children | f6a055fcf47d |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 2002, 2008, 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.debugger.linux; | |
| 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.*; | |
| 34 import java.lang.reflect.*; | |
| 35 | |
| 36 /** <P> An implementation of the JVMDebugger interface. The basic debug | |
| 37 facilities are implemented through ptrace interface in the JNI code | |
| 38 (libsaproc.so). Library maps and symbol table management are done in | |
| 39 JNI. </P> | |
| 40 | |
| 41 <P> <B>NOTE</B> that since we have the notion of fetching "Java | |
| 42 primitive types" from the remote process (which might have | |
| 43 different sizes than we expect) we have a bootstrapping | |
| 44 problem. We need to know the sizes of these types before we can | |
| 45 fetch them. The current implementation solves this problem by | |
| 46 requiring that it be configured with these type sizes before they | |
| 47 can be fetched. The readJ(Type) routines here will throw a | |
| 48 RuntimeException if they are called before the debugger is | |
| 49 configured with the Java primitive type sizes. </P> */ | |
| 50 | |
| 51 public class LinuxDebuggerLocal extends DebuggerBase implements LinuxDebugger { | |
| 52 private boolean useGCC32ABI; | |
| 53 private boolean attached; | |
| 54 private long p_ps_prochandle; // native debugger handle | |
| 55 private boolean isCore; | |
| 56 | |
| 57 // CDebugger support | |
| 58 private LinuxCDebugger cdbg; | |
| 59 | |
| 60 // threadList and loadObjectList are filled by attach0 method | |
| 61 private List threadList; | |
| 62 private List loadObjectList; | |
| 63 | |
| 64 // called by native method lookupByAddress0 | |
| 65 private ClosestSymbol createClosestSymbol(String name, long offset) { | |
| 66 return new ClosestSymbol(name, offset); | |
| 67 } | |
| 68 | |
| 69 // called by native method attach0 | |
| 70 private LoadObject createLoadObject(String fileName, long textsize, | |
| 71 long base) { | |
| 72 File f = new File(fileName); | |
| 73 Address baseAddr = newAddress(base); | |
| 74 return new SharedObject(this, fileName, f.length(), baseAddr); | |
| 75 } | |
| 76 | |
| 77 // native methods | |
| 78 | |
| 79 private native static void init0() | |
| 80 throws DebuggerException; | |
| 81 private native void attach0(int pid) | |
| 82 throws DebuggerException; | |
| 83 private native void attach0(String execName, String coreName) | |
| 84 throws DebuggerException; | |
| 85 private native void detach0() | |
| 86 throws DebuggerException; | |
| 87 private native long lookupByName0(String objectName, String symbol) | |
| 88 throws DebuggerException; | |
| 89 private native ClosestSymbol lookupByAddress0(long address) | |
| 90 throws DebuggerException; | |
| 91 private native long[] getThreadIntegerRegisterSet0(int lwp_id) | |
| 92 throws DebuggerException; | |
| 93 private native byte[] readBytesFromProcess0(long address, long numBytes) | |
| 94 throws DebuggerException; | |
| 95 public native static int getAddressSize() ; | |
| 96 | |
| 97 // Note on Linux threads are really processes. When target process is | |
| 98 // attached by a serviceability agent thread, only that thread can do | |
| 99 // ptrace operations on the target. This is because from kernel's point | |
| 100 // view, other threads are just separate processes and they are not | |
| 101 // attached to the target. When they attempt to make ptrace calls, | |
| 102 // an ESRCH error will be returned as kernel believes target is not | |
| 103 // being traced by the caller. | |
| 104 // To work around the problem, we use a worker thread here to handle | |
| 105 // all JNI functions that are making ptrace calls. | |
| 106 | |
| 107 interface WorkerThreadTask { | |
| 108 public void doit(LinuxDebuggerLocal debugger) throws DebuggerException; | |
| 109 } | |
| 110 | |
| 111 class LinuxDebuggerLocalWorkerThread extends Thread { | |
| 112 LinuxDebuggerLocal debugger; | |
| 113 WorkerThreadTask task; | |
| 114 DebuggerException lastException; | |
| 115 | |
| 116 public LinuxDebuggerLocalWorkerThread(LinuxDebuggerLocal debugger) { | |
| 117 this.debugger = debugger; | |
| 118 setDaemon(true); | |
| 119 } | |
| 120 | |
| 121 public void run() { | |
| 122 synchronized (workerThread) { | |
| 123 for (;;) { | |
| 124 if (task != null) { | |
| 125 lastException = null; | |
| 126 try { | |
| 127 task.doit(debugger); | |
| 128 } catch (DebuggerException exp) { | |
| 129 lastException = exp; | |
| 130 } | |
| 131 task = null; | |
| 132 workerThread.notifyAll(); | |
| 133 } | |
| 134 | |
| 135 try { | |
| 136 workerThread.wait(); | |
| 137 } catch (InterruptedException x) {} | |
| 138 } | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 public WorkerThreadTask execute(WorkerThreadTask task) throws DebuggerException { | |
| 143 synchronized (workerThread) { | |
| 144 this.task = task; | |
| 145 workerThread.notifyAll(); | |
| 146 while (this.task != null) { | |
| 147 try { | |
| 148 workerThread.wait(); | |
| 149 } catch (InterruptedException x) {} | |
| 150 } | |
| 151 if (lastException != null) { | |
| 152 throw new DebuggerException(lastException); | |
| 153 } else { | |
| 154 return task; | |
| 155 } | |
| 156 } | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 private LinuxDebuggerLocalWorkerThread workerThread = null; | |
| 161 | |
| 162 //---------------------------------------------------------------------- | |
| 163 // Implementation of Debugger interface | |
| 164 // | |
| 165 | |
| 166 /** <P> machDesc may not be null. </P> | |
| 167 | |
| 168 <P> useCache should be set to true if debugging is being done | |
| 169 locally, and to false if the debugger is being created for the | |
| 170 purpose of supporting remote debugging. </P> */ | |
| 171 public LinuxDebuggerLocal(MachineDescription machDesc, | |
| 172 boolean useCache) throws DebuggerException { | |
| 173 this.machDesc = machDesc; | |
| 174 utils = new DebuggerUtilities(machDesc.getAddressSize(), | |
| 175 machDesc.isBigEndian()) { | |
| 176 public void checkAlignment(long address, long alignment) { | |
| 177 // Need to override default checkAlignment because we need to | |
| 178 // relax alignment constraints on Linux/x86 | |
| 179 if ( (address % alignment != 0) | |
| 180 &&(alignment != 8 || address % 4 != 0)) { | |
| 181 throw new UnalignedAddressException( | |
| 182 "Trying to read at address: " | |
| 183 + addressValueToString(address) | |
| 184 + " with alignment: " + alignment, | |
| 185 address); | |
| 186 } | |
| 187 } | |
| 188 }; | |
| 189 | |
| 190 if (useCache) { | |
| 191 // FIXME: re-test necessity of cache on Linux, where data | |
| 192 // fetching is faster | |
| 193 // Cache portion of the remote process's address space. | |
| 194 // Fetching data over the socket connection to dbx is slow. | |
| 195 // Might be faster if we were using a binary protocol to talk to | |
| 196 // dbx, but would have to test. For now, this cache works best | |
| 197 // if it covers the entire heap of the remote process. FIXME: at | |
| 198 // least should make this tunable from the outside, i.e., via | |
| 199 // the UI. This is a cache of 4096 4K pages, or 16 MB. The page | |
| 200 // size must be adjusted to be the hardware's page size. | |
| 201 // (FIXME: should pick this up from the debugger.) | |
| 202 if (getCPU().equals("ia64")) { | |
| 203 initCache(16384, parseCacheNumPagesProperty(1024)); | |
| 204 } else { | |
| 205 initCache(4096, parseCacheNumPagesProperty(4096)); | |
| 206 } | |
| 207 } | |
| 208 | |
| 209 workerThread = new LinuxDebuggerLocalWorkerThread(this); | |
| 210 workerThread.start(); | |
| 211 } | |
| 212 | |
| 213 /** From the Debugger interface via JVMDebugger */ | |
| 214 public boolean hasProcessList() throws DebuggerException { | |
| 215 return false; | |
| 216 } | |
| 217 | |
| 218 /** From the Debugger interface via JVMDebugger */ | |
| 219 public List getProcessList() throws DebuggerException { | |
| 220 throw new DebuggerException("getProcessList not implemented yet"); | |
| 221 } | |
| 222 | |
| 223 private void checkAttached() throws DebuggerException { | |
| 224 if (attached) { | |
| 225 if (isCore) { | |
| 226 throw new DebuggerException("attached to a core dump already"); | |
| 227 } else { | |
| 228 throw new DebuggerException("attached to a process already"); | |
| 229 } | |
| 230 } | |
| 231 } | |
| 232 | |
| 233 private void requireAttach() { | |
| 234 if (! attached) { | |
| 235 throw new RuntimeException("not attached to a process or a core!"); | |
| 236 } | |
| 237 } | |
| 238 | |
| 239 /* called from attach methods */ | |
| 240 private void findABIVersion() throws DebuggerException { | |
| 241 if (lookupByName0("libjvm.so", "__vt_10JavaThread") != 0 || | |
| 242 lookupByName0("libjvm_g.so", "__vt_10JavaThread") != 0) { | |
| 243 // old C++ ABI | |
| 244 useGCC32ABI = false; | |
| 245 } else { | |
| 246 // new C++ ABI | |
| 247 useGCC32ABI = true; | |
| 248 } | |
| 249 } | |
| 250 | |
| 251 /** From the Debugger interface via JVMDebugger */ | |
| 252 public synchronized void attach(int processID) throws DebuggerException { | |
| 253 checkAttached(); | |
| 254 threadList = new ArrayList(); | |
| 255 loadObjectList = new ArrayList(); | |
| 256 class AttachTask implements WorkerThreadTask { | |
| 257 int pid; | |
| 258 public void doit(LinuxDebuggerLocal debugger) { | |
| 259 debugger.attach0(pid); | |
| 260 debugger.attached = true; | |
| 261 debugger.isCore = false; | |
| 262 findABIVersion(); | |
| 263 } | |
| 264 } | |
| 265 | |
| 266 AttachTask task = new AttachTask(); | |
| 267 task.pid = processID; | |
| 268 workerThread.execute(task); | |
| 269 } | |
| 270 | |
| 271 /** From the Debugger interface via JVMDebugger */ | |
| 272 public synchronized void attach(String execName, String coreName) { | |
| 273 checkAttached(); | |
| 274 threadList = new ArrayList(); | |
| 275 loadObjectList = new ArrayList(); | |
| 276 attach0(execName, coreName); | |
| 277 attached = true; | |
| 278 isCore = true; | |
| 279 findABIVersion(); | |
| 280 } | |
| 281 | |
| 282 /** From the Debugger interface via JVMDebugger */ | |
| 283 public synchronized boolean detach() { | |
| 284 if (!attached) { | |
| 285 return false; | |
| 286 } | |
| 287 | |
| 288 threadList = null; | |
| 289 loadObjectList = null; | |
| 290 | |
| 291 if (isCore) { | |
| 292 detach0(); | |
| 293 attached = false; | |
| 294 return true; | |
| 295 } else { | |
| 296 class DetachTask implements WorkerThreadTask { | |
| 297 boolean result = false; | |
| 298 | |
| 299 public void doit(LinuxDebuggerLocal debugger) { | |
| 300 debugger.detach0(); | |
| 301 debugger.attached = false; | |
| 302 result = true; | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 DetachTask task = new DetachTask(); | |
| 307 workerThread.execute(task); | |
| 308 return task.result; | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 /** From the Debugger interface via JVMDebugger */ | |
| 313 public Address parseAddress(String addressString) | |
| 314 throws NumberFormatException { | |
| 315 long addr = utils.scanAddress(addressString); | |
| 316 if (addr == 0) { | |
| 317 return null; | |
| 318 } | |
| 319 return new LinuxAddress(this, addr); | |
| 320 } | |
| 321 | |
| 322 /** From the Debugger interface via JVMDebugger */ | |
| 323 public String getOS() { | |
| 324 return PlatformInfo.getOS(); | |
| 325 } | |
| 326 | |
| 327 /** From the Debugger interface via JVMDebugger */ | |
| 328 public String getCPU() { | |
| 329 return PlatformInfo.getCPU(); | |
| 330 } | |
| 331 | |
| 332 public boolean hasConsole() throws DebuggerException { | |
| 333 return false; | |
| 334 } | |
| 335 | |
| 336 public String consoleExecuteCommand(String cmd) throws DebuggerException { | |
| 337 throw new DebuggerException("No debugger console available on Linux"); | |
| 338 } | |
| 339 | |
| 340 public String getConsolePrompt() throws DebuggerException { | |
| 341 return null; | |
| 342 } | |
| 343 | |
| 344 /* called from lookup */ | |
| 345 private long handleGCC32ABI(long addr, String symbol) throws DebuggerException { | |
| 346 if (useGCC32ABI && symbol.startsWith("_ZTV")) { | |
| 347 return addr + (2 * machDesc.getAddressSize()); | |
| 348 } else { | |
| 349 return addr; | |
| 350 } | |
| 351 } | |
| 352 | |
| 353 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 354 public synchronized Address lookup(String objectName, String symbol) { | |
| 355 requireAttach(); | |
| 356 if (!attached) { | |
| 357 return null; | |
| 358 } | |
| 359 | |
| 360 if (isCore) { | |
| 361 long addr = lookupByName0(objectName, symbol); | |
| 362 return (addr == 0)? null : new LinuxAddress(this, handleGCC32ABI(addr, symbol)); | |
| 363 } else { | |
| 364 class LookupByNameTask implements WorkerThreadTask { | |
| 365 String objectName, symbol; | |
| 366 Address result; | |
| 367 | |
| 368 public void doit(LinuxDebuggerLocal debugger) { | |
| 369 long addr = debugger.lookupByName0(objectName, symbol); | |
| 370 result = (addr == 0 ? null : new LinuxAddress(debugger, handleGCC32ABI(addr, symbol))); | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 LookupByNameTask task = new LookupByNameTask(); | |
| 375 task.objectName = objectName; | |
| 376 task.symbol = symbol; | |
| 377 workerThread.execute(task); | |
| 378 return task.result; | |
| 379 } | |
| 380 } | |
| 381 | |
| 382 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 383 public synchronized OopHandle lookupOop(String objectName, String symbol) { | |
| 384 Address addr = lookup(objectName, symbol); | |
| 385 if (addr == null) { | |
| 386 return null; | |
| 387 } | |
| 388 return addr.addOffsetToAsOopHandle(0); | |
| 389 } | |
| 390 | |
| 391 /** From the Debugger interface */ | |
| 392 public MachineDescription getMachineDescription() { | |
| 393 return machDesc; | |
| 394 } | |
| 395 | |
| 396 //---------------------------------------------------------------------- | |
| 397 // Implementation of ThreadAccess interface | |
| 398 // | |
| 399 | |
| 400 /** From the ThreadAccess interface via Debugger and JVMDebugger */ | |
| 401 public ThreadProxy getThreadForIdentifierAddress(Address addr) { | |
| 402 return new LinuxThread(this, addr); | |
| 403 } | |
| 404 | |
| 405 /** From the ThreadAccess interface via Debugger and JVMDebugger */ | |
| 406 public ThreadProxy getThreadForThreadId(long id) { | |
| 407 return new LinuxThread(this, id); | |
| 408 } | |
| 409 | |
| 410 //---------------------------------------------------------------------- | |
| 411 // Internal routines (for implementation of LinuxAddress). | |
| 412 // These must not be called until the MachineDescription has been set up. | |
| 413 // | |
| 414 | |
| 415 /** From the LinuxDebugger interface */ | |
| 416 public String addressValueToString(long address) { | |
| 417 return utils.addressValueToString(address); | |
| 418 } | |
| 419 | |
| 420 /** From the LinuxDebugger interface */ | |
| 421 public LinuxAddress readAddress(long address) | |
| 422 throws UnmappedAddressException, UnalignedAddressException { | |
| 423 long value = readAddressValue(address); | |
| 424 return (value == 0 ? null : new LinuxAddress(this, value)); | |
| 425 } | |
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426 public LinuxAddress readCompOopAddress(long address) |
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427 throws UnmappedAddressException, UnalignedAddressException { |
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428 long value = readCompOopAddressValue(address); |
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429 return (value == 0 ? null : new LinuxAddress(this, value)); |
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430 } |
| 0 | 431 |
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432 public LinuxAddress readCompKlassAddress(long address) |
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433 throws UnmappedAddressException, UnalignedAddressException { |
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434 long value = readCompKlassAddressValue(address); |
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435 return (value == 0 ? null : new LinuxAddress(this, value)); |
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436 } |
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437 |
| 0 | 438 /** From the LinuxDebugger interface */ |
| 439 public LinuxOopHandle readOopHandle(long address) | |
| 440 throws UnmappedAddressException, UnalignedAddressException, | |
| 441 NotInHeapException { | |
| 442 long value = readAddressValue(address); | |
| 443 return (value == 0 ? null : new LinuxOopHandle(this, value)); | |
| 444 } | |
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445 public LinuxOopHandle readCompOopHandle(long address) |
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446 throws UnmappedAddressException, UnalignedAddressException, |
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447 NotInHeapException { |
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448 long value = readCompOopAddressValue(address); |
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449 return (value == 0 ? null : new LinuxOopHandle(this, value)); |
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450 } |
| 0 | 451 |
| 452 //---------------------------------------------------------------------- | |
| 453 // Thread context access | |
| 454 // | |
| 455 | |
| 456 public synchronized long[] getThreadIntegerRegisterSet(int lwp_id) | |
| 457 throws DebuggerException { | |
| 458 requireAttach(); | |
| 459 if (isCore) { | |
| 460 return getThreadIntegerRegisterSet0(lwp_id); | |
| 461 } else { | |
| 462 class GetThreadIntegerRegisterSetTask implements WorkerThreadTask { | |
| 463 int lwp_id; | |
| 464 long[] result; | |
| 465 public void doit(LinuxDebuggerLocal debugger) { | |
| 466 result = debugger.getThreadIntegerRegisterSet0(lwp_id); | |
| 467 } | |
| 468 } | |
| 469 | |
| 470 GetThreadIntegerRegisterSetTask task = new GetThreadIntegerRegisterSetTask(); | |
| 471 task.lwp_id = lwp_id; | |
| 472 workerThread.execute(task); | |
| 473 return task.result; | |
| 474 } | |
| 475 } | |
| 476 | |
| 477 /** Need to override this to relax alignment checks on x86. */ | |
| 478 public long readCInteger(long address, long numBytes, boolean isUnsigned) | |
| 479 throws UnmappedAddressException, UnalignedAddressException { | |
| 480 // Only slightly relaxed semantics -- this is a hack, but is | |
| 481 // necessary on x86 where it seems the compiler is | |
| 482 // putting some global 64-bit data on 32-bit boundaries | |
| 483 if (numBytes == 8) { | |
| 484 utils.checkAlignment(address, 4); | |
| 485 } else { | |
| 486 utils.checkAlignment(address, numBytes); | |
| 487 } | |
| 488 byte[] data = readBytes(address, numBytes); | |
| 489 return utils.dataToCInteger(data, isUnsigned); | |
| 490 } | |
| 491 | |
| 492 // Overridden from DebuggerBase because we need to relax alignment | |
| 493 // constraints on x86 | |
| 494 public long readJLong(long address) | |
| 495 throws UnmappedAddressException, UnalignedAddressException { | |
| 496 utils.checkAlignment(address, jintSize); | |
| 497 byte[] data = readBytes(address, jlongSize); | |
| 498 return utils.dataToJLong(data, jlongSize); | |
| 499 } | |
| 500 | |
| 501 //---------------------------------------------------------------------- | |
| 502 // Address access. Can not be package private, but should only be | |
| 503 // accessed by the architecture-specific subpackages. | |
| 504 | |
| 505 /** From the LinuxDebugger interface */ | |
| 506 public long getAddressValue(Address addr) { | |
| 507 if (addr == null) return 0; | |
| 508 return ((LinuxAddress) addr).getValue(); | |
| 509 } | |
| 510 | |
| 511 /** From the LinuxDebugger interface */ | |
| 512 public Address newAddress(long value) { | |
| 513 if (value == 0) return null; | |
| 514 return new LinuxAddress(this, value); | |
| 515 } | |
| 516 | |
| 517 /** From the LinuxCDebugger interface */ | |
| 518 public List/*<ThreadProxy>*/ getThreadList() { | |
| 519 requireAttach(); | |
| 520 return threadList; | |
| 521 } | |
| 522 | |
| 523 /** From the LinuxCDebugger interface */ | |
| 524 public List/*<LoadObject>*/ getLoadObjectList() { | |
| 525 requireAttach(); | |
| 526 return loadObjectList; | |
| 527 } | |
| 528 | |
| 529 /** From the LinuxCDebugger interface */ | |
| 530 public synchronized ClosestSymbol lookup(long addr) { | |
| 531 requireAttach(); | |
| 532 if (isCore) { | |
| 533 return lookupByAddress0(addr); | |
| 534 } else { | |
| 535 class LookupByAddressTask implements WorkerThreadTask { | |
| 536 long addr; | |
| 537 ClosestSymbol result; | |
| 538 | |
| 539 public void doit(LinuxDebuggerLocal debugger) { | |
| 540 result = debugger.lookupByAddress0(addr); | |
| 541 } | |
| 542 } | |
| 543 | |
| 544 LookupByAddressTask task = new LookupByAddressTask(); | |
| 545 task.addr = addr; | |
| 546 workerThread.execute(task); | |
| 547 return task.result; | |
| 548 } | |
| 549 } | |
| 550 | |
| 551 public CDebugger getCDebugger() { | |
| 552 if (cdbg == null) { | |
| 553 String cpu = getCPU(); | |
| 554 if (cpu.equals("ia64") ) { | |
| 555 // IA-64 is not supported because of stack-walking issues | |
| 556 return null; | |
| 557 } | |
| 558 cdbg = new LinuxCDebugger(this); | |
| 559 } | |
| 560 return cdbg; | |
| 561 } | |
| 562 | |
| 563 /** This reads bytes from the remote process. */ | |
| 564 public synchronized ReadResult readBytesFromProcess(long address, | |
| 565 long numBytes) throws UnmappedAddressException, DebuggerException { | |
| 566 requireAttach(); | |
| 567 if (isCore) { | |
| 568 byte[] res = readBytesFromProcess0(address, numBytes); | |
| 569 return (res != null)? new ReadResult(res) : new ReadResult(address); | |
| 570 } else { | |
| 571 class ReadBytesFromProcessTask implements WorkerThreadTask { | |
| 572 long address, numBytes; | |
| 573 ReadResult result; | |
| 574 public void doit(LinuxDebuggerLocal debugger) { | |
| 575 byte[] res = debugger.readBytesFromProcess0(address, numBytes); | |
| 576 if (res != null) | |
| 577 result = new ReadResult(res); | |
| 578 else | |
| 579 result = new ReadResult(address); | |
| 580 } | |
| 581 } | |
| 582 | |
| 583 ReadBytesFromProcessTask task = new ReadBytesFromProcessTask(); | |
| 584 task.address = address; | |
| 585 task.numBytes = numBytes; | |
| 586 workerThread.execute(task); | |
| 587 return task.result; | |
| 588 } | |
| 589 } | |
| 590 | |
| 591 public void writeBytesToProcess(long address, long numBytes, byte[] data) | |
| 592 throws UnmappedAddressException, DebuggerException { | |
| 593 // FIXME | |
| 594 throw new DebuggerException("Unimplemented"); | |
| 595 } | |
| 596 | |
| 597 static { | |
| 598 System.loadLibrary("saproc"); | |
| 599 init0(); | |
| 600 } | |
| 601 } |