Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/proc/ProcDebuggerLocal.java @ 17736:58fc1b1523dc
8034079: G1: Refactor the HeapRegionSet hierarchy
Reviewed-by: tschatzl, pliden
| author | brutisso |
|---|---|
| date | Fri, 14 Mar 2014 10:15:46 +0100 |
| parents | 8e47bac5643a |
| children |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2002, 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.debugger.proc; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.net.*; | |
| 29 import java.util.*; | |
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30 import java.lang.reflect.*; |
| 0 | 31 import sun.jvm.hotspot.debugger.*; |
| 32 import sun.jvm.hotspot.debugger.cdbg.*; | |
| 33 import sun.jvm.hotspot.debugger.proc.amd64.*; | |
| 34 import sun.jvm.hotspot.debugger.proc.sparc.*; | |
| 35 import sun.jvm.hotspot.debugger.proc.x86.*; | |
| 36 import sun.jvm.hotspot.debugger.amd64.*; | |
| 37 import sun.jvm.hotspot.debugger.sparc.*; | |
| 38 import sun.jvm.hotspot.debugger.x86.*; | |
| 39 import sun.jvm.hotspot.utilities.*; | |
| 40 | |
| 41 /** <P> An implementation of the JVMDebugger interface which sits on | |
| 42 * top of proc and relies on the SA's proc import module for | |
| 43 * communication with the debugger. </P> | |
| 44 * | |
| 45 * <P> <B>NOTE</B> that since we have the notion of fetching "Java | |
| 46 * primitive types" from the remote process (which might have | |
| 47 * different sizes than we expect) we have a bootstrapping | |
| 48 * problem. We need to know the sizes of these types before we can | |
| 49 * fetch them. The current implementation solves this problem by | |
| 50 * requiring that it be configured with these type sizes before they | |
| 51 * can be fetched. The readJ(Type) routines here will throw a | |
| 52 * RuntimeException if they are called before the debugger is | |
| 53 * configured with the Java primitive type sizes. </P> | |
| 54 */ | |
| 55 | |
| 56 public class ProcDebuggerLocal extends DebuggerBase implements ProcDebugger { | |
| 57 protected static final int cacheSize = 16 * 1024 * 1024; // 16 MB | |
| 58 | |
| 59 //------------------------------------------------------------------------ | |
| 60 // Implementation of Debugger interface | |
| 61 // | |
| 62 | |
| 63 /** <P> machDesc may be null if it couldn't be determined yet; i.e., | |
| 64 * if we're on SPARC, we need to ask the remote process whether | |
| 65 * we're in 32- or 64-bit mode. </P> | |
| 66 * | |
| 67 * <P> useCache should be set to true if debugging is being done | |
| 68 * locally, and to false if the debugger is being created for the | |
| 69 * purpose of supporting remote debugging. </P> */ | |
| 70 public ProcDebuggerLocal(MachineDescription machDesc, boolean useCache) { | |
| 71 this.machDesc = machDesc; | |
| 72 int cacheNumPages; | |
| 73 int cachePageSize; | |
| 74 | |
| 75 final String cpu = PlatformInfo.getCPU(); | |
| 76 if (cpu.equals("sparc")) { | |
| 77 threadFactory = new ProcSPARCThreadFactory(this); | |
| 78 pcRegIndex = SPARCThreadContext.R_PC; | |
| 79 fpRegIndex = SPARCThreadContext.R_I6; | |
| 80 } else if (cpu.equals("x86")) { | |
| 81 threadFactory = new ProcX86ThreadFactory(this); | |
| 82 pcRegIndex = X86ThreadContext.EIP; | |
| 83 fpRegIndex = X86ThreadContext.EBP; | |
| 84 unalignedAccessesOkay = true; | |
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85 } else if (cpu.equals("amd64") || cpu.equals("x86_64")) { |
| 0 | 86 threadFactory = new ProcAMD64ThreadFactory(this); |
| 87 pcRegIndex = AMD64ThreadContext.RIP; | |
| 88 fpRegIndex = AMD64ThreadContext.RBP; | |
| 89 } else { | |
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90 try { |
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91 Class tfc = Class.forName("sun.jvm.hotspot.debugger.proc." + |
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92 cpu.toLowerCase() + ".Proc" + cpu.toUpperCase() + |
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93 "ThreadFactory"); |
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94 Constructor[] ctfc = tfc.getConstructors(); |
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95 threadFactory = (ProcThreadFactory)ctfc[0].newInstance(this); |
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96 } catch (Exception e) { |
| 0 | 97 throw new RuntimeException("Thread access for CPU architecture " + PlatformInfo.getCPU() + " not yet supported"); |
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98 // Note: pcRegIndex and fpRegIndex do not appear to be referenced |
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99 } |
| 0 | 100 } |
| 101 if (useCache) { | |
| 102 // Cache portion of the remote process's address space. | |
| 103 // For now, this cache works best if it covers the entire | |
| 104 // heap of the remote process. FIXME: at least should make this | |
| 105 // tunable from the outside, i.e., via the UI. This is a 16 MB | |
| 106 // cache divided on SPARC into 2048 8K pages and on x86 into | |
| 107 // 4096 4K pages; the page size must be adjusted to be the OS's | |
| 108 // page size. | |
| 109 | |
| 110 cachePageSize = getPageSize(); | |
| 111 cacheNumPages = parseCacheNumPagesProperty(cacheSize / cachePageSize); | |
| 112 initCache(cachePageSize, cacheNumPages); | |
| 113 } | |
| 114 | |
| 115 resetNativePointers(); | |
| 116 clearCacheFields(); | |
| 117 } | |
| 118 | |
| 119 /** FIXME: implement this with a Runtime.exec() of ps followed by | |
| 120 * parsing of its output */ | |
| 121 public boolean hasProcessList() throws DebuggerException { | |
| 122 return false; | |
| 123 } | |
| 124 | |
| 125 public List getProcessList() throws DebuggerException { | |
| 126 throw new DebuggerException("Not yet supported"); | |
| 127 } | |
| 128 | |
| 129 | |
| 130 /** From the Debugger interface via JVMDebugger */ | |
| 131 public synchronized void attach(int processID) throws DebuggerException { | |
| 132 checkAttached(); | |
| 133 isCore = false; | |
| 134 attach0(new Integer(processID).toString()); | |
| 135 attached = true; | |
| 136 suspended = true; | |
| 137 } | |
| 138 | |
| 139 /** From the Debugger interface via JVMDebugger */ | |
| 140 public synchronized void attach | |
| 141 (String executableName, String coreFileName) throws DebuggerException { | |
| 142 checkAttached(); | |
| 143 isCore = true; | |
| 144 topFrameCache = new HashMap(); | |
| 145 attach0(executableName, coreFileName); | |
| 146 attached = true; | |
| 147 suspended = true; | |
| 148 } | |
| 149 | |
| 150 /** From the Debugger interface via JVMDebugger */ | |
| 151 public synchronized boolean detach() { | |
| 152 if (! attached) { | |
| 153 return false; | |
| 154 } | |
| 155 | |
| 156 try { | |
| 157 if (p_ps_prochandle == 0L) { | |
| 158 return false; | |
| 159 } | |
| 160 detach0(); | |
| 161 clearCache(); | |
| 162 return true; | |
| 163 } catch (Exception e) { | |
| 164 e.printStackTrace(); | |
| 165 return false; | |
| 166 } finally { | |
| 167 resetNativePointers(); | |
| 168 clearCacheFields(); | |
| 169 suspended = false; | |
| 170 attached = false; | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 public synchronized void suspend() throws DebuggerException { | |
| 175 requireAttach(); | |
| 176 if (suspended) { | |
| 177 throw new DebuggerException("Process already suspended"); | |
| 178 } | |
| 179 suspend0(); | |
| 180 suspended = true; | |
| 181 enableCache(); | |
| 182 reresolveLoadObjects(); | |
| 183 } | |
| 184 | |
| 185 public synchronized void resume() throws DebuggerException { | |
| 186 requireAttach(); | |
| 187 if (!suspended) { | |
| 188 throw new DebuggerException("Process not suspended"); | |
| 189 } | |
| 190 resume0(); | |
| 191 disableCache(); | |
| 192 suspended = false; | |
| 193 } | |
| 194 | |
| 195 public synchronized boolean isSuspended() throws DebuggerException { | |
| 196 requireAttach(); | |
| 197 return suspended; | |
| 198 } | |
| 199 | |
| 200 /** From the Debugger interface via JVMDebugger */ | |
| 201 public Address parseAddress(String addressString) throws NumberFormatException { | |
| 202 long addr = utils.scanAddress(addressString); | |
| 203 if (addr == 0) { | |
| 204 return null; | |
| 205 } | |
| 206 return new ProcAddress(this, addr); | |
| 207 } | |
| 208 | |
| 209 /** From the Debugger interface via JVMDebugger */ | |
| 210 public String getOS() { | |
| 211 return PlatformInfo.getOS(); | |
| 212 } | |
| 213 | |
| 214 /** From the Debugger interface via JVMDebugger */ | |
| 215 public String getCPU() { | |
| 216 return PlatformInfo.getCPU(); | |
| 217 } | |
| 218 | |
| 219 public boolean hasConsole() throws DebuggerException { | |
| 220 return false; | |
| 221 } | |
| 222 | |
| 223 public String consoleExecuteCommand(String cmd) throws DebuggerException { | |
| 224 throw new DebuggerException("Can't execute console commands"); | |
| 225 } | |
| 226 | |
| 227 public String getConsolePrompt() throws DebuggerException { | |
| 228 return ""; | |
| 229 } | |
| 230 | |
| 231 public CDebugger getCDebugger() throws DebuggerException { | |
| 232 if (cdbg == null) { | |
| 233 cdbg = new ProcCDebugger(this); | |
| 234 } | |
| 235 return cdbg; | |
| 236 } | |
| 237 | |
| 238 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 239 public synchronized Address lookup(String objectName, String symbol) { | |
| 240 requireAttach(); | |
| 241 long addr = lookupByName0(objectName, symbol); | |
| 242 if (addr == 0) { | |
| 243 return null; | |
| 244 } | |
| 245 return new ProcAddress(this, addr); | |
| 246 } | |
| 247 | |
| 248 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 249 public synchronized OopHandle lookupOop(String objectName, String symbol) { | |
| 250 Address addr = lookup(objectName, symbol); | |
| 251 if (addr == null) { | |
| 252 return null; | |
| 253 } | |
| 254 return addr.addOffsetToAsOopHandle(0); | |
| 255 } | |
| 256 | |
| 257 /** From the ProcDebugger interface */ | |
| 258 public MachineDescription getMachineDescription() { | |
| 259 return machDesc; | |
| 260 } | |
| 261 | |
| 262 /** Internal routine supporting lazy setting of MachineDescription, | |
| 263 * since on SPARC we will need to query the remote process to ask | |
| 264 * it what its data model is (32- or 64-bit). | |
| 265 */ | |
| 266 | |
| 267 public void setMachineDescription(MachineDescription machDesc) { | |
| 268 this.machDesc = machDesc; | |
| 269 setBigEndian(machDesc.isBigEndian()); | |
| 270 utils = new DebuggerUtilities(machDesc.getAddressSize(), machDesc.isBigEndian()); | |
| 271 } | |
| 272 | |
| 273 public synchronized int getRemoteProcessAddressSize() | |
| 274 throws DebuggerException { | |
| 275 requireAttach(); | |
| 276 return getRemoteProcessAddressSize0(); | |
| 277 } | |
| 278 | |
| 279 //-------------------------------------------------------------------------------- | |
| 280 // Implementation of ThreadAccess interface | |
| 281 // | |
| 282 | |
| 283 /** From the ThreadAccess interface via Debugger and JVMDebugger */ | |
| 284 public ThreadProxy getThreadForIdentifierAddress(Address addr) { | |
| 285 return threadFactory.createThreadWrapper(addr); | |
| 286 } | |
| 287 | |
| 288 public ThreadProxy getThreadForThreadId(long id) { | |
| 289 return threadFactory.createThreadWrapper(id); | |
| 290 } | |
| 291 | |
| 292 //---------------------------------------------------------------------- | |
| 293 // Overridden from DebuggerBase because we need to relax alignment | |
| 294 // constraints on x86 | |
| 295 | |
| 296 public long readJLong(long address) | |
| 297 throws UnmappedAddressException, UnalignedAddressException { | |
| 298 checkJavaConfigured(); | |
| 299 // FIXME: allow this to be configurable. Undesirable to add a | |
| 300 // dependency on the runtime package here, though, since this | |
| 301 // package should be strictly underneath it. | |
| 302 if (unalignedAccessesOkay) { | |
| 303 utils.checkAlignment(address, jintSize); | |
| 304 } else { | |
| 305 utils.checkAlignment(address, jlongSize); | |
| 306 } | |
| 307 byte[] data = readBytes(address, jlongSize); | |
| 308 return utils.dataToJLong(data, jlongSize); | |
| 309 } | |
| 310 | |
| 311 //-------------------------------------------------------------------------------- | |
| 312 // Internal routines (for implementation of ProcAddress). | |
| 313 // These must not be called until the MachineDescription has been set up. | |
| 314 // | |
| 315 | |
| 316 /** From the ProcDebugger interface */ | |
| 317 public String addressValueToString(long address) { | |
| 318 return utils.addressValueToString(address); | |
| 319 } | |
| 320 | |
| 321 /** Need to override this to relax alignment checks on Solaris/x86. */ | |
| 322 public long readCInteger(long address, long numBytes, boolean isUnsigned) | |
| 323 throws UnmappedAddressException, UnalignedAddressException { | |
| 324 checkConfigured(); | |
| 325 if (!unalignedAccessesOkay) { | |
| 326 utils.checkAlignment(address, numBytes); | |
| 327 } else { | |
| 328 // Only slightly relaxed semantics -- this is a hack, but is | |
| 329 // necessary on Solaris/x86 where it seems the compiler is | |
| 330 // putting some global 64-bit data on 32-bit boundaries | |
| 331 if (numBytes == 8) { | |
| 332 utils.checkAlignment(address, 4); | |
| 333 } else { | |
| 334 utils.checkAlignment(address, numBytes); | |
| 335 } | |
| 336 } | |
| 337 byte[] data = readBytes(address, numBytes); | |
| 338 return utils.dataToCInteger(data, isUnsigned); | |
| 339 } | |
| 340 | |
| 341 /** From the ProcDebugger interface */ | |
| 342 public ProcAddress readAddress(long address) | |
| 343 throws UnmappedAddressException, UnalignedAddressException { | |
| 344 long value = readAddressValue(address); | |
| 345 return (value == 0 ? null : new ProcAddress(this, value)); | |
| 346 } | |
| 347 | |
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348 public ProcAddress readCompOopAddress(long address) |
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349 throws UnmappedAddressException, UnalignedAddressException { |
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350 long value = readCompOopAddressValue(address); |
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351 return (value == 0 ? null : new ProcAddress(this, value)); |
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352 } |
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353 |
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354 public ProcAddress readCompKlassAddress(long address) |
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355 throws UnmappedAddressException, UnalignedAddressException { |
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356 long value = readCompKlassAddressValue(address); |
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357 return (value == 0 ? null : new ProcAddress(this, value)); |
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358 } |
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359 |
| 0 | 360 /** From the ProcDebugger interface */ |
| 361 public ProcOopHandle readOopHandle(long address) | |
| 362 throws UnmappedAddressException, UnalignedAddressException, NotInHeapException { | |
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363 long value = readAddressValue(address); |
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364 return (value == 0 ? null : new ProcOopHandle(this, value)); |
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365 } |
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366 |
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367 public ProcOopHandle readCompOopHandle(long address) { |
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368 long value = readCompOopAddressValue(address); |
| 0 | 369 return (value == 0 ? null : new ProcOopHandle(this, value)); |
| 370 } | |
| 371 | |
| 372 public void writeBytesToProcess(long address, long numBytes, byte[] data) | |
| 373 throws UnmappedAddressException, DebuggerException { | |
| 374 if (isCore) { | |
| 375 throw new DebuggerException("Attached to a core file!"); | |
| 376 } | |
| 377 writeBytesToProcess0(address, numBytes, data); | |
| 378 } | |
| 379 | |
| 380 public synchronized ReadResult readBytesFromProcess(long address, long numBytes) | |
| 381 throws DebuggerException { | |
| 382 requireAttach(); | |
| 383 byte[] res = readBytesFromProcess0(address, numBytes); | |
| 384 if(res != null) | |
| 385 return new ReadResult(res); | |
| 386 else | |
| 387 return new ReadResult(address); | |
| 388 } | |
| 389 | |
| 390 protected int getPageSize() { | |
| 391 int pagesize = getPageSize0(); | |
| 392 if (pagesize == -1) { | |
| 393 // return the hard coded default value. | |
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394 if (PlatformInfo.getCPU().equals("sparc") || |
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395 PlatformInfo.getCPU().equals("amd64") ) |
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396 pagesize = 8196; |
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397 else |
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398 pagesize = 4096; |
| 0 | 399 } |
| 400 return pagesize; | |
| 401 } | |
| 402 | |
| 403 //-------------------------------------------------------------------------------- | |
| 404 // Thread context access. Can not be package private, but should | |
| 405 // only be accessed by the architecture-specific subpackages. | |
| 406 | |
| 407 /** From the ProcDebugger interface. May have to redefine this later. */ | |
| 408 public synchronized long[] getThreadIntegerRegisterSet(int tid) { | |
| 409 requireAttach(); | |
| 410 return getThreadIntegerRegisterSet0(tid); | |
| 411 } | |
| 412 | |
| 413 //-------------------------------------------------------------------------------- | |
| 414 // Address access. Can not be package private, but should only be | |
| 415 // accessed by the architecture-specific subpackages. | |
| 416 | |
| 417 /** From the ProcDebugger interface */ | |
| 418 public long getAddressValue(Address addr) { | |
| 419 if (addr == null) return 0; | |
| 420 return ((ProcAddress) addr).getValue(); | |
| 421 } | |
| 422 | |
| 423 /** From the ProcDebugger interface */ | |
| 424 public Address newAddress(long value) { | |
| 425 if (value == 0) return null; | |
| 426 return new ProcAddress(this, value); | |
| 427 } | |
| 428 | |
| 429 /** From the ProcDebugger interface */ | |
| 430 public synchronized List getThreadList() throws DebuggerException { | |
| 431 requireAttach(); | |
| 432 List res = null; | |
| 433 if (isCore && (threadListCache != null)) { | |
| 434 res = threadListCache; | |
| 435 } else { | |
| 436 res = new ArrayList(); | |
| 437 fillThreadList0(res); | |
| 438 if (isCore) { | |
| 439 threadListCache = res; | |
| 440 } | |
| 441 } | |
| 442 return res; | |
| 443 } | |
| 444 | |
| 445 /** From the ProcDebugger interface */ | |
| 446 public synchronized List getLoadObjectList() throws DebuggerException { | |
| 447 requireAttach(); | |
| 448 if (!suspended) { | |
| 449 throw new DebuggerException("Process not suspended"); | |
| 450 } | |
| 451 | |
| 452 if (loadObjectCache == null) { | |
| 453 updateLoadObjectCache(); | |
| 454 } | |
| 455 return loadObjectCache; | |
| 456 } | |
| 457 | |
| 458 /** From the ProcDebugger interface */ | |
| 459 public synchronized CFrame topFrameForThread(ThreadProxy thread) | |
| 460 throws DebuggerException { | |
| 461 requireAttach(); | |
| 462 CFrame res = null; | |
| 463 if (isCore && ((res = (CFrame) topFrameCache.get(thread)) != null)) { | |
| 464 return res; | |
| 465 } else { | |
| 466 ThreadContext context = thread.getContext(); | |
| 467 int numRegs = context.getNumRegisters(); | |
| 468 long[] regs = new long[numRegs]; | |
| 469 for (int i = 0; i < numRegs; i++) { | |
| 470 regs[i] = context.getRegister(i); | |
| 471 } | |
| 472 res = fillCFrameList0(regs); | |
| 473 if (isCore) { | |
| 474 topFrameCache.put(thread, res); | |
| 475 } | |
| 476 return res; | |
| 477 } | |
| 478 } | |
| 479 | |
| 480 /** From the ProcDebugger interface */ | |
| 481 public synchronized ClosestSymbol lookup(long address) { | |
| 482 requireAttach(); | |
| 483 return lookupByAddress0(address); | |
| 484 } | |
| 485 | |
| 486 /** From the ProcDebugger interface */ | |
| 487 public String demangle(String name) { | |
| 488 return demangle0(name); | |
| 489 } | |
| 490 | |
| 491 //------------- Internals only below this point -------------------- | |
| 492 // | |
| 493 // | |
| 494 | |
| 495 private void updateLoadObjectCache() { | |
| 496 List res = new ArrayList(); | |
| 497 nameToDsoMap = new HashMap(); | |
| 498 fillLoadObjectList0(res); | |
| 499 loadObjectCache = sortLoadObjects(res); | |
| 500 } | |
| 501 | |
| 502 // sort load objects by base address | |
| 503 private static List sortLoadObjects(List in) { | |
| 504 // sort the list by base address | |
| 505 Object[] arr = in.toArray(); | |
| 506 Arrays.sort(arr, loadObjectComparator); | |
| 507 return Arrays.asList(arr); | |
| 508 } | |
| 509 | |
| 510 private long lookupByName(String objectName, String symbolName) | |
| 511 throws DebuggerException { | |
| 512 // NOTE: this assumes that process is suspended (which is probably | |
| 513 // necessary assumption given that DSOs can be loaded/unloaded as | |
| 514 // process runs). Should update documentation. | |
| 515 if (nameToDsoMap == null) { | |
| 516 getLoadObjectList(); | |
| 517 } | |
| 518 SharedObject dso = (SharedObject) nameToDsoMap.get(objectName); | |
| 519 // The DSO can be null because we use this to search through known | |
| 520 // DSOs in HotSpotTypeDataBase (for example) | |
| 521 if (dso != null) { | |
| 522 ProcAddress addr = (ProcAddress) dso.lookupSymbol(symbolName); | |
| 523 if (addr != null) { | |
| 524 return addr.getValue(); | |
| 525 } | |
| 526 } | |
| 527 return 0; | |
| 528 } | |
| 529 | |
| 530 private SharedObject findDSOByName(String fullPathName) { | |
| 531 if (loadObjectCache == null) | |
| 532 return null; | |
| 533 for (Iterator iter = loadObjectCache.iterator(); iter.hasNext(); ) { | |
| 534 SharedObject dso = (SharedObject) iter.next(); | |
| 535 if (dso.getName().equals(fullPathName)) { | |
| 536 return dso; | |
| 537 } | |
| 538 } | |
| 539 return null; | |
| 540 } | |
| 541 | |
| 542 private void reresolveLoadObjects() throws DebuggerException { | |
| 543 if (loadObjectCache == null) { | |
| 544 return; | |
| 545 } | |
| 546 updateLoadObjectCache(); | |
| 547 } | |
| 548 | |
| 549 | |
| 550 private void checkAttached() { | |
| 551 if (attached) { | |
| 552 if (isCore) { | |
| 553 throw new DebuggerException("already attached to a core file!"); | |
| 554 } else { | |
| 555 throw new DebuggerException("already attached to a process!"); | |
| 556 } | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 private void requireAttach() { | |
| 561 if (! attached) { | |
| 562 throw new RuntimeException("not attached to a process or core file!"); | |
| 563 } | |
| 564 } | |
| 565 | |
| 566 private void clearCacheFields() { | |
| 567 loadObjectCache = null; | |
| 568 nameToDsoMap = null; | |
| 569 threadListCache = null; | |
| 570 topFrameCache = null; | |
| 571 } | |
| 572 | |
| 573 private void resetNativePointers() { | |
| 574 p_ps_prochandle = 0L; | |
| 575 | |
| 576 // reset thread_db pointers | |
| 577 libthread_db_handle = 0L; | |
| 578 p_td_thragent_t = 0L; | |
| 579 p_td_init = 0L; | |
| 580 p_td_ta_new = 0L; | |
| 581 p_td_ta_delete = 0L; | |
| 582 p_td_ta_thr_iter = 0L; | |
| 583 p_td_thr_get_info = 0L; | |
| 584 p_td_ta_map_id2thr = 0L; | |
| 585 p_td_thr_getgregs = 0L; | |
| 586 | |
| 587 // part of class sharing workaround | |
| 588 classes_jsa_fd = -1; | |
| 589 p_file_map_header = 0L; | |
| 590 } | |
| 591 | |
| 592 // native methods and native helpers | |
| 593 | |
| 594 // attach, detach | |
| 595 private native void attach0(String pid) throws DebuggerException; | |
| 596 private native void attach0(String executableFile, String coreFileName) throws DebuggerException; | |
| 597 private native void detach0() throws DebuggerException; | |
| 598 | |
| 599 // address size, page size | |
| 600 private native int getRemoteProcessAddressSize0() throws DebuggerException; | |
| 601 private native int getPageSize0() throws DebuggerException; | |
| 602 | |
| 603 // threads, stacks | |
| 604 private native long[] getThreadIntegerRegisterSet0(long tid) throws DebuggerException; | |
| 605 private native void fillThreadList0(List l) throws DebuggerException; | |
| 606 | |
| 607 // fills stack frame list given reg set of the top frame and top frame | |
| 608 private native ProcCFrame fillCFrameList0(long[] regs) throws DebuggerException; | |
| 609 | |
| 610 // helper called by fillCFrameList0 | |
| 611 private ProcCFrame createSenderFrame(ProcCFrame f, long pc, long fp) { | |
| 612 ProcCFrame sender = new ProcCFrame(this, newAddress(pc), newAddress(fp)); | |
| 613 if (f != null) { | |
| 614 f.setSender(sender); | |
| 615 } | |
| 616 return sender; | |
| 617 } | |
| 618 | |
| 619 // shared objects | |
| 620 private native void fillLoadObjectList0(List l) throws DebuggerException; | |
| 621 | |
| 622 // helper called by fillLoadObjectList0 | |
| 623 private LoadObject createLoadObject(String fileName, long textsize, long base) { | |
| 624 File f = new File(fileName); | |
| 625 Address baseAddr = newAddress(base); | |
| 626 SharedObject res = findDSOByName(fileName); | |
| 627 if (res != null) { | |
| 628 // already in cache. just change the base, if needed | |
| 629 Address oldBase = res.getBase(); | |
| 630 if (! baseAddr.equals(oldBase)) { | |
| 631 res.setBase(baseAddr); | |
| 632 } | |
| 633 } else { | |
| 634 // new shared object. | |
| 635 res = new SharedObject(this, fileName, f.length(), baseAddr); | |
| 636 } | |
| 637 nameToDsoMap.put(f.getName(), res); | |
| 638 return res; | |
| 639 } | |
| 640 | |
| 641 // symbol-to-pc | |
| 642 private native long lookupByName0(String objectName, String symbolName) throws DebuggerException; | |
| 643 private native ClosestSymbol lookupByAddress0(long address) throws DebuggerException; | |
| 644 | |
| 645 // helper called by lookupByAddress0 | |
| 646 private ClosestSymbol createClosestSymbol(String name, long offset) { | |
| 647 return new ClosestSymbol(name, offset); | |
| 648 } | |
| 649 | |
| 650 // process read/write | |
| 651 private native byte[] readBytesFromProcess0(long address, long numBytes) throws DebuggerException; | |
| 652 private native void writeBytesToProcess0(long address, long numBytes, byte[] data) throws DebuggerException; | |
| 653 | |
| 654 // process control | |
| 655 private native void suspend0() throws DebuggerException; | |
| 656 private native void resume0() throws DebuggerException; | |
| 657 | |
| 658 // demangle a C++ name | |
| 659 private native String demangle0(String name); | |
| 660 | |
| 661 // init JNI ids to fields, methods | |
| 662 private native static void initIDs() throws DebuggerException; | |
| 663 private static LoadObjectComparator loadObjectComparator; | |
| 664 | |
| 665 static { | |
| 666 System.loadLibrary("saproc"); | |
| 667 initIDs(); | |
| 668 loadObjectComparator = new LoadObjectComparator(); | |
| 669 } | |
| 670 | |
| 671 private boolean unalignedAccessesOkay; | |
| 672 private ProcThreadFactory threadFactory; | |
| 673 | |
| 674 // indices of PC and FP registers in gregset | |
| 675 private int pcRegIndex; | |
| 676 private int fpRegIndex; | |
| 677 | |
| 678 // Symbol lookup support | |
| 679 // This is a map of library names to DSOs | |
| 680 private Map nameToDsoMap; // Map<String, SharedObject> | |
| 681 | |
| 682 // C/C++ debugging support | |
| 683 private List/*<LoadObject>*/ loadObjects; | |
| 684 private CDebugger cdbg; | |
| 685 | |
| 686 // ProcessControl support | |
| 687 private boolean suspended; | |
| 688 | |
| 689 // libproc handle | |
| 690 private long p_ps_prochandle; | |
| 691 | |
| 692 // libthread.so's dlopen handle, thread agent | |
| 693 // and function pointers | |
| 694 private long libthread_db_handle; | |
| 695 private long p_td_thragent_t; | |
| 696 private long p_td_init; | |
| 697 private long p_td_ta_new; | |
| 698 private long p_td_ta_delete; | |
| 699 private long p_td_ta_thr_iter; | |
| 700 private long p_td_thr_get_info; | |
| 701 private long p_td_ta_map_id2thr; | |
| 702 private long p_td_thr_getgregs; | |
| 703 | |
| 704 // part of class sharing workaround | |
| 705 private int classes_jsa_fd; | |
| 706 private long p_file_map_header; | |
| 707 | |
| 708 private boolean attached = false; | |
| 709 private boolean isCore; | |
| 710 | |
| 711 // for core files, we cache load object list, thread list, top frames etc. | |
| 712 // for processes we cache load object list and sync. it during suspend. | |
| 713 private List threadListCache; | |
| 714 private List loadObjectCache; | |
| 715 private Map topFrameCache; // Map<ThreadProxy, CFrame> | |
| 716 } |