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-python.h" 11 12#include "lldb/lldb-private-log.h" 13#include "lldb/Breakpoint/BreakpointLocation.h" 14#include "lldb/Core/Debugger.h" 15#include "lldb/Core/Log.h" 16#include "lldb/Core/State.h" 17#include "lldb/Core/Stream.h" 18#include "lldb/Core/StreamString.h" 19#include "lldb/Core/RegularExpression.h" 20#include "lldb/Host/Host.h" 21#include "lldb/Interpreter/OptionValueFileSpecList.h" 22#include "lldb/Symbol/Function.h" 23#include "lldb/Target/DynamicLoader.h" 24#include "lldb/Target/ExecutionContext.h" 25#include "lldb/Target/ObjCLanguageRuntime.h" 26#include "lldb/Target/Process.h" 27#include "lldb/Target/RegisterContext.h" 28#include "lldb/Target/StopInfo.h" 29#include "lldb/Target/Target.h" 30#include "lldb/Target/Thread.h" 31#include "lldb/Target/ThreadPlan.h" 32#include "lldb/Target/ThreadPlanCallFunction.h" 33#include "lldb/Target/ThreadPlanBase.h" 34#include "lldb/Target/ThreadPlanStepInstruction.h" 35#include "lldb/Target/ThreadPlanStepOut.h" 36#include "lldb/Target/ThreadPlanStepOverBreakpoint.h" 37#include "lldb/Target/ThreadPlanStepThrough.h" 38#include "lldb/Target/ThreadPlanStepInRange.h" 39#include "lldb/Target/ThreadPlanStepOverRange.h" 40#include "lldb/Target/ThreadPlanRunToAddress.h" 41#include "lldb/Target/ThreadPlanStepUntil.h" 42#include "lldb/Target/ThreadSpec.h" 43#include "lldb/Target/Unwind.h" 44#include "Plugins/Process/Utility/UnwindLLDB.h" 45#include "UnwindMacOSXFrameBackchain.h" 46 47 48using namespace lldb; 49using namespace lldb_private; 50 51 52const ThreadPropertiesSP & 53Thread::GetGlobalProperties() 54{ 55 static ThreadPropertiesSP g_settings_sp; 56 if (!g_settings_sp) 57 g_settings_sp.reset (new ThreadProperties (true)); 58 return g_settings_sp; 59} 60 61static PropertyDefinition 62g_properties[] = 63{ 64 { "step-avoid-regexp", OptionValue::eTypeRegex , true , REG_EXTENDED, "^std::", NULL, "A regular expression defining functions step-in won't stop in." }, 65 { "step-avoid-libraries", OptionValue::eTypeFileSpecList , true , REG_EXTENDED, NULL, NULL, "A list of libraries that source stepping won't stop in." }, 66 { "trace-thread", OptionValue::eTypeBoolean, false, false, NULL, NULL, "If true, this thread will single-step and log execution." }, 67 { NULL , OptionValue::eTypeInvalid, false, 0 , NULL, NULL, NULL } 68}; 69 70enum { 71 ePropertyStepAvoidRegex, 72 ePropertyStepAvoidLibraries, 73 ePropertyEnableThreadTrace 74}; 75 76 77class ThreadOptionValueProperties : public OptionValueProperties 78{ 79public: 80 ThreadOptionValueProperties (const ConstString &name) : 81 OptionValueProperties (name) 82 { 83 } 84 85 // This constructor is used when creating ThreadOptionValueProperties when it 86 // is part of a new lldb_private::Thread instance. It will copy all current 87 // global property values as needed 88 ThreadOptionValueProperties (ThreadProperties *global_properties) : 89 OptionValueProperties(*global_properties->GetValueProperties()) 90 { 91 } 92 93 virtual const Property * 94 GetPropertyAtIndex (const ExecutionContext *exe_ctx, bool will_modify, uint32_t idx) const 95 { 96 // When gettings the value for a key from the thread options, we will always 97 // try and grab the setting from the current thread if there is one. Else we just 98 // use the one from this instance. 99 if (exe_ctx) 100 { 101 Thread *thread = exe_ctx->GetThreadPtr(); 102 if (thread) 103 { 104 ThreadOptionValueProperties *instance_properties = static_cast<ThreadOptionValueProperties *>(thread->GetValueProperties().get()); 105 if (this != instance_properties) 106 return instance_properties->ProtectedGetPropertyAtIndex (idx); 107 } 108 } 109 return ProtectedGetPropertyAtIndex (idx); 110 } 111}; 112 113 114 115ThreadProperties::ThreadProperties (bool is_global) : 116 Properties () 117{ 118 if (is_global) 119 { 120 m_collection_sp.reset (new ThreadOptionValueProperties(ConstString("thread"))); 121 m_collection_sp->Initialize(g_properties); 122 } 123 else 124 m_collection_sp.reset (new ThreadOptionValueProperties(Thread::GetGlobalProperties().get())); 125} 126 127ThreadProperties::~ThreadProperties() 128{ 129} 130 131const RegularExpression * 132ThreadProperties::GetSymbolsToAvoidRegexp() 133{ 134 const uint32_t idx = ePropertyStepAvoidRegex; 135 return m_collection_sp->GetPropertyAtIndexAsOptionValueRegex (NULL, idx); 136} 137 138FileSpecList & 139ThreadProperties::GetLibrariesToAvoid() const 140{ 141 const uint32_t idx = ePropertyStepAvoidLibraries; 142 OptionValueFileSpecList *option_value = m_collection_sp->GetPropertyAtIndexAsOptionValueFileSpecList (NULL, false, idx); 143 assert(option_value); 144 return option_value->GetCurrentValue(); 145} 146 147bool 148ThreadProperties::GetTraceEnabledState() const 149{ 150 const uint32_t idx = ePropertyEnableThreadTrace; 151 return m_collection_sp->GetPropertyAtIndexAsBoolean (NULL, idx, g_properties[idx].default_uint_value != 0); 152} 153 154//------------------------------------------------------------------ 155// Thread Event Data 156//------------------------------------------------------------------ 157 158 159const ConstString & 160Thread::ThreadEventData::GetFlavorString () 161{ 162 static ConstString g_flavor ("Thread::ThreadEventData"); 163 return g_flavor; 164} 165 166Thread::ThreadEventData::ThreadEventData (const lldb::ThreadSP thread_sp) : 167 m_thread_sp (thread_sp), 168 m_stack_id () 169{ 170} 171 172Thread::ThreadEventData::ThreadEventData (const lldb::ThreadSP thread_sp, const StackID &stack_id) : 173 m_thread_sp (thread_sp), 174 m_stack_id (stack_id) 175{ 176} 177 178Thread::ThreadEventData::ThreadEventData () : 179 m_thread_sp (), 180 m_stack_id () 181{ 182} 183 184Thread::ThreadEventData::~ThreadEventData () 185{ 186} 187 188void 189Thread::ThreadEventData::Dump (Stream *s) const 190{ 191 192} 193 194const Thread::ThreadEventData * 195Thread::ThreadEventData::GetEventDataFromEvent (const Event *event_ptr) 196{ 197 if (event_ptr) 198 { 199 const EventData *event_data = event_ptr->GetData(); 200 if (event_data && event_data->GetFlavor() == ThreadEventData::GetFlavorString()) 201 return static_cast <const ThreadEventData *> (event_ptr->GetData()); 202 } 203 return NULL; 204} 205 206ThreadSP 207Thread::ThreadEventData::GetThreadFromEvent (const Event *event_ptr) 208{ 209 ThreadSP thread_sp; 210 const ThreadEventData *event_data = GetEventDataFromEvent (event_ptr); 211 if (event_data) 212 thread_sp = event_data->GetThread(); 213 return thread_sp; 214} 215 216StackID 217Thread::ThreadEventData::GetStackIDFromEvent (const Event *event_ptr) 218{ 219 StackID stack_id; 220 const ThreadEventData *event_data = GetEventDataFromEvent (event_ptr); 221 if (event_data) 222 stack_id = event_data->GetStackID(); 223 return stack_id; 224} 225 226StackFrameSP 227Thread::ThreadEventData::GetStackFrameFromEvent (const Event *event_ptr) 228{ 229 const ThreadEventData *event_data = GetEventDataFromEvent (event_ptr); 230 StackFrameSP frame_sp; 231 if (event_data) 232 { 233 ThreadSP thread_sp = event_data->GetThread(); 234 if (thread_sp) 235 { 236 frame_sp = thread_sp->GetStackFrameList()->GetFrameWithStackID (event_data->GetStackID()); 237 } 238 } 239 return frame_sp; 240} 241 242//------------------------------------------------------------------ 243// Thread class 244//------------------------------------------------------------------ 245 246ConstString & 247Thread::GetStaticBroadcasterClass () 248{ 249 static ConstString class_name ("lldb.thread"); 250 return class_name; 251} 252 253Thread::Thread (Process &process, lldb::tid_t tid) : 254 ThreadProperties (false), 255 UserID (tid), 256 Broadcaster(&process.GetTarget().GetDebugger(), Thread::GetStaticBroadcasterClass().AsCString()), 257 m_process_wp (process.shared_from_this()), 258 m_stop_info_sp (), 259 m_stop_info_stop_id (0), 260 m_index_id (process.GetNextThreadIndexID(tid)), 261 m_reg_context_sp (), 262 m_state (eStateUnloaded), 263 m_state_mutex (Mutex::eMutexTypeRecursive), 264 m_plan_stack (), 265 m_completed_plan_stack(), 266 m_frame_mutex (Mutex::eMutexTypeRecursive), 267 m_curr_frames_sp (), 268 m_prev_frames_sp (), 269 m_resume_signal (LLDB_INVALID_SIGNAL_NUMBER), 270 m_resume_state (eStateRunning), 271 m_temporary_resume_state (eStateRunning), 272 m_unwinder_ap (), 273 m_destroy_called (false), 274 m_override_should_notify (eLazyBoolCalculate) 275{ 276 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 277 if (log) 278 log->Printf ("%p Thread::Thread(tid = 0x%4.4" PRIx64 ")", this, GetID()); 279 280 CheckInWithManager(); 281 QueueFundamentalPlan(true); 282} 283 284 285Thread::~Thread() 286{ 287 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 288 if (log) 289 log->Printf ("%p Thread::~Thread(tid = 0x%4.4" PRIx64 ")", this, GetID()); 290 /// If you hit this assert, it means your derived class forgot to call DoDestroy in its destructor. 291 assert (m_destroy_called); 292} 293 294void 295Thread::DestroyThread () 296{ 297 // Tell any plans on the plan stacks that the thread is being destroyed since 298 // any plans that have a thread go away in the middle of might need 299 // to do cleanup, or in some cases NOT do cleanup... 300 for (auto plan : m_plan_stack) 301 plan->ThreadDestroyed(); 302 303 for (auto plan : m_discarded_plan_stack) 304 plan->ThreadDestroyed(); 305 306 for (auto plan : m_completed_plan_stack) 307 plan->ThreadDestroyed(); 308 309 m_destroy_called = true; 310 m_plan_stack.clear(); 311 m_discarded_plan_stack.clear(); 312 m_completed_plan_stack.clear(); 313 314 // Push a ThreadPlanNull on the plan stack. That way we can continue assuming that the 315 // plan stack is never empty, but if somebody errantly asks questions of a destroyed thread 316 // without checking first whether it is destroyed, they won't crash. 317 ThreadPlanSP null_plan_sp(new ThreadPlanNull (*this)); 318 m_plan_stack.push_back (null_plan_sp); 319 320 m_stop_info_sp.reset(); 321 m_reg_context_sp.reset(); 322 m_unwinder_ap.reset(); 323 Mutex::Locker locker(m_frame_mutex); 324 m_curr_frames_sp.reset(); 325 m_prev_frames_sp.reset(); 326} 327 328void 329Thread::BroadcastSelectedFrameChange(StackID &new_frame_id) 330{ 331 if (EventTypeHasListeners(eBroadcastBitSelectedFrameChanged)) 332 BroadcastEvent(eBroadcastBitSelectedFrameChanged, new ThreadEventData (this->shared_from_this(), new_frame_id)); 333} 334 335uint32_t 336Thread::SetSelectedFrame (lldb_private::StackFrame *frame, bool broadcast) 337{ 338 uint32_t ret_value = GetStackFrameList()->SetSelectedFrame(frame); 339 if (broadcast) 340 BroadcastSelectedFrameChange(frame->GetStackID()); 341 return ret_value; 342} 343 344bool 345Thread::SetSelectedFrameByIndex (uint32_t frame_idx, bool broadcast) 346{ 347 StackFrameSP frame_sp(GetStackFrameList()->GetFrameAtIndex (frame_idx)); 348 if (frame_sp) 349 { 350 GetStackFrameList()->SetSelectedFrame(frame_sp.get()); 351 if (broadcast) 352 BroadcastSelectedFrameChange(frame_sp->GetStackID()); 353 return true; 354 } 355 else 356 return false; 357} 358 359bool 360Thread::SetSelectedFrameByIndexNoisily (uint32_t frame_idx, Stream &output_stream) 361{ 362 const bool broadcast = true; 363 bool success = SetSelectedFrameByIndex (frame_idx, broadcast); 364 if (success) 365 { 366 StackFrameSP frame_sp = GetSelectedFrame(); 367 if (frame_sp) 368 { 369 bool already_shown = false; 370 SymbolContext frame_sc(frame_sp->GetSymbolContext(eSymbolContextLineEntry)); 371 if (GetProcess()->GetTarget().GetDebugger().GetUseExternalEditor() && frame_sc.line_entry.file && frame_sc.line_entry.line != 0) 372 { 373 already_shown = Host::OpenFileInExternalEditor (frame_sc.line_entry.file, frame_sc.line_entry.line); 374 } 375 376 bool show_frame_info = true; 377 bool show_source = !already_shown; 378 return frame_sp->GetStatus (output_stream, show_frame_info, show_source); 379 } 380 return false; 381 } 382 else 383 return false; 384} 385 386 387lldb::StopInfoSP 388Thread::GetStopInfo () 389{ 390 if (m_destroy_called) 391 return m_stop_info_sp; 392 393 ThreadPlanSP plan_sp (GetCompletedPlan()); 394 ProcessSP process_sp (GetProcess()); 395 const uint32_t stop_id = process_sp ? process_sp->GetStopID() : UINT32_MAX; 396 if (plan_sp && plan_sp->PlanSucceeded()) 397 { 398 return StopInfo::CreateStopReasonWithPlan (plan_sp, GetReturnValueObject()); 399 } 400 else 401 { 402 if ((m_stop_info_stop_id == stop_id) || // Stop info is valid, just return what we have (even if empty) 403 (m_stop_info_sp && m_stop_info_sp->IsValid())) // Stop info is valid, just return what we have 404 { 405 return m_stop_info_sp; 406 } 407 else 408 { 409 GetPrivateStopInfo (); 410 return m_stop_info_sp; 411 } 412 } 413} 414 415lldb::StopInfoSP 416Thread::GetPrivateStopInfo () 417{ 418 if (m_destroy_called) 419 return m_stop_info_sp; 420 421 ProcessSP process_sp (GetProcess()); 422 if (process_sp) 423 { 424 const uint32_t process_stop_id = process_sp->GetStopID(); 425 if (m_stop_info_stop_id != process_stop_id) 426 { 427 if (m_stop_info_sp) 428 { 429 if (m_stop_info_sp->IsValid() 430 || IsStillAtLastBreakpointHit() 431 || GetCurrentPlan()->IsVirtualStep()) 432 SetStopInfo (m_stop_info_sp); 433 else 434 m_stop_info_sp.reset(); 435 } 436 437 if (!m_stop_info_sp) 438 { 439 if (CalculateStopInfo() == false) 440 SetStopInfo (StopInfoSP()); 441 } 442 } 443 } 444 return m_stop_info_sp; 445} 446 447 448lldb::StopReason 449Thread::GetStopReason() 450{ 451 lldb::StopInfoSP stop_info_sp (GetStopInfo ()); 452 if (stop_info_sp) 453 return stop_info_sp->GetStopReason(); 454 return eStopReasonNone; 455} 456 457 458 459void 460Thread::SetStopInfo (const lldb::StopInfoSP &stop_info_sp) 461{ 462 m_stop_info_sp = stop_info_sp; 463 if (m_stop_info_sp) 464 { 465 m_stop_info_sp->MakeStopInfoValid(); 466 // If we are overriding the ShouldReportStop, do that here: 467 if (m_override_should_notify != eLazyBoolCalculate) 468 m_stop_info_sp->OverrideShouldNotify (m_override_should_notify == eLazyBoolYes); 469 } 470 471 ProcessSP process_sp (GetProcess()); 472 if (process_sp) 473 m_stop_info_stop_id = process_sp->GetStopID(); 474 else 475 m_stop_info_stop_id = UINT32_MAX; 476 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_THREAD)); 477 if (log) 478 log->Printf("%p: tid = 0x%" PRIx64 ": stop info = %s (stop_id = %u)\n", this, GetID(), stop_info_sp ? stop_info_sp->GetDescription() : "<NULL>", m_stop_info_stop_id); 479} 480 481void 482Thread::SetShouldReportStop (Vote vote) 483{ 484 if (vote == eVoteNoOpinion) 485 return; 486 else 487 { 488 m_override_should_notify = (vote == eVoteYes ? eLazyBoolYes : eLazyBoolNo); 489 if (m_stop_info_sp) 490 m_stop_info_sp->OverrideShouldNotify (m_override_should_notify == eLazyBoolYes); 491 } 492} 493 494void 495Thread::SetStopInfoToNothing() 496{ 497 // Note, we can't just NULL out the private reason, or the native thread implementation will try to 498 // go calculate it again. For now, just set it to a Unix Signal with an invalid signal number. 499 SetStopInfo (StopInfo::CreateStopReasonWithSignal (*this, LLDB_INVALID_SIGNAL_NUMBER)); 500} 501 502bool 503Thread::ThreadStoppedForAReason (void) 504{ 505 return (bool) GetPrivateStopInfo (); 506} 507 508bool 509Thread::CheckpointThreadState (ThreadStateCheckpoint &saved_state) 510{ 511 saved_state.register_backup_sp.reset(); 512 lldb::StackFrameSP frame_sp(GetStackFrameAtIndex (0)); 513 if (frame_sp) 514 { 515 lldb::RegisterCheckpointSP reg_checkpoint_sp(new RegisterCheckpoint(RegisterCheckpoint::Reason::eExpression)); 516 if (reg_checkpoint_sp) 517 { 518 lldb::RegisterContextSP reg_ctx_sp (frame_sp->GetRegisterContext()); 519 if (reg_ctx_sp && reg_ctx_sp->ReadAllRegisterValues (*reg_checkpoint_sp)) 520 saved_state.register_backup_sp = reg_checkpoint_sp; 521 } 522 } 523 if (!saved_state.register_backup_sp) 524 return false; 525 526 saved_state.stop_info_sp = GetStopInfo(); 527 ProcessSP process_sp (GetProcess()); 528 if (process_sp) 529 saved_state.orig_stop_id = process_sp->GetStopID(); 530 saved_state.current_inlined_depth = GetCurrentInlinedDepth(); 531 532 return true; 533} 534 535bool 536Thread::RestoreRegisterStateFromCheckpoint (ThreadStateCheckpoint &saved_state) 537{ 538 if (saved_state.register_backup_sp) 539 { 540 lldb::StackFrameSP frame_sp(GetStackFrameAtIndex (0)); 541 if (frame_sp) 542 { 543 lldb::RegisterContextSP reg_ctx_sp (frame_sp->GetRegisterContext()); 544 if (reg_ctx_sp) 545 { 546 bool ret = reg_ctx_sp->WriteAllRegisterValues (*saved_state.register_backup_sp); 547 548 // Clear out all stack frames as our world just changed. 549 ClearStackFrames(); 550 reg_ctx_sp->InvalidateIfNeeded(true); 551 if (m_unwinder_ap.get()) 552 m_unwinder_ap->Clear(); 553 return ret; 554 } 555 } 556 } 557 return false; 558} 559 560bool 561Thread::RestoreThreadStateFromCheckpoint (ThreadStateCheckpoint &saved_state) 562{ 563 if (saved_state.stop_info_sp) 564 saved_state.stop_info_sp->MakeStopInfoValid(); 565 SetStopInfo(saved_state.stop_info_sp); 566 GetStackFrameList()->SetCurrentInlinedDepth (saved_state.current_inlined_depth); 567 return true; 568} 569 570StateType 571Thread::GetState() const 572{ 573 // If any other threads access this we will need a mutex for it 574 Mutex::Locker locker(m_state_mutex); 575 return m_state; 576} 577 578void 579Thread::SetState(StateType state) 580{ 581 Mutex::Locker locker(m_state_mutex); 582 m_state = state; 583} 584 585void 586Thread::WillStop() 587{ 588 ThreadPlan *current_plan = GetCurrentPlan(); 589 590 // FIXME: I may decide to disallow threads with no plans. In which 591 // case this should go to an assert. 592 593 if (!current_plan) 594 return; 595 596 current_plan->WillStop(); 597} 598 599void 600Thread::SetupForResume () 601{ 602 if (GetResumeState() != eStateSuspended) 603 { 604 605 // If we're at a breakpoint push the step-over breakpoint plan. Do this before 606 // telling the current plan it will resume, since we might change what the current 607 // plan is. 608 609// StopReason stop_reason = lldb::eStopReasonInvalid; 610// StopInfoSP stop_info_sp = GetStopInfo(); 611// if (stop_info_sp.get()) 612// stop_reason = stop_info_sp->GetStopReason(); 613// if (stop_reason == lldb::eStopReasonBreakpoint) 614 lldb::RegisterContextSP reg_ctx_sp (GetRegisterContext()); 615 if (reg_ctx_sp) 616 { 617 BreakpointSiteSP bp_site_sp = GetProcess()->GetBreakpointSiteList().FindByAddress(reg_ctx_sp->GetPC()); 618 if (bp_site_sp) 619 { 620 // Note, don't assume there's a ThreadPlanStepOverBreakpoint, the target may not require anything 621 // special to step over a breakpoint. 622 623 ThreadPlan *cur_plan = GetCurrentPlan(); 624 625 if (cur_plan->GetKind() != ThreadPlan::eKindStepOverBreakpoint) 626 { 627 ThreadPlanStepOverBreakpoint *step_bp_plan = new ThreadPlanStepOverBreakpoint (*this); 628 if (step_bp_plan) 629 { 630 ThreadPlanSP step_bp_plan_sp; 631 step_bp_plan->SetPrivate (true); 632 633 if (GetCurrentPlan()->RunState() != eStateStepping) 634 { 635 step_bp_plan->SetAutoContinue(true); 636 } 637 step_bp_plan_sp.reset (step_bp_plan); 638 QueueThreadPlan (step_bp_plan_sp, false); 639 } 640 } 641 } 642 } 643 } 644} 645 646bool 647Thread::ShouldResume (StateType resume_state) 648{ 649 // At this point clear the completed plan stack. 650 m_completed_plan_stack.clear(); 651 m_discarded_plan_stack.clear(); 652 m_override_should_notify = eLazyBoolCalculate; 653 654 m_temporary_resume_state = resume_state; 655 656 lldb::ThreadSP backing_thread_sp (GetBackingThread ()); 657 if (backing_thread_sp) 658 backing_thread_sp->m_temporary_resume_state = resume_state; 659 660 // Make sure m_stop_info_sp is valid 661 GetPrivateStopInfo(); 662 663 // This is a little dubious, but we are trying to limit how often we actually fetch stop info from 664 // the target, 'cause that slows down single stepping. So assume that if we got to the point where 665 // we're about to resume, and we haven't yet had to fetch the stop reason, then it doesn't need to know 666 // about the fact that we are resuming... 667 const uint32_t process_stop_id = GetProcess()->GetStopID(); 668 if (m_stop_info_stop_id == process_stop_id && 669 (m_stop_info_sp && m_stop_info_sp->IsValid())) 670 { 671 StopInfo *stop_info = GetPrivateStopInfo().get(); 672 if (stop_info) 673 stop_info->WillResume (resume_state); 674 } 675 676 // Tell all the plans that we are about to resume in case they need to clear any state. 677 // We distinguish between the plan on the top of the stack and the lower 678 // plans in case a plan needs to do any special business before it runs. 679 680 bool need_to_resume = false; 681 ThreadPlan *plan_ptr = GetCurrentPlan(); 682 if (plan_ptr) 683 { 684 need_to_resume = plan_ptr->WillResume(resume_state, true); 685 686 while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL) 687 { 688 plan_ptr->WillResume (resume_state, false); 689 } 690 691 // If the WillResume for the plan says we are faking a resume, then it will have set an appropriate stop info. 692 // In that case, don't reset it here. 693 694 if (need_to_resume && resume_state != eStateSuspended) 695 { 696 m_stop_info_sp.reset(); 697 } 698 } 699 700 if (need_to_resume) 701 { 702 ClearStackFrames(); 703 // Let Thread subclasses do any special work they need to prior to resuming 704 WillResume (resume_state); 705 } 706 707 return need_to_resume; 708} 709 710void 711Thread::DidResume () 712{ 713 SetResumeSignal (LLDB_INVALID_SIGNAL_NUMBER); 714} 715 716void 717Thread::DidStop () 718{ 719 SetState (eStateStopped); 720} 721 722bool 723Thread::ShouldStop (Event* event_ptr) 724{ 725 ThreadPlan *current_plan = GetCurrentPlan(); 726 727 bool should_stop = true; 728 729 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 730 731 if (GetResumeState () == eStateSuspended) 732 { 733 if (log) 734 log->Printf ("Thread::%s for tid = 0x%4.4" PRIx64 " 0x%4.4" PRIx64 ", should_stop = 0 (ignore since thread was suspended)", 735 __FUNCTION__, 736 GetID (), 737 GetProtocolID()); 738 return false; 739 } 740 741 if (GetTemporaryResumeState () == eStateSuspended) 742 { 743 if (log) 744 log->Printf ("Thread::%s for tid = 0x%4.4" PRIx64 " 0x%4.4" PRIx64 ", should_stop = 0 (ignore since thread was suspended)", 745 __FUNCTION__, 746 GetID (), 747 GetProtocolID()); 748 return false; 749 } 750 751 // Based on the current thread plan and process stop info, check if this 752 // thread caused the process to stop. NOTE: this must take place before 753 // the plan is moved from the current plan stack to the completed plan 754 // stack. 755 if (ThreadStoppedForAReason() == false) 756 { 757 if (log) 758 log->Printf ("Thread::%s for tid = 0x%4.4" PRIx64 " 0x%4.4" PRIx64 ", pc = 0x%16.16" PRIx64 ", should_stop = 0 (ignore since no stop reason)", 759 __FUNCTION__, 760 GetID (), 761 GetProtocolID(), 762 GetRegisterContext() ? GetRegisterContext()->GetPC() : LLDB_INVALID_ADDRESS); 763 return false; 764 } 765 766 if (log) 767 { 768 log->Printf ("Thread::%s(%p) for tid = 0x%4.4" PRIx64 " 0x%4.4" PRIx64 ", pc = 0x%16.16" PRIx64, 769 __FUNCTION__, 770 this, 771 GetID (), 772 GetProtocolID (), 773 GetRegisterContext() ? GetRegisterContext()->GetPC() : LLDB_INVALID_ADDRESS); 774 log->Printf ("^^^^^^^^ Thread::ShouldStop Begin ^^^^^^^^"); 775 StreamString s; 776 s.IndentMore(); 777 DumpThreadPlans(&s); 778 log->Printf ("Plan stack initial state:\n%s", s.GetData()); 779 } 780 781 // The top most plan always gets to do the trace log... 782 current_plan->DoTraceLog (); 783 784 // First query the stop info's ShouldStopSynchronous. This handles "synchronous" stop reasons, for example the breakpoint 785 // command on internal breakpoints. If a synchronous stop reason says we should not stop, then we don't have to 786 // do any more work on this stop. 787 StopInfoSP private_stop_info (GetPrivateStopInfo()); 788 if (private_stop_info && private_stop_info->ShouldStopSynchronous(event_ptr) == false) 789 { 790 if (log) 791 log->Printf ("StopInfo::ShouldStop async callback says we should not stop, returning ShouldStop of false."); 792 return false; 793 } 794 795 // If we've already been restarted, don't query the plans since the state they would examine is not current. 796 if (Process::ProcessEventData::GetRestartedFromEvent(event_ptr)) 797 return false; 798 799 // Before the plans see the state of the world, calculate the current inlined depth. 800 GetStackFrameList()->CalculateCurrentInlinedDepth(); 801 802 // If the base plan doesn't understand why we stopped, then we have to find a plan that does. 803 // If that plan is still working, then we don't need to do any more work. If the plan that explains 804 // the stop is done, then we should pop all the plans below it, and pop it, and then let the plans above it decide 805 // whether they still need to do more work. 806 807 bool done_processing_current_plan = false; 808 809 if (!current_plan->PlanExplainsStop(event_ptr)) 810 { 811 if (current_plan->TracerExplainsStop()) 812 { 813 done_processing_current_plan = true; 814 should_stop = false; 815 } 816 else 817 { 818 // If the current plan doesn't explain the stop, then find one that 819 // does and let it handle the situation. 820 ThreadPlan *plan_ptr = current_plan; 821 while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL) 822 { 823 if (plan_ptr->PlanExplainsStop(event_ptr)) 824 { 825 should_stop = plan_ptr->ShouldStop (event_ptr); 826 827 // plan_ptr explains the stop, next check whether plan_ptr is done, if so, then we should take it 828 // and all the plans below it off the stack. 829 830 if (plan_ptr->MischiefManaged()) 831 { 832 // We're going to pop the plans up to and including the plan that explains the stop. 833 ThreadPlan *prev_plan_ptr = GetPreviousPlan (plan_ptr); 834 835 do 836 { 837 if (should_stop) 838 current_plan->WillStop(); 839 PopPlan(); 840 } 841 while ((current_plan = GetCurrentPlan()) != prev_plan_ptr); 842 // Now, if the responsible plan was not "Okay to discard" then we're done, 843 // otherwise we forward this to the next plan in the stack below. 844 if (plan_ptr->IsMasterPlan() && !plan_ptr->OkayToDiscard()) 845 done_processing_current_plan = true; 846 else 847 done_processing_current_plan = false; 848 } 849 else 850 done_processing_current_plan = true; 851 852 break; 853 } 854 855 } 856 } 857 } 858 859 if (!done_processing_current_plan) 860 { 861 bool over_ride_stop = current_plan->ShouldAutoContinue(event_ptr); 862 863 if (log) 864 log->Printf("Plan %s explains stop, auto-continue %i.", current_plan->GetName(), over_ride_stop); 865 866 // We're starting from the base plan, so just let it decide; 867 if (PlanIsBasePlan(current_plan)) 868 { 869 should_stop = current_plan->ShouldStop (event_ptr); 870 if (log) 871 log->Printf("Base plan says should stop: %i.", should_stop); 872 } 873 else 874 { 875 // Otherwise, don't let the base plan override what the other plans say to do, since 876 // presumably if there were other plans they would know what to do... 877 while (1) 878 { 879 if (PlanIsBasePlan(current_plan)) 880 break; 881 882 should_stop = current_plan->ShouldStop(event_ptr); 883 if (log) 884 log->Printf("Plan %s should stop: %d.", current_plan->GetName(), should_stop); 885 if (current_plan->MischiefManaged()) 886 { 887 if (should_stop) 888 current_plan->WillStop(); 889 890 // If a Master Plan wants to stop, and wants to stick on the stack, we let it. 891 // Otherwise, see if the plan's parent wants to stop. 892 893 if (should_stop && current_plan->IsMasterPlan() && !current_plan->OkayToDiscard()) 894 { 895 PopPlan(); 896 break; 897 } 898 else 899 { 900 901 PopPlan(); 902 903 current_plan = GetCurrentPlan(); 904 if (current_plan == NULL) 905 { 906 break; 907 } 908 } 909 } 910 else 911 { 912 break; 913 } 914 } 915 } 916 917 if (over_ride_stop) 918 should_stop = false; 919 920 // One other potential problem is that we set up a master plan, then stop in before it is complete - for instance 921 // by hitting a breakpoint during a step-over - then do some step/finish/etc operations that wind up 922 // past the end point condition of the initial plan. We don't want to strand the original plan on the stack, 923 // This code clears stale plans off the stack. 924 925 if (should_stop) 926 { 927 ThreadPlan *plan_ptr = GetCurrentPlan(); 928 while (!PlanIsBasePlan(plan_ptr)) 929 { 930 bool stale = plan_ptr->IsPlanStale (); 931 ThreadPlan *examined_plan = plan_ptr; 932 plan_ptr = GetPreviousPlan (examined_plan); 933 934 if (stale) 935 { 936 if (log) 937 log->Printf("Plan %s being discarded in cleanup, it says it is already done.", examined_plan->GetName()); 938 DiscardThreadPlansUpToPlan(examined_plan); 939 } 940 } 941 } 942 943 } 944 945 if (log) 946 { 947 StreamString s; 948 s.IndentMore(); 949 DumpThreadPlans(&s); 950 log->Printf ("Plan stack final state:\n%s", s.GetData()); 951 log->Printf ("vvvvvvvv Thread::ShouldStop End (returning %i) vvvvvvvv", should_stop); 952 } 953 return should_stop; 954} 955 956Vote 957Thread::ShouldReportStop (Event* event_ptr) 958{ 959 StateType thread_state = GetResumeState (); 960 StateType temp_thread_state = GetTemporaryResumeState(); 961 962 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 963 964 if (thread_state == eStateSuspended || thread_state == eStateInvalid) 965 { 966 if (log) 967 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4" PRIx64 ": returning vote %i (state was suspended or invalid)", GetID(), eVoteNoOpinion); 968 return eVoteNoOpinion; 969 } 970 971 if (temp_thread_state == eStateSuspended || temp_thread_state == eStateInvalid) 972 { 973 if (log) 974 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4" PRIx64 ": returning vote %i (temporary state was suspended or invalid)", GetID(), eVoteNoOpinion); 975 return eVoteNoOpinion; 976 } 977 978 if (!ThreadStoppedForAReason()) 979 { 980 if (log) 981 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4" PRIx64 ": returning vote %i (thread didn't stop for a reason.)", GetID(), eVoteNoOpinion); 982 return eVoteNoOpinion; 983 } 984 985 if (m_completed_plan_stack.size() > 0) 986 { 987 // Don't use GetCompletedPlan here, since that suppresses private plans. 988 if (log) 989 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4" PRIx64 ": returning vote for complete stack's back plan", GetID()); 990 return m_completed_plan_stack.back()->ShouldReportStop (event_ptr); 991 } 992 else 993 { 994 Vote thread_vote = eVoteNoOpinion; 995 ThreadPlan *plan_ptr = GetCurrentPlan(); 996 while (1) 997 { 998 if (plan_ptr->PlanExplainsStop(event_ptr)) 999 { 1000 thread_vote = plan_ptr->ShouldReportStop(event_ptr); 1001 break; 1002 } 1003 if (PlanIsBasePlan(plan_ptr)) 1004 break; 1005 else 1006 plan_ptr = GetPreviousPlan(plan_ptr); 1007 } 1008 if (log) 1009 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4" PRIx64 ": returning vote %i for current plan", GetID(), thread_vote); 1010 1011 return thread_vote; 1012 } 1013} 1014 1015Vote 1016Thread::ShouldReportRun (Event* event_ptr) 1017{ 1018 StateType thread_state = GetResumeState (); 1019 1020 if (thread_state == eStateSuspended 1021 || thread_state == eStateInvalid) 1022 { 1023 return eVoteNoOpinion; 1024 } 1025 1026 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 1027 if (m_completed_plan_stack.size() > 0) 1028 { 1029 // Don't use GetCompletedPlan here, since that suppresses private plans. 1030 if (log) 1031 log->Printf ("Current Plan for thread %d(%p) (0x%4.4" PRIx64 ", %s): %s being asked whether we should report run.", 1032 GetIndexID(), 1033 this, 1034 GetID(), 1035 StateAsCString(GetTemporaryResumeState()), 1036 m_completed_plan_stack.back()->GetName()); 1037 1038 return m_completed_plan_stack.back()->ShouldReportRun (event_ptr); 1039 } 1040 else 1041 { 1042 if (log) 1043 log->Printf ("Current Plan for thread %d(%p) (0x%4.4" PRIx64 ", %s): %s being asked whether we should report run.", 1044 GetIndexID(), 1045 this, 1046 GetID(), 1047 StateAsCString(GetTemporaryResumeState()), 1048 GetCurrentPlan()->GetName()); 1049 1050 return GetCurrentPlan()->ShouldReportRun (event_ptr); 1051 } 1052} 1053 1054bool 1055Thread::MatchesSpec (const ThreadSpec *spec) 1056{ 1057 if (spec == NULL) 1058 return true; 1059 1060 return spec->ThreadPassesBasicTests(*this); 1061} 1062 1063void 1064Thread::PushPlan (ThreadPlanSP &thread_plan_sp) 1065{ 1066 if (thread_plan_sp) 1067 { 1068 // If the thread plan doesn't already have a tracer, give it its parent's tracer: 1069 if (!thread_plan_sp->GetThreadPlanTracer()) 1070 thread_plan_sp->SetThreadPlanTracer(m_plan_stack.back()->GetThreadPlanTracer()); 1071 m_plan_stack.push_back (thread_plan_sp); 1072 1073 thread_plan_sp->DidPush(); 1074 1075 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 1076 if (log) 1077 { 1078 StreamString s; 1079 thread_plan_sp->GetDescription (&s, lldb::eDescriptionLevelFull); 1080 log->Printf("Thread::PushPlan(0x%p): \"%s\", tid = 0x%4.4" PRIx64 ".", 1081 this, 1082 s.GetData(), 1083 thread_plan_sp->GetThread().GetID()); 1084 } 1085 } 1086} 1087 1088void 1089Thread::PopPlan () 1090{ 1091 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 1092 1093 if (m_plan_stack.size() <= 1) 1094 return; 1095 else 1096 { 1097 ThreadPlanSP &plan = m_plan_stack.back(); 1098 if (log) 1099 { 1100 log->Printf("Popping plan: \"%s\", tid = 0x%4.4" PRIx64 ".", plan->GetName(), plan->GetThread().GetID()); 1101 } 1102 m_completed_plan_stack.push_back (plan); 1103 plan->WillPop(); 1104 m_plan_stack.pop_back(); 1105 } 1106} 1107 1108void 1109Thread::DiscardPlan () 1110{ 1111 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 1112 if (m_plan_stack.size() > 1) 1113 { 1114 ThreadPlanSP &plan = m_plan_stack.back(); 1115 if (log) 1116 log->Printf("Discarding plan: \"%s\", tid = 0x%4.4" PRIx64 ".", plan->GetName(), plan->GetThread().GetID()); 1117 1118 m_discarded_plan_stack.push_back (plan); 1119 plan->WillPop(); 1120 m_plan_stack.pop_back(); 1121 } 1122} 1123 1124ThreadPlan * 1125Thread::GetCurrentPlan () 1126{ 1127 // There will always be at least the base plan. If somebody is mucking with a 1128 // thread with an empty plan stack, we should assert right away. 1129 if (m_plan_stack.empty()) 1130 return NULL; 1131 return m_plan_stack.back().get(); 1132} 1133 1134ThreadPlanSP 1135Thread::GetCompletedPlan () 1136{ 1137 ThreadPlanSP empty_plan_sp; 1138 if (!m_completed_plan_stack.empty()) 1139 { 1140 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 1141 { 1142 ThreadPlanSP completed_plan_sp; 1143 completed_plan_sp = m_completed_plan_stack[i]; 1144 if (!completed_plan_sp->GetPrivate ()) 1145 return completed_plan_sp; 1146 } 1147 } 1148 return empty_plan_sp; 1149} 1150 1151ValueObjectSP 1152Thread::GetReturnValueObject () 1153{ 1154 if (!m_completed_plan_stack.empty()) 1155 { 1156 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 1157 { 1158 ValueObjectSP return_valobj_sp; 1159 return_valobj_sp = m_completed_plan_stack[i]->GetReturnValueObject(); 1160 if (return_valobj_sp) 1161 return return_valobj_sp; 1162 } 1163 } 1164 return ValueObjectSP(); 1165} 1166 1167bool 1168Thread::IsThreadPlanDone (ThreadPlan *plan) 1169{ 1170 if (!m_completed_plan_stack.empty()) 1171 { 1172 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 1173 { 1174 if (m_completed_plan_stack[i].get() == plan) 1175 return true; 1176 } 1177 } 1178 return false; 1179} 1180 1181bool 1182Thread::WasThreadPlanDiscarded (ThreadPlan *plan) 1183{ 1184 if (!m_discarded_plan_stack.empty()) 1185 { 1186 for (int i = m_discarded_plan_stack.size() - 1; i >= 0; i--) 1187 { 1188 if (m_discarded_plan_stack[i].get() == plan) 1189 return true; 1190 } 1191 } 1192 return false; 1193} 1194 1195ThreadPlan * 1196Thread::GetPreviousPlan (ThreadPlan *current_plan) 1197{ 1198 if (current_plan == NULL) 1199 return NULL; 1200 1201 int stack_size = m_completed_plan_stack.size(); 1202 for (int i = stack_size - 1; i > 0; i--) 1203 { 1204 if (current_plan == m_completed_plan_stack[i].get()) 1205 return m_completed_plan_stack[i-1].get(); 1206 } 1207 1208 if (stack_size > 0 && m_completed_plan_stack[0].get() == current_plan) 1209 { 1210 if (m_plan_stack.size() > 0) 1211 return m_plan_stack.back().get(); 1212 else 1213 return NULL; 1214 } 1215 1216 stack_size = m_plan_stack.size(); 1217 for (int i = stack_size - 1; i > 0; i--) 1218 { 1219 if (current_plan == m_plan_stack[i].get()) 1220 return m_plan_stack[i-1].get(); 1221 } 1222 return NULL; 1223} 1224 1225void 1226Thread::QueueThreadPlan (ThreadPlanSP &thread_plan_sp, bool abort_other_plans) 1227{ 1228 if (abort_other_plans) 1229 DiscardThreadPlans(true); 1230 1231 PushPlan (thread_plan_sp); 1232} 1233 1234 1235void 1236Thread::EnableTracer (bool value, bool single_stepping) 1237{ 1238 int stack_size = m_plan_stack.size(); 1239 for (int i = 0; i < stack_size; i++) 1240 { 1241 if (m_plan_stack[i]->GetThreadPlanTracer()) 1242 { 1243 m_plan_stack[i]->GetThreadPlanTracer()->EnableTracing(value); 1244 m_plan_stack[i]->GetThreadPlanTracer()->EnableSingleStep(single_stepping); 1245 } 1246 } 1247} 1248 1249void 1250Thread::SetTracer (lldb::ThreadPlanTracerSP &tracer_sp) 1251{ 1252 int stack_size = m_plan_stack.size(); 1253 for (int i = 0; i < stack_size; i++) 1254 m_plan_stack[i]->SetThreadPlanTracer(tracer_sp); 1255} 1256 1257void 1258Thread::DiscardThreadPlansUpToPlan (lldb::ThreadPlanSP &up_to_plan_sp) 1259{ 1260 DiscardThreadPlansUpToPlan (up_to_plan_sp.get()); 1261} 1262 1263void 1264Thread::DiscardThreadPlansUpToPlan (ThreadPlan *up_to_plan_ptr) 1265{ 1266 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 1267 if (log) 1268 { 1269 log->Printf("Discarding thread plans for thread tid = 0x%4.4" PRIx64 ", up to %p", GetID(), up_to_plan_ptr); 1270 } 1271 1272 int stack_size = m_plan_stack.size(); 1273 1274 // If the input plan is NULL, discard all plans. Otherwise make sure this plan is in the 1275 // stack, and if so discard up to and including it. 1276 1277 if (up_to_plan_ptr == NULL) 1278 { 1279 for (int i = stack_size - 1; i > 0; i--) 1280 DiscardPlan(); 1281 } 1282 else 1283 { 1284 bool found_it = false; 1285 for (int i = stack_size - 1; i > 0; i--) 1286 { 1287 if (m_plan_stack[i].get() == up_to_plan_ptr) 1288 found_it = true; 1289 } 1290 if (found_it) 1291 { 1292 bool last_one = false; 1293 for (int i = stack_size - 1; i > 0 && !last_one ; i--) 1294 { 1295 if (GetCurrentPlan() == up_to_plan_ptr) 1296 last_one = true; 1297 DiscardPlan(); 1298 } 1299 } 1300 } 1301 return; 1302} 1303 1304void 1305Thread::DiscardThreadPlans(bool force) 1306{ 1307 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 1308 if (log) 1309 { 1310 log->Printf("Discarding thread plans for thread (tid = 0x%4.4" PRIx64 ", force %d)", GetID(), force); 1311 } 1312 1313 if (force) 1314 { 1315 int stack_size = m_plan_stack.size(); 1316 for (int i = stack_size - 1; i > 0; i--) 1317 { 1318 DiscardPlan(); 1319 } 1320 return; 1321 } 1322 1323 while (1) 1324 { 1325 1326 int master_plan_idx; 1327 bool discard = true; 1328 1329 // Find the first master plan, see if it wants discarding, and if yes discard up to it. 1330 for (master_plan_idx = m_plan_stack.size() - 1; master_plan_idx >= 0; master_plan_idx--) 1331 { 1332 if (m_plan_stack[master_plan_idx]->IsMasterPlan()) 1333 { 1334 discard = m_plan_stack[master_plan_idx]->OkayToDiscard(); 1335 break; 1336 } 1337 } 1338 1339 if (discard) 1340 { 1341 // First pop all the dependent plans: 1342 for (int i = m_plan_stack.size() - 1; i > master_plan_idx; i--) 1343 { 1344 1345 // FIXME: Do we need a finalize here, or is the rule that "PrepareForStop" 1346 // for the plan leaves it in a state that it is safe to pop the plan 1347 // with no more notice? 1348 DiscardPlan(); 1349 } 1350 1351 // Now discard the master plan itself. 1352 // The bottom-most plan never gets discarded. "OkayToDiscard" for it means 1353 // discard it's dependent plans, but not it... 1354 if (master_plan_idx > 0) 1355 { 1356 DiscardPlan(); 1357 } 1358 } 1359 else 1360 { 1361 // If the master plan doesn't want to get discarded, then we're done. 1362 break; 1363 } 1364 1365 } 1366} 1367 1368bool 1369Thread::PlanIsBasePlan (ThreadPlan *plan_ptr) 1370{ 1371 if (plan_ptr->IsBasePlan()) 1372 return true; 1373 else if (m_plan_stack.size() == 0) 1374 return false; 1375 else 1376 return m_plan_stack[0].get() == plan_ptr; 1377} 1378 1379Error 1380Thread::UnwindInnermostExpression() 1381{ 1382 Error error; 1383 int stack_size = m_plan_stack.size(); 1384 1385 // If the input plan is NULL, discard all plans. Otherwise make sure this plan is in the 1386 // stack, and if so discard up to and including it. 1387 1388 for (int i = stack_size - 1; i > 0; i--) 1389 { 1390 if (m_plan_stack[i]->GetKind() == ThreadPlan::eKindCallFunction) 1391 { 1392 DiscardThreadPlansUpToPlan(m_plan_stack[i].get()); 1393 return error; 1394 } 1395 } 1396 error.SetErrorString("No expressions currently active on this thread"); 1397 return error; 1398} 1399 1400 1401ThreadPlanSP 1402Thread::QueueFundamentalPlan (bool abort_other_plans) 1403{ 1404 ThreadPlanSP thread_plan_sp (new ThreadPlanBase(*this)); 1405 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1406 return thread_plan_sp; 1407} 1408 1409ThreadPlanSP 1410Thread::QueueThreadPlanForStepSingleInstruction 1411( 1412 bool step_over, 1413 bool abort_other_plans, 1414 bool stop_other_threads 1415) 1416{ 1417 ThreadPlanSP thread_plan_sp (new ThreadPlanStepInstruction (*this, step_over, stop_other_threads, eVoteNoOpinion, eVoteNoOpinion)); 1418 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1419 return thread_plan_sp; 1420} 1421 1422ThreadPlanSP 1423Thread::QueueThreadPlanForStepOverRange 1424( 1425 bool abort_other_plans, 1426 const AddressRange &range, 1427 const SymbolContext &addr_context, 1428 lldb::RunMode stop_other_threads 1429) 1430{ 1431 ThreadPlanSP thread_plan_sp; 1432 thread_plan_sp.reset (new ThreadPlanStepOverRange (*this, range, addr_context, stop_other_threads)); 1433 1434 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1435 return thread_plan_sp; 1436} 1437 1438ThreadPlanSP 1439Thread::QueueThreadPlanForStepInRange 1440( 1441 bool abort_other_plans, 1442 const AddressRange &range, 1443 const SymbolContext &addr_context, 1444 const char *step_in_target, 1445 lldb::RunMode stop_other_threads, 1446 bool avoid_code_without_debug_info 1447) 1448{ 1449 ThreadPlanSP thread_plan_sp; 1450 ThreadPlanStepInRange *plan = new ThreadPlanStepInRange (*this, range, addr_context, stop_other_threads); 1451 if (avoid_code_without_debug_info) 1452 plan->GetFlags().Set (ThreadPlanShouldStopHere::eAvoidNoDebug); 1453 else 1454 plan->GetFlags().Clear (ThreadPlanShouldStopHere::eAvoidNoDebug); 1455 if (step_in_target) 1456 plan->SetStepInTarget(step_in_target); 1457 thread_plan_sp.reset (plan); 1458 1459 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1460 return thread_plan_sp; 1461} 1462 1463 1464ThreadPlanSP 1465Thread::QueueThreadPlanForStepOut 1466( 1467 bool abort_other_plans, 1468 SymbolContext *addr_context, 1469 bool first_insn, 1470 bool stop_other_threads, 1471 Vote stop_vote, 1472 Vote run_vote, 1473 uint32_t frame_idx 1474) 1475{ 1476 ThreadPlanSP thread_plan_sp (new ThreadPlanStepOut (*this, 1477 addr_context, 1478 first_insn, 1479 stop_other_threads, 1480 stop_vote, 1481 run_vote, 1482 frame_idx)); 1483 1484 if (thread_plan_sp->ValidatePlan(NULL)) 1485 { 1486 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1487 return thread_plan_sp; 1488 } 1489 else 1490 { 1491 return ThreadPlanSP(); 1492 } 1493} 1494 1495ThreadPlanSP 1496Thread::QueueThreadPlanForStepThrough (StackID &return_stack_id, bool abort_other_plans, bool stop_other_threads) 1497{ 1498 ThreadPlanSP thread_plan_sp(new ThreadPlanStepThrough (*this, return_stack_id, stop_other_threads)); 1499 if (!thread_plan_sp || !thread_plan_sp->ValidatePlan (NULL)) 1500 return ThreadPlanSP(); 1501 1502 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1503 return thread_plan_sp; 1504} 1505 1506ThreadPlanSP 1507Thread::QueueThreadPlanForRunToAddress (bool abort_other_plans, 1508 Address &target_addr, 1509 bool stop_other_threads) 1510{ 1511 ThreadPlanSP thread_plan_sp (new ThreadPlanRunToAddress (*this, target_addr, stop_other_threads)); 1512 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1513 return thread_plan_sp; 1514} 1515 1516ThreadPlanSP 1517Thread::QueueThreadPlanForStepUntil (bool abort_other_plans, 1518 lldb::addr_t *address_list, 1519 size_t num_addresses, 1520 bool stop_other_threads, 1521 uint32_t frame_idx) 1522{ 1523 ThreadPlanSP thread_plan_sp (new ThreadPlanStepUntil (*this, address_list, num_addresses, stop_other_threads, frame_idx)); 1524 QueueThreadPlan (thread_plan_sp, abort_other_plans); 1525 return thread_plan_sp; 1526 1527} 1528 1529uint32_t 1530Thread::GetIndexID () const 1531{ 1532 return m_index_id; 1533} 1534 1535void 1536Thread::DumpThreadPlans (lldb_private::Stream *s) const 1537{ 1538 uint32_t stack_size = m_plan_stack.size(); 1539 int i; 1540 s->Indent(); 1541 s->Printf ("Plan Stack for thread #%u: tid = 0x%4.4" PRIx64 ", stack_size = %d\n", GetIndexID(), GetID(), stack_size); 1542 for (i = stack_size - 1; i >= 0; i--) 1543 { 1544 s->IndentMore(); 1545 s->Indent(); 1546 s->Printf ("Element %d: ", i); 1547 m_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 1548 s->EOL(); 1549 s->IndentLess(); 1550 } 1551 1552 stack_size = m_completed_plan_stack.size(); 1553 if (stack_size > 0) 1554 { 1555 s->Indent(); 1556 s->Printf ("Completed Plan Stack: %d elements.\n", stack_size); 1557 for (i = stack_size - 1; i >= 0; i--) 1558 { 1559 s->IndentMore(); 1560 s->Indent(); 1561 s->Printf ("Element %d: ", i); 1562 m_completed_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 1563 s->EOL(); 1564 s->IndentLess(); 1565 } 1566 } 1567 1568 stack_size = m_discarded_plan_stack.size(); 1569 if (stack_size > 0) 1570 { 1571 s->Indent(); 1572 s->Printf ("Discarded Plan Stack: %d elements.\n", stack_size); 1573 for (i = stack_size - 1; i >= 0; i--) 1574 { 1575 s->IndentMore(); 1576 s->Indent(); 1577 s->Printf ("Element %d: ", i); 1578 m_discarded_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 1579 s->EOL(); 1580 s->IndentLess(); 1581 } 1582 } 1583 1584} 1585 1586TargetSP 1587Thread::CalculateTarget () 1588{ 1589 TargetSP target_sp; 1590 ProcessSP process_sp(GetProcess()); 1591 if (process_sp) 1592 target_sp = process_sp->CalculateTarget(); 1593 return target_sp; 1594 1595} 1596 1597ProcessSP 1598Thread::CalculateProcess () 1599{ 1600 return GetProcess(); 1601} 1602 1603ThreadSP 1604Thread::CalculateThread () 1605{ 1606 return shared_from_this(); 1607} 1608 1609StackFrameSP 1610Thread::CalculateStackFrame () 1611{ 1612 return StackFrameSP(); 1613} 1614 1615void 1616Thread::CalculateExecutionContext (ExecutionContext &exe_ctx) 1617{ 1618 exe_ctx.SetContext (shared_from_this()); 1619} 1620 1621 1622StackFrameListSP 1623Thread::GetStackFrameList () 1624{ 1625 StackFrameListSP frame_list_sp; 1626 Mutex::Locker locker(m_frame_mutex); 1627 if (m_curr_frames_sp) 1628 { 1629 frame_list_sp = m_curr_frames_sp; 1630 } 1631 else 1632 { 1633 frame_list_sp.reset(new StackFrameList (*this, m_prev_frames_sp, true)); 1634 m_curr_frames_sp = frame_list_sp; 1635 } 1636 return frame_list_sp; 1637} 1638 1639void 1640Thread::ClearStackFrames () 1641{ 1642 Mutex::Locker locker(m_frame_mutex); 1643 1644 Unwind *unwinder = GetUnwinder (); 1645 if (unwinder) 1646 unwinder->Clear(); 1647 1648 // Only store away the old "reference" StackFrameList if we got all its frames: 1649 // FIXME: At some point we can try to splice in the frames we have fetched into 1650 // the new frame as we make it, but let's not try that now. 1651 if (m_curr_frames_sp && m_curr_frames_sp->GetAllFramesFetched()) 1652 m_prev_frames_sp.swap (m_curr_frames_sp); 1653 m_curr_frames_sp.reset(); 1654} 1655 1656lldb::StackFrameSP 1657Thread::GetFrameWithConcreteFrameIndex (uint32_t unwind_idx) 1658{ 1659 return GetStackFrameList()->GetFrameWithConcreteFrameIndex (unwind_idx); 1660} 1661 1662 1663Error 1664Thread::ReturnFromFrameWithIndex (uint32_t frame_idx, lldb::ValueObjectSP return_value_sp, bool broadcast) 1665{ 1666 StackFrameSP frame_sp = GetStackFrameAtIndex (frame_idx); 1667 Error return_error; 1668 1669 if (!frame_sp) 1670 { 1671 return_error.SetErrorStringWithFormat("Could not find frame with index %d in thread 0x%" PRIx64 ".", frame_idx, GetID()); 1672 } 1673 1674 return ReturnFromFrame(frame_sp, return_value_sp, broadcast); 1675} 1676 1677Error 1678Thread::ReturnFromFrame (lldb::StackFrameSP frame_sp, lldb::ValueObjectSP return_value_sp, bool broadcast) 1679{ 1680 Error return_error; 1681 1682 if (!frame_sp) 1683 { 1684 return_error.SetErrorString("Can't return to a null frame."); 1685 return return_error; 1686 } 1687 1688 Thread *thread = frame_sp->GetThread().get(); 1689 uint32_t older_frame_idx = frame_sp->GetFrameIndex() + 1; 1690 StackFrameSP older_frame_sp = thread->GetStackFrameAtIndex(older_frame_idx); 1691 if (!older_frame_sp) 1692 { 1693 return_error.SetErrorString("No older frame to return to."); 1694 return return_error; 1695 } 1696 1697 if (return_value_sp) 1698 { 1699 lldb::ABISP abi = thread->GetProcess()->GetABI(); 1700 if (!abi) 1701 { 1702 return_error.SetErrorString("Could not find ABI to set return value."); 1703 return return_error; 1704 } 1705 SymbolContext sc = frame_sp->GetSymbolContext(eSymbolContextFunction); 1706 1707 // FIXME: ValueObject::Cast doesn't currently work correctly, at least not for scalars. 1708 // Turn that back on when that works. 1709 if (0 && sc.function != NULL) 1710 { 1711 Type *function_type = sc.function->GetType(); 1712 if (function_type) 1713 { 1714 ClangASTType return_type = sc.function->GetClangType().GetFunctionReturnType(); 1715 if (return_type) 1716 { 1717 StreamString s; 1718 return_type.DumpTypeDescription(&s); 1719 ValueObjectSP cast_value_sp = return_value_sp->Cast(return_type); 1720 if (cast_value_sp) 1721 { 1722 cast_value_sp->SetFormat(eFormatHex); 1723 return_value_sp = cast_value_sp; 1724 } 1725 } 1726 } 1727 } 1728 1729 return_error = abi->SetReturnValueObject(older_frame_sp, return_value_sp); 1730 if (!return_error.Success()) 1731 return return_error; 1732 } 1733 1734 // Now write the return registers for the chosen frame: 1735 // Note, we can't use ReadAllRegisterValues->WriteAllRegisterValues, since the read & write 1736 // cook their data 1737 1738 StackFrameSP youngest_frame_sp = thread->GetStackFrameAtIndex(0); 1739 if (youngest_frame_sp) 1740 { 1741 lldb::RegisterContextSP reg_ctx_sp (youngest_frame_sp->GetRegisterContext()); 1742 if (reg_ctx_sp) 1743 { 1744 bool copy_success = reg_ctx_sp->CopyFromRegisterContext(older_frame_sp->GetRegisterContext()); 1745 if (copy_success) 1746 { 1747 thread->DiscardThreadPlans(true); 1748 thread->ClearStackFrames(); 1749 if (broadcast && EventTypeHasListeners(eBroadcastBitStackChanged)) 1750 BroadcastEvent(eBroadcastBitStackChanged, new ThreadEventData (this->shared_from_this())); 1751 } 1752 else 1753 { 1754 return_error.SetErrorString("Could not reset register values."); 1755 } 1756 } 1757 else 1758 { 1759 return_error.SetErrorString("Frame has no register context."); 1760 } 1761 } 1762 else 1763 { 1764 return_error.SetErrorString("Returned past top frame."); 1765 } 1766 return return_error; 1767} 1768 1769static void DumpAddressList (Stream &s, const std::vector<Address> &list, ExecutionContextScope *exe_scope) 1770{ 1771 for (size_t n=0;n<list.size();n++) 1772 { 1773 s << "\t"; 1774 list[n].Dump (&s, exe_scope, Address::DumpStyleResolvedDescription, Address::DumpStyleSectionNameOffset); 1775 s << "\n"; 1776 } 1777} 1778 1779Error 1780Thread::JumpToLine (const FileSpec &file, uint32_t line, bool can_leave_function, std::string *warnings) 1781{ 1782 ExecutionContext exe_ctx (GetStackFrameAtIndex(0)); 1783 Target *target = exe_ctx.GetTargetPtr(); 1784 TargetSP target_sp = exe_ctx.GetTargetSP(); 1785 RegisterContext *reg_ctx = exe_ctx.GetRegisterContext(); 1786 StackFrame *frame = exe_ctx.GetFramePtr(); 1787 const SymbolContext &sc = frame->GetSymbolContext(eSymbolContextFunction); 1788 1789 // Find candidate locations. 1790 std::vector<Address> candidates, within_function, outside_function; 1791 target->GetImages().FindAddressesForLine (target_sp, file, line, sc.function, within_function, outside_function); 1792 1793 // If possible, we try and stay within the current function. 1794 // Within a function, we accept multiple locations (optimized code may do this, 1795 // there's no solution here so we do the best we can). 1796 // However if we're trying to leave the function, we don't know how to pick the 1797 // right location, so if there's more than one then we bail. 1798 if (!within_function.empty()) 1799 candidates = within_function; 1800 else if (outside_function.size() == 1 && can_leave_function) 1801 candidates = outside_function; 1802 1803 // Check if we got anything. 1804 if (candidates.empty()) 1805 { 1806 if (outside_function.empty()) 1807 { 1808 return Error("Cannot locate an address for %s:%i.", 1809 file.GetFilename().AsCString(), line); 1810 } 1811 else if (outside_function.size() == 1) 1812 { 1813 return Error("%s:%i is outside the current function.", 1814 file.GetFilename().AsCString(), line); 1815 } 1816 else 1817 { 1818 StreamString sstr; 1819 DumpAddressList(sstr, outside_function, target); 1820 return Error("%s:%i has multiple candidate locations:\n%s", 1821 file.GetFilename().AsCString(), line, sstr.GetString().c_str()); 1822 } 1823 } 1824 1825 // Accept the first location, warn about any others. 1826 Address dest = candidates[0]; 1827 if (warnings && candidates.size() > 1) 1828 { 1829 StreamString sstr; 1830 sstr.Printf("%s:%i appears multiple times in this function, selecting the first location:\n", 1831 file.GetFilename().AsCString(), line); 1832 DumpAddressList(sstr, candidates, target); 1833 *warnings = sstr.GetString(); 1834 } 1835 1836 if (!reg_ctx->SetPC (dest)) 1837 return Error("Cannot change PC to target address."); 1838 1839 return Error(); 1840} 1841 1842void 1843Thread::DumpUsingSettingsFormat (Stream &strm, uint32_t frame_idx) 1844{ 1845 ExecutionContext exe_ctx (shared_from_this()); 1846 Process *process = exe_ctx.GetProcessPtr(); 1847 if (process == NULL) 1848 return; 1849 1850 StackFrameSP frame_sp; 1851 SymbolContext frame_sc; 1852 if (frame_idx != LLDB_INVALID_INDEX32) 1853 { 1854 frame_sp = GetStackFrameAtIndex (frame_idx); 1855 if (frame_sp) 1856 { 1857 exe_ctx.SetFrameSP(frame_sp); 1858 frame_sc = frame_sp->GetSymbolContext(eSymbolContextEverything); 1859 } 1860 } 1861 1862 const char *thread_format = exe_ctx.GetTargetRef().GetDebugger().GetThreadFormat(); 1863 assert (thread_format); 1864 Debugger::FormatPrompt (thread_format, 1865 frame_sp ? &frame_sc : NULL, 1866 &exe_ctx, 1867 NULL, 1868 strm); 1869} 1870 1871void 1872Thread::SettingsInitialize () 1873{ 1874} 1875 1876void 1877Thread::SettingsTerminate () 1878{ 1879} 1880 1881lldb::addr_t 1882Thread::GetThreadPointer () 1883{ 1884 return LLDB_INVALID_ADDRESS; 1885} 1886 1887addr_t 1888Thread::GetThreadLocalData (const ModuleSP module) 1889{ 1890 // The default implementation is to ask the dynamic loader for it. 1891 // This can be overridden for specific platforms. 1892 DynamicLoader *loader = GetProcess()->GetDynamicLoader(); 1893 if (loader) 1894 return loader->GetThreadLocalData (module, shared_from_this()); 1895 else 1896 return LLDB_INVALID_ADDRESS; 1897} 1898 1899lldb::StackFrameSP 1900Thread::GetStackFrameSPForStackFramePtr (StackFrame *stack_frame_ptr) 1901{ 1902 return GetStackFrameList()->GetStackFrameSPForStackFramePtr (stack_frame_ptr); 1903} 1904 1905const char * 1906Thread::StopReasonAsCString (lldb::StopReason reason) 1907{ 1908 switch (reason) 1909 { 1910 case eStopReasonInvalid: return "invalid"; 1911 case eStopReasonNone: return "none"; 1912 case eStopReasonTrace: return "trace"; 1913 case eStopReasonBreakpoint: return "breakpoint"; 1914 case eStopReasonWatchpoint: return "watchpoint"; 1915 case eStopReasonSignal: return "signal"; 1916 case eStopReasonException: return "exception"; 1917 case eStopReasonExec: return "exec"; 1918 case eStopReasonPlanComplete: return "plan complete"; 1919 case eStopReasonThreadExiting: return "thread exiting"; 1920 } 1921 1922 1923 static char unknown_state_string[64]; 1924 snprintf(unknown_state_string, sizeof (unknown_state_string), "StopReason = %i", reason); 1925 return unknown_state_string; 1926} 1927 1928const char * 1929Thread::RunModeAsCString (lldb::RunMode mode) 1930{ 1931 switch (mode) 1932 { 1933 case eOnlyThisThread: return "only this thread"; 1934 case eAllThreads: return "all threads"; 1935 case eOnlyDuringStepping: return "only during stepping"; 1936 } 1937 1938 static char unknown_state_string[64]; 1939 snprintf(unknown_state_string, sizeof (unknown_state_string), "RunMode = %i", mode); 1940 return unknown_state_string; 1941} 1942 1943size_t 1944Thread::GetStatus (Stream &strm, uint32_t start_frame, uint32_t num_frames, uint32_t num_frames_with_source) 1945{ 1946 ExecutionContext exe_ctx (shared_from_this()); 1947 Target *target = exe_ctx.GetTargetPtr(); 1948 Process *process = exe_ctx.GetProcessPtr(); 1949 size_t num_frames_shown = 0; 1950 strm.Indent(); 1951 bool is_selected = false; 1952 if (process) 1953 { 1954 if (process->GetThreadList().GetSelectedThread().get() == this) 1955 is_selected = true; 1956 } 1957 strm.Printf("%c ", is_selected ? '*' : ' '); 1958 if (target && target->GetDebugger().GetUseExternalEditor()) 1959 { 1960 StackFrameSP frame_sp = GetStackFrameAtIndex(start_frame); 1961 if (frame_sp) 1962 { 1963 SymbolContext frame_sc(frame_sp->GetSymbolContext (eSymbolContextLineEntry)); 1964 if (frame_sc.line_entry.line != 0 && frame_sc.line_entry.file) 1965 { 1966 Host::OpenFileInExternalEditor (frame_sc.line_entry.file, frame_sc.line_entry.line); 1967 } 1968 } 1969 } 1970 1971 DumpUsingSettingsFormat (strm, start_frame); 1972 1973 if (num_frames > 0) 1974 { 1975 strm.IndentMore(); 1976 1977 const bool show_frame_info = true; 1978 1979 const char *selected_frame_marker = NULL; 1980 if (num_frames == 1 || (GetID() != GetProcess()->GetThreadList().GetSelectedThread()->GetID())) 1981 strm.IndentMore (); 1982 else 1983 selected_frame_marker = "* "; 1984 1985 num_frames_shown = GetStackFrameList ()->GetStatus (strm, 1986 start_frame, 1987 num_frames, 1988 show_frame_info, 1989 num_frames_with_source, 1990 selected_frame_marker); 1991 if (num_frames == 1) 1992 strm.IndentLess(); 1993 strm.IndentLess(); 1994 } 1995 return num_frames_shown; 1996} 1997 1998size_t 1999Thread::GetStackFrameStatus (Stream& strm, 2000 uint32_t first_frame, 2001 uint32_t num_frames, 2002 bool show_frame_info, 2003 uint32_t num_frames_with_source) 2004{ 2005 return GetStackFrameList()->GetStatus (strm, 2006 first_frame, 2007 num_frames, 2008 show_frame_info, 2009 num_frames_with_source); 2010} 2011 2012Unwind * 2013Thread::GetUnwinder () 2014{ 2015 if (m_unwinder_ap.get() == NULL) 2016 { 2017 const ArchSpec target_arch (CalculateTarget()->GetArchitecture ()); 2018 const llvm::Triple::ArchType machine = target_arch.GetMachine(); 2019 switch (machine) 2020 { 2021 case llvm::Triple::x86_64: 2022 case llvm::Triple::x86: 2023 case llvm::Triple::arm: 2024 case llvm::Triple::thumb: 2025 case llvm::Triple::mips64: 2026 case llvm::Triple::hexagon: 2027 m_unwinder_ap.reset (new UnwindLLDB (*this)); 2028 break; 2029 2030 default: 2031 if (target_arch.GetTriple().getVendor() == llvm::Triple::Apple) 2032 m_unwinder_ap.reset (new UnwindMacOSXFrameBackchain (*this)); 2033 break; 2034 } 2035 } 2036 return m_unwinder_ap.get(); 2037} 2038 2039 2040void 2041Thread::Flush () 2042{ 2043 ClearStackFrames (); 2044 m_reg_context_sp.reset(); 2045} 2046 2047bool 2048Thread::IsStillAtLastBreakpointHit () 2049{ 2050 // If we are currently stopped at a breakpoint, always return that stopinfo and don't reset it. 2051 // This allows threads to maintain their breakpoint stopinfo, such as when thread-stepping in 2052 // multithreaded programs. 2053 if (m_stop_info_sp) { 2054 StopReason stop_reason = m_stop_info_sp->GetStopReason(); 2055 if (stop_reason == lldb::eStopReasonBreakpoint) { 2056 uint64_t value = m_stop_info_sp->GetValue(); 2057 lldb::RegisterContextSP reg_ctx_sp (GetRegisterContext()); 2058 if (reg_ctx_sp) 2059 { 2060 lldb::addr_t pc = reg_ctx_sp->GetPC(); 2061 BreakpointSiteSP bp_site_sp = GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 2062 if (bp_site_sp && value == bp_site_sp->GetID()) 2063 return true; 2064 } 2065 } 2066 } 2067 return false; 2068} 2069 2070 2071Error 2072Thread::StepIn (bool source_step, 2073 bool avoid_code_without_debug_info) 2074 2075{ 2076 Error error; 2077 Process *process = GetProcess().get(); 2078 if (StateIsStoppedState (process->GetState(), true)) 2079 { 2080 StackFrameSP frame_sp = GetStackFrameAtIndex (0); 2081 ThreadPlanSP new_plan_sp; 2082 const lldb::RunMode run_mode = eOnlyThisThread; 2083 const bool abort_other_plans = false; 2084 2085 if (source_step && frame_sp && frame_sp->HasDebugInformation ()) 2086 { 2087 SymbolContext sc(frame_sp->GetSymbolContext(eSymbolContextEverything)); 2088 new_plan_sp = QueueThreadPlanForStepInRange (abort_other_plans, 2089 sc.line_entry.range, 2090 sc, 2091 NULL, 2092 run_mode, 2093 avoid_code_without_debug_info); 2094 } 2095 else 2096 { 2097 new_plan_sp = QueueThreadPlanForStepSingleInstruction (false, 2098 abort_other_plans, 2099 run_mode); 2100 } 2101 2102 new_plan_sp->SetIsMasterPlan(true); 2103 new_plan_sp->SetOkayToDiscard(false); 2104 2105 // Why do we need to set the current thread by ID here??? 2106 process->GetThreadList().SetSelectedThreadByID (GetID()); 2107 error = process->Resume(); 2108 } 2109 else 2110 { 2111 error.SetErrorString("process not stopped"); 2112 } 2113 return error; 2114} 2115 2116Error 2117Thread::StepOver (bool source_step) 2118 2119{ 2120 Error error; 2121 Process *process = GetProcess().get(); 2122 if (StateIsStoppedState (process->GetState(), true)) 2123 { 2124 StackFrameSP frame_sp = GetStackFrameAtIndex (0); 2125 ThreadPlanSP new_plan_sp; 2126 2127 const lldb::RunMode run_mode = eOnlyThisThread; 2128 const bool abort_other_plans = false; 2129 2130 if (source_step && frame_sp && frame_sp->HasDebugInformation ()) 2131 { 2132 SymbolContext sc(frame_sp->GetSymbolContext(eSymbolContextEverything)); 2133 new_plan_sp = QueueThreadPlanForStepOverRange (abort_other_plans, 2134 sc.line_entry.range, 2135 sc, 2136 run_mode); 2137 } 2138 else 2139 { 2140 new_plan_sp = QueueThreadPlanForStepSingleInstruction (true, 2141 abort_other_plans, 2142 run_mode); 2143 } 2144 2145 new_plan_sp->SetIsMasterPlan(true); 2146 new_plan_sp->SetOkayToDiscard(false); 2147 2148 // Why do we need to set the current thread by ID here??? 2149 process->GetThreadList().SetSelectedThreadByID (GetID()); 2150 error = process->Resume(); 2151 } 2152 else 2153 { 2154 error.SetErrorString("process not stopped"); 2155 } 2156 return error; 2157} 2158 2159Error 2160Thread::StepOut () 2161{ 2162 Error error; 2163 Process *process = GetProcess().get(); 2164 if (StateIsStoppedState (process->GetState(), true)) 2165 { 2166 const bool first_instruction = false; 2167 const bool stop_other_threads = false; 2168 const bool abort_other_plans = false; 2169 2170 ThreadPlanSP new_plan_sp(QueueThreadPlanForStepOut (abort_other_plans, 2171 NULL, 2172 first_instruction, 2173 stop_other_threads, 2174 eVoteYes, 2175 eVoteNoOpinion, 2176 0)); 2177 2178 new_plan_sp->SetIsMasterPlan(true); 2179 new_plan_sp->SetOkayToDiscard(false); 2180 2181 // Why do we need to set the current thread by ID here??? 2182 process->GetThreadList().SetSelectedThreadByID (GetID()); 2183 error = process->Resume(); 2184 } 2185 else 2186 { 2187 error.SetErrorString("process not stopped"); 2188 } 2189 return error; 2190}