1 /* 2 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "jvm.h" 27 #include "ci/ciMethodData.hpp" 28 #include "ci/ciReplay.hpp" 29 #include "ci/ciSymbol.hpp" 30 #include "ci/ciKlass.hpp" 31 #include "ci/ciUtilities.hpp" 32 #include "compiler/compileBroker.hpp" 33 #include "memory/allocation.inline.hpp" 34 #include "memory/oopFactory.hpp" 35 #include "memory/resourceArea.hpp" 36 #include "oops/method.inline.hpp" 37 #include "oops/oop.inline.hpp" 38 #include "utilities/copy.hpp" 39 #include "utilities/macros.hpp" 40 41 #ifndef PRODUCT 42 43 // ciReplay 44 45 typedef struct _ciMethodDataRecord { 46 const char* _klass_name; 47 const char* _method_name; 48 const char* _signature; 49 50 int _state; 51 int _current_mileage; 52 53 intptr_t* _data; 54 char* _orig_data; 55 Klass** _classes; 56 Method** _methods; 57 int* _classes_offsets; 58 int* _methods_offsets; 59 int _data_length; 60 int _orig_data_length; 61 int _classes_length; 62 int _methods_length; 63 } ciMethodDataRecord; 64 65 typedef struct _ciMethodRecord { 66 const char* _klass_name; 67 const char* _method_name; 68 const char* _signature; 69 70 int _instructions_size; 71 int _interpreter_invocation_count; 72 int _interpreter_throwout_count; 73 int _invocation_counter; 74 int _backedge_counter; 75 } ciMethodRecord; 76 77 typedef struct _ciInlineRecord { 78 const char* _klass_name; 79 const char* _method_name; 80 const char* _signature; 81 82 int _inline_depth; 83 int _inline_bci; 84 } ciInlineRecord; 85 86 class CompileReplay; 87 static CompileReplay* replay_state; 88 89 class CompileReplay : public StackObj { 90 private: 91 FILE* _stream; 92 Thread* _thread; 93 Handle _protection_domain; 94 Handle _loader; 95 96 GrowableArray<ciMethodRecord*> _ci_method_records; 97 GrowableArray<ciMethodDataRecord*> _ci_method_data_records; 98 99 // Use pointer because we may need to return inline records 100 // without destroying them. 101 GrowableArray<ciInlineRecord*>* _ci_inline_records; 102 103 const char* _error_message; 104 105 char* _bufptr; 106 char* _buffer; 107 int _buffer_length; 108 int _buffer_pos; 109 110 // "compile" data 111 ciKlass* _iklass; 112 Method* _imethod; 113 int _entry_bci; 114 int _comp_level; 115 116 public: 117 CompileReplay(const char* filename, TRAPS) { 118 _thread = THREAD; 119 _loader = Handle(_thread, SystemDictionary::java_system_loader()); 120 _protection_domain = Handle(); 121 122 _stream = fopen(filename, "rt"); 123 if (_stream == NULL) { 124 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename); 125 } 126 127 _ci_inline_records = NULL; 128 _error_message = NULL; 129 130 _buffer_length = 32; 131 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length); 132 _bufptr = _buffer; 133 _buffer_pos = 0; 134 135 _imethod = NULL; 136 _iklass = NULL; 137 _entry_bci = 0; 138 _comp_level = 0; 139 140 test(); 141 } 142 143 ~CompileReplay() { 144 if (_stream != NULL) fclose(_stream); 145 } 146 147 void test() { 148 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\""); 149 _bufptr = _buffer; 150 assert(parse_int("test") == 1, "what"); 151 assert(parse_int("test") == 2, "what"); 152 assert(strcmp(parse_string(), "foo") == 0, "what"); 153 assert(parse_int("test") == 4, "what"); 154 assert(strcmp(parse_string(), "bar") == 0, "what"); 155 assert(parse_intptr_t("test") == 9, "what"); 156 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what"); 157 } 158 159 bool had_error() { 160 return _error_message != NULL || _thread->has_pending_exception(); 161 } 162 163 bool can_replay() { 164 return !(_stream == NULL || had_error()); 165 } 166 167 void report_error(const char* msg) { 168 _error_message = msg; 169 // Restore the _buffer contents for error reporting 170 for (int i = 0; i < _buffer_pos; i++) { 171 if (_buffer[i] == '\0') _buffer[i] = ' '; 172 } 173 } 174 175 int parse_int(const char* label) { 176 if (had_error()) { 177 return 0; 178 } 179 180 int v = 0; 181 int read; 182 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) { 183 report_error(label); 184 } else { 185 _bufptr += read; 186 } 187 return v; 188 } 189 190 intptr_t parse_intptr_t(const char* label) { 191 if (had_error()) { 192 return 0; 193 } 194 195 intptr_t v = 0; 196 int read; 197 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) { 198 report_error(label); 199 } else { 200 _bufptr += read; 201 } 202 return v; 203 } 204 205 void skip_ws() { 206 // Skip any leading whitespace 207 while (*_bufptr == ' ' || *_bufptr == '\t') { 208 _bufptr++; 209 } 210 } 211 212 213 char* scan_and_terminate(char delim) { 214 char* str = _bufptr; 215 while (*_bufptr != delim && *_bufptr != '\0') { 216 _bufptr++; 217 } 218 if (*_bufptr != '\0') { 219 *_bufptr++ = '\0'; 220 } 221 if (_bufptr == str) { 222 // nothing here 223 return NULL; 224 } 225 return str; 226 } 227 228 char* parse_string() { 229 if (had_error()) return NULL; 230 231 skip_ws(); 232 return scan_and_terminate(' '); 233 } 234 235 char* parse_quoted_string() { 236 if (had_error()) return NULL; 237 238 skip_ws(); 239 240 if (*_bufptr == '"') { 241 _bufptr++; 242 return scan_and_terminate('"'); 243 } else { 244 return scan_and_terminate(' '); 245 } 246 } 247 248 const char* parse_escaped_string() { 249 char* result = parse_quoted_string(); 250 if (result != NULL) { 251 unescape_string(result); 252 } 253 return result; 254 } 255 256 // Look for the tag 'tag' followed by an 257 bool parse_tag_and_count(const char* tag, int& length) { 258 const char* t = parse_string(); 259 if (t == NULL) { 260 return false; 261 } 262 263 if (strcmp(tag, t) != 0) { 264 report_error(tag); 265 return false; 266 } 267 length = parse_int("parse_tag_and_count"); 268 return !had_error(); 269 } 270 271 // Parse a sequence of raw data encoded as bytes and return the 272 // resulting data. 273 char* parse_data(const char* tag, int& length) { 274 if (!parse_tag_and_count(tag, length)) { 275 return NULL; 276 } 277 278 char * result = NEW_RESOURCE_ARRAY(char, length); 279 for (int i = 0; i < length; i++) { 280 int val = parse_int("data"); 281 result[i] = val; 282 } 283 return result; 284 } 285 286 // Parse a standard chunk of data emitted as: 287 // 'tag' <length> # # ... 288 // Where each # is an intptr_t item 289 intptr_t* parse_intptr_data(const char* tag, int& length) { 290 if (!parse_tag_and_count(tag, length)) { 291 return NULL; 292 } 293 294 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length); 295 for (int i = 0; i < length; i++) { 296 skip_ws(); 297 intptr_t val = parse_intptr_t("data"); 298 result[i] = val; 299 } 300 return result; 301 } 302 303 // Parse a possibly quoted version of a symbol into a symbolOop 304 Symbol* parse_symbol(TRAPS) { 305 const char* str = parse_escaped_string(); 306 if (str != NULL) { 307 Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL); 308 return sym; 309 } 310 return NULL; 311 } 312 313 // Parse a valid klass name and look it up 314 Klass* parse_klass(TRAPS) { 315 const char* str = parse_escaped_string(); 316 Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL); 317 if (klass_name != NULL) { 318 Klass* k = NULL; 319 if (_iklass != NULL) { 320 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding(); 321 } else { 322 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 323 } 324 if (HAS_PENDING_EXCEPTION) { 325 oop throwable = PENDING_EXCEPTION; 326 java_lang_Throwable::print(throwable, tty); 327 tty->cr(); 328 report_error(str); 329 if (ReplayIgnoreInitErrors) { 330 CLEAR_PENDING_EXCEPTION; 331 _error_message = NULL; 332 } 333 return NULL; 334 } 335 return k; 336 } 337 return NULL; 338 } 339 340 // Lookup a klass 341 Klass* resolve_klass(const char* klass, TRAPS) { 342 Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL); 343 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 344 } 345 346 // Parse the standard tuple of <klass> <name> <signature> 347 Method* parse_method(TRAPS) { 348 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL); 349 if (k == NULL) { 350 report_error("Can't find holder klass"); 351 return NULL; 352 } 353 Symbol* method_name = parse_symbol(CHECK_NULL); 354 Symbol* method_signature = parse_symbol(CHECK_NULL); 355 Method* m = k->find_method(method_name, method_signature); 356 if (m == NULL) { 357 report_error("Can't find method"); 358 } 359 return m; 360 } 361 362 int get_line(int c) { 363 while(c != EOF) { 364 if (_buffer_pos + 1 >= _buffer_length) { 365 int new_length = _buffer_length * 2; 366 // Next call will throw error in case of OOM. 367 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length); 368 _buffer_length = new_length; 369 } 370 if (c == '\n') { 371 c = getc(_stream); // get next char 372 break; 373 } else if (c == '\r') { 374 // skip LF 375 } else { 376 _buffer[_buffer_pos++] = c; 377 } 378 c = getc(_stream); 379 } 380 // null terminate it, reset the pointer 381 _buffer[_buffer_pos] = '\0'; // NL or EOF 382 _buffer_pos = 0; 383 _bufptr = _buffer; 384 return c; 385 } 386 387 // Process each line of the replay file executing each command until 388 // the file ends. 389 void process(TRAPS) { 390 int line_no = 1; 391 int c = getc(_stream); 392 while(c != EOF) { 393 c = get_line(c); 394 process_command(THREAD); 395 if (had_error()) { 396 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message); 397 if (ReplayIgnoreInitErrors) { 398 CLEAR_PENDING_EXCEPTION; 399 _error_message = NULL; 400 } else { 401 return; 402 } 403 } 404 line_no++; 405 } 406 } 407 408 void process_command(TRAPS) { 409 char* cmd = parse_string(); 410 if (cmd == NULL) { 411 return; 412 } 413 if (strcmp("#", cmd) == 0) { 414 // ignore 415 } else if (strcmp("compile", cmd) == 0) { 416 process_compile(CHECK); 417 } else if (strcmp("ciMethod", cmd) == 0) { 418 process_ciMethod(CHECK); 419 } else if (strcmp("ciMethodData", cmd) == 0) { 420 process_ciMethodData(CHECK); 421 } else if (strcmp("staticfield", cmd) == 0) { 422 process_staticfield(CHECK); 423 } else if (strcmp("ciInstanceKlass", cmd) == 0) { 424 process_ciInstanceKlass(CHECK); 425 } else if (strcmp("instanceKlass", cmd) == 0) { 426 process_instanceKlass(CHECK); 427 #if INCLUDE_JVMTI 428 } else if (strcmp("JvmtiExport", cmd) == 0) { 429 process_JvmtiExport(CHECK); 430 #endif // INCLUDE_JVMTI 431 } else { 432 report_error("unknown command"); 433 } 434 } 435 436 // validation of comp_level 437 bool is_valid_comp_level(int comp_level) { 438 const int msg_len = 256; 439 char* msg = NULL; 440 if (!is_compile(comp_level)) { 441 msg = NEW_RESOURCE_ARRAY(char, msg_len); 442 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level); 443 } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) { 444 msg = NEW_RESOURCE_ARRAY(char, msg_len); 445 switch (comp_level) { 446 case CompLevel_simple: 447 jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level); 448 break; 449 case CompLevel_full_optimization: 450 jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level); 451 break; 452 default: 453 jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level); 454 } 455 } 456 if (msg != NULL) { 457 report_error(msg); 458 return false; 459 } 460 return true; 461 } 462 463 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ... 464 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) { 465 _imethod = m; 466 _iklass = imethod->holder(); 467 _entry_bci = entry_bci; 468 _comp_level = comp_level; 469 int line_no = 1; 470 int c = getc(_stream); 471 while(c != EOF) { 472 c = get_line(c); 473 // Expecting only lines with "compile" command in inline replay file. 474 char* cmd = parse_string(); 475 if (cmd == NULL || strcmp("compile", cmd) != 0) { 476 return NULL; 477 } 478 process_compile(CHECK_NULL); 479 if (had_error()) { 480 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message); 481 tty->print_cr("%s", _buffer); 482 return NULL; 483 } 484 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) { 485 // Found inlining record for the requested method. 486 return _ci_inline_records; 487 } 488 line_no++; 489 } 490 return NULL; 491 } 492 493 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ... 494 void process_compile(TRAPS) { 495 Method* method = parse_method(CHECK); 496 if (had_error()) return; 497 int entry_bci = parse_int("entry_bci"); 498 const char* comp_level_label = "comp_level"; 499 int comp_level = parse_int(comp_level_label); 500 // old version w/o comp_level 501 if (had_error() && (error_message() == comp_level_label)) { 502 // use highest available tier 503 comp_level = TieredCompilation ? TieredStopAtLevel : CompLevel_highest_tier; 504 } 505 if (!is_valid_comp_level(comp_level)) { 506 return; 507 } 508 if (_imethod != NULL) { 509 // Replay Inlining 510 if (entry_bci != _entry_bci || comp_level != _comp_level) { 511 return; 512 } 513 const char* iklass_name = _imethod->method_holder()->name()->as_utf8(); 514 const char* imethod_name = _imethod->name()->as_utf8(); 515 const char* isignature = _imethod->signature()->as_utf8(); 516 const char* klass_name = method->method_holder()->name()->as_utf8(); 517 const char* method_name = method->name()->as_utf8(); 518 const char* signature = method->signature()->as_utf8(); 519 if (strcmp(iklass_name, klass_name) != 0 || 520 strcmp(imethod_name, method_name) != 0 || 521 strcmp(isignature, signature) != 0) { 522 return; 523 } 524 } 525 int inline_count = 0; 526 if (parse_tag_and_count("inline", inline_count)) { 527 // Record inlining data 528 _ci_inline_records = new GrowableArray<ciInlineRecord*>(); 529 for (int i = 0; i < inline_count; i++) { 530 int depth = parse_int("inline_depth"); 531 int bci = parse_int("inline_bci"); 532 if (had_error()) { 533 break; 534 } 535 Method* inl_method = parse_method(CHECK); 536 if (had_error()) { 537 break; 538 } 539 new_ciInlineRecord(inl_method, bci, depth); 540 } 541 } 542 if (_imethod != NULL) { 543 return; // Replay Inlining 544 } 545 InstanceKlass* ik = method->method_holder(); 546 ik->initialize(THREAD); 547 if (HAS_PENDING_EXCEPTION) { 548 oop throwable = PENDING_EXCEPTION; 549 java_lang_Throwable::print(throwable, tty); 550 tty->cr(); 551 if (ReplayIgnoreInitErrors) { 552 CLEAR_PENDING_EXCEPTION; 553 ik->set_init_state(InstanceKlass::fully_initialized); 554 } else { 555 return; 556 } 557 } 558 // Make sure the existence of a prior compile doesn't stop this one 559 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code(); 560 if (nm != NULL) { 561 nm->make_not_entrant(); 562 } 563 replay_state = this; 564 CompileBroker::compile_method(method, entry_bci, comp_level, 565 methodHandle(), 0, CompileTask::Reason_Replay, THREAD); 566 replay_state = NULL; 567 reset(); 568 } 569 570 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size> 571 // 572 // 573 void process_ciMethod(TRAPS) { 574 Method* method = parse_method(CHECK); 575 if (had_error()) return; 576 ciMethodRecord* rec = new_ciMethod(method); 577 rec->_invocation_counter = parse_int("invocation_counter"); 578 rec->_backedge_counter = parse_int("backedge_counter"); 579 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count"); 580 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count"); 581 rec->_instructions_size = parse_int("instructions_size"); 582 } 583 584 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> # ... methods <length> 585 void process_ciMethodData(TRAPS) { 586 Method* method = parse_method(CHECK); 587 if (had_error()) return; 588 /* just copied from Method, to build interpret data*/ 589 590 // To be properly initialized, some profiling in the MDO needs the 591 // method to be rewritten (number of arguments at a call for 592 // instance) 593 method->method_holder()->link_class(CHECK); 594 // methodOopDesc::build_interpreter_method_data(method, CHECK); 595 { 596 // Grab a lock here to prevent multiple 597 // MethodData*s from being created. 598 MutexLocker ml(MethodData_lock, THREAD); 599 if (method->method_data() == NULL) { 600 ClassLoaderData* loader_data = method->method_holder()->class_loader_data(); 601 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK); 602 method->set_method_data(method_data); 603 } 604 } 605 606 // collect and record all the needed information for later 607 ciMethodDataRecord* rec = new_ciMethodData(method); 608 rec->_state = parse_int("state"); 609 rec->_current_mileage = parse_int("current_mileage"); 610 611 rec->_orig_data = parse_data("orig", rec->_orig_data_length); 612 if (rec->_orig_data == NULL) { 613 return; 614 } 615 rec->_data = parse_intptr_data("data", rec->_data_length); 616 if (rec->_data == NULL) { 617 return; 618 } 619 if (!parse_tag_and_count("oops", rec->_classes_length)) { 620 return; 621 } 622 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length); 623 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length); 624 for (int i = 0; i < rec->_classes_length; i++) { 625 int offset = parse_int("offset"); 626 if (had_error()) { 627 return; 628 } 629 Klass* k = parse_klass(CHECK); 630 rec->_classes_offsets[i] = offset; 631 rec->_classes[i] = k; 632 } 633 634 if (!parse_tag_and_count("methods", rec->_methods_length)) { 635 return; 636 } 637 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length); 638 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length); 639 for (int i = 0; i < rec->_methods_length; i++) { 640 int offset = parse_int("offset"); 641 if (had_error()) { 642 return; 643 } 644 Method* m = parse_method(CHECK); 645 rec->_methods_offsets[i] = offset; 646 rec->_methods[i] = m; 647 } 648 } 649 650 // instanceKlass <name> 651 // 652 // Loads and initializes the klass 'name'. This can be used to 653 // create particular class loading environments 654 void process_instanceKlass(TRAPS) { 655 // just load the referenced class 656 Klass* k = parse_klass(CHECK); 657 } 658 659 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ... 660 // 661 // Load the klass 'name' and link or initialize it. Verify that the 662 // constant pool is the same length as 'length' and make sure the 663 // constant pool tags are in the same state. 664 void process_ciInstanceKlass(TRAPS) { 665 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 666 if (k == NULL) { 667 return; 668 } 669 int is_linked = parse_int("is_linked"); 670 int is_initialized = parse_int("is_initialized"); 671 int length = parse_int("length"); 672 if (is_initialized) { 673 k->initialize(THREAD); 674 if (HAS_PENDING_EXCEPTION) { 675 oop throwable = PENDING_EXCEPTION; 676 java_lang_Throwable::print(throwable, tty); 677 tty->cr(); 678 if (ReplayIgnoreInitErrors) { 679 CLEAR_PENDING_EXCEPTION; 680 k->set_init_state(InstanceKlass::fully_initialized); 681 } else { 682 return; 683 } 684 } 685 } else if (is_linked) { 686 k->link_class(CHECK); 687 } 688 ConstantPool* cp = k->constants(); 689 if (length != cp->length()) { 690 report_error("constant pool length mismatch: wrong class files?"); 691 return; 692 } 693 694 int parsed_two_word = 0; 695 for (int i = 1; i < length; i++) { 696 int tag = parse_int("tag"); 697 if (had_error()) { 698 return; 699 } 700 switch (cp->tag_at(i).value()) { 701 case JVM_CONSTANT_UnresolvedClass: { 702 if (tag == JVM_CONSTANT_Class) { 703 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i); 704 Klass* k = cp->klass_at(i, CHECK); 705 } 706 break; 707 } 708 case JVM_CONSTANT_Long: 709 case JVM_CONSTANT_Double: 710 parsed_two_word = i + 1; 711 712 case JVM_CONSTANT_ClassIndex: 713 case JVM_CONSTANT_StringIndex: 714 case JVM_CONSTANT_String: 715 case JVM_CONSTANT_UnresolvedClassInError: 716 case JVM_CONSTANT_Fieldref: 717 case JVM_CONSTANT_Methodref: 718 case JVM_CONSTANT_InterfaceMethodref: 719 case JVM_CONSTANT_NameAndType: 720 case JVM_CONSTANT_Utf8: 721 case JVM_CONSTANT_Integer: 722 case JVM_CONSTANT_Float: 723 case JVM_CONSTANT_MethodHandle: 724 case JVM_CONSTANT_MethodType: 725 case JVM_CONSTANT_Dynamic: 726 case JVM_CONSTANT_InvokeDynamic: 727 if (tag != cp->tag_at(i).value()) { 728 report_error("tag mismatch: wrong class files?"); 729 return; 730 } 731 break; 732 733 case JVM_CONSTANT_Class: 734 if (tag == JVM_CONSTANT_Class) { 735 } else if (tag == JVM_CONSTANT_UnresolvedClass) { 736 tty->print_cr("Warning: entry was unresolved in the replay data"); 737 } else { 738 report_error("Unexpected tag"); 739 return; 740 } 741 break; 742 743 case 0: 744 if (parsed_two_word == i) continue; 745 746 default: 747 fatal("Unexpected tag: %d", cp->tag_at(i).value()); 748 break; 749 } 750 751 } 752 } 753 754 // Initialize a class and fill in the value for a static field. 755 // This is useful when the compile was dependent on the value of 756 // static fields but it's impossible to properly rerun the static 757 // initiailizer. 758 void process_staticfield(TRAPS) { 759 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 760 761 if (k == NULL || ReplaySuppressInitializers == 0 || 762 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) { 763 return; 764 } 765 766 assert(k->is_initialized(), "must be"); 767 768 const char* field_name = parse_escaped_string(); 769 const char* field_signature = parse_string(); 770 fieldDescriptor fd; 771 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK); 772 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 773 if (!k->find_local_field(name, sig, &fd) || 774 !fd.is_static() || 775 fd.has_initial_value()) { 776 report_error(field_name); 777 return; 778 } 779 780 oop java_mirror = k->java_mirror(); 781 if (field_signature[0] == '[') { 782 int length = parse_int("array length"); 783 oop value = NULL; 784 785 if (field_signature[1] == '[') { 786 // multi dimensional array 787 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK); 788 if (kelem == NULL) { 789 return; 790 } 791 int rank = 0; 792 while (field_signature[rank] == '[') { 793 rank++; 794 } 795 jint* dims = NEW_RESOURCE_ARRAY(jint, rank); 796 dims[0] = length; 797 for (int i = 1; i < rank; i++) { 798 dims[i] = 1; // These aren't relevant to the compiler 799 } 800 value = kelem->multi_allocate(rank, dims, CHECK); 801 } else { 802 if (strcmp(field_signature, "[B") == 0) { 803 value = oopFactory::new_byteArray(length, CHECK); 804 } else if (strcmp(field_signature, "[Z") == 0) { 805 value = oopFactory::new_boolArray(length, CHECK); 806 } else if (strcmp(field_signature, "[C") == 0) { 807 value = oopFactory::new_charArray(length, CHECK); 808 } else if (strcmp(field_signature, "[S") == 0) { 809 value = oopFactory::new_shortArray(length, CHECK); 810 } else if (strcmp(field_signature, "[F") == 0) { 811 value = oopFactory::new_singleArray(length, CHECK); 812 } else if (strcmp(field_signature, "[D") == 0) { 813 value = oopFactory::new_doubleArray(length, CHECK); 814 } else if (strcmp(field_signature, "[I") == 0) { 815 value = oopFactory::new_intArray(length, CHECK); 816 } else if (strcmp(field_signature, "[J") == 0) { 817 value = oopFactory::new_longArray(length, CHECK); 818 } else if (field_signature[0] == '[' && field_signature[1] == 'L') { 819 Klass* kelem = resolve_klass(field_signature + 1, CHECK); 820 value = oopFactory::new_objArray(kelem, length, CHECK); 821 } else { 822 report_error("unhandled array staticfield"); 823 } 824 } 825 java_mirror->obj_field_put(fd.offset(), value); 826 } else { 827 const char* string_value = parse_escaped_string(); 828 if (strcmp(field_signature, "I") == 0) { 829 int value = atoi(string_value); 830 java_mirror->int_field_put(fd.offset(), value); 831 } else if (strcmp(field_signature, "B") == 0) { 832 int value = atoi(string_value); 833 java_mirror->byte_field_put(fd.offset(), value); 834 } else if (strcmp(field_signature, "C") == 0) { 835 int value = atoi(string_value); 836 java_mirror->char_field_put(fd.offset(), value); 837 } else if (strcmp(field_signature, "S") == 0) { 838 int value = atoi(string_value); 839 java_mirror->short_field_put(fd.offset(), value); 840 } else if (strcmp(field_signature, "Z") == 0) { 841 int value = atoi(string_value); 842 java_mirror->bool_field_put(fd.offset(), value); 843 } else if (strcmp(field_signature, "J") == 0) { 844 jlong value; 845 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) { 846 fprintf(stderr, "Error parsing long: %s\n", string_value); 847 return; 848 } 849 java_mirror->long_field_put(fd.offset(), value); 850 } else if (strcmp(field_signature, "F") == 0) { 851 float value = atof(string_value); 852 java_mirror->float_field_put(fd.offset(), value); 853 } else if (strcmp(field_signature, "D") == 0) { 854 double value = atof(string_value); 855 java_mirror->double_field_put(fd.offset(), value); 856 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) { 857 Handle value = java_lang_String::create_from_str(string_value, CHECK); 858 java_mirror->obj_field_put(fd.offset(), value()); 859 } else if (field_signature[0] == 'L') { 860 Klass* k = resolve_klass(string_value, CHECK); 861 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK); 862 java_mirror->obj_field_put(fd.offset(), value); 863 } else { 864 report_error("unhandled staticfield"); 865 } 866 } 867 } 868 869 #if INCLUDE_JVMTI 870 void process_JvmtiExport(TRAPS) { 871 const char* field = parse_string(); 872 bool value = parse_int("JvmtiExport flag") != 0; 873 if (strcmp(field, "can_access_local_variables") == 0) { 874 JvmtiExport::set_can_access_local_variables(value); 875 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) { 876 JvmtiExport::set_can_hotswap_or_post_breakpoint(value); 877 } else if (strcmp(field, "can_post_on_exceptions") == 0) { 878 JvmtiExport::set_can_post_on_exceptions(value); 879 } else { 880 report_error("Unrecognized JvmtiExport directive"); 881 } 882 } 883 #endif // INCLUDE_JVMTI 884 885 // Create and initialize a record for a ciMethod 886 ciMethodRecord* new_ciMethod(Method* method) { 887 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord); 888 rec->_klass_name = method->method_holder()->name()->as_utf8(); 889 rec->_method_name = method->name()->as_utf8(); 890 rec->_signature = method->signature()->as_utf8(); 891 _ci_method_records.append(rec); 892 return rec; 893 } 894 895 // Lookup data for a ciMethod 896 ciMethodRecord* find_ciMethodRecord(Method* method) { 897 const char* klass_name = method->method_holder()->name()->as_utf8(); 898 const char* method_name = method->name()->as_utf8(); 899 const char* signature = method->signature()->as_utf8(); 900 for (int i = 0; i < _ci_method_records.length(); i++) { 901 ciMethodRecord* rec = _ci_method_records.at(i); 902 if (strcmp(rec->_klass_name, klass_name) == 0 && 903 strcmp(rec->_method_name, method_name) == 0 && 904 strcmp(rec->_signature, signature) == 0) { 905 return rec; 906 } 907 } 908 return NULL; 909 } 910 911 // Create and initialize a record for a ciMethodData 912 ciMethodDataRecord* new_ciMethodData(Method* method) { 913 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord); 914 rec->_klass_name = method->method_holder()->name()->as_utf8(); 915 rec->_method_name = method->name()->as_utf8(); 916 rec->_signature = method->signature()->as_utf8(); 917 _ci_method_data_records.append(rec); 918 return rec; 919 } 920 921 // Lookup data for a ciMethodData 922 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) { 923 const char* klass_name = method->method_holder()->name()->as_utf8(); 924 const char* method_name = method->name()->as_utf8(); 925 const char* signature = method->signature()->as_utf8(); 926 for (int i = 0; i < _ci_method_data_records.length(); i++) { 927 ciMethodDataRecord* rec = _ci_method_data_records.at(i); 928 if (strcmp(rec->_klass_name, klass_name) == 0 && 929 strcmp(rec->_method_name, method_name) == 0 && 930 strcmp(rec->_signature, signature) == 0) { 931 return rec; 932 } 933 } 934 return NULL; 935 } 936 937 // Create and initialize a record for a ciInlineRecord 938 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth) { 939 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord); 940 rec->_klass_name = method->method_holder()->name()->as_utf8(); 941 rec->_method_name = method->name()->as_utf8(); 942 rec->_signature = method->signature()->as_utf8(); 943 rec->_inline_bci = bci; 944 rec->_inline_depth = depth; 945 _ci_inline_records->append(rec); 946 return rec; 947 } 948 949 // Lookup inlining data for a ciMethod 950 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) { 951 if (_ci_inline_records != NULL) { 952 return find_ciInlineRecord(_ci_inline_records, method, bci, depth); 953 } 954 return NULL; 955 } 956 957 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records, 958 Method* method, int bci, int depth) { 959 if (records != NULL) { 960 const char* klass_name = method->method_holder()->name()->as_utf8(); 961 const char* method_name = method->name()->as_utf8(); 962 const char* signature = method->signature()->as_utf8(); 963 for (int i = 0; i < records->length(); i++) { 964 ciInlineRecord* rec = records->at(i); 965 if ((rec->_inline_bci == bci) && 966 (rec->_inline_depth == depth) && 967 (strcmp(rec->_klass_name, klass_name) == 0) && 968 (strcmp(rec->_method_name, method_name) == 0) && 969 (strcmp(rec->_signature, signature) == 0)) { 970 return rec; 971 } 972 } 973 } 974 return NULL; 975 } 976 977 const char* error_message() { 978 return _error_message; 979 } 980 981 void reset() { 982 _error_message = NULL; 983 _ci_method_records.clear(); 984 _ci_method_data_records.clear(); 985 } 986 987 // Take an ascii string contain \u#### escapes and convert it to utf8 988 // in place. 989 static void unescape_string(char* value) { 990 char* from = value; 991 char* to = value; 992 while (*from != '\0') { 993 if (*from != '\\') { 994 *from++ = *to++; 995 } else { 996 switch (from[1]) { 997 case 'u': { 998 from += 2; 999 jchar value=0; 1000 for (int i=0; i<4; i++) { 1001 char c = *from++; 1002 switch (c) { 1003 case '0': case '1': case '2': case '3': case '4': 1004 case '5': case '6': case '7': case '8': case '9': 1005 value = (value << 4) + c - '0'; 1006 break; 1007 case 'a': case 'b': case 'c': 1008 case 'd': case 'e': case 'f': 1009 value = (value << 4) + 10 + c - 'a'; 1010 break; 1011 case 'A': case 'B': case 'C': 1012 case 'D': case 'E': case 'F': 1013 value = (value << 4) + 10 + c - 'A'; 1014 break; 1015 default: 1016 ShouldNotReachHere(); 1017 } 1018 } 1019 UNICODE::convert_to_utf8(&value, 1, to); 1020 to++; 1021 break; 1022 } 1023 case 't': *to++ = '\t'; from += 2; break; 1024 case 'n': *to++ = '\n'; from += 2; break; 1025 case 'r': *to++ = '\r'; from += 2; break; 1026 case 'f': *to++ = '\f'; from += 2; break; 1027 default: 1028 ShouldNotReachHere(); 1029 } 1030 } 1031 } 1032 *from = *to; 1033 } 1034 }; 1035 1036 void ciReplay::replay(TRAPS) { 1037 int exit_code = replay_impl(THREAD); 1038 1039 Threads::destroy_vm(); 1040 1041 vm_exit(exit_code); 1042 } 1043 1044 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) { 1045 if (FLAG_IS_DEFAULT(InlineDataFile)) { 1046 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt)."); 1047 return NULL; 1048 } 1049 1050 VM_ENTRY_MARK; 1051 // Load and parse the replay data 1052 CompileReplay rp(InlineDataFile, THREAD); 1053 if (!rp.can_replay()) { 1054 tty->print_cr("ciReplay: !rp.can_replay()"); 1055 return NULL; 1056 } 1057 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD); 1058 if (HAS_PENDING_EXCEPTION) { 1059 Handle throwable(THREAD, PENDING_EXCEPTION); 1060 CLEAR_PENDING_EXCEPTION; 1061 java_lang_Throwable::print_stack_trace(throwable, tty); 1062 tty->cr(); 1063 return NULL; 1064 } 1065 1066 if (rp.had_error()) { 1067 tty->print_cr("ciReplay: Failed on %s", rp.error_message()); 1068 return NULL; 1069 } 1070 return data; 1071 } 1072 1073 int ciReplay::replay_impl(TRAPS) { 1074 HandleMark hm; 1075 ResourceMark rm; 1076 1077 if (ReplaySuppressInitializers > 2) { 1078 // ReplaySuppressInitializers > 2 means that we want to allow 1079 // normal VM bootstrap but once we get into the replay itself 1080 // don't allow any intializers to be run. 1081 ReplaySuppressInitializers = 1; 1082 } 1083 1084 if (FLAG_IS_DEFAULT(ReplayDataFile)) { 1085 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt)."); 1086 return 1; 1087 } 1088 1089 // Load and parse the replay data 1090 CompileReplay rp(ReplayDataFile, THREAD); 1091 int exit_code = 0; 1092 if (rp.can_replay()) { 1093 rp.process(THREAD); 1094 } else { 1095 exit_code = 1; 1096 return exit_code; 1097 } 1098 1099 if (HAS_PENDING_EXCEPTION) { 1100 Handle throwable(THREAD, PENDING_EXCEPTION); 1101 CLEAR_PENDING_EXCEPTION; 1102 java_lang_Throwable::print_stack_trace(throwable, tty); 1103 tty->cr(); 1104 exit_code = 2; 1105 } 1106 1107 if (rp.had_error()) { 1108 tty->print_cr("Failed on %s", rp.error_message()); 1109 exit_code = 1; 1110 } 1111 return exit_code; 1112 } 1113 1114 void ciReplay::initialize(ciMethodData* m) { 1115 if (replay_state == NULL) { 1116 return; 1117 } 1118 1119 ASSERT_IN_VM; 1120 ResourceMark rm; 1121 1122 Method* method = m->get_MethodData()->method(); 1123 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method); 1124 if (rec == NULL) { 1125 // This indicates some mismatch with the original environment and 1126 // the replay environment though it's not always enough to 1127 // interfere with reproducing a bug 1128 tty->print_cr("Warning: requesting ciMethodData record for method with no data: "); 1129 method->print_name(tty); 1130 tty->cr(); 1131 } else { 1132 m->_state = rec->_state; 1133 m->_current_mileage = rec->_current_mileage; 1134 if (rec->_data_length != 0) { 1135 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) || 1136 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree"); 1137 1138 // Write the correct ciObjects back into the profile data 1139 ciEnv* env = ciEnv::current(); 1140 for (int i = 0; i < rec->_classes_length; i++) { 1141 Klass *k = rec->_classes[i]; 1142 // In case this class pointer is is tagged, preserve the tag bits 1143 intptr_t status = 0; 1144 if (k != NULL) { 1145 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]); 1146 } 1147 rec->_data[rec->_classes_offsets[i]] = status; 1148 } 1149 for (int i = 0; i < rec->_methods_length; i++) { 1150 Method *m = rec->_methods[i]; 1151 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) = 1152 env->get_metadata(m); 1153 } 1154 // Copy the updated profile data into place as intptr_ts 1155 #ifdef _LP64 1156 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length); 1157 #else 1158 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length); 1159 #endif 1160 } 1161 1162 // copy in the original header 1163 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length); 1164 } 1165 } 1166 1167 1168 bool ciReplay::should_not_inline(ciMethod* method) { 1169 if (replay_state == NULL) { 1170 return false; 1171 } 1172 VM_ENTRY_MARK; 1173 // ciMethod without a record shouldn't be inlined. 1174 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL; 1175 } 1176 1177 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth) { 1178 if (data != NULL) { 1179 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1180 VM_ENTRY_MARK; 1181 // Inline record are ordered by bci and depth. 1182 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) != NULL; 1183 } else if (replay_state != NULL) { 1184 VM_ENTRY_MARK; 1185 // Inline record are ordered by bci and depth. 1186 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) != NULL; 1187 } 1188 return false; 1189 } 1190 1191 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) { 1192 if (data != NULL) { 1193 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1194 VM_ENTRY_MARK; 1195 // Inline record are ordered by bci and depth. 1196 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL; 1197 } else if (replay_state != NULL) { 1198 VM_ENTRY_MARK; 1199 // Inline record are ordered by bci and depth. 1200 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL; 1201 } 1202 return false; 1203 } 1204 1205 void ciReplay::initialize(ciMethod* m) { 1206 if (replay_state == NULL) { 1207 return; 1208 } 1209 1210 ASSERT_IN_VM; 1211 ResourceMark rm; 1212 1213 Method* method = m->get_Method(); 1214 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1215 if (rec == NULL) { 1216 // This indicates some mismatch with the original environment and 1217 // the replay environment though it's not always enough to 1218 // interfere with reproducing a bug 1219 tty->print_cr("Warning: requesting ciMethod record for method with no data: "); 1220 method->print_name(tty); 1221 tty->cr(); 1222 } else { 1223 EXCEPTION_CONTEXT; 1224 // m->_instructions_size = rec->_instructions_size; 1225 m->_instructions_size = -1; 1226 m->_interpreter_invocation_count = rec->_interpreter_invocation_count; 1227 m->_interpreter_throwout_count = rec->_interpreter_throwout_count; 1228 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR); 1229 guarantee(mcs != NULL, "method counters allocation failed"); 1230 mcs->invocation_counter()->_counter = rec->_invocation_counter; 1231 mcs->backedge_counter()->_counter = rec->_backedge_counter; 1232 } 1233 } 1234 1235 bool ciReplay::is_loaded(Method* method) { 1236 if (replay_state == NULL) { 1237 return true; 1238 } 1239 1240 ASSERT_IN_VM; 1241 ResourceMark rm; 1242 1243 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1244 return rec != NULL; 1245 } 1246 #endif // PRODUCT