1 //===-- Thread.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/lldb-private-log.h" 11 #include "lldb/Breakpoint/BreakpointLocation.h" 12 #include "lldb/Core/Debugger.h" 13 #include "lldb/Core/Log.h" 14 #include "lldb/Core/Stream.h" 15 #include "lldb/Core/StreamString.h" 16 #include "lldb/Core/RegularExpression.h" 17 #include "lldb/Host/Host.h" 18 #include "lldb/Target/DynamicLoader.h" 19 #include "lldb/Target/ExecutionContext.h" 20 #include "lldb/Target/ObjCLanguageRuntime.h" 21 #include "lldb/Target/Process.h" 22 #include "lldb/Target/RegisterContext.h" 23 #include "lldb/Target/StopInfo.h" 24 #include "lldb/Target/Target.h" 25 #include "lldb/Target/Thread.h" 26 #include "lldb/Target/ThreadPlan.h" 27 #include "lldb/Target/ThreadPlanCallFunction.h" 28 #include "lldb/Target/ThreadPlanBase.h" 29 #include "lldb/Target/ThreadPlanStepInstruction.h" 30 #include "lldb/Target/ThreadPlanStepOut.h" 31 #include "lldb/Target/ThreadPlanStepOverBreakpoint.h" 32 #include "lldb/Target/ThreadPlanStepThrough.h" 33 #include "lldb/Target/ThreadPlanStepInRange.h" 34 #include "lldb/Target/ThreadPlanStepOverRange.h" 35 #include "lldb/Target/ThreadPlanRunToAddress.h" 36 #include "lldb/Target/ThreadPlanStepUntil.h" 37 #include "lldb/Target/ThreadSpec.h" 38 #include "lldb/Target/Unwind.h" 39 #include "Plugins/Process/Utility/UnwindLLDB.h" 40 #include "UnwindMacOSXFrameBackchain.h" 41 42 43 using namespace lldb; 44 using namespace lldb_private; 45 46 Thread::Thread (const ProcessSP &process_sp, lldb::tid_t tid) : 47 UserID (tid), 48 ThreadInstanceSettings (GetSettingsController()), 49 m_process_wp (process_sp), 50 m_actual_stop_info_sp (), 51 m_index_id (process_sp->GetNextThreadIndexID ()), 52 m_reg_context_sp (), 53 m_state (eStateUnloaded), 54 m_state_mutex (Mutex::eMutexTypeRecursive), 55 m_plan_stack (), 56 m_completed_plan_stack(), 57 m_curr_frames_sp (), 58 m_prev_frames_sp (), 59 m_resume_signal (LLDB_INVALID_SIGNAL_NUMBER), 60 m_resume_state (eStateRunning), 61 m_temporary_resume_state (eStateRunning), 62 m_unwinder_ap (), 63 m_destroy_called (false), 64 m_thread_stop_reason_stop_id (0) 65 66 { 67 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 68 if (log) 69 log->Printf ("%p Thread::Thread(tid = 0x%4.4llx)", this, GetID()); 70 71 QueueFundamentalPlan(true); 72 UpdateInstanceName(); 73 } 74 75 76 Thread::~Thread() 77 { 78 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 79 if (log) 80 log->Printf ("%p Thread::~Thread(tid = 0x%4.4llx)", this, GetID()); 81 /// If you hit this assert, it means your derived class forgot to call DoDestroy in its destructor. 82 assert (m_destroy_called); 83 } 84 85 void 86 Thread::DestroyThread () 87 { 88 m_plan_stack.clear(); 89 m_discarded_plan_stack.clear(); 90 m_completed_plan_stack.clear(); 91 m_destroy_called = true; 92 } 93 94 lldb::StopInfoSP 95 Thread::GetStopInfo () 96 { 97 ThreadPlanSP plan_sp (GetCompletedPlan()); 98 if (plan_sp) 99 return StopInfo::CreateStopReasonWithPlan (plan_sp, GetReturnValueObject()); 100 else 101 { 102 ProcessSP process_sp (GetProcess()); 103 if (process_sp 104 && m_actual_stop_info_sp 105 && m_actual_stop_info_sp->IsValid() 106 && m_thread_stop_reason_stop_id == process_sp->GetStopID()) 107 return m_actual_stop_info_sp; 108 else 109 return GetPrivateStopReason (); 110 } 111 } 112 113 void 114 Thread::SetStopInfo (const lldb::StopInfoSP &stop_info_sp) 115 { 116 m_actual_stop_info_sp = stop_info_sp; 117 if (m_actual_stop_info_sp) 118 m_actual_stop_info_sp->MakeStopInfoValid(); 119 ProcessSP process_sp (GetProcess()); 120 if (process_sp) 121 m_thread_stop_reason_stop_id = process_sp->GetStopID(); 122 else 123 m_thread_stop_reason_stop_id = UINT32_MAX; 124 } 125 126 void 127 Thread::SetStopInfoToNothing() 128 { 129 // Note, we can't just NULL out the private reason, or the native thread implementation will try to 130 // go calculate it again. For now, just set it to a Unix Signal with an invalid signal number. 131 SetStopInfo (StopInfo::CreateStopReasonWithSignal (*this, LLDB_INVALID_SIGNAL_NUMBER)); 132 } 133 134 bool 135 Thread::ThreadStoppedForAReason (void) 136 { 137 return GetPrivateStopReason () != NULL; 138 } 139 140 bool 141 Thread::CheckpointThreadState (ThreadStateCheckpoint &saved_state) 142 { 143 if (!SaveFrameZeroState(saved_state.register_backup)) 144 return false; 145 146 saved_state.stop_info_sp = GetStopInfo(); 147 ProcessSP process_sp (GetProcess()); 148 if (process_sp) 149 saved_state.orig_stop_id = process_sp->GetStopID(); 150 return true; 151 } 152 153 bool 154 Thread::RestoreThreadStateFromCheckpoint (ThreadStateCheckpoint &saved_state) 155 { 156 RestoreSaveFrameZero(saved_state.register_backup); 157 if (saved_state.stop_info_sp) 158 saved_state.stop_info_sp->MakeStopInfoValid(); 159 SetStopInfo(saved_state.stop_info_sp); 160 return true; 161 } 162 163 StateType 164 Thread::GetState() const 165 { 166 // If any other threads access this we will need a mutex for it 167 Mutex::Locker locker(m_state_mutex); 168 return m_state; 169 } 170 171 void 172 Thread::SetState(StateType state) 173 { 174 Mutex::Locker locker(m_state_mutex); 175 m_state = state; 176 } 177 178 void 179 Thread::WillStop() 180 { 181 ThreadPlan *current_plan = GetCurrentPlan(); 182 183 // FIXME: I may decide to disallow threads with no plans. In which 184 // case this should go to an assert. 185 186 if (!current_plan) 187 return; 188 189 current_plan->WillStop(); 190 } 191 192 void 193 Thread::SetupForResume () 194 { 195 if (GetResumeState() != eStateSuspended) 196 { 197 198 // If we're at a breakpoint push the step-over breakpoint plan. Do this before 199 // telling the current plan it will resume, since we might change what the current 200 // plan is. 201 202 lldb::addr_t pc = GetRegisterContext()->GetPC(); 203 BreakpointSiteSP bp_site_sp = GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 204 if (bp_site_sp && bp_site_sp->IsEnabled()) 205 { 206 // Note, don't assume there's a ThreadPlanStepOverBreakpoint, the target may not require anything 207 // special to step over a breakpoint. 208 209 ThreadPlan *cur_plan = GetCurrentPlan(); 210 211 if (cur_plan->GetKind() != ThreadPlan::eKindStepOverBreakpoint) 212 { 213 ThreadPlanStepOverBreakpoint *step_bp_plan = new ThreadPlanStepOverBreakpoint (*this); 214 if (step_bp_plan) 215 { 216 ThreadPlanSP step_bp_plan_sp; 217 step_bp_plan->SetPrivate (true); 218 219 if (GetCurrentPlan()->RunState() != eStateStepping) 220 { 221 step_bp_plan->SetAutoContinue(true); 222 } 223 step_bp_plan_sp.reset (step_bp_plan); 224 QueueThreadPlan (step_bp_plan_sp, false); 225 } 226 } 227 } 228 } 229 } 230 231 bool 232 Thread::WillResume (StateType resume_state) 233 { 234 // At this point clear the completed plan stack. 235 m_completed_plan_stack.clear(); 236 m_discarded_plan_stack.clear(); 237 238 SetTemporaryResumeState(resume_state); 239 240 // This is a little dubious, but we are trying to limit how often we actually fetch stop info from 241 // the target, 'cause that slows down single stepping. So assume that if we got to the point where 242 // we're about to resume, and we haven't yet had to fetch the stop reason, then it doesn't need to know 243 // about the fact that we are resuming... 244 const uint32_t process_stop_id = GetProcess()->GetStopID(); 245 if (m_thread_stop_reason_stop_id == process_stop_id && 246 (m_actual_stop_info_sp && m_actual_stop_info_sp->IsValid())) 247 { 248 StopInfo *stop_info = GetPrivateStopReason().get(); 249 if (stop_info) 250 stop_info->WillResume (resume_state); 251 } 252 253 // Tell all the plans that we are about to resume in case they need to clear any state. 254 // We distinguish between the plan on the top of the stack and the lower 255 // plans in case a plan needs to do any special business before it runs. 256 257 ThreadPlan *plan_ptr = GetCurrentPlan(); 258 plan_ptr->WillResume(resume_state, true); 259 260 while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL) 261 { 262 plan_ptr->WillResume (resume_state, false); 263 } 264 265 m_actual_stop_info_sp.reset(); 266 return true; 267 } 268 269 void 270 Thread::DidResume () 271 { 272 SetResumeSignal (LLDB_INVALID_SIGNAL_NUMBER); 273 } 274 275 bool 276 Thread::ShouldStop (Event* event_ptr) 277 { 278 ThreadPlan *current_plan = GetCurrentPlan(); 279 bool should_stop = true; 280 281 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 282 283 if (GetResumeState () == eStateSuspended) 284 { 285 if (log) 286 log->Printf ("Thread::%s for tid = 0x%4.4llx, should_stop = 0 (ignore since thread was suspended)", 287 __FUNCTION__, 288 GetID ()); 289 // log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx, should_stop = 0 (ignore since thread was suspended)", 290 // __FUNCTION__, 291 // GetID (), 292 // GetRegisterContext()->GetPC()); 293 return false; 294 } 295 296 if (GetTemporaryResumeState () == eStateSuspended) 297 { 298 if (log) 299 log->Printf ("Thread::%s for tid = 0x%4.4llx, should_stop = 0 (ignore since thread was suspended)", 300 __FUNCTION__, 301 GetID ()); 302 // log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx, should_stop = 0 (ignore since thread was suspended)", 303 // __FUNCTION__, 304 // GetID (), 305 // GetRegisterContext()->GetPC()); 306 return false; 307 } 308 309 if (ThreadStoppedForAReason() == false) 310 { 311 if (log) 312 log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx, should_stop = 0 (ignore since no stop reason)", 313 __FUNCTION__, 314 GetID (), 315 GetRegisterContext()->GetPC()); 316 return false; 317 } 318 319 if (log) 320 { 321 log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx", 322 __FUNCTION__, 323 GetID (), 324 GetRegisterContext()->GetPC()); 325 log->Printf ("^^^^^^^^ Thread::ShouldStop Begin ^^^^^^^^"); 326 StreamString s; 327 s.IndentMore(); 328 DumpThreadPlans(&s); 329 log->Printf ("Plan stack initial state:\n%s", s.GetData()); 330 } 331 332 // The top most plan always gets to do the trace log... 333 current_plan->DoTraceLog (); 334 335 // If the base plan doesn't understand why we stopped, then we have to find a plan that does. 336 // If that plan is still working, then we don't need to do any more work. If the plan that explains 337 // the stop is done, then we should pop all the plans below it, and pop it, and then let the plans above it decide 338 // whether they still need to do more work. 339 340 bool done_processing_current_plan = false; 341 342 if (!current_plan->PlanExplainsStop()) 343 { 344 if (current_plan->TracerExplainsStop()) 345 { 346 done_processing_current_plan = true; 347 should_stop = false; 348 } 349 else 350 { 351 // If the current plan doesn't explain the stop, then, find one that 352 // does and let it handle the situation. 353 ThreadPlan *plan_ptr = current_plan; 354 while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL) 355 { 356 if (plan_ptr->PlanExplainsStop()) 357 { 358 should_stop = plan_ptr->ShouldStop (event_ptr); 359 360 // plan_ptr explains the stop, next check whether plan_ptr is done, if so, then we should take it 361 // and all the plans below it off the stack. 362 363 if (plan_ptr->MischiefManaged()) 364 { 365 // We're going to pop the plans up to AND INCLUDING the plan that explains the stop. 366 plan_ptr = GetPreviousPlan(plan_ptr); 367 368 do 369 { 370 if (should_stop) 371 current_plan->WillStop(); 372 PopPlan(); 373 } 374 while ((current_plan = GetCurrentPlan()) != plan_ptr); 375 done_processing_current_plan = false; 376 } 377 else 378 done_processing_current_plan = true; 379 380 break; 381 } 382 383 } 384 } 385 } 386 387 if (!done_processing_current_plan) 388 { 389 bool over_ride_stop = current_plan->ShouldAutoContinue(event_ptr); 390 391 if (log) 392 log->Printf("Plan %s explains stop, auto-continue %i.", current_plan->GetName(), over_ride_stop); 393 394 // We're starting from the base plan, so just let it decide; 395 if (PlanIsBasePlan(current_plan)) 396 { 397 should_stop = current_plan->ShouldStop (event_ptr); 398 if (log) 399 log->Printf("Base plan says should stop: %i.", should_stop); 400 } 401 else 402 { 403 // Otherwise, don't let the base plan override what the other plans say to do, since 404 // presumably if there were other plans they would know what to do... 405 while (1) 406 { 407 if (PlanIsBasePlan(current_plan)) 408 break; 409 410 should_stop = current_plan->ShouldStop(event_ptr); 411 if (log) 412 log->Printf("Plan %s should stop: %d.", current_plan->GetName(), should_stop); 413 if (current_plan->MischiefManaged()) 414 { 415 if (should_stop) 416 current_plan->WillStop(); 417 418 // If a Master Plan wants to stop, and wants to stick on the stack, we let it. 419 // Otherwise, see if the plan's parent wants to stop. 420 421 if (should_stop && current_plan->IsMasterPlan() && !current_plan->OkayToDiscard()) 422 { 423 PopPlan(); 424 break; 425 } 426 else 427 { 428 429 PopPlan(); 430 431 current_plan = GetCurrentPlan(); 432 if (current_plan == NULL) 433 { 434 break; 435 } 436 } 437 438 } 439 else 440 { 441 break; 442 } 443 } 444 } 445 if (over_ride_stop) 446 should_stop = false; 447 } 448 449 if (log) 450 { 451 StreamString s; 452 s.IndentMore(); 453 DumpThreadPlans(&s); 454 log->Printf ("Plan stack final state:\n%s", s.GetData()); 455 log->Printf ("vvvvvvvv Thread::ShouldStop End (returning %i) vvvvvvvv", should_stop); 456 } 457 return should_stop; 458 } 459 460 Vote 461 Thread::ShouldReportStop (Event* event_ptr) 462 { 463 StateType thread_state = GetResumeState (); 464 StateType temp_thread_state = GetTemporaryResumeState(); 465 466 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 467 468 if (thread_state == eStateSuspended || thread_state == eStateInvalid) 469 { 470 if (log) 471 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote %i (state was suspended or invalid)\n", GetID(), eVoteNoOpinion); 472 return eVoteNoOpinion; 473 } 474 475 if (temp_thread_state == eStateSuspended || temp_thread_state == eStateInvalid) 476 { 477 if (log) 478 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote %i (temporary state was suspended or invalid)\n", GetID(), eVoteNoOpinion); 479 return eVoteNoOpinion; 480 } 481 482 if (!ThreadStoppedForAReason()) 483 { 484 if (log) 485 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote %i (thread didn't stop for a reason.)\n", GetID(), eVoteNoOpinion); 486 return eVoteNoOpinion; 487 } 488 489 if (m_completed_plan_stack.size() > 0) 490 { 491 // Don't use GetCompletedPlan here, since that suppresses private plans. 492 if (log) 493 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote for complete stack's back plan\n", GetID()); 494 return m_completed_plan_stack.back()->ShouldReportStop (event_ptr); 495 } 496 else 497 { 498 if (log) 499 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote for current plan\n", GetID()); 500 return GetCurrentPlan()->ShouldReportStop (event_ptr); 501 } 502 } 503 504 Vote 505 Thread::ShouldReportRun (Event* event_ptr) 506 { 507 StateType thread_state = GetResumeState (); 508 509 if (thread_state == eStateSuspended 510 || thread_state == eStateInvalid) 511 { 512 return eVoteNoOpinion; 513 } 514 515 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 516 if (m_completed_plan_stack.size() > 0) 517 { 518 // Don't use GetCompletedPlan here, since that suppresses private plans. 519 if (log) 520 log->Printf ("Current Plan for thread %d (0x%4.4llx): %s being asked whether we should report run.", 521 GetIndexID(), 522 GetID(), 523 m_completed_plan_stack.back()->GetName()); 524 525 return m_completed_plan_stack.back()->ShouldReportRun (event_ptr); 526 } 527 else 528 { 529 if (log) 530 log->Printf ("Current Plan for thread %d (0x%4.4llx): %s being asked whether we should report run.", 531 GetIndexID(), 532 GetID(), 533 GetCurrentPlan()->GetName()); 534 535 return GetCurrentPlan()->ShouldReportRun (event_ptr); 536 } 537 } 538 539 bool 540 Thread::MatchesSpec (const ThreadSpec *spec) 541 { 542 if (spec == NULL) 543 return true; 544 545 return spec->ThreadPassesBasicTests(this); 546 } 547 548 void 549 Thread::PushPlan (ThreadPlanSP &thread_plan_sp) 550 { 551 if (thread_plan_sp) 552 { 553 // If the thread plan doesn't already have a tracer, give it its parent's tracer: 554 if (!thread_plan_sp->GetThreadPlanTracer()) 555 thread_plan_sp->SetThreadPlanTracer(m_plan_stack.back()->GetThreadPlanTracer()); 556 m_plan_stack.push_back (thread_plan_sp); 557 558 thread_plan_sp->DidPush(); 559 560 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 561 if (log) 562 { 563 StreamString s; 564 thread_plan_sp->GetDescription (&s, lldb::eDescriptionLevelFull); 565 log->Printf("Pushing plan: \"%s\", tid = 0x%4.4llx.", 566 s.GetData(), 567 thread_plan_sp->GetThread().GetID()); 568 } 569 } 570 } 571 572 void 573 Thread::PopPlan () 574 { 575 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 576 577 if (m_plan_stack.empty()) 578 return; 579 else 580 { 581 ThreadPlanSP &plan = m_plan_stack.back(); 582 if (log) 583 { 584 log->Printf("Popping plan: \"%s\", tid = 0x%4.4llx.", plan->GetName(), plan->GetThread().GetID()); 585 } 586 m_completed_plan_stack.push_back (plan); 587 plan->WillPop(); 588 m_plan_stack.pop_back(); 589 } 590 } 591 592 void 593 Thread::DiscardPlan () 594 { 595 if (m_plan_stack.size() > 1) 596 { 597 ThreadPlanSP &plan = m_plan_stack.back(); 598 m_discarded_plan_stack.push_back (plan); 599 plan->WillPop(); 600 m_plan_stack.pop_back(); 601 } 602 } 603 604 ThreadPlan * 605 Thread::GetCurrentPlan () 606 { 607 if (m_plan_stack.empty()) 608 return NULL; 609 else 610 return m_plan_stack.back().get(); 611 } 612 613 ThreadPlanSP 614 Thread::GetCompletedPlan () 615 { 616 ThreadPlanSP empty_plan_sp; 617 if (!m_completed_plan_stack.empty()) 618 { 619 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 620 { 621 ThreadPlanSP completed_plan_sp; 622 completed_plan_sp = m_completed_plan_stack[i]; 623 if (!completed_plan_sp->GetPrivate ()) 624 return completed_plan_sp; 625 } 626 } 627 return empty_plan_sp; 628 } 629 630 ValueObjectSP 631 Thread::GetReturnValueObject () 632 { 633 if (!m_completed_plan_stack.empty()) 634 { 635 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 636 { 637 ValueObjectSP return_valobj_sp; 638 return_valobj_sp = m_completed_plan_stack[i]->GetReturnValueObject(); 639 if (return_valobj_sp) 640 return return_valobj_sp; 641 } 642 } 643 return ValueObjectSP(); 644 } 645 646 bool 647 Thread::IsThreadPlanDone (ThreadPlan *plan) 648 { 649 if (!m_completed_plan_stack.empty()) 650 { 651 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 652 { 653 if (m_completed_plan_stack[i].get() == plan) 654 return true; 655 } 656 } 657 return false; 658 } 659 660 bool 661 Thread::WasThreadPlanDiscarded (ThreadPlan *plan) 662 { 663 if (!m_discarded_plan_stack.empty()) 664 { 665 for (int i = m_discarded_plan_stack.size() - 1; i >= 0; i--) 666 { 667 if (m_discarded_plan_stack[i].get() == plan) 668 return true; 669 } 670 } 671 return false; 672 } 673 674 ThreadPlan * 675 Thread::GetPreviousPlan (ThreadPlan *current_plan) 676 { 677 if (current_plan == NULL) 678 return NULL; 679 680 int stack_size = m_completed_plan_stack.size(); 681 for (int i = stack_size - 1; i > 0; i--) 682 { 683 if (current_plan == m_completed_plan_stack[i].get()) 684 return m_completed_plan_stack[i-1].get(); 685 } 686 687 if (stack_size > 0 && m_completed_plan_stack[0].get() == current_plan) 688 { 689 if (m_plan_stack.size() > 0) 690 return m_plan_stack.back().get(); 691 else 692 return NULL; 693 } 694 695 stack_size = m_plan_stack.size(); 696 for (int i = stack_size - 1; i > 0; i--) 697 { 698 if (current_plan == m_plan_stack[i].get()) 699 return m_plan_stack[i-1].get(); 700 } 701 return NULL; 702 } 703 704 void 705 Thread::QueueThreadPlan (ThreadPlanSP &thread_plan_sp, bool abort_other_plans) 706 { 707 if (abort_other_plans) 708 DiscardThreadPlans(true); 709 710 PushPlan (thread_plan_sp); 711 } 712 713 714 void 715 Thread::EnableTracer (bool value, bool single_stepping) 716 { 717 int stack_size = m_plan_stack.size(); 718 for (int i = 0; i < stack_size; i++) 719 { 720 if (m_plan_stack[i]->GetThreadPlanTracer()) 721 { 722 m_plan_stack[i]->GetThreadPlanTracer()->EnableTracing(value); 723 m_plan_stack[i]->GetThreadPlanTracer()->EnableSingleStep(single_stepping); 724 } 725 } 726 } 727 728 void 729 Thread::SetTracer (lldb::ThreadPlanTracerSP &tracer_sp) 730 { 731 int stack_size = m_plan_stack.size(); 732 for (int i = 0; i < stack_size; i++) 733 m_plan_stack[i]->SetThreadPlanTracer(tracer_sp); 734 } 735 736 void 737 Thread::DiscardThreadPlansUpToPlan (lldb::ThreadPlanSP &up_to_plan_sp) 738 { 739 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 740 if (log) 741 { 742 log->Printf("Discarding thread plans for thread tid = 0x%4.4llx, up to %p", GetID(), up_to_plan_sp.get()); 743 } 744 745 int stack_size = m_plan_stack.size(); 746 747 // If the input plan is NULL, discard all plans. Otherwise make sure this plan is in the 748 // stack, and if so discard up to and including it. 749 750 if (up_to_plan_sp.get() == NULL) 751 { 752 for (int i = stack_size - 1; i > 0; i--) 753 DiscardPlan(); 754 } 755 else 756 { 757 bool found_it = false; 758 for (int i = stack_size - 1; i > 0; i--) 759 { 760 if (m_plan_stack[i] == up_to_plan_sp) 761 found_it = true; 762 } 763 if (found_it) 764 { 765 bool last_one = false; 766 for (int i = stack_size - 1; i > 0 && !last_one ; i--) 767 { 768 if (GetCurrentPlan() == up_to_plan_sp.get()) 769 last_one = true; 770 DiscardPlan(); 771 } 772 } 773 } 774 return; 775 } 776 777 void 778 Thread::DiscardThreadPlans(bool force) 779 { 780 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 781 if (log) 782 { 783 log->Printf("Discarding thread plans for thread (tid = 0x%4.4llx, force %d)", GetID(), force); 784 } 785 786 if (force) 787 { 788 int stack_size = m_plan_stack.size(); 789 for (int i = stack_size - 1; i > 0; i--) 790 { 791 DiscardPlan(); 792 } 793 return; 794 } 795 796 while (1) 797 { 798 799 int master_plan_idx; 800 bool discard; 801 802 // Find the first master plan, see if it wants discarding, and if yes discard up to it. 803 for (master_plan_idx = m_plan_stack.size() - 1; master_plan_idx >= 0; master_plan_idx--) 804 { 805 if (m_plan_stack[master_plan_idx]->IsMasterPlan()) 806 { 807 discard = m_plan_stack[master_plan_idx]->OkayToDiscard(); 808 break; 809 } 810 } 811 812 if (discard) 813 { 814 // First pop all the dependent plans: 815 for (int i = m_plan_stack.size() - 1; i > master_plan_idx; i--) 816 { 817 818 // FIXME: Do we need a finalize here, or is the rule that "PrepareForStop" 819 // for the plan leaves it in a state that it is safe to pop the plan 820 // with no more notice? 821 DiscardPlan(); 822 } 823 824 // Now discard the master plan itself. 825 // The bottom-most plan never gets discarded. "OkayToDiscard" for it means 826 // discard it's dependent plans, but not it... 827 if (master_plan_idx > 0) 828 { 829 DiscardPlan(); 830 } 831 } 832 else 833 { 834 // If the master plan doesn't want to get discarded, then we're done. 835 break; 836 } 837 838 } 839 } 840 841 ThreadPlan * 842 Thread::QueueFundamentalPlan (bool abort_other_plans) 843 { 844 ThreadPlanSP thread_plan_sp (new ThreadPlanBase(*this)); 845 QueueThreadPlan (thread_plan_sp, abort_other_plans); 846 return thread_plan_sp.get(); 847 } 848 849 ThreadPlan * 850 Thread::QueueThreadPlanForStepSingleInstruction 851 ( 852 bool step_over, 853 bool abort_other_plans, 854 bool stop_other_threads 855 ) 856 { 857 ThreadPlanSP thread_plan_sp (new ThreadPlanStepInstruction (*this, step_over, stop_other_threads, eVoteNoOpinion, eVoteNoOpinion)); 858 QueueThreadPlan (thread_plan_sp, abort_other_plans); 859 return thread_plan_sp.get(); 860 } 861 862 ThreadPlan * 863 Thread::QueueThreadPlanForStepRange 864 ( 865 bool abort_other_plans, 866 StepType type, 867 const AddressRange &range, 868 const SymbolContext &addr_context, 869 lldb::RunMode stop_other_threads, 870 bool avoid_code_without_debug_info 871 ) 872 { 873 ThreadPlanSP thread_plan_sp; 874 if (type == eStepTypeInto) 875 { 876 ThreadPlanStepInRange *plan = new ThreadPlanStepInRange (*this, range, addr_context, stop_other_threads); 877 if (avoid_code_without_debug_info) 878 plan->GetFlags().Set (ThreadPlanShouldStopHere::eAvoidNoDebug); 879 else 880 plan->GetFlags().Clear (ThreadPlanShouldStopHere::eAvoidNoDebug); 881 thread_plan_sp.reset (plan); 882 } 883 else 884 thread_plan_sp.reset (new ThreadPlanStepOverRange (*this, range, addr_context, stop_other_threads)); 885 886 QueueThreadPlan (thread_plan_sp, abort_other_plans); 887 return thread_plan_sp.get(); 888 } 889 890 891 ThreadPlan * 892 Thread::QueueThreadPlanForStepOverBreakpointPlan (bool abort_other_plans) 893 { 894 ThreadPlanSP thread_plan_sp (new ThreadPlanStepOverBreakpoint (*this)); 895 QueueThreadPlan (thread_plan_sp, abort_other_plans); 896 return thread_plan_sp.get(); 897 } 898 899 ThreadPlan * 900 Thread::QueueThreadPlanForStepOut 901 ( 902 bool abort_other_plans, 903 SymbolContext *addr_context, 904 bool first_insn, 905 bool stop_other_threads, 906 Vote stop_vote, 907 Vote run_vote, 908 uint32_t frame_idx 909 ) 910 { 911 ThreadPlanSP thread_plan_sp (new ThreadPlanStepOut (*this, 912 addr_context, 913 first_insn, 914 stop_other_threads, 915 stop_vote, 916 run_vote, 917 frame_idx)); 918 QueueThreadPlan (thread_plan_sp, abort_other_plans); 919 return thread_plan_sp.get(); 920 } 921 922 ThreadPlan * 923 Thread::QueueThreadPlanForStepThrough (bool abort_other_plans, bool stop_other_threads) 924 { 925 ThreadPlanSP thread_plan_sp(new ThreadPlanStepThrough (*this, stop_other_threads)); 926 if (!thread_plan_sp || !thread_plan_sp->ValidatePlan (NULL)) 927 return NULL; 928 929 QueueThreadPlan (thread_plan_sp, abort_other_plans); 930 return thread_plan_sp.get(); 931 } 932 933 ThreadPlan * 934 Thread::QueueThreadPlanForCallFunction (bool abort_other_plans, 935 Address& function, 936 lldb::addr_t arg, 937 bool stop_other_threads, 938 bool discard_on_error) 939 { 940 ThreadPlanSP thread_plan_sp (new ThreadPlanCallFunction (*this, function, ClangASTType(), arg, stop_other_threads, discard_on_error)); 941 QueueThreadPlan (thread_plan_sp, abort_other_plans); 942 return thread_plan_sp.get(); 943 } 944 945 ThreadPlan * 946 Thread::QueueThreadPlanForRunToAddress (bool abort_other_plans, 947 Address &target_addr, 948 bool stop_other_threads) 949 { 950 ThreadPlanSP thread_plan_sp (new ThreadPlanRunToAddress (*this, target_addr, stop_other_threads)); 951 QueueThreadPlan (thread_plan_sp, abort_other_plans); 952 return thread_plan_sp.get(); 953 } 954 955 ThreadPlan * 956 Thread::QueueThreadPlanForStepUntil (bool abort_other_plans, 957 lldb::addr_t *address_list, 958 size_t num_addresses, 959 bool stop_other_threads, 960 uint32_t frame_idx) 961 { 962 ThreadPlanSP thread_plan_sp (new ThreadPlanStepUntil (*this, address_list, num_addresses, stop_other_threads, frame_idx)); 963 QueueThreadPlan (thread_plan_sp, abort_other_plans); 964 return thread_plan_sp.get(); 965 966 } 967 968 uint32_t 969 Thread::GetIndexID () const 970 { 971 return m_index_id; 972 } 973 974 void 975 Thread::DumpThreadPlans (lldb_private::Stream *s) const 976 { 977 uint32_t stack_size = m_plan_stack.size(); 978 int i; 979 s->Indent(); 980 s->Printf ("Plan Stack for thread #%u: tid = 0x%4.4llx, stack_size = %d\n", GetIndexID(), GetID(), stack_size); 981 for (i = stack_size - 1; i >= 0; i--) 982 { 983 s->IndentMore(); 984 s->Indent(); 985 s->Printf ("Element %d: ", i); 986 m_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 987 s->EOL(); 988 s->IndentLess(); 989 } 990 991 stack_size = m_completed_plan_stack.size(); 992 if (stack_size > 0) 993 { 994 s->Indent(); 995 s->Printf ("Completed Plan Stack: %d elements.\n", stack_size); 996 for (i = stack_size - 1; i >= 0; i--) 997 { 998 s->IndentMore(); 999 s->Indent(); 1000 s->Printf ("Element %d: ", i); 1001 m_completed_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 1002 s->EOL(); 1003 s->IndentLess(); 1004 } 1005 } 1006 1007 stack_size = m_discarded_plan_stack.size(); 1008 if (stack_size > 0) 1009 { 1010 s->Indent(); 1011 s->Printf ("Discarded Plan Stack: %d elements.\n", stack_size); 1012 for (i = stack_size - 1; i >= 0; i--) 1013 { 1014 s->IndentMore(); 1015 s->Indent(); 1016 s->Printf ("Element %d: ", i); 1017 m_discarded_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 1018 s->EOL(); 1019 s->IndentLess(); 1020 } 1021 } 1022 1023 } 1024 1025 TargetSP 1026 Thread::CalculateTarget () 1027 { 1028 TargetSP target_sp; 1029 ProcessSP process_sp(GetProcess()); 1030 if (process_sp) 1031 target_sp = process_sp->CalculateTarget(); 1032 return target_sp; 1033 1034 } 1035 1036 ProcessSP 1037 Thread::CalculateProcess () 1038 { 1039 return GetProcess(); 1040 } 1041 1042 ThreadSP 1043 Thread::CalculateThread () 1044 { 1045 return shared_from_this(); 1046 } 1047 1048 StackFrameSP 1049 Thread::CalculateStackFrame () 1050 { 1051 return StackFrameSP(); 1052 } 1053 1054 void 1055 Thread::CalculateExecutionContext (ExecutionContext &exe_ctx) 1056 { 1057 exe_ctx.SetContext (shared_from_this()); 1058 } 1059 1060 1061 StackFrameList & 1062 Thread::GetStackFrameList () 1063 { 1064 if (!m_curr_frames_sp) 1065 m_curr_frames_sp.reset (new StackFrameList (*this, m_prev_frames_sp, true)); 1066 return *m_curr_frames_sp; 1067 } 1068 1069 void 1070 Thread::ClearStackFrames () 1071 { 1072 if (m_curr_frames_sp && m_curr_frames_sp->GetNumFrames (false) > 1) 1073 m_prev_frames_sp.swap (m_curr_frames_sp); 1074 m_curr_frames_sp.reset(); 1075 } 1076 1077 lldb::StackFrameSP 1078 Thread::GetFrameWithConcreteFrameIndex (uint32_t unwind_idx) 1079 { 1080 return GetStackFrameList().GetFrameWithConcreteFrameIndex (unwind_idx); 1081 } 1082 1083 void 1084 Thread::DumpUsingSettingsFormat (Stream &strm, uint32_t frame_idx) 1085 { 1086 ExecutionContext exe_ctx (shared_from_this()); 1087 Process *process = exe_ctx.GetProcessPtr(); 1088 if (process == NULL) 1089 return; 1090 1091 StackFrameSP frame_sp; 1092 SymbolContext frame_sc; 1093 if (frame_idx != LLDB_INVALID_INDEX32) 1094 { 1095 frame_sp = GetStackFrameAtIndex (frame_idx); 1096 if (frame_sp) 1097 { 1098 exe_ctx.SetFrameSP(frame_sp); 1099 frame_sc = frame_sp->GetSymbolContext(eSymbolContextEverything); 1100 } 1101 } 1102 1103 const char *thread_format = exe_ctx.GetTargetRef().GetDebugger().GetThreadFormat(); 1104 assert (thread_format); 1105 const char *end = NULL; 1106 Debugger::FormatPrompt (thread_format, 1107 frame_sp ? &frame_sc : NULL, 1108 &exe_ctx, 1109 NULL, 1110 strm, 1111 &end); 1112 } 1113 1114 void 1115 Thread::SettingsInitialize () 1116 { 1117 UserSettingsController::InitializeSettingsController (GetSettingsController(), 1118 SettingsController::global_settings_table, 1119 SettingsController::instance_settings_table); 1120 1121 // Now call SettingsInitialize() on each 'child' setting of Thread. 1122 // Currently there are none. 1123 } 1124 1125 void 1126 Thread::SettingsTerminate () 1127 { 1128 // Must call SettingsTerminate() on each 'child' setting of Thread before terminating Thread settings. 1129 // Currently there are none. 1130 1131 // Now terminate Thread Settings. 1132 1133 UserSettingsControllerSP &usc = GetSettingsController(); 1134 UserSettingsController::FinalizeSettingsController (usc); 1135 usc.reset(); 1136 } 1137 1138 UserSettingsControllerSP & 1139 Thread::GetSettingsController () 1140 { 1141 static UserSettingsControllerSP g_settings_controller_sp; 1142 if (!g_settings_controller_sp) 1143 { 1144 g_settings_controller_sp.reset (new Thread::SettingsController); 1145 // The first shared pointer to Target::SettingsController in 1146 // g_settings_controller_sp must be fully created above so that 1147 // the TargetInstanceSettings can use a weak_ptr to refer back 1148 // to the master setttings controller 1149 InstanceSettingsSP default_instance_settings_sp (new ThreadInstanceSettings (g_settings_controller_sp, 1150 false, 1151 InstanceSettings::GetDefaultName().AsCString())); 1152 1153 g_settings_controller_sp->SetDefaultInstanceSettings (default_instance_settings_sp); 1154 } 1155 return g_settings_controller_sp; 1156 } 1157 1158 void 1159 Thread::UpdateInstanceName () 1160 { 1161 StreamString sstr; 1162 const char *name = GetName(); 1163 1164 if (name && name[0] != '\0') 1165 sstr.Printf ("%s", name); 1166 else if ((GetIndexID() != 0) || (GetID() != 0)) 1167 sstr.Printf ("0x%4.4x", GetIndexID()); 1168 1169 if (sstr.GetSize() > 0) 1170 Thread::GetSettingsController()->RenameInstanceSettings (GetInstanceName().AsCString(), sstr.GetData()); 1171 } 1172 1173 lldb::StackFrameSP 1174 Thread::GetStackFrameSPForStackFramePtr (StackFrame *stack_frame_ptr) 1175 { 1176 return GetStackFrameList().GetStackFrameSPForStackFramePtr (stack_frame_ptr); 1177 } 1178 1179 const char * 1180 Thread::StopReasonAsCString (lldb::StopReason reason) 1181 { 1182 switch (reason) 1183 { 1184 case eStopReasonInvalid: return "invalid"; 1185 case eStopReasonNone: return "none"; 1186 case eStopReasonTrace: return "trace"; 1187 case eStopReasonBreakpoint: return "breakpoint"; 1188 case eStopReasonWatchpoint: return "watchpoint"; 1189 case eStopReasonSignal: return "signal"; 1190 case eStopReasonException: return "exception"; 1191 case eStopReasonPlanComplete: return "plan complete"; 1192 } 1193 1194 1195 static char unknown_state_string[64]; 1196 snprintf(unknown_state_string, sizeof (unknown_state_string), "StopReason = %i", reason); 1197 return unknown_state_string; 1198 } 1199 1200 const char * 1201 Thread::RunModeAsCString (lldb::RunMode mode) 1202 { 1203 switch (mode) 1204 { 1205 case eOnlyThisThread: return "only this thread"; 1206 case eAllThreads: return "all threads"; 1207 case eOnlyDuringStepping: return "only during stepping"; 1208 } 1209 1210 static char unknown_state_string[64]; 1211 snprintf(unknown_state_string, sizeof (unknown_state_string), "RunMode = %i", mode); 1212 return unknown_state_string; 1213 } 1214 1215 size_t 1216 Thread::GetStatus (Stream &strm, uint32_t start_frame, uint32_t num_frames, uint32_t num_frames_with_source) 1217 { 1218 ExecutionContext exe_ctx (shared_from_this()); 1219 Target *target = exe_ctx.GetTargetPtr(); 1220 Process *process = exe_ctx.GetProcessPtr(); 1221 size_t num_frames_shown = 0; 1222 strm.Indent(); 1223 bool is_selected = false; 1224 if (process) 1225 { 1226 if (process->GetThreadList().GetSelectedThread().get() == this) 1227 is_selected = true; 1228 } 1229 strm.Printf("%c ", is_selected ? '*' : ' '); 1230 if (target && target->GetDebugger().GetUseExternalEditor()) 1231 { 1232 StackFrameSP frame_sp = GetStackFrameAtIndex(start_frame); 1233 if (frame_sp) 1234 { 1235 SymbolContext frame_sc(frame_sp->GetSymbolContext (eSymbolContextLineEntry)); 1236 if (frame_sc.line_entry.line != 0 && frame_sc.line_entry.file) 1237 { 1238 Host::OpenFileInExternalEditor (frame_sc.line_entry.file, frame_sc.line_entry.line); 1239 } 1240 } 1241 } 1242 1243 DumpUsingSettingsFormat (strm, start_frame); 1244 1245 if (num_frames > 0) 1246 { 1247 strm.IndentMore(); 1248 1249 const bool show_frame_info = true; 1250 const uint32_t source_lines_before = 3; 1251 const uint32_t source_lines_after = 3; 1252 strm.IndentMore (); 1253 num_frames_shown = GetStackFrameList ().GetStatus (strm, 1254 start_frame, 1255 num_frames, 1256 show_frame_info, 1257 num_frames_with_source, 1258 source_lines_before, 1259 source_lines_after); 1260 strm.IndentLess(); 1261 strm.IndentLess(); 1262 } 1263 return num_frames_shown; 1264 } 1265 1266 size_t 1267 Thread::GetStackFrameStatus (Stream& strm, 1268 uint32_t first_frame, 1269 uint32_t num_frames, 1270 bool show_frame_info, 1271 uint32_t num_frames_with_source, 1272 uint32_t source_lines_before, 1273 uint32_t source_lines_after) 1274 { 1275 return GetStackFrameList().GetStatus (strm, 1276 first_frame, 1277 num_frames, 1278 show_frame_info, 1279 num_frames_with_source, 1280 source_lines_before, 1281 source_lines_after); 1282 } 1283 1284 bool 1285 Thread::SaveFrameZeroState (RegisterCheckpoint &checkpoint) 1286 { 1287 lldb::StackFrameSP frame_sp(GetStackFrameAtIndex (0)); 1288 if (frame_sp) 1289 { 1290 checkpoint.SetStackID(frame_sp->GetStackID()); 1291 return frame_sp->GetRegisterContext()->ReadAllRegisterValues (checkpoint.GetData()); 1292 } 1293 return false; 1294 } 1295 1296 bool 1297 Thread::RestoreSaveFrameZero (const RegisterCheckpoint &checkpoint) 1298 { 1299 lldb::StackFrameSP frame_sp(GetStackFrameAtIndex (0)); 1300 if (frame_sp) 1301 { 1302 bool ret = frame_sp->GetRegisterContext()->WriteAllRegisterValues (checkpoint.GetData()); 1303 1304 // Clear out all stack frames as our world just changed. 1305 ClearStackFrames(); 1306 frame_sp->GetRegisterContext()->InvalidateIfNeeded(true); 1307 1308 return ret; 1309 } 1310 return false; 1311 } 1312 1313 Unwind * 1314 Thread::GetUnwinder () 1315 { 1316 if (m_unwinder_ap.get() == NULL) 1317 { 1318 const ArchSpec target_arch (CalculateTarget()->GetArchitecture ()); 1319 const llvm::Triple::ArchType machine = target_arch.GetMachine(); 1320 switch (machine) 1321 { 1322 case llvm::Triple::x86_64: 1323 case llvm::Triple::x86: 1324 case llvm::Triple::arm: 1325 case llvm::Triple::thumb: 1326 m_unwinder_ap.reset (new UnwindLLDB (*this)); 1327 break; 1328 1329 default: 1330 if (target_arch.GetTriple().getVendor() == llvm::Triple::Apple) 1331 m_unwinder_ap.reset (new UnwindMacOSXFrameBackchain (*this)); 1332 break; 1333 } 1334 } 1335 return m_unwinder_ap.get(); 1336 } 1337 1338 1339 #pragma mark "Thread::SettingsController" 1340 //-------------------------------------------------------------- 1341 // class Thread::SettingsController 1342 //-------------------------------------------------------------- 1343 1344 Thread::SettingsController::SettingsController () : 1345 UserSettingsController ("thread", Process::GetSettingsController()) 1346 { 1347 } 1348 1349 Thread::SettingsController::~SettingsController () 1350 { 1351 } 1352 1353 lldb::InstanceSettingsSP 1354 Thread::SettingsController::CreateInstanceSettings (const char *instance_name) 1355 { 1356 lldb::InstanceSettingsSP new_settings_sp (new ThreadInstanceSettings (GetSettingsController(), 1357 false, 1358 instance_name)); 1359 return new_settings_sp; 1360 } 1361 1362 #pragma mark "ThreadInstanceSettings" 1363 //-------------------------------------------------------------- 1364 // class ThreadInstanceSettings 1365 //-------------------------------------------------------------- 1366 1367 ThreadInstanceSettings::ThreadInstanceSettings (const UserSettingsControllerSP &owner_sp, bool live_instance, const char *name) : 1368 InstanceSettings (owner_sp, name ? name : InstanceSettings::InvalidName().AsCString(), live_instance), 1369 m_avoid_regexp_ap (), 1370 m_trace_enabled (false) 1371 { 1372 // CopyInstanceSettings is a pure virtual function in InstanceSettings; it therefore cannot be called 1373 // until the vtables for ThreadInstanceSettings are properly set up, i.e. AFTER all the initializers. 1374 // For this reason it has to be called here, rather than in the initializer or in the parent constructor. 1375 // This is true for CreateInstanceName() too. 1376 1377 if (GetInstanceName() == InstanceSettings::InvalidName()) 1378 { 1379 ChangeInstanceName (std::string (CreateInstanceName().AsCString())); 1380 owner_sp->RegisterInstanceSettings (this); 1381 } 1382 1383 if (live_instance) 1384 { 1385 CopyInstanceSettings (owner_sp->FindPendingSettings (m_instance_name),false); 1386 } 1387 } 1388 1389 ThreadInstanceSettings::ThreadInstanceSettings (const ThreadInstanceSettings &rhs) : 1390 InstanceSettings (Thread::GetSettingsController(), CreateInstanceName().AsCString()), 1391 m_avoid_regexp_ap (), 1392 m_trace_enabled (rhs.m_trace_enabled) 1393 { 1394 if (m_instance_name != InstanceSettings::GetDefaultName()) 1395 { 1396 UserSettingsControllerSP owner_sp (m_owner_wp.lock()); 1397 if (owner_sp) 1398 { 1399 CopyInstanceSettings (owner_sp->FindPendingSettings (m_instance_name), false); 1400 owner_sp->RemovePendingSettings (m_instance_name); 1401 } 1402 } 1403 if (rhs.m_avoid_regexp_ap.get() != NULL) 1404 m_avoid_regexp_ap.reset(new RegularExpression(rhs.m_avoid_regexp_ap->GetText())); 1405 } 1406 1407 ThreadInstanceSettings::~ThreadInstanceSettings () 1408 { 1409 } 1410 1411 ThreadInstanceSettings& 1412 ThreadInstanceSettings::operator= (const ThreadInstanceSettings &rhs) 1413 { 1414 if (this != &rhs) 1415 { 1416 if (rhs.m_avoid_regexp_ap.get() != NULL) 1417 m_avoid_regexp_ap.reset(new RegularExpression(rhs.m_avoid_regexp_ap->GetText())); 1418 else 1419 m_avoid_regexp_ap.reset(NULL); 1420 } 1421 m_trace_enabled = rhs.m_trace_enabled; 1422 return *this; 1423 } 1424 1425 1426 void 1427 ThreadInstanceSettings::UpdateInstanceSettingsVariable (const ConstString &var_name, 1428 const char *index_value, 1429 const char *value, 1430 const ConstString &instance_name, 1431 const SettingEntry &entry, 1432 VarSetOperationType op, 1433 Error &err, 1434 bool pending) 1435 { 1436 if (var_name == StepAvoidRegexpVarName()) 1437 { 1438 std::string regexp_text; 1439 if (m_avoid_regexp_ap.get() != NULL) 1440 regexp_text.append (m_avoid_regexp_ap->GetText()); 1441 UserSettingsController::UpdateStringVariable (op, regexp_text, value, err); 1442 if (regexp_text.empty()) 1443 m_avoid_regexp_ap.reset(); 1444 else 1445 { 1446 m_avoid_regexp_ap.reset(new RegularExpression(regexp_text.c_str())); 1447 1448 } 1449 } 1450 else if (var_name == GetTraceThreadVarName()) 1451 { 1452 bool success; 1453 bool result = Args::StringToBoolean(value, false, &success); 1454 1455 if (success) 1456 { 1457 m_trace_enabled = result; 1458 if (!pending) 1459 { 1460 Thread *myself = static_cast<Thread *> (this); 1461 myself->EnableTracer(m_trace_enabled, true); 1462 } 1463 } 1464 else 1465 { 1466 err.SetErrorStringWithFormat ("Bad value \"%s\" for trace-thread, should be Boolean.", value); 1467 } 1468 1469 } 1470 } 1471 1472 void 1473 ThreadInstanceSettings::CopyInstanceSettings (const lldb::InstanceSettingsSP &new_settings, 1474 bool pending) 1475 { 1476 if (new_settings.get() == NULL) 1477 return; 1478 1479 ThreadInstanceSettings *new_process_settings = (ThreadInstanceSettings *) new_settings.get(); 1480 if (new_process_settings->GetSymbolsToAvoidRegexp() != NULL) 1481 m_avoid_regexp_ap.reset (new RegularExpression (new_process_settings->GetSymbolsToAvoidRegexp()->GetText())); 1482 else 1483 m_avoid_regexp_ap.reset (); 1484 } 1485 1486 bool 1487 ThreadInstanceSettings::GetInstanceSettingsValue (const SettingEntry &entry, 1488 const ConstString &var_name, 1489 StringList &value, 1490 Error *err) 1491 { 1492 if (var_name == StepAvoidRegexpVarName()) 1493 { 1494 if (m_avoid_regexp_ap.get() != NULL) 1495 { 1496 std::string regexp_text("\""); 1497 regexp_text.append(m_avoid_regexp_ap->GetText()); 1498 regexp_text.append ("\""); 1499 value.AppendString (regexp_text.c_str()); 1500 } 1501 1502 } 1503 else if (var_name == GetTraceThreadVarName()) 1504 { 1505 value.AppendString(m_trace_enabled ? "true" : "false"); 1506 } 1507 else 1508 { 1509 if (err) 1510 err->SetErrorStringWithFormat ("unrecognized variable name '%s'", var_name.AsCString()); 1511 return false; 1512 } 1513 return true; 1514 } 1515 1516 const ConstString 1517 ThreadInstanceSettings::CreateInstanceName () 1518 { 1519 static int instance_count = 1; 1520 StreamString sstr; 1521 1522 sstr.Printf ("thread_%d", instance_count); 1523 ++instance_count; 1524 1525 const ConstString ret_val (sstr.GetData()); 1526 return ret_val; 1527 } 1528 1529 const ConstString & 1530 ThreadInstanceSettings::StepAvoidRegexpVarName () 1531 { 1532 static ConstString step_avoid_var_name ("step-avoid-regexp"); 1533 1534 return step_avoid_var_name; 1535 } 1536 1537 const ConstString & 1538 ThreadInstanceSettings::GetTraceThreadVarName () 1539 { 1540 static ConstString trace_thread_var_name ("trace-thread"); 1541 1542 return trace_thread_var_name; 1543 } 1544 1545 //-------------------------------------------------- 1546 // SettingsController Variable Tables 1547 //-------------------------------------------------- 1548 1549 SettingEntry 1550 Thread::SettingsController::global_settings_table[] = 1551 { 1552 //{ "var-name", var-type , "default", enum-table, init'd, hidden, "help-text"}, 1553 { NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL } 1554 }; 1555 1556 1557 SettingEntry 1558 Thread::SettingsController::instance_settings_table[] = 1559 { 1560 //{ "var-name", var-type, "default", enum-table, init'd, hidden, "help-text"}, 1561 { "step-avoid-regexp", eSetVarTypeString, "", NULL, false, false, "A regular expression defining functions step-in won't stop in." }, 1562 { "trace-thread", eSetVarTypeBoolean, "false", NULL, false, false, "If true, this thread will single-step and log execution." }, 1563 { NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL } 1564 }; 1565