1 //===-- ModuleList.cpp ------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/Core/ModuleList.h" 11 12 // C Includes 13 // C++ Includes 14 // Other libraries and framework includes 15 // Project includes 16 #include "lldb/Core/Log.h" 17 #include "lldb/Core/Module.h" 18 #include "lldb/Host/Host.h" 19 #include "lldb/Host/Symbols.h" 20 #include "lldb/Symbol/ClangNamespaceDecl.h" 21 #include "lldb/Symbol/ObjectFile.h" 22 #include "lldb/Symbol/VariableList.h" 23 24 using namespace lldb; 25 using namespace lldb_private; 26 27 //---------------------------------------------------------------------- 28 // ModuleList constructor 29 //---------------------------------------------------------------------- 30 ModuleList::ModuleList() : 31 m_modules(), 32 m_modules_mutex (Mutex::eMutexTypeRecursive) 33 { 34 } 35 36 //---------------------------------------------------------------------- 37 // Copy constructor 38 //---------------------------------------------------------------------- 39 ModuleList::ModuleList(const ModuleList& rhs) : 40 m_modules(rhs.m_modules) 41 { 42 } 43 44 //---------------------------------------------------------------------- 45 // Assignment operator 46 //---------------------------------------------------------------------- 47 const ModuleList& 48 ModuleList::operator= (const ModuleList& rhs) 49 { 50 if (this != &rhs) 51 { 52 Mutex::Locker locker(m_modules_mutex); 53 m_modules = rhs.m_modules; 54 } 55 return *this; 56 } 57 58 //---------------------------------------------------------------------- 59 // Destructor 60 //---------------------------------------------------------------------- 61 ModuleList::~ModuleList() 62 { 63 } 64 65 void 66 ModuleList::Append (const ModuleSP &module_sp) 67 { 68 if (module_sp) 69 { 70 Mutex::Locker locker(m_modules_mutex); 71 m_modules.push_back(module_sp); 72 } 73 } 74 75 bool 76 ModuleList::AppendIfNeeded (const ModuleSP &module_sp) 77 { 78 if (module_sp) 79 { 80 Mutex::Locker locker(m_modules_mutex); 81 collection::iterator pos, end = m_modules.end(); 82 for (pos = m_modules.begin(); pos != end; ++pos) 83 { 84 if (pos->get() == module_sp.get()) 85 return false; // Already in the list 86 } 87 // Only push module_sp on the list if it wasn't already in there. 88 m_modules.push_back(module_sp); 89 return true; 90 } 91 return false; 92 } 93 94 bool 95 ModuleList::Remove (const ModuleSP &module_sp) 96 { 97 if (module_sp) 98 { 99 Mutex::Locker locker(m_modules_mutex); 100 collection::iterator pos, end = m_modules.end(); 101 for (pos = m_modules.begin(); pos != end; ++pos) 102 { 103 if (pos->get() == module_sp.get()) 104 { 105 m_modules.erase (pos); 106 return true; 107 } 108 } 109 } 110 return false; 111 } 112 113 114 size_t 115 ModuleList::RemoveOrphans () 116 { 117 Mutex::Locker locker(m_modules_mutex); 118 collection::iterator pos = m_modules.begin(); 119 size_t remove_count = 0; 120 while (pos != m_modules.end()) 121 { 122 if (pos->unique()) 123 { 124 pos = m_modules.erase (pos); 125 ++remove_count; 126 } 127 else 128 { 129 ++pos; 130 } 131 } 132 return remove_count; 133 } 134 135 size_t 136 ModuleList::Remove (ModuleList &module_list) 137 { 138 Mutex::Locker locker(m_modules_mutex); 139 size_t num_removed = 0; 140 collection::iterator pos, end = module_list.m_modules.end(); 141 for (pos = module_list.m_modules.begin(); pos != end; ++pos) 142 { 143 if (Remove (*pos)) 144 ++num_removed; 145 } 146 return num_removed; 147 } 148 149 150 151 void 152 ModuleList::Clear() 153 { 154 Mutex::Locker locker(m_modules_mutex); 155 m_modules.clear(); 156 } 157 158 Module* 159 ModuleList::GetModulePointerAtIndex (uint32_t idx) const 160 { 161 Mutex::Locker locker(m_modules_mutex); 162 if (idx < m_modules.size()) 163 return m_modules[idx].get(); 164 return NULL; 165 } 166 167 ModuleSP 168 ModuleList::GetModuleAtIndex(uint32_t idx) 169 { 170 Mutex::Locker locker(m_modules_mutex); 171 ModuleSP module_sp; 172 if (idx < m_modules.size()) 173 module_sp = m_modules[idx]; 174 return module_sp; 175 } 176 177 uint32_t 178 ModuleList::FindFunctions (const ConstString &name, 179 uint32_t name_type_mask, 180 bool include_symbols, 181 bool append, 182 SymbolContextList &sc_list) 183 { 184 if (!append) 185 sc_list.Clear(); 186 187 Mutex::Locker locker(m_modules_mutex); 188 collection::const_iterator pos, end = m_modules.end(); 189 for (pos = m_modules.begin(); pos != end; ++pos) 190 { 191 (*pos)->FindFunctions (name, NULL, name_type_mask, include_symbols, true, sc_list); 192 } 193 194 return sc_list.GetSize(); 195 } 196 197 uint32_t 198 ModuleList::FindCompileUnits (const FileSpec &path, 199 bool append, 200 SymbolContextList &sc_list) 201 { 202 if (!append) 203 sc_list.Clear(); 204 205 Mutex::Locker locker(m_modules_mutex); 206 collection::const_iterator pos, end = m_modules.end(); 207 for (pos = m_modules.begin(); pos != end; ++pos) 208 { 209 (*pos)->FindCompileUnits (path, true, sc_list); 210 } 211 212 return sc_list.GetSize(); 213 } 214 215 uint32_t 216 ModuleList::FindGlobalVariables (const ConstString &name, 217 bool append, 218 uint32_t max_matches, 219 VariableList& variable_list) 220 { 221 size_t initial_size = variable_list.GetSize(); 222 Mutex::Locker locker(m_modules_mutex); 223 collection::iterator pos, end = m_modules.end(); 224 for (pos = m_modules.begin(); pos != end; ++pos) 225 { 226 (*pos)->FindGlobalVariables (name, NULL, append, max_matches, variable_list); 227 } 228 return variable_list.GetSize() - initial_size; 229 } 230 231 232 uint32_t 233 ModuleList::FindGlobalVariables (const RegularExpression& regex, 234 bool append, 235 uint32_t max_matches, 236 VariableList& variable_list) 237 { 238 size_t initial_size = variable_list.GetSize(); 239 Mutex::Locker locker(m_modules_mutex); 240 collection::iterator pos, end = m_modules.end(); 241 for (pos = m_modules.begin(); pos != end; ++pos) 242 { 243 (*pos)->FindGlobalVariables (regex, append, max_matches, variable_list); 244 } 245 return variable_list.GetSize() - initial_size; 246 } 247 248 249 size_t 250 ModuleList::FindSymbolsWithNameAndType (const ConstString &name, 251 SymbolType symbol_type, 252 SymbolContextList &sc_list, 253 bool append) 254 { 255 Mutex::Locker locker(m_modules_mutex); 256 if (!append) 257 sc_list.Clear(); 258 size_t initial_size = sc_list.GetSize(); 259 260 collection::iterator pos, end = m_modules.end(); 261 for (pos = m_modules.begin(); pos != end; ++pos) 262 (*pos)->FindSymbolsWithNameAndType (name, symbol_type, sc_list); 263 return sc_list.GetSize() - initial_size; 264 } 265 266 size_t 267 ModuleList::FindSymbolsMatchingRegExAndType (const RegularExpression ®ex, 268 lldb::SymbolType symbol_type, 269 SymbolContextList &sc_list, 270 bool append) 271 { 272 Mutex::Locker locker(m_modules_mutex); 273 if (!append) 274 sc_list.Clear(); 275 size_t initial_size = sc_list.GetSize(); 276 277 collection::iterator pos, end = m_modules.end(); 278 for (pos = m_modules.begin(); pos != end; ++pos) 279 (*pos)->FindSymbolsMatchingRegExAndType (regex, symbol_type, sc_list); 280 return sc_list.GetSize() - initial_size; 281 } 282 283 class ModuleMatches 284 { 285 public: 286 //-------------------------------------------------------------- 287 /// Construct with the user ID to look for. 288 //-------------------------------------------------------------- 289 ModuleMatches (const FileSpec *file_spec_ptr, 290 const ArchSpec *arch_ptr, 291 const lldb_private::UUID *uuid_ptr, 292 const ConstString *object_name, 293 bool file_spec_is_platform) : 294 m_file_spec_ptr (file_spec_ptr), 295 m_arch_ptr (arch_ptr), 296 m_uuid_ptr (uuid_ptr), 297 m_object_name (object_name), 298 m_file_spec_compare_basename_only (false), 299 m_file_spec_is_platform (file_spec_is_platform) 300 { 301 if (file_spec_ptr) 302 m_file_spec_compare_basename_only = file_spec_ptr->GetDirectory(); 303 } 304 305 306 //-------------------------------------------------------------- 307 /// Unary predicate function object callback. 308 //-------------------------------------------------------------- 309 bool 310 operator () (const ModuleSP& module_sp) const 311 { 312 if (m_file_spec_ptr) 313 { 314 if (m_file_spec_is_platform) 315 { 316 if (!FileSpec::Equal (*m_file_spec_ptr, 317 module_sp->GetPlatformFileSpec(), 318 m_file_spec_compare_basename_only)) 319 return false; 320 321 } 322 else 323 { 324 if (!FileSpec::Equal (*m_file_spec_ptr, 325 module_sp->GetFileSpec(), 326 m_file_spec_compare_basename_only)) 327 return false; 328 } 329 } 330 331 if (m_arch_ptr && m_arch_ptr->IsValid()) 332 { 333 if (module_sp->GetArchitecture() != *m_arch_ptr) 334 return false; 335 } 336 337 if (m_uuid_ptr && m_uuid_ptr->IsValid()) 338 { 339 if (module_sp->GetUUID() != *m_uuid_ptr) 340 return false; 341 } 342 343 if (m_object_name) 344 { 345 if (module_sp->GetObjectName() != *m_object_name) 346 return false; 347 } 348 return true; 349 } 350 351 private: 352 //-------------------------------------------------------------- 353 // Member variables. 354 //-------------------------------------------------------------- 355 const FileSpec * m_file_spec_ptr; 356 const ArchSpec * m_arch_ptr; 357 const lldb_private::UUID * m_uuid_ptr; 358 const ConstString * m_object_name; 359 bool m_file_spec_compare_basename_only; 360 bool m_file_spec_is_platform; 361 }; 362 363 size_t 364 ModuleList::FindModules 365 ( 366 const FileSpec *file_spec_ptr, 367 const ArchSpec *arch_ptr, 368 const lldb_private::UUID *uuid_ptr, 369 const ConstString *object_name, 370 ModuleList& matching_module_list 371 ) const 372 { 373 size_t existing_matches = matching_module_list.GetSize(); 374 ModuleMatches matcher (file_spec_ptr, arch_ptr, uuid_ptr, object_name, false); 375 376 Mutex::Locker locker(m_modules_mutex); 377 collection::const_iterator end = m_modules.end(); 378 collection::const_iterator pos; 379 380 for (pos = std::find_if (m_modules.begin(), end, matcher); 381 pos != end; 382 pos = std::find_if (++pos, end, matcher)) 383 { 384 ModuleSP module_sp(*pos); 385 matching_module_list.Append(module_sp); 386 } 387 return matching_module_list.GetSize() - existing_matches; 388 } 389 390 ModuleSP 391 ModuleList::FindModule (const Module *module_ptr) 392 { 393 ModuleSP module_sp; 394 395 // Scope for "locker" 396 { 397 Mutex::Locker locker(m_modules_mutex); 398 collection::const_iterator pos, end = m_modules.end(); 399 400 for (pos = m_modules.begin(); pos != end; ++pos) 401 { 402 if ((*pos).get() == module_ptr) 403 { 404 module_sp = (*pos); 405 break; 406 } 407 } 408 } 409 return module_sp; 410 411 } 412 413 ModuleSP 414 ModuleList::FindModule (const UUID &uuid) 415 { 416 ModuleSP module_sp; 417 418 if (uuid.IsValid()) 419 { 420 Mutex::Locker locker(m_modules_mutex); 421 collection::const_iterator pos, end = m_modules.end(); 422 423 for (pos = m_modules.begin(); pos != end; ++pos) 424 { 425 if ((*pos)->GetUUID() == uuid) 426 { 427 module_sp = (*pos); 428 break; 429 } 430 } 431 } 432 return module_sp; 433 } 434 435 436 uint32_t 437 ModuleList::FindTypes (const SymbolContext& sc, const ConstString &name, bool append, uint32_t max_matches, TypeList& types) 438 { 439 Mutex::Locker locker(m_modules_mutex); 440 441 if (!append) 442 types.Clear(); 443 444 uint32_t total_matches = 0; 445 collection::const_iterator pos, end = m_modules.end(); 446 for (pos = m_modules.begin(); pos != end; ++pos) 447 { 448 if (sc.module_sp.get() == NULL || sc.module_sp.get() == (*pos).get()) 449 total_matches += (*pos)->FindTypes (sc, name, NULL, true, max_matches, types); 450 451 if (total_matches >= max_matches) 452 break; 453 } 454 return total_matches; 455 } 456 457 ModuleSP 458 ModuleList::FindFirstModuleForFileSpec (const FileSpec &file_spec, 459 const ArchSpec *arch_ptr, 460 const ConstString *object_name) 461 { 462 ModuleSP module_sp; 463 ModuleMatches matcher (&file_spec, 464 arch_ptr, 465 NULL, 466 object_name, 467 false); 468 469 // Scope for "locker" 470 { 471 Mutex::Locker locker(m_modules_mutex); 472 collection::const_iterator end = m_modules.end(); 473 collection::const_iterator pos = m_modules.begin(); 474 475 pos = std::find_if (pos, end, matcher); 476 if (pos != end) 477 module_sp = (*pos); 478 } 479 return module_sp; 480 481 } 482 483 ModuleSP 484 ModuleList::FindFirstModuleForPlatormFileSpec (const FileSpec &file_spec, 485 const ArchSpec *arch_ptr, 486 const ConstString *object_name) 487 { 488 ModuleSP module_sp; 489 ModuleMatches matcher (&file_spec, 490 arch_ptr, 491 NULL, 492 object_name, 493 true); 494 495 // Scope for "locker" 496 { 497 Mutex::Locker locker(m_modules_mutex); 498 collection::const_iterator end = m_modules.end(); 499 collection::const_iterator pos = m_modules.begin(); 500 501 pos = std::find_if (pos, end, matcher); 502 if (pos != end) 503 module_sp = (*pos); 504 } 505 return module_sp; 506 507 } 508 509 510 size_t 511 ModuleList::GetSize() const 512 { 513 size_t size = 0; 514 { 515 Mutex::Locker locker(m_modules_mutex); 516 size = m_modules.size(); 517 } 518 return size; 519 } 520 521 522 void 523 ModuleList::Dump(Stream *s) const 524 { 525 // s.Printf("%.*p: ", (int)sizeof(void*) * 2, this); 526 // s.Indent(); 527 // s << "ModuleList\n"; 528 529 Mutex::Locker locker(m_modules_mutex); 530 collection::const_iterator pos, end = m_modules.end(); 531 for (pos = m_modules.begin(); pos != end; ++pos) 532 { 533 (*pos)->Dump(s); 534 } 535 } 536 537 void 538 ModuleList::LogUUIDAndPaths (LogSP &log_sp, const char *prefix_cstr) 539 { 540 if (log_sp) 541 { 542 Mutex::Locker locker(m_modules_mutex); 543 char uuid_cstr[256]; 544 collection::const_iterator pos, begin = m_modules.begin(), end = m_modules.end(); 545 for (pos = begin; pos != end; ++pos) 546 { 547 Module *module = pos->get(); 548 module->GetUUID().GetAsCString (uuid_cstr, sizeof(uuid_cstr)); 549 const FileSpec &module_file_spec = module->GetFileSpec(); 550 log_sp->Printf ("%s[%u] %s (%s) \"%s/%s\"", 551 prefix_cstr ? prefix_cstr : "", 552 (uint32_t)std::distance (begin, pos), 553 uuid_cstr, 554 module->GetArchitecture().GetArchitectureName(), 555 module_file_spec.GetDirectory().GetCString(), 556 module_file_spec.GetFilename().GetCString()); 557 } 558 } 559 } 560 561 bool 562 ModuleList::ResolveFileAddress (lldb::addr_t vm_addr, Address& so_addr) 563 { 564 Mutex::Locker locker(m_modules_mutex); 565 collection::const_iterator pos, end = m_modules.end(); 566 for (pos = m_modules.begin(); pos != end; ++pos) 567 { 568 if ((*pos)->ResolveFileAddress (vm_addr, so_addr)) 569 return true; 570 } 571 572 return false; 573 } 574 575 uint32_t 576 ModuleList::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) 577 { 578 // The address is already section offset so it has a module 579 uint32_t resolved_flags = 0; 580 Module *module = so_addr.GetModule(); 581 if (module) 582 { 583 resolved_flags = module->ResolveSymbolContextForAddress (so_addr, 584 resolve_scope, 585 sc); 586 } 587 else 588 { 589 Mutex::Locker locker(m_modules_mutex); 590 collection::const_iterator pos, end = m_modules.end(); 591 for (pos = m_modules.begin(); pos != end; ++pos) 592 { 593 resolved_flags = (*pos)->ResolveSymbolContextForAddress (so_addr, 594 resolve_scope, 595 sc); 596 if (resolved_flags != 0) 597 break; 598 } 599 } 600 601 return resolved_flags; 602 } 603 604 uint32_t 605 ModuleList::ResolveSymbolContextForFilePath 606 ( 607 const char *file_path, 608 uint32_t line, 609 bool check_inlines, 610 uint32_t resolve_scope, 611 SymbolContextList& sc_list 612 ) 613 { 614 FileSpec file_spec(file_path, false); 615 return ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list); 616 } 617 618 uint32_t 619 ModuleList::ResolveSymbolContextsForFileSpec (const FileSpec &file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 620 { 621 Mutex::Locker locker(m_modules_mutex); 622 collection::const_iterator pos, end = m_modules.end(); 623 for (pos = m_modules.begin(); pos != end; ++pos) 624 { 625 (*pos)->ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list); 626 } 627 628 return sc_list.GetSize(); 629 } 630 631 uint32_t 632 ModuleList::GetIndexForModule (const Module *module) const 633 { 634 if (module) 635 { 636 Mutex::Locker locker(m_modules_mutex); 637 collection::const_iterator pos; 638 collection::const_iterator begin = m_modules.begin(); 639 collection::const_iterator end = m_modules.end(); 640 for (pos = begin; pos != end; ++pos) 641 { 642 if ((*pos).get() == module) 643 return std::distance (begin, pos); 644 } 645 } 646 return LLDB_INVALID_INDEX32; 647 } 648 649 static ModuleList & 650 GetSharedModuleList () 651 { 652 static ModuleList g_shared_module_list; 653 return g_shared_module_list; 654 } 655 656 const lldb::ModuleSP 657 ModuleList::GetModuleSP (const Module *module_ptr) 658 { 659 lldb::ModuleSP module_sp; 660 if (module_ptr) 661 { 662 ModuleList &shared_module_list = GetSharedModuleList (); 663 module_sp = shared_module_list.FindModule (module_ptr); 664 if (module_sp.get() == NULL) 665 { 666 char uuid_cstr[256]; 667 const_cast<Module *>(module_ptr)->GetUUID().GetAsCString (uuid_cstr, sizeof(uuid_cstr)); 668 const FileSpec &module_file_spec = module_ptr->GetFileSpec(); 669 Host::SystemLog (Host::eSystemLogWarning, 670 "warning: module not in shared module list: %s (%s) \"%s/%s\"\n", 671 uuid_cstr, 672 module_ptr->GetArchitecture().GetArchitectureName(), 673 module_file_spec.GetDirectory().GetCString(), 674 module_file_spec.GetFilename().GetCString()); 675 } 676 } 677 return module_sp; 678 } 679 680 size_t 681 ModuleList::FindSharedModules 682 ( 683 const FileSpec& in_file_spec, 684 const ArchSpec& arch, 685 const lldb_private::UUID *uuid_ptr, 686 const ConstString *object_name_ptr, 687 ModuleList &matching_module_list 688 ) 689 { 690 ModuleList &shared_module_list = GetSharedModuleList (); 691 return shared_module_list.FindModules (&in_file_spec, &arch, uuid_ptr, object_name_ptr, matching_module_list); 692 } 693 694 uint32_t 695 ModuleList::RemoveOrphanSharedModules () 696 { 697 return GetSharedModuleList ().RemoveOrphans(); 698 } 699 //#define ENABLE_MODULE_SP_LOGGING 700 #if defined (ENABLE_MODULE_SP_LOGGING) 701 #include "lldb/Core/StreamFile.h" 702 #include "lldb/Host/Host.h" 703 static void 704 ModuleSharedPtrLogger(void* p, const ModuleSP& sp, bool will_decrement) 705 { 706 if (sp.get()) 707 { 708 const char *module_basename = sp->GetFileSpec().GetFilename().GetCString(); 709 // If "p" is set, then it is the basename of a module to watch for. This 710 // basename MUST be uniqued first by getting it from a ConstString or this 711 // won't work. 712 if (p && p != module_basename) 713 { 714 return; 715 } 716 long use_count = sp.use_count(); 717 if (will_decrement) 718 --use_count; 719 720 printf("\nModuleSP(%p): %c %p {%lu} %s/%s\n", &sp, will_decrement ? '-' : '+', sp.get(), use_count, sp->GetFileSpec().GetDirectory().GetCString(), module_basename); 721 StreamFile stdout_strm(stdout, false); 722 Host::Backtrace (stdout_strm, 512); 723 } 724 } 725 #endif 726 727 Error 728 ModuleList::GetSharedModule 729 ( 730 const FileSpec& in_file_spec, 731 const ArchSpec& arch, 732 const lldb_private::UUID *uuid_ptr, 733 const ConstString *object_name_ptr, 734 off_t object_offset, 735 ModuleSP &module_sp, 736 ModuleSP *old_module_sp_ptr, 737 bool *did_create_ptr, 738 bool always_create 739 ) 740 { 741 ModuleList &shared_module_list = GetSharedModuleList (); 742 Mutex::Locker locker(shared_module_list.m_modules_mutex); 743 char path[PATH_MAX]; 744 char uuid_cstr[64]; 745 746 Error error; 747 748 module_sp.reset(); 749 750 if (did_create_ptr) 751 *did_create_ptr = false; 752 if (old_module_sp_ptr) 753 old_module_sp_ptr->reset(); 754 755 756 // First just try and get the file where it purports to be (path in 757 // in_file_spec), then check and uuid. 758 759 if (in_file_spec) 760 { 761 // Make sure no one else can try and get or create a module while this 762 // function is actively working on it by doing an extra lock on the 763 // global mutex list. 764 if (always_create == false) 765 { 766 ModuleList matching_module_list; 767 const size_t num_matching_modules = shared_module_list.FindModules (&in_file_spec, &arch, NULL, object_name_ptr, matching_module_list); 768 if (num_matching_modules > 0) 769 { 770 for (uint32_t module_idx = 0; module_idx < num_matching_modules; ++module_idx) 771 { 772 module_sp = matching_module_list.GetModuleAtIndex(module_idx); 773 if (uuid_ptr && uuid_ptr->IsValid()) 774 { 775 // We found the module we were looking for. 776 if (module_sp->GetUUID() == *uuid_ptr) 777 return error; 778 } 779 else 780 { 781 // If we didn't have a UUID in mind when looking for the object file, 782 // then we should make sure the modification time hasn't changed! 783 TimeValue file_spec_mod_time(in_file_spec.GetModificationTime()); 784 if (file_spec_mod_time.IsValid()) 785 { 786 if (file_spec_mod_time == module_sp->GetModificationTime()) 787 return error; 788 } 789 } 790 if (old_module_sp_ptr && !old_module_sp_ptr->get()) 791 *old_module_sp_ptr = module_sp; 792 shared_module_list.Remove (module_sp); 793 module_sp.reset(); 794 } 795 } 796 } 797 798 if (module_sp) 799 return error; 800 else 801 { 802 #if defined ENABLE_MODULE_SP_LOGGING 803 ModuleSP logging_module_sp (new Module (in_file_spec, arch, object_name_ptr, object_offset), ModuleSharedPtrLogger, (void *)ConstString("a.out").GetCString()); 804 module_sp = logging_module_sp; 805 #else 806 module_sp.reset (new Module (in_file_spec, arch, object_name_ptr, object_offset)); 807 #endif 808 // Make sure there are a module and an object file since we can specify 809 // a valid file path with an architecture that might not be in that file. 810 // By getting the object file we can guarantee that the architecture matches 811 if (module_sp && module_sp->GetObjectFile()) 812 { 813 // If we get in here we got the correct arch, now we just need 814 // to verify the UUID if one was given 815 if (uuid_ptr && *uuid_ptr != module_sp->GetUUID()) 816 module_sp.reset(); 817 else 818 { 819 if (did_create_ptr) 820 *did_create_ptr = true; 821 822 shared_module_list.Append(module_sp); 823 return error; 824 } 825 } 826 } 827 } 828 829 // Either the file didn't exist where at the path, or no path was given, so 830 // we now have to use more extreme measures to try and find the appropriate 831 // module. 832 833 // Fixup the incoming path in case the path points to a valid file, yet 834 // the arch or UUID (if one was passed in) don't match. 835 FileSpec file_spec = Symbols::LocateExecutableObjectFile (in_file_spec ? &in_file_spec : NULL, 836 arch.IsValid() ? &arch : NULL, 837 uuid_ptr); 838 839 // Don't look for the file if it appears to be the same one we already 840 // checked for above... 841 if (file_spec != in_file_spec) 842 { 843 if (!file_spec.Exists()) 844 { 845 file_spec.GetPath(path, sizeof(path)); 846 if (path[0] == '\0') 847 in_file_spec.GetPath(path, sizeof(path)); 848 if (file_spec.Exists()) 849 { 850 if (uuid_ptr && uuid_ptr->IsValid()) 851 uuid_ptr->GetAsCString(uuid_cstr, sizeof (uuid_cstr)); 852 else 853 uuid_cstr[0] = '\0'; 854 855 856 if (arch.IsValid()) 857 { 858 if (uuid_cstr[0]) 859 error.SetErrorStringWithFormat("'%s' does not contain the %s architecture and UUID %s", path, arch.GetArchitectureName(), uuid_cstr); 860 else 861 error.SetErrorStringWithFormat("'%s' does not contain the %s architecture.", path, arch.GetArchitectureName()); 862 } 863 } 864 else 865 { 866 error.SetErrorStringWithFormat("'%s' does not exist", path); 867 } 868 return error; 869 } 870 871 872 // Make sure no one else can try and get or create a module while this 873 // function is actively working on it by doing an extra lock on the 874 // global mutex list. 875 ModuleList matching_module_list; 876 if (shared_module_list.FindModules (&file_spec, &arch, uuid_ptr, object_name_ptr, matching_module_list) > 0) 877 { 878 module_sp = matching_module_list.GetModuleAtIndex(0); 879 880 // If we didn't have a UUID in mind when looking for the object file, 881 // then we should make sure the modification time hasn't changed! 882 if (uuid_ptr == NULL) 883 { 884 TimeValue file_spec_mod_time(file_spec.GetModificationTime()); 885 if (file_spec_mod_time.IsValid()) 886 { 887 if (file_spec_mod_time != module_sp->GetModificationTime()) 888 { 889 if (old_module_sp_ptr) 890 *old_module_sp_ptr = module_sp; 891 shared_module_list.Remove (module_sp); 892 module_sp.reset(); 893 } 894 } 895 } 896 } 897 898 if (module_sp.get() == NULL) 899 { 900 #if defined ENABLE_MODULE_SP_LOGGING 901 ModuleSP logging_module_sp (new Module (file_spec, arch, object_name_ptr, object_offset), ModuleSharedPtrLogger, 0); 902 module_sp = logging_module_sp; 903 #else 904 module_sp.reset (new Module (file_spec, arch, object_name_ptr, object_offset)); 905 #endif 906 // Make sure there are a module and an object file since we can specify 907 // a valid file path with an architecture that might not be in that file. 908 // By getting the object file we can guarantee that the architecture matches 909 if (module_sp && module_sp->GetObjectFile()) 910 { 911 if (did_create_ptr) 912 *did_create_ptr = true; 913 914 shared_module_list.Append(module_sp); 915 } 916 else 917 { 918 file_spec.GetPath(path, sizeof(path)); 919 920 if (file_spec) 921 { 922 if (arch.IsValid()) 923 error.SetErrorStringWithFormat("unable to open %s architecture in '%s'", arch.GetArchitectureName(), path); 924 else 925 error.SetErrorStringWithFormat("unable to open '%s'", path); 926 } 927 else 928 { 929 if (uuid_ptr && uuid_ptr->IsValid()) 930 uuid_ptr->GetAsCString(uuid_cstr, sizeof (uuid_cstr)); 931 else 932 uuid_cstr[0] = '\0'; 933 934 if (uuid_cstr[0]) 935 error.SetErrorStringWithFormat("cannot locate a module for UUID '%s'", uuid_cstr); 936 else 937 error.SetErrorStringWithFormat("cannot locate a module"); 938 } 939 } 940 } 941 } 942 943 return error; 944 } 945 946 bool 947 ModuleList::RemoveSharedModule (lldb::ModuleSP &module_sp) 948 { 949 return GetSharedModuleList ().Remove (module_sp); 950 } 951 952 953