Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/soql/sa.js @ 1040:873ec3787992
6892186: SA does not dump debug info for scalar replaced objects
Summary: Implement scalar replaced objects debug info dump in SA.
Reviewed-by: twisti
| author | kvn |
|---|---|
| date | Wed, 21 Oct 2009 09:15:33 -0700 |
| parents | a61af66fc99e |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved. | |
| 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // shorter names for SA packages | |
| 26 | |
| 27 | |
| 28 // SA package name abbreviations are kept in 'sapkg' object | |
| 29 // to avoid global namespace pollution | |
| 30 var sapkg = new Object(); | |
| 31 | |
| 32 sapkg.hotspot = Packages.sun.jvm.hotspot; | |
| 33 sapkg.asm = sapkg.hotspot.asm; | |
| 34 sapkg.bugspot = sapkg.hotspot.bugspot; | |
| 35 sapkg.c1 = sapkg.hotspot.c1; | |
| 36 sapkg.code = sapkg.hotspot.code; | |
| 37 sapkg.compiler = sapkg.hotspot.compiler; | |
| 38 | |
| 39 // 'debugger' is a JavaScript keyword :-( | |
| 40 // sapkg.debugger = sapkg.hotspot.debugger; | |
| 41 | |
| 42 sapkg.interpreter = sapkg.hotspot.interpreter; | |
| 43 sapkg.livejvm = sapkg.hotspot.livejvm; | |
| 44 sapkg.jdi = sapkg.hotspot.jdi; | |
| 45 sapkg.memory = sapkg.hotspot.memory; | |
| 46 sapkg.oops = sapkg.hotspot.oops; | |
| 47 sapkg.runtime = sapkg.hotspot.runtime; | |
| 48 sapkg.tools = sapkg.hotspot.tools; | |
| 49 sapkg.types = sapkg.hotspot.types; | |
| 50 sapkg.ui = sapkg.hotspot.ui; | |
| 51 sapkg.utilities = sapkg.hotspot.utilities; | |
| 52 | |
| 53 // SA singletons are kept in 'sa' object | |
| 54 var sa = new Object(); | |
| 55 sa.vm = sapkg.runtime.VM.getVM(); | |
| 56 sa.dbg = sa.vm.getDebugger(); | |
| 57 sa.cdbg = sa.dbg.CDebugger; | |
| 58 sa.heap = sa.vm.universe.heap(); | |
| 59 sa.systemDictionary = sa.vm.systemDictionary; | |
| 60 sa.sysDict = sa.systemDictionary; | |
| 61 sa.symbolTable = sa.vm.symbolTable; | |
| 62 sa.symTbl = sa.symbolTable; | |
| 63 sa.threads = sa.vm.threads; | |
| 64 sa.interpreter = sa.vm.interpreter; | |
| 65 sa.typedb = sa.vm.typeDataBase; | |
| 66 sa.codeCache = sa.vm.codeCache; | |
| 67 // 'objHeap' is different from 'heap'!. | |
| 68 // This is SA's Oop factory and heap-walker | |
| 69 sa.objHeap = sa.vm.objectHeap; | |
| 70 | |
| 71 // few useful global variables | |
| 72 var OS = sa.vm.OS; | |
| 73 var CPU = sa.vm.CPU; | |
| 74 var LP64 = sa.vm.LP64; | |
| 75 var isClient = sa.vm.clientCompiler; | |
| 76 var isServer = sa.vm.serverCompiler; | |
| 77 var isCore = sa.vm.isCore(); | |
| 78 var addressSize = sa.vm.addressSize; | |
| 79 var oopSize = sa.vm.oopSize; | |
| 80 | |
| 81 // this "main" function is called immediately | |
| 82 // after loading this script file | |
| 83 function main(globals, jvmarg) { | |
| 84 // wrap a sun.jvm.hotspot.utilities.soql.ScriptObject | |
| 85 // object so that the properties of it can be accessed | |
| 86 // in natural object.field syntax. | |
| 87 function wrapScriptObject(so) { | |
| 88 function unwrapScriptObject(wso) { | |
| 89 var objType = typeof(wso); | |
| 90 if ((objType == 'object' || | |
| 91 objType == 'function') | |
| 92 && "__wrapped__" in wso) { | |
| 93 return wso.__wrapped__; | |
| 94 } else { | |
| 95 return wso; | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 function prepareArgsArray(array) { | |
| 100 var args = new Array(array.length); | |
| 101 for (var a = 0; a < array.length; a++) { | |
| 102 var elem = array[a]; | |
| 103 elem = unwrapScriptObject(elem); | |
| 104 if (typeof(elem) == 'function') { | |
| 105 args[a] = new sapkg.utilities.soql.Callable() { | |
| 106 call: function(myargs) { | |
| 107 var tmp = new Array(myargs.length); | |
| 108 for (var i = 0; i < myargs.length; i++) { | |
| 109 tmp[i] = wrapScriptObject(myargs[i]); | |
| 110 } | |
| 111 return elem.apply(this, tmp); | |
| 112 } | |
| 113 } | |
| 114 } else { | |
| 115 args[a] = elem; | |
| 116 } | |
| 117 } | |
| 118 return args; | |
| 119 } | |
| 120 | |
| 121 if (so instanceof sapkg.utilities.soql.ScriptObject) { | |
| 122 return new JSAdapter() { | |
| 123 __getIds__: function() { | |
| 124 return so.getIds(); | |
| 125 }, | |
| 126 | |
| 127 __has__ : function(name) { | |
| 128 if (typeof(name) == 'number') { | |
| 129 return so["has(int)"](name); | |
| 130 } else { | |
| 131 if (name == '__wrapped__') { | |
| 132 return true; | |
| 133 } else if (so["has(java.lang.String)"](name)) { | |
| 134 return true; | |
| 135 } else if (name.equals('toString')) { | |
| 136 return true; | |
| 137 } else { | |
| 138 return false; | |
| 139 } | |
| 140 } | |
| 141 }, | |
| 142 | |
| 143 __delete__ : function(name) { | |
| 144 if (typeof(name) == 'number') { | |
| 145 return so["delete(int)"](name); | |
| 146 } else { | |
| 147 return so["delete(java.lang.String)"](name); | |
| 148 } | |
| 149 }, | |
| 150 | |
| 151 __get__ : function(name) { | |
| 152 if (! this.__has__(name)) { | |
| 153 return undefined; | |
| 154 } | |
| 155 if (typeof(name) == 'number') { | |
| 156 return wrapScriptObject(so["get(int)"](name)); | |
| 157 } else { | |
| 158 if (name == '__wrapped__') { | |
| 159 return so; | |
| 160 } else { | |
| 161 var value = so["get(java.lang.String)"](name); | |
| 162 if (value instanceof sapkg.utilities.soql.Callable) { | |
| 163 return function() { | |
| 164 var args = prepareArgsArray(arguments); | |
| 165 var r; | |
| 166 try { | |
| 167 r = value.call(args); | |
| 168 } catch (e) { | |
| 169 println("call to " + name + " failed!"); | |
| 170 throw e; | |
| 171 } | |
| 172 return wrapScriptObject(r); | |
| 173 } | |
| 174 } else if (name == 'toString') { | |
| 175 return function() { | |
| 176 return so.toString(); | |
| 177 } | |
| 178 } else { | |
| 179 return wrapScriptObject(value); | |
| 180 } | |
| 181 } | |
| 182 } | |
| 183 } | |
| 184 }; | |
| 185 } else { | |
| 186 return so; | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 // set "jvm" global variable that wraps a | |
| 191 // sun.jvm.hotspot.utilities.soql.JSJavaVM instance | |
| 192 if (jvmarg != null) { | |
| 193 jvm = wrapScriptObject(jvmarg); | |
| 194 // expose "heap" global variable | |
| 195 heap = jvm.heap; | |
| 196 } | |
| 197 | |
| 198 // expose all "function" type properties of | |
| 199 // sun.jvm.hotspot.utilitites.soql.JSJavaScriptEngine | |
| 200 // as global functions here. | |
| 201 globals = wrapScriptObject(globals); | |
| 202 for (var prop in globals) { | |
| 203 if (typeof(globals[prop]) == 'function') { | |
| 204 this[prop] = globals[prop]; | |
| 205 } | |
| 206 } | |
| 207 | |
| 208 // define "writeln" and "write" if not defined | |
| 209 if (typeof(writeln) == 'undefined') { | |
| 210 writeln = println; | |
| 211 } | |
| 212 | |
| 213 if (typeof(write) == 'undefined') { | |
| 214 write = print; | |
| 215 } | |
| 216 | |
| 217 // "registerCommand" function is defined if we | |
| 218 // are running as part of "CLHSDB" tool. CLHSDB | |
| 219 // tool exposes Unix-style commands. | |
| 220 | |
| 221 // if "registerCommand" function is defined | |
| 222 // then register few global functions as "commands". | |
| 223 if (typeof(registerCommand) == 'function') { | |
| 224 this.printDis = function(addr, len) { | |
| 225 if (!addr) { | |
| 226 writeln("Usage: dis address [ length ]"); | |
| 227 } else { | |
| 228 dis(addr, len); | |
| 229 } | |
| 230 } | |
| 231 registerCommand("dis", "dis address [ length ]", "printDis"); | |
| 232 | |
| 233 this.jclass = function(name) { | |
| 234 if (typeof(name) == "string") { | |
| 235 var clazz = sapkg.utilities.SystemDictionaryHelper.findInstanceKlass(name); | |
| 236 if (clazz) { | |
| 237 writeln(clazz.getName().asString() + " @" + clazz.getHandle().toString()); | |
| 238 } else { | |
| 239 writeln("class not found: " + name); | |
| 240 } | |
| 241 } else { | |
| 242 writeln("Usage: class name"); | |
| 243 } | |
| 244 } | |
| 245 registerCommand("class", "class name", "jclass"); | |
| 246 | |
| 247 this.jclasses = function() { | |
| 248 forEachKlass(function (clazz) { | |
| 249 writeln(clazz.getName().asString() + " @" + clazz.getHandle().toString()); | |
| 250 }); | |
| 251 } | |
| 252 registerCommand("classes", "classes", "jclasses"); | |
| 253 | |
| 254 this.printJDis = function(addr) { | |
| 255 if (!addr) { | |
| 256 writeln("Usage: jdis address"); | |
| 257 } else { | |
| 258 jdis(addr); | |
| 259 } | |
| 260 } | |
| 261 registerCommand("jdis", "jdis address", "printJDis"); | |
| 262 | |
| 263 this.dclass = function(clazz, dir) { | |
| 264 if (!clazz) { | |
| 265 writeln("Usage: dumpclass { address | name } [ directory ]"); | |
| 266 } else { | |
| 267 if (!dir) { dir = "."; } | |
| 268 dumpClass(clazz, dir); | |
| 269 } | |
| 270 } | |
| 271 registerCommand("dumpclass", "dumpclass { address | name } [ directory ]", "dclass"); | |
| 272 registerCommand("dumpheap", "dumpheap [ file ]", "dumpHeap"); | |
| 273 | |
| 274 this.jseval = function(str) { | |
| 275 if (!str) { | |
| 276 writeln("Usage: jseval script"); | |
| 277 } else { | |
| 278 var res = eval(str); | |
| 279 if (res) { writeln(res); } | |
| 280 } | |
| 281 } | |
| 282 registerCommand("jseval", "jseval script", "jseval"); | |
| 283 | |
| 284 this.jsload = function(file) { | |
| 285 if (!file) { | |
| 286 writeln("Usage: jsload file"); | |
| 287 } else { | |
| 288 load(file); | |
| 289 } | |
| 290 } | |
| 291 registerCommand("jsload", "jsload file", "jsload"); | |
| 292 | |
| 293 this.printMem = function(addr, len) { | |
| 294 if (!addr) { | |
| 295 writeln("Usage: mem [ length ]"); | |
| 296 } else { | |
| 297 mem(addr, len); | |
| 298 } | |
| 299 } | |
| 300 registerCommand("mem", "mem address [ length ]", "printMem"); | |
| 301 | |
| 302 this.sysProps = function() { | |
| 303 for (var i in jvm.sysProps) { | |
| 304 writeln(i + ' = ' + jvm.sysProps[i]); | |
| 305 } | |
| 306 } | |
| 307 registerCommand("sysprops", "sysprops", "sysProps"); | |
| 308 | |
| 309 this.printWhatis = function(addr) { | |
| 310 if (!addr) { | |
| 311 writeln("Usage: whatis address"); | |
| 312 } else { | |
| 313 writeln(whatis(addr)); | |
| 314 } | |
| 315 } | |
| 316 registerCommand("whatis", "whatis address", "printWhatis"); | |
| 317 } | |
| 318 } | |
| 319 | |
| 320 // debugger functionality | |
| 321 | |
| 322 // string-to-Address | |
| 323 function str2addr(str) { | |
| 324 return sa.dbg.parseAddress(str); | |
| 325 } | |
| 326 | |
| 327 // number-to-Address | |
| 328 if (addressSize == 4) { | |
| 329 eval("function num2addr(num) { \ | |
| 330 return str2addr('0x' + java.lang.Integer.toHexString(0xffffffff & num)); \ | |
| 331 }"); | |
| 332 } else { | |
| 333 eval("function num2addr(num) { \ | |
| 334 return str2addr('0x' + java.lang.Long.toHexString(num)); \ | |
| 335 }"); | |
| 336 } | |
| 337 | |
| 338 // generic any-type-to-Address | |
| 339 // use this convenience function to accept address in any | |
| 340 // format -- number, string or an Address instance. | |
| 341 function any2addr(addr) { | |
| 342 var type = typeof(addr); | |
| 343 if (type == 'number') { | |
| 344 return num2addr(addr); | |
| 345 } else if (type == 'string') { | |
| 346 return str2addr(addr); | |
| 347 } else { | |
| 348 return addr; | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 // Address-to-string | |
| 353 function addr2str(addr) { | |
| 354 if (addr == null) { | |
| 355 return (addressSize == 4)? '0x00000000' : '0x0000000000000000'; | |
| 356 } else { | |
| 357 return addr + ''; | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 // Address-to-number | |
| 362 function addr2num(addr) { | |
| 363 return sa.dbg.getAddressValue(addr); | |
| 364 } | |
| 365 | |
| 366 // symbol-to-Address | |
| 367 function sym2addr(dso, sym) { | |
| 368 return sa.dbg.lookup(dso, sym); | |
| 369 } | |
| 370 | |
| 371 // returns the ClosestSymbol or null | |
| 372 function closestSymbolFor(addr) { | |
| 373 if (sa.cdbg == null) { | |
| 374 // no CDebugger support, return null | |
| 375 return null; | |
| 376 } else { | |
| 377 var dso = sa.cdbg.loadObjectContainingPC(addr); | |
| 378 if (dso != null) { | |
| 379 return dso.closestSymbolToPC(addr); | |
| 380 } else { | |
| 381 return null; | |
| 382 } | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 // Address-to-symbol | |
| 387 // returns nearest symbol as string if found | |
| 388 // else returns address as string | |
| 389 function addr2sym(addr) { | |
| 390 var sym = closestSymbolFor(addr); | |
| 391 if (sym != null) { | |
| 392 return sym.name + '+' + sym.offset; | |
| 393 } else { | |
| 394 return addr2str(addr); | |
| 395 } | |
| 396 } | |
| 397 | |
| 398 // read 'num' bytes at 'addr' and return an array as result. | |
| 399 // returns Java byte[] type result and not a JavaScript array. | |
| 400 function readBytesAt(addr, num) { | |
| 401 addr = any2addr(addr); | |
| 402 var res = java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, num); | |
| 403 var i; | |
| 404 for (i = 0; i < num; i++) { | |
| 405 res[i] = addr.getJByteAt(i); | |
| 406 } | |
| 407 return res; | |
| 408 } | |
| 409 | |
| 410 // read 'num' words at 'addr' and return an array as result. | |
| 411 // returns Java long[] type result and not a JavaScript array. | |
| 412 function readWordsAt(addr, num) { | |
| 413 addr = any2addr(addr); | |
| 414 var res = java.lang.reflect.Array.newInstance(java.lang.Long.TYPE, num); | |
| 415 var i; | |
| 416 for (i = 0; i < num; i++) { | |
| 417 res[i] = addr2num(addr.getAddressAt(i * addressSize)); | |
| 418 } | |
| 419 return res; | |
| 420 } | |
| 421 | |
| 422 // read the 'C' string at 'addr' | |
| 423 function readCStrAt(addr) { | |
| 424 addr = any2addr(addr); | |
| 425 return sapkg.utilities.CStringUtilities.getString(addr); | |
| 426 } | |
| 427 | |
| 428 // read the length of the 'C' string at 'addr' | |
| 429 function readCStrLen(addr) { | |
| 430 addr = any2addr(addr); | |
| 431 return sapkg.utilities.CStringUtilities.getStringLength(addr); | |
| 432 } | |
| 433 | |
| 434 // iterate through ThreadList of CDebugger | |
| 435 function forEachThread(callback) { | |
| 436 if (sa.cdbg == null) { | |
| 437 // no CDebugger support | |
| 438 return; | |
| 439 } else { | |
| 440 var itr = sa.cdbg.threadList.iterator(); | |
| 441 while (itr.hasNext()) { | |
| 442 if (callback(itr.next()) == false) return; | |
| 443 } | |
| 444 } | |
| 445 } | |
| 446 | |
| 447 // read register set of a ThreadProxy as name-value pairs | |
| 448 function readRegs(threadProxy) { | |
| 449 var ctx = threadProxy.context; | |
| 450 var num = ctx.numRegisters; | |
| 451 var res = new Object(); | |
| 452 var i; | |
| 453 for (i = 0; i < num; i++) { | |
| 454 res[ctx.getRegisterName(i)]= addr2str(ctx.getRegisterAsAddress(i)); | |
| 455 } | |
| 456 return res; | |
| 457 } | |
| 458 | |
| 459 // print register set for a given ThreaProxy | |
| 460 function regs(threadProxy) { | |
| 461 var res = readRegs(threadProxy); | |
| 462 for (i in res) { | |
| 463 writeln(i, '=', res[i]); | |
| 464 } | |
| 465 } | |
| 466 | |
| 467 // iterate through each CFrame of a given ThreadProxy | |
| 468 function forEachCFrame(threadProxy, callback) { | |
| 469 if (sa.cdbg == null) { | |
| 470 // no CDebugger support | |
| 471 return; | |
| 472 } else { | |
| 473 var cframe = sa.cdbg.topFrameForThread(threadProxy); | |
| 474 while (cframe != null) { | |
| 475 if (callback(cframe) == false) return; | |
| 476 cframe = cframe.sender(); | |
| 477 } | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 // iterate through list of load objects (DLLs, DSOs) | |
| 482 function forEachLoadObject(callback) { | |
| 483 if (sa.cdbg == null) { | |
| 484 // no CDebugger support | |
| 485 return; | |
| 486 } else { | |
| 487 var itr = sa.cdbg.loadObjectList.iterator(); | |
| 488 while (itr.hasNext()) { | |
| 489 if (callback(itr.next()) == false) return; | |
| 490 } | |
| 491 } | |
| 492 } | |
| 493 | |
| 494 // print 'num' words at 'addr' | |
| 495 function mem(addr, num) { | |
| 496 if (num == undefined) { | |
| 497 num = 1; | |
| 498 } | |
| 499 addr = any2addr(addr); | |
| 500 var i; | |
| 501 for (i = 0; i < num; i++) { | |
| 502 var value = addr.getAddressAt(0); | |
| 503 writeln(addr2sym(addr) + ':', addr2str(value)); | |
| 504 addr = addr.addOffsetTo(addressSize); | |
| 505 } | |
| 506 writeln(); | |
| 507 } | |
| 508 | |
| 509 // return the disassemble class for current CPU | |
| 510 function disassemblerClass() { | |
| 511 var DisAsmClass; | |
| 512 if (CPU == 'x86') { | |
| 513 DisAsmClass = sapkg.asm.x86.X86Disassembler; | |
| 514 } else if (CPU == 'sparc') { | |
| 515 DisAsmClass = sapkg.asm.sparc.SPARCV9Disassembler; | |
| 516 } | |
| 517 return DisAsmClass; | |
| 518 } | |
| 519 | |
| 520 // print native code disassembly of 'num' bytes at 'addr' | |
| 521 function dis(addr, num) { | |
| 522 addr = any2addr(addr); | |
| 523 var nmethod = findNMethod(addr); | |
| 524 if (nmethod != null) { | |
| 525 // disassemble it as nmethod | |
| 526 nmethoddis(nmethod); | |
| 527 } else { | |
| 528 // raw disassembly | |
| 529 if (num == undefined) { | |
| 530 // size of one SPARC instruction and | |
| 531 // unknown number of Intel instructions. | |
| 532 num = 4; | |
| 533 } | |
| 534 DisAsmClass = disassemblerClass(); | |
| 535 if (DisAsmClass == undefined) { | |
| 536 // unsupported CPU | |
| 537 writeln(CPU + " is not yet supported!"); | |
| 538 return; | |
| 539 } | |
| 540 | |
| 541 var bytes = readBytesAt(addr, num); | |
| 542 var disAsm = new DisAsmClass(addr2num(addr), bytes); | |
| 543 disAsm.decode(new sapkg.asm.InstructionVisitor() { | |
| 544 visit: function (pc, instr) { | |
| 545 write(addr2sym(num2addr(pc)) + ':', '\t'); | |
| 546 writeln(instr.asString(pc, | |
| 547 new sapkg.asm.SymbolFinder() { | |
| 548 getSymbolFor: function(addr) { | |
| 549 return addr2sym(num2addr(addr)); | |
| 550 } | |
| 551 })); | |
| 552 } | |
| 553 }); | |
| 554 } | |
| 555 } | |
| 556 | |
| 557 // System dictionary functions | |
| 558 | |
| 559 // find InstanceKlass by name | |
| 560 function findInstanceKlass(name) { | |
| 561 return sapkg.utilities.SystemDictionaryHelper.findInstanceKlass(name); | |
| 562 } | |
| 563 | |
| 564 // get Java system loader (i.e., application launcher loader) | |
| 565 function systemLoader() { | |
| 566 return sa.sysDict.javaSystemLoader(); | |
| 567 } | |
| 568 | |
| 569 // iterate system dictionary for each 'Klass' | |
| 570 function forEachKlass(callback) { | |
| 571 var VisitorClass = sapkg.memory.SystemDictionary.ClassVisitor; | |
| 572 var visitor = new VisitorClass() { visit: callback }; | |
| 573 sa.sysDict["classesDo(sun.jvm.hotspot.memory.SystemDictionary$ClassVisitor)"](visitor); | |
| 574 } | |
| 575 | |
| 576 // iterate system dictionary for each 'Klass' and initiating loader | |
| 577 function forEachKlassAndLoader(callback) { | |
| 578 var VisitorClass = sapkg.memory.SystemDictionary.ClassAndLoaderVisitor; | |
| 579 var visitor = new VisitorClass() { visit: callback }; | |
| 580 sa.sysDict["classesDo(sun.jvm.hotspot.memory.SystemDictionary$ClassAndLoaderVisitor)"](visitor); | |
| 581 } | |
| 582 | |
| 583 // iterate system dictionary for each primitive array klass | |
| 584 function forEachPrimArrayKlass(callback) { | |
| 585 var VisitorClass = sapkg.memory.SystemDictionary.ClassAndLoaderVisitor; | |
| 586 sa.sysDict.primArrayClassesDo(new VisitorClass() { visit: callback }); | |
| 587 } | |
| 588 | |
| 589 // (hotspot) symbol table functions | |
| 590 | |
| 591 // String-to-Symbol | |
| 592 function str2sym(str) { | |
| 593 return sa.symTbl.probe(str); | |
| 594 } | |
| 595 | |
| 596 // Symbol-to-String | |
| 597 function sym2str(sym) { | |
| 598 return sym.asString(); | |
| 599 } | |
| 600 | |
| 601 // oop functions | |
| 602 | |
| 603 // Address-to-Oop | |
| 604 function addr2oop(addr) { | |
| 605 addr = any2addr(addr); | |
| 606 return sa.objHeap.newOop(addr.addOffsetToAsOopHandle(0)); | |
| 607 } | |
| 608 | |
| 609 // Oop-to-Address | |
| 610 function oop2addr(oop) { | |
| 611 return oop.handle; | |
| 612 } | |
| 613 | |
| 614 // 'oop' to higher-level java object wrapper in which for(i in o) | |
| 615 // works by iterating java level fields and javaobject.javafield | |
| 616 // syntax works. | |
| 617 function oop2obj(oop) { | |
| 618 return object(addr2str(oop.handle)); | |
| 619 } | |
| 620 | |
| 621 // higher level java object wrapper to oop | |
| 622 function obj2oop(obj) { | |
| 623 return addr2oop(str2addr(address(obj))); | |
| 624 } | |
| 625 | |
| 626 // Java heap iteration | |
| 627 | |
| 628 // iterates Java heap for each Oop | |
| 629 function forEachOop(callback) { | |
| 630 sa.objHeap.iterate(new sapkg.oops.HeapVisitor() { doObj: callback }); | |
| 631 } | |
| 632 | |
| 633 // iterates Java heap for each Oop of given 'klass'. | |
| 634 // 'includeSubtypes' tells whether to include objects | |
| 635 // of subtypes of 'klass' or not | |
| 636 function forEachOopOfKlass(callback, klass, includeSubtypes) { | |
| 637 if (klass == undefined) { | |
| 638 klass = findInstanceKlass("java.lang.Object"); | |
| 639 } | |
| 640 | |
| 641 if (includeSubtypes == undefined) { | |
| 642 includeSubtypes = true; | |
| 643 } | |
| 644 sa.objHeap.iterateObjectsOfKlass( | |
| 645 new sapkg.oops.HeapVisitor() { doObj: callback }, | |
| 646 klass, includeSubtypes); | |
| 647 } | |
| 648 | |
| 649 // code cache functions | |
| 650 | |
| 651 // iterates CodeCache for each 'CodeBlob' | |
| 652 function forEachCodeBlob(callback) { | |
| 653 var VisitorClass = sapkg.code.CodeCacheVisitor; | |
| 654 sa.codeCache.iterate(new VisitorClass() { visit: callback }); | |
| 655 } | |
| 656 | |
| 657 // find the ClodBlob (if any) that contains given address | |
| 658 function findCodeBlob(addr) { | |
| 659 addr = any2addr(addr); | |
| 660 return sa.codeCache.findBlobUnsafe(addr); | |
| 661 } | |
| 662 | |
| 663 // find the NMethod (if any) that contains given address | |
| 664 function findNMethod(addr) { | |
| 665 var codeBlob = findCodeBlob(addr); | |
| 666 return (codeBlob != null && codeBlob.isNMethod())? codeBlob : null; | |
| 667 } | |
| 668 | |
| 669 // returns PcDesc at given address or null | |
| 670 function pcDescAt(addr) { | |
| 671 addr = any2addr(addr); | |
| 672 var nmethod = findNMethod(addr); | |
| 673 return (nmethod != null)? nmethod.safepoints.get(addr) : null; | |
| 674 } | |
| 675 | |
| 676 // helpers for nmethod disassembler | |
| 677 function printScope(scopeDesc) { | |
| 678 if (scopeDesc == null) { | |
| 679 return; | |
| 680 } | |
| 681 printScope(scopeDesc.sender()); | |
| 682 var method = scopeDesc.method; | |
| 683 var bci = scopeDesc.BCI; | |
| 684 var line = -1; | |
| 685 if (method.hasLineNumberTable()) { | |
| 686 line = method.getLineNumberFromBCI(bci); | |
| 687 } | |
| 688 | |
| 689 write('\t', method.externalNameAndSignature(), '@', method.handle, 'bci=' + bci); | |
| 690 if (line != -1) { | |
| 691 write('line=' + line); | |
| 692 } | |
| 693 writeln(); | |
| 694 } | |
| 695 | |
| 696 function printSafepointInfo(nmethod, pcDesc) { | |
| 697 var scopeDesc = nmethod.getScopeDescAt( | |
| 698 pcDesc.getRealPC(nmethod), | |
| 699 pcDesc.isAtCall()); | |
| 700 printScope(scopeDesc); | |
| 701 } | |
| 702 | |
| 703 // print disassembly for a given nmethod | |
| 704 function nmethoddis(nmethod) { | |
| 705 var DisAsmClass = disassemblerClass(); | |
| 706 if (DisAsmClass == undefined) { | |
| 707 writeln(CPU + " is not yet supported!"); | |
| 708 return; | |
| 709 } | |
| 710 | |
| 711 var method = nmethod.method; | |
| 712 writeln('NMethod:', method.externalNameAndSignature(), '@', method.handle); | |
| 713 | |
| 714 var codeBegin = nmethod.codeBegin(); | |
| 715 var codeEnd = nmethod.codeEnd(); | |
| 716 var size = codeEnd.minus(codeBegin); | |
| 717 var code = readBytesAt(codeBegin, size); | |
| 718 var startPc = addr2num(codeBegin); | |
| 719 var verifiedEntryPoint = addr2num(nmethod.verifiedEntryPoint); | |
| 720 var entryPoint = addr2num(nmethod.entryPoint); | |
| 721 var interpreterEntryPoint = addr2num(nmethod.interpreterEntryPointOrNull); | |
| 722 var safepoints = nmethod.safepoints; | |
| 723 var disAsm = new DisAsmClass(startPc, code); | |
| 724 disAsm.decode(new sapkg.asm.InstructionVisitor() { | |
| 725 visit: function(curPc, instr) { | |
| 726 if (curPc == verifiedEntryPoint) { | |
| 727 writeln(); | |
| 728 writeln("Verified Entry Point:"); | |
| 729 } | |
| 730 if (curPc == entryPoint) { | |
| 731 writeln(); | |
| 732 writeln("Entry Point:"); | |
| 733 } | |
| 734 if (curPc == interpreterEntryPoint) { | |
| 735 writeln(""); | |
| 736 writeln("Interpreter Entry Point:"); | |
| 737 } | |
| 738 | |
| 739 var pcDesc = safepoints.get(num2addr(curPc)); | |
| 740 var isSafepoint = (pcDesc != null); | |
| 741 if (isSafepoint && pcDesc.isAtCall()) { | |
| 742 printSafepointInfo(nmethod, pcDesc); | |
| 743 } | |
| 744 | |
| 745 write(num2addr(curPc) + ':', '\t'); | |
| 746 writeln(instr.asString(curPc, | |
| 747 new sapkg.asm.SymbolFinder() { | |
| 748 getSymbolFor: function(addr) { | |
| 749 return addr2sym(num2addr(addr)); | |
| 750 } | |
| 751 })); | |
| 752 | |
| 753 if (isSafepoint && !pcDesc.isAtCall()) { | |
| 754 printSafepointInfo(nmethod, pcDesc); | |
| 755 } | |
| 756 } | |
| 757 }); | |
| 758 } | |
| 759 | |
| 760 // bytecode interpreter functions | |
| 761 | |
| 762 // iterates interpreter codelets for each interpreter codelet | |
| 763 function forEachInterpCodelet(callback) { | |
| 764 var stubQueue = sa.interpreter.code; | |
| 765 var stub = stubQueue.first; | |
| 766 while (stub != null) { | |
| 767 if (callback(stub) == false) return; | |
| 768 stub = stubQueue.getNext(stub); | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 // helper for bytecode disassembler | |
| 773 function printExceptionTable(method) { | |
| 774 var expTbl = method.getExceptionTable(); | |
| 775 var len = expTbl.getLength(); | |
| 776 if (len != 0) { | |
| 777 var i; | |
| 778 var cpool = method.constants; | |
| 779 writeln("start", '\t', "end", '\t', "handler", '\t', "exception"); | |
| 780 writeln(""); | |
| 781 for (i = 0; i < len; i += 4) { | |
| 782 write(expTbl.getIntAt(i), '\t', | |
| 783 expTbl.getIntAt(i + 1), '\t', | |
| 784 expTbl.getIntAt(i + 2), '\t'); | |
| 785 var cpIndex = expTbl.getIntAt(i + 3); | |
| 786 var oop = (cpIndex == 0)? null : cpool.getObjAt(cpIndex); | |
| 787 if (oop == null) { | |
| 788 writeln("<any>"); | |
| 789 } else if (oop.isSymbol()) { | |
| 790 writeln(oop.asString().replace('/', '.')); | |
| 791 } else if (oop.isKlass()) { | |
| 792 writeln(oop.name.asString().replace('/', '.')); | |
| 793 } else { | |
| 794 writeln(cpIndex); | |
| 795 } | |
| 796 } | |
| 797 } | |
| 798 } | |
| 799 | |
| 800 // print Java bytecode disassembly | |
| 801 function jdis(method) { | |
| 802 if (method.getByteCode == undefined) { | |
| 803 // method oop may be specified by address | |
| 804 method = addr2oop(any2addr(method)); | |
| 805 } | |
| 806 writeln(method, '-', method.externalNameAndSignature()); | |
| 807 if (method.isNative()) { | |
| 808 writeln("native method"); | |
| 809 return; | |
| 810 } | |
| 811 if (method.isAbstract()) { | |
| 812 writeln("abstract method"); | |
| 813 return; | |
| 814 } | |
| 815 | |
| 816 writeln(); | |
| 817 var BytecodeDisAsmClass = sapkg.interpreter.BytecodeDisassembler; | |
| 818 var disAsm = new BytecodeDisAsmClass(method); | |
| 819 var bci = 0; | |
| 820 var hasLines = method.hasLineNumberTable(); | |
| 821 if (hasLines) { | |
| 822 writeln("bci", '\t', "line", '\t', "instruction"); | |
| 823 } else { | |
| 824 writeln("bci", '\t', "instruction"); | |
| 825 } | |
| 826 writeln(""); | |
| 827 disAsm.decode(new sapkg.interpreter.BytecodeVisitor() { | |
| 828 visit: function(bytecode) { | |
| 829 if (hasLines) { | |
| 830 var line = method.getLineNumberFromBCI(bci); | |
| 831 writeln(bci, '\t', line, '\t', bytecode); | |
| 832 } else { | |
| 833 writeln(bci, '\t', bytecode); | |
| 834 } | |
| 835 bci++; | |
| 836 } | |
| 837 }); | |
| 838 | |
| 839 writeln(); | |
| 840 printExceptionTable(method); | |
| 841 } | |
| 842 | |
| 843 // Java thread | |
| 844 | |
| 845 // iterates each Thread | |
| 846 function forEachJavaThread(callback) { | |
| 847 var threads = sa.threads; | |
| 848 var thread = threads.first(); | |
| 849 while (thread != null) { | |
| 850 if (callback(thread) == false) return; | |
| 851 thread = thread.next(); | |
| 852 } | |
| 853 } | |
| 854 | |
| 855 // iterate Frames of a given thread | |
| 856 function forEachFrame(javaThread, callback) { | |
| 857 var fr = javaThread.getLastFrameDbg(); | |
| 858 while (fr != null) { | |
| 859 if (callback(fr) == false) return; | |
| 860 fr = fr.sender(); | |
| 861 } | |
| 862 } | |
| 863 | |
| 864 // iterate JavaVFrames of a given JavaThread | |
| 865 function forEachVFrame(javaThread, callback) { | |
| 866 var vfr = javaThread.getLastJavaVFrameDbg(); | |
| 867 while (vfr != null) { | |
| 868 if (callback(vfr) == false) return; | |
| 869 vfr = vfr.javaSender(); | |
| 870 } | |
| 871 } | |
| 872 | |
| 873 function printStackTrace(javaThread) { | |
| 874 write("Thread "); | |
| 875 javaThread.printThreadIDOn(java.lang.System.out); | |
| 876 writeln(); | |
| 877 forEachVFrame(javaThread, function (vf) { | |
| 878 var method = vf.method; | |
| 879 write(' - ', method.externalNameAndSignature(), '@bci =', vf.getBCI()); | |
| 880 var line = method.getLineNumberFromBCI(vf.getBCI()); | |
| 881 if (line != -1) { write(', line=', line); } | |
| 882 if (vf.isCompiledFrame()) { write(" (Compiled Frame)"); } | |
| 883 if (vf.isInterpretedFrame()) { write(" (Interpreted Frame)"); } | |
| 884 writeln(); | |
| 885 }); | |
| 886 writeln(); | |
| 887 writeln(); | |
| 888 } | |
| 889 | |
| 890 // print Java stack trace for all threads | |
| 891 function where(javaThread) { | |
| 892 if (javaThread == undefined) { | |
| 893 forEachJavaThread(function (jt) { printStackTrace(jt); }); | |
| 894 } else { | |
| 895 printStackTrace(javaThread); | |
| 896 } | |
| 897 } | |
| 898 | |
| 899 // vmStructs access -- type database functions | |
| 900 | |
| 901 // find a VM type | |
| 902 function findVMType(typeName) { | |
| 903 return sa.typedb.lookupType(typeName); | |
| 904 } | |
| 905 | |
| 906 // iterate VM types | |
| 907 function forEachVMType(callback) { | |
| 908 var itr = sa.typedb.types; | |
| 909 while (itr.hasNext()) { | |
| 910 if (callback(itr.next()) == false) return; | |
| 911 } | |
| 912 } | |
| 913 | |
| 914 // find VM int constant | |
| 915 function findVMIntConst(name) { | |
| 916 return sa.typedb.lookupIntConstant(name); | |
| 917 } | |
| 918 | |
| 919 // find VM long constant | |
| 920 function findVMLongConst(name) { | |
| 921 return sa.typedb.lookupLongConstant(name); | |
| 922 } | |
| 923 | |
| 924 // iterate VM int constants | |
| 925 function forEachVMIntConst(callback) { | |
| 926 var itr = sa.typedb.intConstants; | |
| 927 while (itr.hasNext()) { | |
| 928 if (callback(itr.next()) == false) return; | |
| 929 } | |
| 930 } | |
| 931 | |
| 932 // iterate VM long constants | |
| 933 function forEachVMLongConst(callback) { | |
| 934 var itr = sa.typedb.longConstants; | |
| 935 while (itr.hasNext()) { | |
| 936 if (callback(itr.next()) == false) return; | |
| 937 } | |
| 938 } | |
| 939 | |
| 940 // returns VM Type at address | |
| 941 function vmTypeof(addr) { | |
| 942 addr = any2addr(addr); | |
| 943 return sa.typedb.guessTypeForAddress(addr); | |
| 944 } | |
| 945 | |
| 946 // does the given 'addr' points to an object of given 'type'? | |
| 947 // OR any valid Type at all (if type is undefined) | |
| 948 function isOfVMType(addr, type) { | |
| 949 addr = any2addr(addr); | |
| 950 if (type == undefined) { | |
| 951 return vmTypeof(addr) != null; | |
| 952 } else { | |
| 953 if (typeof(type) == 'string') { | |
| 954 type = findVMType(type); | |
| 955 } | |
| 956 return sa.typedb.addressTypeIsEqualToType(addr, type); | |
| 957 } | |
| 958 } | |
| 959 | |
| 960 // reads static field value | |
| 961 function readVMStaticField(field) { | |
| 962 var type = field.type; | |
| 963 if (type.isCIntegerType() || type.isJavaPrimitiveType()) { | |
| 964 return field.value; | |
| 965 } else if (type.isPointerType()) { | |
| 966 return field.address; | |
| 967 } else if (type.isOopType()) { | |
| 968 return field.oopHandle; | |
| 969 } else { | |
| 970 return field.staticFieldAddress; | |
| 971 } | |
| 972 } | |
| 973 | |
| 974 // reads given instance field of VM object at 'addr' | |
| 975 function readVMInstanceField(field, addr) { | |
| 976 var type = field.type; | |
| 977 if (type.isCIntegerType() || type.isJavaPrimitiveType()) { | |
| 978 return field.getValue(addr); | |
| 979 } else if (type.isPointerType()) { | |
| 980 return field.getAddress(addr); | |
| 981 } else if (type.isOopType()) { | |
| 982 return field.getOopHandle(addr); | |
| 983 } else { | |
| 984 return addr.addOffsetTo(field.offset); | |
| 985 } | |
| 986 } | |
| 987 | |
| 988 // returns name-value of pairs of VM type at given address. | |
| 989 // If address is unspecified, reads static fields as name-value pairs. | |
| 990 function readVMType(type, addr) { | |
| 991 if (typeof(type) == 'string') { | |
| 992 type = findVMType(type); | |
| 993 } | |
| 994 if (addr != undefined) { | |
| 995 addr = any2addr(addr); | |
| 996 } | |
| 997 | |
| 998 var result = new Object(); | |
| 999 var staticOnly = (addr == undefined); | |
| 1000 while (type != null) { | |
| 1001 var itr = type.fields; | |
| 1002 while (itr.hasNext()) { | |
| 1003 var field = itr.next(); | |
| 1004 var isStatic = field.isStatic(); | |
| 1005 if (staticOnly && isStatic) { | |
| 1006 result[field.name] = readVMStaticField(field); | |
| 1007 } else if (!staticOnly && !isStatic) { | |
| 1008 result[field.name] = readVMInstanceField(field, addr); | |
| 1009 } | |
| 1010 } | |
| 1011 type = type.superclass; | |
| 1012 } | |
| 1013 return result; | |
| 1014 } | |
| 1015 | |
| 1016 function printVMType(type, addr) { | |
| 1017 if (typeof(type) == 'string') { | |
| 1018 type = findVMType(type); | |
| 1019 } | |
| 1020 var obj = readVMType(type, addr); | |
| 1021 while (type != null) { | |
| 1022 var itr = type.fields; | |
| 1023 while (itr.hasNext()) { | |
| 1024 var field = itr.next(); | |
| 1025 var name = field.name; | |
| 1026 var value = obj[name]; | |
| 1027 if (value != undefined) { | |
| 1028 writeln(field.type.name, type.name + '::' + name, '=', value); | |
| 1029 } | |
| 1030 } | |
| 1031 type = type.superclass; | |
| 1032 } | |
| 1033 } | |
| 1034 | |
| 1035 // define readXXX and printXXX functions for each VM struct/class Type | |
| 1036 tmp = new Object(); | |
| 1037 tmp.itr = sa.typedb.types; | |
| 1038 while (tmp.itr.hasNext()) { | |
| 1039 tmp.type = tmp.itr.next(); | |
| 1040 tmp.name = tmp.type.name; | |
| 1041 if (tmp.type.isPointerType() || tmp.type.isOopType() || | |
| 1042 tmp.type.isCIntegerType() || tmp.type.isJavaPrimitiveType() || | |
| 1043 tmp.name.equals('address') || | |
| 1044 tmp.name.equals("<opaque>")) { | |
| 1045 // ignore; | |
| 1046 continue; | |
| 1047 } else { | |
| 1048 // some type names have ':'. replace to make it as a | |
| 1049 // JavaScript identifier | |
|
1040
873ec3787992
6892186: SA does not dump debug info for scalar replaced objects
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changeset
|
1050 tmp.name = tmp.name.replace(':', '_').replace('<', '_').replace('>', '_').replace('*', '_').replace(' ', '_'); |
| 0 | 1051 eval("function read" + tmp.name + "(addr) {" + |
| 1052 " return readVMType('" + tmp.name + "', addr);}"); | |
| 1053 eval("function print" + tmp.name + "(addr) {" + | |
| 1054 " printVMType('" + tmp.name + "', addr); }"); | |
| 1055 | |
| 1056 /* FIXME: do we need this? | |
| 1057 if (typeof(registerCommand) != 'undefined') { | |
| 1058 var name = "print" + tmp.name; | |
| 1059 registerCommand(name, name + " [address]", name); | |
| 1060 } | |
| 1061 */ | |
| 1062 } | |
| 1063 } | |
| 1064 //clean-up the temporary | |
| 1065 delete tmp; | |
| 1066 | |
| 1067 // VMObject factory | |
| 1068 | |
| 1069 // VM type to SA class map | |
| 1070 var vmType2Class = new Object(); | |
| 1071 | |
| 1072 // This is *not* exhaustive. Add more if needed. | |
| 1073 // code blobs | |
| 1074 vmType2Class["BufferBlob"] = sapkg.code.BufferBlob; | |
| 1075 vmType2Class["nmethod"] = sapkg.code.NMethod; | |
| 1076 vmType2Class["RuntimeStub"] = sapkg.code.RuntimeStub; | |
| 1077 vmType2Class["SafepointBlob"] = sapkg.code.SafepointBlob; | |
| 1078 vmType2Class["C2IAdapter"] = sapkg.code.C2IAdapter; | |
| 1079 vmType2Class["DeoptimizationBlob"] = sapkg.code.DeoptimizationBlob; | |
| 1080 vmType2Class["ExceptionBlob"] = sapkg.code.ExceptionBlob; | |
| 1081 vmType2Class["I2CAdapter"] = sapkg.code.I2CAdapter; | |
| 1082 vmType2Class["OSRAdapter"] = sapkg.code.OSRAdapter; | |
| 1083 vmType2Class["UncommonTrapBlob"] = sapkg.code.UncommonTrapBlob; | |
| 1084 vmType2Class["PCDesc"] = sapkg.code.PCDesc; | |
| 1085 | |
| 1086 // interpreter | |
| 1087 vmType2Class["InterpreterCodelet"] = sapkg.interpreter.InterpreterCodelet; | |
| 1088 | |
| 1089 // Java Threads | |
| 1090 vmType2Class["JavaThread"] = sapkg.runtime.JavaThread; | |
| 1091 vmType2Class["CompilerThread"] = sapkg.runtime.CompilerThread; | |
| 1092 vmType2Class["SurrogateLockerThread"] = sapkg.runtime.JavaThread; | |
| 1093 vmType2Class["DebuggerThread"] = sapkg.runtime.DebuggerThread; | |
| 1094 | |
| 1095 // gc | |
| 1096 vmType2Class["GenCollectedHeap"] = sapkg.memory.GenCollectedHeap; | |
| 1097 vmType2Class["CompactingPermGenGen"] = sapkg.memory.CompactingPermGenGen; | |
| 1098 vmType2Class["DefNewGeneration"] = sapkg.memory.DefNewGeneration; | |
| 1099 vmType2Class["TenuredGeneration"] = sapkg.memory.TenuredGeneration; | |
| 1100 | |
| 1101 // generic VMObject factory for a given address | |
| 1102 // This is equivalent to VirtualConstructor. | |
| 1103 function newVMObject(addr) { | |
| 1104 addr = any2addr(addr); | |
| 1105 var result = null; | |
| 1106 forEachVMType(function (type) { | |
| 1107 if (isOfVMType(addr, type)) { | |
| 1108 var clazz = vmType2Class[type.name]; | |
| 1109 if (clazz != undefined) { | |
| 1110 result = new clazz(addr); | |
| 1111 } | |
| 1112 return false; | |
| 1113 } else { | |
| 1114 return true; | |
| 1115 } | |
| 1116 }); | |
| 1117 return result; | |
| 1118 } | |
| 1119 | |
| 1120 function vmobj2addr(vmobj) { | |
| 1121 return vmobj.address; | |
| 1122 } | |
| 1123 | |
| 1124 function addr2vmobj(addr) { | |
| 1125 return newVMObject(addr); | |
| 1126 } | |
| 1127 | |
| 1128 // Miscellaneous utilities | |
| 1129 | |
| 1130 // returns PointerLocation that describes the given pointer | |
| 1131 function findPtr(addr) { | |
| 1132 addr = any2addr(addr); | |
| 1133 return sapkg.utilities.PointerFinder.find(addr); | |
| 1134 } | |
| 1135 | |
| 1136 // is given address a valid Oop? | |
| 1137 function isOop(addr) { | |
| 1138 addr = any2addr(addr); | |
| 1139 var oopHandle = addr.addOffsetToAsOopHandle(0); | |
| 1140 return sapkg.utilities.RobustOopDeterminator.oopLooksValid(oopHandle); | |
| 1141 } | |
| 1142 | |
| 1143 // returns description of given pointer as a String | |
| 1144 function whatis(addr) { | |
| 1145 addr = any2addr(addr); | |
| 1146 var ptrLoc = findPtr(addr); | |
| 1147 if (ptrLoc.isUnknown()) { | |
| 1148 var vmType = vmTypeof(addr); | |
| 1149 if (vmType != null) { | |
| 1150 return "pointer to " + vmType.name; | |
| 1151 } else { | |
| 1152 var sym = closestSymbolFor(addr); | |
| 1153 if (sym != null) { | |
| 1154 return sym.name + '+' + sym.offset; | |
| 1155 } else { | |
| 1156 return ptrLoc.toString(); | |
| 1157 } | |
| 1158 } | |
| 1159 } else { | |
| 1160 return ptrLoc.toString(); | |
| 1161 } | |
| 1162 } |