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_frame_mutex (Mutex::eMutexTypeRecursive), 58 m_curr_frames_sp (), 59 m_prev_frames_sp (), 60 m_resume_signal (LLDB_INVALID_SIGNAL_NUMBER), 61 m_resume_state (eStateRunning), 62 m_temporary_resume_state (eStateRunning), 63 m_unwinder_ap (), 64 m_destroy_called (false), 65 m_thread_stop_reason_stop_id (0) 66 67 { 68 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 69 if (log) 70 log->Printf ("%p Thread::Thread(tid = 0x%4.4llx)", this, GetID()); 71 72 QueueFundamentalPlan(true); 73 UpdateInstanceName(); 74 } 75 76 77 Thread::~Thread() 78 { 79 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 80 if (log) 81 log->Printf ("%p Thread::~Thread(tid = 0x%4.4llx)", this, GetID()); 82 /// If you hit this assert, it means your derived class forgot to call DoDestroy in its destructor. 83 assert (m_destroy_called); 84 } 85 86 void 87 Thread::DestroyThread () 88 { 89 m_plan_stack.clear(); 90 m_discarded_plan_stack.clear(); 91 m_completed_plan_stack.clear(); 92 m_destroy_called = true; 93 } 94 95 lldb::StopInfoSP 96 Thread::GetStopInfo () 97 { 98 ThreadPlanSP plan_sp (GetCompletedPlan()); 99 if (plan_sp) 100 return StopInfo::CreateStopReasonWithPlan (plan_sp, GetReturnValueObject()); 101 else 102 { 103 ProcessSP process_sp (GetProcess()); 104 if (process_sp 105 && m_actual_stop_info_sp 106 && m_actual_stop_info_sp->IsValid() 107 && m_thread_stop_reason_stop_id == process_sp->GetStopID()) 108 return m_actual_stop_info_sp; 109 else 110 return GetPrivateStopReason (); 111 } 112 } 113 114 void 115 Thread::SetStopInfo (const lldb::StopInfoSP &stop_info_sp) 116 { 117 m_actual_stop_info_sp = stop_info_sp; 118 if (m_actual_stop_info_sp) 119 m_actual_stop_info_sp->MakeStopInfoValid(); 120 ProcessSP process_sp (GetProcess()); 121 if (process_sp) 122 m_thread_stop_reason_stop_id = process_sp->GetStopID(); 123 else 124 m_thread_stop_reason_stop_id = UINT32_MAX; 125 } 126 127 void 128 Thread::SetStopInfoToNothing() 129 { 130 // Note, we can't just NULL out the private reason, or the native thread implementation will try to 131 // go calculate it again. For now, just set it to a Unix Signal with an invalid signal number. 132 SetStopInfo (StopInfo::CreateStopReasonWithSignal (*this, LLDB_INVALID_SIGNAL_NUMBER)); 133 } 134 135 bool 136 Thread::ThreadStoppedForAReason (void) 137 { 138 return GetPrivateStopReason () != NULL; 139 } 140 141 bool 142 Thread::CheckpointThreadState (ThreadStateCheckpoint &saved_state) 143 { 144 if (!SaveFrameZeroState(saved_state.register_backup)) 145 return false; 146 147 saved_state.stop_info_sp = GetStopInfo(); 148 ProcessSP process_sp (GetProcess()); 149 if (process_sp) 150 saved_state.orig_stop_id = process_sp->GetStopID(); 151 return true; 152 } 153 154 bool 155 Thread::RestoreThreadStateFromCheckpoint (ThreadStateCheckpoint &saved_state) 156 { 157 RestoreSaveFrameZero(saved_state.register_backup); 158 if (saved_state.stop_info_sp) 159 saved_state.stop_info_sp->MakeStopInfoValid(); 160 SetStopInfo(saved_state.stop_info_sp); 161 return true; 162 } 163 164 StateType 165 Thread::GetState() const 166 { 167 // If any other threads access this we will need a mutex for it 168 Mutex::Locker locker(m_state_mutex); 169 return m_state; 170 } 171 172 void 173 Thread::SetState(StateType state) 174 { 175 Mutex::Locker locker(m_state_mutex); 176 m_state = state; 177 } 178 179 void 180 Thread::WillStop() 181 { 182 ThreadPlan *current_plan = GetCurrentPlan(); 183 184 // FIXME: I may decide to disallow threads with no plans. In which 185 // case this should go to an assert. 186 187 if (!current_plan) 188 return; 189 190 current_plan->WillStop(); 191 } 192 193 void 194 Thread::SetupForResume () 195 { 196 if (GetResumeState() != eStateSuspended) 197 { 198 199 // If we're at a breakpoint push the step-over breakpoint plan. Do this before 200 // telling the current plan it will resume, since we might change what the current 201 // plan is. 202 203 lldb::addr_t pc = GetRegisterContext()->GetPC(); 204 BreakpointSiteSP bp_site_sp = GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 205 if (bp_site_sp && bp_site_sp->IsEnabled()) 206 { 207 // Note, don't assume there's a ThreadPlanStepOverBreakpoint, the target may not require anything 208 // special to step over a breakpoint. 209 210 ThreadPlan *cur_plan = GetCurrentPlan(); 211 212 if (cur_plan->GetKind() != ThreadPlan::eKindStepOverBreakpoint) 213 { 214 ThreadPlanStepOverBreakpoint *step_bp_plan = new ThreadPlanStepOverBreakpoint (*this); 215 if (step_bp_plan) 216 { 217 ThreadPlanSP step_bp_plan_sp; 218 step_bp_plan->SetPrivate (true); 219 220 if (GetCurrentPlan()->RunState() != eStateStepping) 221 { 222 step_bp_plan->SetAutoContinue(true); 223 } 224 step_bp_plan_sp.reset (step_bp_plan); 225 QueueThreadPlan (step_bp_plan_sp, false); 226 } 227 } 228 } 229 } 230 } 231 232 bool 233 Thread::WillResume (StateType resume_state) 234 { 235 // At this point clear the completed plan stack. 236 m_completed_plan_stack.clear(); 237 m_discarded_plan_stack.clear(); 238 239 SetTemporaryResumeState(resume_state); 240 241 // This is a little dubious, but we are trying to limit how often we actually fetch stop info from 242 // the target, 'cause that slows down single stepping. So assume that if we got to the point where 243 // we're about to resume, and we haven't yet had to fetch the stop reason, then it doesn't need to know 244 // about the fact that we are resuming... 245 const uint32_t process_stop_id = GetProcess()->GetStopID(); 246 if (m_thread_stop_reason_stop_id == process_stop_id && 247 (m_actual_stop_info_sp && m_actual_stop_info_sp->IsValid())) 248 { 249 StopInfo *stop_info = GetPrivateStopReason().get(); 250 if (stop_info) 251 stop_info->WillResume (resume_state); 252 } 253 254 // Tell all the plans that we are about to resume in case they need to clear any state. 255 // We distinguish between the plan on the top of the stack and the lower 256 // plans in case a plan needs to do any special business before it runs. 257 258 ThreadPlan *plan_ptr = GetCurrentPlan(); 259 plan_ptr->WillResume(resume_state, true); 260 261 while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL) 262 { 263 plan_ptr->WillResume (resume_state, false); 264 } 265 266 m_actual_stop_info_sp.reset(); 267 return true; 268 } 269 270 void 271 Thread::DidResume () 272 { 273 SetResumeSignal (LLDB_INVALID_SIGNAL_NUMBER); 274 } 275 276 bool 277 Thread::ShouldStop (Event* event_ptr) 278 { 279 ThreadPlan *current_plan = GetCurrentPlan(); 280 bool should_stop = true; 281 282 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 283 284 if (GetResumeState () == eStateSuspended) 285 { 286 if (log) 287 log->Printf ("Thread::%s for tid = 0x%4.4llx, should_stop = 0 (ignore since thread was suspended)", 288 __FUNCTION__, 289 GetID ()); 290 // log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx, should_stop = 0 (ignore since thread was suspended)", 291 // __FUNCTION__, 292 // GetID (), 293 // GetRegisterContext()->GetPC()); 294 return false; 295 } 296 297 if (GetTemporaryResumeState () == eStateSuspended) 298 { 299 if (log) 300 log->Printf ("Thread::%s for tid = 0x%4.4llx, should_stop = 0 (ignore since thread was suspended)", 301 __FUNCTION__, 302 GetID ()); 303 // log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx, should_stop = 0 (ignore since thread was suspended)", 304 // __FUNCTION__, 305 // GetID (), 306 // GetRegisterContext()->GetPC()); 307 return false; 308 } 309 310 if (ThreadStoppedForAReason() == false) 311 { 312 if (log) 313 log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx, should_stop = 0 (ignore since no stop reason)", 314 __FUNCTION__, 315 GetID (), 316 GetRegisterContext()->GetPC()); 317 return false; 318 } 319 320 if (log) 321 { 322 log->Printf ("Thread::%s for tid = 0x%4.4llx, pc = 0x%16.16llx", 323 __FUNCTION__, 324 GetID (), 325 GetRegisterContext()->GetPC()); 326 log->Printf ("^^^^^^^^ Thread::ShouldStop Begin ^^^^^^^^"); 327 StreamString s; 328 s.IndentMore(); 329 DumpThreadPlans(&s); 330 log->Printf ("Plan stack initial state:\n%s", s.GetData()); 331 } 332 333 // The top most plan always gets to do the trace log... 334 current_plan->DoTraceLog (); 335 336 // If the base plan doesn't understand why we stopped, then we have to find a plan that does. 337 // If that plan is still working, then we don't need to do any more work. If the plan that explains 338 // the stop is done, then we should pop all the plans below it, and pop it, and then let the plans above it decide 339 // whether they still need to do more work. 340 341 bool done_processing_current_plan = false; 342 343 if (!current_plan->PlanExplainsStop()) 344 { 345 if (current_plan->TracerExplainsStop()) 346 { 347 done_processing_current_plan = true; 348 should_stop = false; 349 } 350 else 351 { 352 // If the current plan doesn't explain the stop, then, find one that 353 // does and let it handle the situation. 354 ThreadPlan *plan_ptr = current_plan; 355 while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL) 356 { 357 if (plan_ptr->PlanExplainsStop()) 358 { 359 should_stop = plan_ptr->ShouldStop (event_ptr); 360 361 // plan_ptr explains the stop, next check whether plan_ptr is done, if so, then we should take it 362 // and all the plans below it off the stack. 363 364 if (plan_ptr->MischiefManaged()) 365 { 366 // We're going to pop the plans up to AND INCLUDING the plan that explains the stop. 367 plan_ptr = GetPreviousPlan(plan_ptr); 368 369 do 370 { 371 if (should_stop) 372 current_plan->WillStop(); 373 PopPlan(); 374 } 375 while ((current_plan = GetCurrentPlan()) != plan_ptr); 376 done_processing_current_plan = false; 377 } 378 else 379 done_processing_current_plan = true; 380 381 break; 382 } 383 384 } 385 } 386 } 387 388 if (!done_processing_current_plan) 389 { 390 bool over_ride_stop = current_plan->ShouldAutoContinue(event_ptr); 391 392 if (log) 393 log->Printf("Plan %s explains stop, auto-continue %i.", current_plan->GetName(), over_ride_stop); 394 395 // We're starting from the base plan, so just let it decide; 396 if (PlanIsBasePlan(current_plan)) 397 { 398 should_stop = current_plan->ShouldStop (event_ptr); 399 if (log) 400 log->Printf("Base plan says should stop: %i.", should_stop); 401 } 402 else 403 { 404 // Otherwise, don't let the base plan override what the other plans say to do, since 405 // presumably if there were other plans they would know what to do... 406 while (1) 407 { 408 if (PlanIsBasePlan(current_plan)) 409 break; 410 411 should_stop = current_plan->ShouldStop(event_ptr); 412 if (log) 413 log->Printf("Plan %s should stop: %d.", current_plan->GetName(), should_stop); 414 if (current_plan->MischiefManaged()) 415 { 416 if (should_stop) 417 current_plan->WillStop(); 418 419 // If a Master Plan wants to stop, and wants to stick on the stack, we let it. 420 // Otherwise, see if the plan's parent wants to stop. 421 422 if (should_stop && current_plan->IsMasterPlan() && !current_plan->OkayToDiscard()) 423 { 424 PopPlan(); 425 break; 426 } 427 else 428 { 429 430 PopPlan(); 431 432 current_plan = GetCurrentPlan(); 433 if (current_plan == NULL) 434 { 435 break; 436 } 437 } 438 439 } 440 else 441 { 442 break; 443 } 444 } 445 } 446 if (over_ride_stop) 447 should_stop = false; 448 } 449 450 if (log) 451 { 452 StreamString s; 453 s.IndentMore(); 454 DumpThreadPlans(&s); 455 log->Printf ("Plan stack final state:\n%s", s.GetData()); 456 log->Printf ("vvvvvvvv Thread::ShouldStop End (returning %i) vvvvvvvv", should_stop); 457 } 458 return should_stop; 459 } 460 461 Vote 462 Thread::ShouldReportStop (Event* event_ptr) 463 { 464 StateType thread_state = GetResumeState (); 465 StateType temp_thread_state = GetTemporaryResumeState(); 466 467 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 468 469 if (thread_state == eStateSuspended || thread_state == eStateInvalid) 470 { 471 if (log) 472 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote %i (state was suspended or invalid)\n", GetID(), eVoteNoOpinion); 473 return eVoteNoOpinion; 474 } 475 476 if (temp_thread_state == eStateSuspended || temp_thread_state == eStateInvalid) 477 { 478 if (log) 479 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote %i (temporary state was suspended or invalid)\n", GetID(), eVoteNoOpinion); 480 return eVoteNoOpinion; 481 } 482 483 if (!ThreadStoppedForAReason()) 484 { 485 if (log) 486 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote %i (thread didn't stop for a reason.)\n", GetID(), eVoteNoOpinion); 487 return eVoteNoOpinion; 488 } 489 490 if (m_completed_plan_stack.size() > 0) 491 { 492 // Don't use GetCompletedPlan here, since that suppresses private plans. 493 if (log) 494 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote for complete stack's back plan\n", GetID()); 495 return m_completed_plan_stack.back()->ShouldReportStop (event_ptr); 496 } 497 else 498 { 499 if (log) 500 log->Printf ("Thread::ShouldReportStop() tid = 0x%4.4llx: returning vote for current plan\n", GetID()); 501 return GetCurrentPlan()->ShouldReportStop (event_ptr); 502 } 503 } 504 505 Vote 506 Thread::ShouldReportRun (Event* event_ptr) 507 { 508 StateType thread_state = GetResumeState (); 509 510 if (thread_state == eStateSuspended 511 || thread_state == eStateInvalid) 512 { 513 return eVoteNoOpinion; 514 } 515 516 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 517 if (m_completed_plan_stack.size() > 0) 518 { 519 // Don't use GetCompletedPlan here, since that suppresses private plans. 520 if (log) 521 log->Printf ("Current Plan for thread %d (0x%4.4llx): %s being asked whether we should report run.", 522 GetIndexID(), 523 GetID(), 524 m_completed_plan_stack.back()->GetName()); 525 526 return m_completed_plan_stack.back()->ShouldReportRun (event_ptr); 527 } 528 else 529 { 530 if (log) 531 log->Printf ("Current Plan for thread %d (0x%4.4llx): %s being asked whether we should report run.", 532 GetIndexID(), 533 GetID(), 534 GetCurrentPlan()->GetName()); 535 536 return GetCurrentPlan()->ShouldReportRun (event_ptr); 537 } 538 } 539 540 bool 541 Thread::MatchesSpec (const ThreadSpec *spec) 542 { 543 if (spec == NULL) 544 return true; 545 546 return spec->ThreadPassesBasicTests(*this); 547 } 548 549 void 550 Thread::PushPlan (ThreadPlanSP &thread_plan_sp) 551 { 552 if (thread_plan_sp) 553 { 554 // If the thread plan doesn't already have a tracer, give it its parent's tracer: 555 if (!thread_plan_sp->GetThreadPlanTracer()) 556 thread_plan_sp->SetThreadPlanTracer(m_plan_stack.back()->GetThreadPlanTracer()); 557 m_plan_stack.push_back (thread_plan_sp); 558 559 thread_plan_sp->DidPush(); 560 561 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 562 if (log) 563 { 564 StreamString s; 565 thread_plan_sp->GetDescription (&s, lldb::eDescriptionLevelFull); 566 log->Printf("Pushing plan: \"%s\", tid = 0x%4.4llx.", 567 s.GetData(), 568 thread_plan_sp->GetThread().GetID()); 569 } 570 } 571 } 572 573 void 574 Thread::PopPlan () 575 { 576 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 577 578 if (m_plan_stack.empty()) 579 return; 580 else 581 { 582 ThreadPlanSP &plan = m_plan_stack.back(); 583 if (log) 584 { 585 log->Printf("Popping plan: \"%s\", tid = 0x%4.4llx.", plan->GetName(), plan->GetThread().GetID()); 586 } 587 m_completed_plan_stack.push_back (plan); 588 plan->WillPop(); 589 m_plan_stack.pop_back(); 590 } 591 } 592 593 void 594 Thread::DiscardPlan () 595 { 596 if (m_plan_stack.size() > 1) 597 { 598 ThreadPlanSP &plan = m_plan_stack.back(); 599 m_discarded_plan_stack.push_back (plan); 600 plan->WillPop(); 601 m_plan_stack.pop_back(); 602 } 603 } 604 605 ThreadPlan * 606 Thread::GetCurrentPlan () 607 { 608 if (m_plan_stack.empty()) 609 return NULL; 610 else 611 return m_plan_stack.back().get(); 612 } 613 614 ThreadPlanSP 615 Thread::GetCompletedPlan () 616 { 617 ThreadPlanSP empty_plan_sp; 618 if (!m_completed_plan_stack.empty()) 619 { 620 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 621 { 622 ThreadPlanSP completed_plan_sp; 623 completed_plan_sp = m_completed_plan_stack[i]; 624 if (!completed_plan_sp->GetPrivate ()) 625 return completed_plan_sp; 626 } 627 } 628 return empty_plan_sp; 629 } 630 631 ValueObjectSP 632 Thread::GetReturnValueObject () 633 { 634 if (!m_completed_plan_stack.empty()) 635 { 636 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 637 { 638 ValueObjectSP return_valobj_sp; 639 return_valobj_sp = m_completed_plan_stack[i]->GetReturnValueObject(); 640 if (return_valobj_sp) 641 return return_valobj_sp; 642 } 643 } 644 return ValueObjectSP(); 645 } 646 647 bool 648 Thread::IsThreadPlanDone (ThreadPlan *plan) 649 { 650 if (!m_completed_plan_stack.empty()) 651 { 652 for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--) 653 { 654 if (m_completed_plan_stack[i].get() == plan) 655 return true; 656 } 657 } 658 return false; 659 } 660 661 bool 662 Thread::WasThreadPlanDiscarded (ThreadPlan *plan) 663 { 664 if (!m_discarded_plan_stack.empty()) 665 { 666 for (int i = m_discarded_plan_stack.size() - 1; i >= 0; i--) 667 { 668 if (m_discarded_plan_stack[i].get() == plan) 669 return true; 670 } 671 } 672 return false; 673 } 674 675 ThreadPlan * 676 Thread::GetPreviousPlan (ThreadPlan *current_plan) 677 { 678 if (current_plan == NULL) 679 return NULL; 680 681 int stack_size = m_completed_plan_stack.size(); 682 for (int i = stack_size - 1; i > 0; i--) 683 { 684 if (current_plan == m_completed_plan_stack[i].get()) 685 return m_completed_plan_stack[i-1].get(); 686 } 687 688 if (stack_size > 0 && m_completed_plan_stack[0].get() == current_plan) 689 { 690 if (m_plan_stack.size() > 0) 691 return m_plan_stack.back().get(); 692 else 693 return NULL; 694 } 695 696 stack_size = m_plan_stack.size(); 697 for (int i = stack_size - 1; i > 0; i--) 698 { 699 if (current_plan == m_plan_stack[i].get()) 700 return m_plan_stack[i-1].get(); 701 } 702 return NULL; 703 } 704 705 void 706 Thread::QueueThreadPlan (ThreadPlanSP &thread_plan_sp, bool abort_other_plans) 707 { 708 if (abort_other_plans) 709 DiscardThreadPlans(true); 710 711 PushPlan (thread_plan_sp); 712 } 713 714 715 void 716 Thread::EnableTracer (bool value, bool single_stepping) 717 { 718 int stack_size = m_plan_stack.size(); 719 for (int i = 0; i < stack_size; i++) 720 { 721 if (m_plan_stack[i]->GetThreadPlanTracer()) 722 { 723 m_plan_stack[i]->GetThreadPlanTracer()->EnableTracing(value); 724 m_plan_stack[i]->GetThreadPlanTracer()->EnableSingleStep(single_stepping); 725 } 726 } 727 } 728 729 void 730 Thread::SetTracer (lldb::ThreadPlanTracerSP &tracer_sp) 731 { 732 int stack_size = m_plan_stack.size(); 733 for (int i = 0; i < stack_size; i++) 734 m_plan_stack[i]->SetThreadPlanTracer(tracer_sp); 735 } 736 737 void 738 Thread::DiscardThreadPlansUpToPlan (lldb::ThreadPlanSP &up_to_plan_sp) 739 { 740 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 741 if (log) 742 { 743 log->Printf("Discarding thread plans for thread tid = 0x%4.4llx, up to %p", GetID(), up_to_plan_sp.get()); 744 } 745 746 int stack_size = m_plan_stack.size(); 747 748 // If the input plan is NULL, discard all plans. Otherwise make sure this plan is in the 749 // stack, and if so discard up to and including it. 750 751 if (up_to_plan_sp.get() == NULL) 752 { 753 for (int i = stack_size - 1; i > 0; i--) 754 DiscardPlan(); 755 } 756 else 757 { 758 bool found_it = false; 759 for (int i = stack_size - 1; i > 0; i--) 760 { 761 if (m_plan_stack[i] == up_to_plan_sp) 762 found_it = true; 763 } 764 if (found_it) 765 { 766 bool last_one = false; 767 for (int i = stack_size - 1; i > 0 && !last_one ; i--) 768 { 769 if (GetCurrentPlan() == up_to_plan_sp.get()) 770 last_one = true; 771 DiscardPlan(); 772 } 773 } 774 } 775 return; 776 } 777 778 void 779 Thread::DiscardThreadPlans(bool force) 780 { 781 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 782 if (log) 783 { 784 log->Printf("Discarding thread plans for thread (tid = 0x%4.4llx, force %d)", GetID(), force); 785 } 786 787 if (force) 788 { 789 int stack_size = m_plan_stack.size(); 790 for (int i = stack_size - 1; i > 0; i--) 791 { 792 DiscardPlan(); 793 } 794 return; 795 } 796 797 while (1) 798 { 799 800 int master_plan_idx; 801 bool discard; 802 803 // Find the first master plan, see if it wants discarding, and if yes discard up to it. 804 for (master_plan_idx = m_plan_stack.size() - 1; master_plan_idx >= 0; master_plan_idx--) 805 { 806 if (m_plan_stack[master_plan_idx]->IsMasterPlan()) 807 { 808 discard = m_plan_stack[master_plan_idx]->OkayToDiscard(); 809 break; 810 } 811 } 812 813 if (discard) 814 { 815 // First pop all the dependent plans: 816 for (int i = m_plan_stack.size() - 1; i > master_plan_idx; i--) 817 { 818 819 // FIXME: Do we need a finalize here, or is the rule that "PrepareForStop" 820 // for the plan leaves it in a state that it is safe to pop the plan 821 // with no more notice? 822 DiscardPlan(); 823 } 824 825 // Now discard the master plan itself. 826 // The bottom-most plan never gets discarded. "OkayToDiscard" for it means 827 // discard it's dependent plans, but not it... 828 if (master_plan_idx > 0) 829 { 830 DiscardPlan(); 831 } 832 } 833 else 834 { 835 // If the master plan doesn't want to get discarded, then we're done. 836 break; 837 } 838 839 } 840 } 841 842 ThreadPlan * 843 Thread::QueueFundamentalPlan (bool abort_other_plans) 844 { 845 ThreadPlanSP thread_plan_sp (new ThreadPlanBase(*this)); 846 QueueThreadPlan (thread_plan_sp, abort_other_plans); 847 return thread_plan_sp.get(); 848 } 849 850 ThreadPlan * 851 Thread::QueueThreadPlanForStepSingleInstruction 852 ( 853 bool step_over, 854 bool abort_other_plans, 855 bool stop_other_threads 856 ) 857 { 858 ThreadPlanSP thread_plan_sp (new ThreadPlanStepInstruction (*this, step_over, stop_other_threads, eVoteNoOpinion, eVoteNoOpinion)); 859 QueueThreadPlan (thread_plan_sp, abort_other_plans); 860 return thread_plan_sp.get(); 861 } 862 863 ThreadPlan * 864 Thread::QueueThreadPlanForStepRange 865 ( 866 bool abort_other_plans, 867 StepType type, 868 const AddressRange &range, 869 const SymbolContext &addr_context, 870 lldb::RunMode stop_other_threads, 871 bool avoid_code_without_debug_info 872 ) 873 { 874 ThreadPlanSP thread_plan_sp; 875 if (type == eStepTypeInto) 876 { 877 ThreadPlanStepInRange *plan = new ThreadPlanStepInRange (*this, range, addr_context, stop_other_threads); 878 if (avoid_code_without_debug_info) 879 plan->GetFlags().Set (ThreadPlanShouldStopHere::eAvoidNoDebug); 880 else 881 plan->GetFlags().Clear (ThreadPlanShouldStopHere::eAvoidNoDebug); 882 thread_plan_sp.reset (plan); 883 } 884 else 885 thread_plan_sp.reset (new ThreadPlanStepOverRange (*this, range, addr_context, stop_other_threads)); 886 887 QueueThreadPlan (thread_plan_sp, abort_other_plans); 888 return thread_plan_sp.get(); 889 } 890 891 892 ThreadPlan * 893 Thread::QueueThreadPlanForStepOverBreakpointPlan (bool abort_other_plans) 894 { 895 ThreadPlanSP thread_plan_sp (new ThreadPlanStepOverBreakpoint (*this)); 896 QueueThreadPlan (thread_plan_sp, abort_other_plans); 897 return thread_plan_sp.get(); 898 } 899 900 ThreadPlan * 901 Thread::QueueThreadPlanForStepOut 902 ( 903 bool abort_other_plans, 904 SymbolContext *addr_context, 905 bool first_insn, 906 bool stop_other_threads, 907 Vote stop_vote, 908 Vote run_vote, 909 uint32_t frame_idx 910 ) 911 { 912 ThreadPlanSP thread_plan_sp (new ThreadPlanStepOut (*this, 913 addr_context, 914 first_insn, 915 stop_other_threads, 916 stop_vote, 917 run_vote, 918 frame_idx)); 919 QueueThreadPlan (thread_plan_sp, abort_other_plans); 920 return thread_plan_sp.get(); 921 } 922 923 ThreadPlan * 924 Thread::QueueThreadPlanForStepThrough (bool abort_other_plans, bool stop_other_threads) 925 { 926 ThreadPlanSP thread_plan_sp(new ThreadPlanStepThrough (*this, stop_other_threads)); 927 if (!thread_plan_sp || !thread_plan_sp->ValidatePlan (NULL)) 928 return NULL; 929 930 QueueThreadPlan (thread_plan_sp, abort_other_plans); 931 return thread_plan_sp.get(); 932 } 933 934 ThreadPlan * 935 Thread::QueueThreadPlanForCallFunction (bool abort_other_plans, 936 Address& function, 937 lldb::addr_t arg, 938 bool stop_other_threads, 939 bool discard_on_error) 940 { 941 ThreadPlanSP thread_plan_sp (new ThreadPlanCallFunction (*this, function, ClangASTType(), arg, stop_other_threads, discard_on_error)); 942 QueueThreadPlan (thread_plan_sp, abort_other_plans); 943 return thread_plan_sp.get(); 944 } 945 946 ThreadPlan * 947 Thread::QueueThreadPlanForRunToAddress (bool abort_other_plans, 948 Address &target_addr, 949 bool stop_other_threads) 950 { 951 ThreadPlanSP thread_plan_sp (new ThreadPlanRunToAddress (*this, target_addr, stop_other_threads)); 952 QueueThreadPlan (thread_plan_sp, abort_other_plans); 953 return thread_plan_sp.get(); 954 } 955 956 ThreadPlan * 957 Thread::QueueThreadPlanForStepUntil (bool abort_other_plans, 958 lldb::addr_t *address_list, 959 size_t num_addresses, 960 bool stop_other_threads, 961 uint32_t frame_idx) 962 { 963 ThreadPlanSP thread_plan_sp (new ThreadPlanStepUntil (*this, address_list, num_addresses, stop_other_threads, frame_idx)); 964 QueueThreadPlan (thread_plan_sp, abort_other_plans); 965 return thread_plan_sp.get(); 966 967 } 968 969 uint32_t 970 Thread::GetIndexID () const 971 { 972 return m_index_id; 973 } 974 975 void 976 Thread::DumpThreadPlans (lldb_private::Stream *s) const 977 { 978 uint32_t stack_size = m_plan_stack.size(); 979 int i; 980 s->Indent(); 981 s->Printf ("Plan Stack for thread #%u: tid = 0x%4.4llx, stack_size = %d\n", GetIndexID(), GetID(), stack_size); 982 for (i = stack_size - 1; i >= 0; i--) 983 { 984 s->IndentMore(); 985 s->Indent(); 986 s->Printf ("Element %d: ", i); 987 m_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 988 s->EOL(); 989 s->IndentLess(); 990 } 991 992 stack_size = m_completed_plan_stack.size(); 993 if (stack_size > 0) 994 { 995 s->Indent(); 996 s->Printf ("Completed Plan Stack: %d elements.\n", stack_size); 997 for (i = stack_size - 1; i >= 0; i--) 998 { 999 s->IndentMore(); 1000 s->Indent(); 1001 s->Printf ("Element %d: ", i); 1002 m_completed_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 1003 s->EOL(); 1004 s->IndentLess(); 1005 } 1006 } 1007 1008 stack_size = m_discarded_plan_stack.size(); 1009 if (stack_size > 0) 1010 { 1011 s->Indent(); 1012 s->Printf ("Discarded Plan Stack: %d elements.\n", stack_size); 1013 for (i = stack_size - 1; i >= 0; i--) 1014 { 1015 s->IndentMore(); 1016 s->Indent(); 1017 s->Printf ("Element %d: ", i); 1018 m_discarded_plan_stack[i]->GetDescription (s, eDescriptionLevelFull); 1019 s->EOL(); 1020 s->IndentLess(); 1021 } 1022 } 1023 1024 } 1025 1026 TargetSP 1027 Thread::CalculateTarget () 1028 { 1029 TargetSP target_sp; 1030 ProcessSP process_sp(GetProcess()); 1031 if (process_sp) 1032 target_sp = process_sp->CalculateTarget(); 1033 return target_sp; 1034 1035 } 1036 1037 ProcessSP 1038 Thread::CalculateProcess () 1039 { 1040 return GetProcess(); 1041 } 1042 1043 ThreadSP 1044 Thread::CalculateThread () 1045 { 1046 return shared_from_this(); 1047 } 1048 1049 StackFrameSP 1050 Thread::CalculateStackFrame () 1051 { 1052 return StackFrameSP(); 1053 } 1054 1055 void 1056 Thread::CalculateExecutionContext (ExecutionContext &exe_ctx) 1057 { 1058 exe_ctx.SetContext (shared_from_this()); 1059 } 1060 1061 1062 StackFrameListSP 1063 Thread::GetStackFrameList () 1064 { 1065 StackFrameListSP frame_list_sp; 1066 Mutex::Locker locker(m_frame_mutex); 1067 if (m_curr_frames_sp) 1068 { 1069 frame_list_sp = m_curr_frames_sp; 1070 } 1071 else 1072 { 1073 frame_list_sp.reset(new StackFrameList (*this, m_prev_frames_sp, true)); 1074 m_curr_frames_sp = frame_list_sp; 1075 } 1076 return frame_list_sp; 1077 } 1078 1079 void 1080 Thread::ClearStackFrames () 1081 { 1082 Mutex::Locker locker(m_frame_mutex); 1083 1084 // Only store away the old "reference" StackFrameList if we got all its frames: 1085 // FIXME: At some point we can try to splice in the frames we have fetched into 1086 // the new frame as we make it, but let's not try that now. 1087 if (m_curr_frames_sp && m_curr_frames_sp->GetAllFramesFetched()) 1088 m_prev_frames_sp.swap (m_curr_frames_sp); 1089 m_curr_frames_sp.reset(); 1090 } 1091 1092 lldb::StackFrameSP 1093 Thread::GetFrameWithConcreteFrameIndex (uint32_t unwind_idx) 1094 { 1095 return GetStackFrameList()->GetFrameWithConcreteFrameIndex (unwind_idx); 1096 } 1097 1098 void 1099 Thread::DumpUsingSettingsFormat (Stream &strm, uint32_t frame_idx) 1100 { 1101 ExecutionContext exe_ctx (shared_from_this()); 1102 Process *process = exe_ctx.GetProcessPtr(); 1103 if (process == NULL) 1104 return; 1105 1106 StackFrameSP frame_sp; 1107 SymbolContext frame_sc; 1108 if (frame_idx != LLDB_INVALID_INDEX32) 1109 { 1110 frame_sp = GetStackFrameAtIndex (frame_idx); 1111 if (frame_sp) 1112 { 1113 exe_ctx.SetFrameSP(frame_sp); 1114 frame_sc = frame_sp->GetSymbolContext(eSymbolContextEverything); 1115 } 1116 } 1117 1118 const char *thread_format = exe_ctx.GetTargetRef().GetDebugger().GetThreadFormat(); 1119 assert (thread_format); 1120 const char *end = NULL; 1121 Debugger::FormatPrompt (thread_format, 1122 frame_sp ? &frame_sc : NULL, 1123 &exe_ctx, 1124 NULL, 1125 strm, 1126 &end); 1127 } 1128 1129 void 1130 Thread::SettingsInitialize () 1131 { 1132 UserSettingsController::InitializeSettingsController (GetSettingsController(), 1133 SettingsController::global_settings_table, 1134 SettingsController::instance_settings_table); 1135 1136 // Now call SettingsInitialize() on each 'child' setting of Thread. 1137 // Currently there are none. 1138 } 1139 1140 void 1141 Thread::SettingsTerminate () 1142 { 1143 // Must call SettingsTerminate() on each 'child' setting of Thread before terminating Thread settings. 1144 // Currently there are none. 1145 1146 // Now terminate Thread Settings. 1147 1148 UserSettingsControllerSP &usc = GetSettingsController(); 1149 UserSettingsController::FinalizeSettingsController (usc); 1150 usc.reset(); 1151 } 1152 1153 UserSettingsControllerSP & 1154 Thread::GetSettingsController () 1155 { 1156 static UserSettingsControllerSP g_settings_controller_sp; 1157 if (!g_settings_controller_sp) 1158 { 1159 g_settings_controller_sp.reset (new Thread::SettingsController); 1160 // The first shared pointer to Target::SettingsController in 1161 // g_settings_controller_sp must be fully created above so that 1162 // the TargetInstanceSettings can use a weak_ptr to refer back 1163 // to the master setttings controller 1164 InstanceSettingsSP default_instance_settings_sp (new ThreadInstanceSettings (g_settings_controller_sp, 1165 false, 1166 InstanceSettings::GetDefaultName().AsCString())); 1167 1168 g_settings_controller_sp->SetDefaultInstanceSettings (default_instance_settings_sp); 1169 } 1170 return g_settings_controller_sp; 1171 } 1172 1173 void 1174 Thread::UpdateInstanceName () 1175 { 1176 StreamString sstr; 1177 const char *name = GetName(); 1178 1179 if (name && name[0] != '\0') 1180 sstr.Printf ("%s", name); 1181 else if ((GetIndexID() != 0) || (GetID() != 0)) 1182 sstr.Printf ("0x%4.4x", GetIndexID()); 1183 1184 if (sstr.GetSize() > 0) 1185 Thread::GetSettingsController()->RenameInstanceSettings (GetInstanceName().AsCString(), sstr.GetData()); 1186 } 1187 1188 lldb::StackFrameSP 1189 Thread::GetStackFrameSPForStackFramePtr (StackFrame *stack_frame_ptr) 1190 { 1191 return GetStackFrameList()->GetStackFrameSPForStackFramePtr (stack_frame_ptr); 1192 } 1193 1194 const char * 1195 Thread::StopReasonAsCString (lldb::StopReason reason) 1196 { 1197 switch (reason) 1198 { 1199 case eStopReasonInvalid: return "invalid"; 1200 case eStopReasonNone: return "none"; 1201 case eStopReasonTrace: return "trace"; 1202 case eStopReasonBreakpoint: return "breakpoint"; 1203 case eStopReasonWatchpoint: return "watchpoint"; 1204 case eStopReasonSignal: return "signal"; 1205 case eStopReasonException: return "exception"; 1206 case eStopReasonPlanComplete: return "plan complete"; 1207 } 1208 1209 1210 static char unknown_state_string[64]; 1211 snprintf(unknown_state_string, sizeof (unknown_state_string), "StopReason = %i", reason); 1212 return unknown_state_string; 1213 } 1214 1215 const char * 1216 Thread::RunModeAsCString (lldb::RunMode mode) 1217 { 1218 switch (mode) 1219 { 1220 case eOnlyThisThread: return "only this thread"; 1221 case eAllThreads: return "all threads"; 1222 case eOnlyDuringStepping: return "only during stepping"; 1223 } 1224 1225 static char unknown_state_string[64]; 1226 snprintf(unknown_state_string, sizeof (unknown_state_string), "RunMode = %i", mode); 1227 return unknown_state_string; 1228 } 1229 1230 size_t 1231 Thread::GetStatus (Stream &strm, uint32_t start_frame, uint32_t num_frames, uint32_t num_frames_with_source) 1232 { 1233 ExecutionContext exe_ctx (shared_from_this()); 1234 Target *target = exe_ctx.GetTargetPtr(); 1235 Process *process = exe_ctx.GetProcessPtr(); 1236 size_t num_frames_shown = 0; 1237 strm.Indent(); 1238 bool is_selected = false; 1239 if (process) 1240 { 1241 if (process->GetThreadList().GetSelectedThread().get() == this) 1242 is_selected = true; 1243 } 1244 strm.Printf("%c ", is_selected ? '*' : ' '); 1245 if (target && target->GetDebugger().GetUseExternalEditor()) 1246 { 1247 StackFrameSP frame_sp = GetStackFrameAtIndex(start_frame); 1248 if (frame_sp) 1249 { 1250 SymbolContext frame_sc(frame_sp->GetSymbolContext (eSymbolContextLineEntry)); 1251 if (frame_sc.line_entry.line != 0 && frame_sc.line_entry.file) 1252 { 1253 Host::OpenFileInExternalEditor (frame_sc.line_entry.file, frame_sc.line_entry.line); 1254 } 1255 } 1256 } 1257 1258 DumpUsingSettingsFormat (strm, start_frame); 1259 1260 if (num_frames > 0) 1261 { 1262 strm.IndentMore(); 1263 1264 const bool show_frame_info = true; 1265 const uint32_t source_lines_before = 3; 1266 const uint32_t source_lines_after = 3; 1267 strm.IndentMore (); 1268 num_frames_shown = GetStackFrameList ()->GetStatus (strm, 1269 start_frame, 1270 num_frames, 1271 show_frame_info, 1272 num_frames_with_source, 1273 source_lines_before, 1274 source_lines_after); 1275 strm.IndentLess(); 1276 strm.IndentLess(); 1277 } 1278 return num_frames_shown; 1279 } 1280 1281 size_t 1282 Thread::GetStackFrameStatus (Stream& strm, 1283 uint32_t first_frame, 1284 uint32_t num_frames, 1285 bool show_frame_info, 1286 uint32_t num_frames_with_source, 1287 uint32_t source_lines_before, 1288 uint32_t source_lines_after) 1289 { 1290 return GetStackFrameList()->GetStatus (strm, 1291 first_frame, 1292 num_frames, 1293 show_frame_info, 1294 num_frames_with_source, 1295 source_lines_before, 1296 source_lines_after); 1297 } 1298 1299 bool 1300 Thread::SaveFrameZeroState (RegisterCheckpoint &checkpoint) 1301 { 1302 lldb::StackFrameSP frame_sp(GetStackFrameAtIndex (0)); 1303 if (frame_sp) 1304 { 1305 checkpoint.SetStackID(frame_sp->GetStackID()); 1306 return frame_sp->GetRegisterContext()->ReadAllRegisterValues (checkpoint.GetData()); 1307 } 1308 return false; 1309 } 1310 1311 bool 1312 Thread::RestoreSaveFrameZero (const RegisterCheckpoint &checkpoint) 1313 { 1314 lldb::StackFrameSP frame_sp(GetStackFrameAtIndex (0)); 1315 if (frame_sp) 1316 { 1317 bool ret = frame_sp->GetRegisterContext()->WriteAllRegisterValues (checkpoint.GetData()); 1318 1319 // Clear out all stack frames as our world just changed. 1320 ClearStackFrames(); 1321 frame_sp->GetRegisterContext()->InvalidateIfNeeded(true); 1322 1323 return ret; 1324 } 1325 return false; 1326 } 1327 1328 Unwind * 1329 Thread::GetUnwinder () 1330 { 1331 if (m_unwinder_ap.get() == NULL) 1332 { 1333 const ArchSpec target_arch (CalculateTarget()->GetArchitecture ()); 1334 const llvm::Triple::ArchType machine = target_arch.GetMachine(); 1335 switch (machine) 1336 { 1337 case llvm::Triple::x86_64: 1338 case llvm::Triple::x86: 1339 case llvm::Triple::arm: 1340 case llvm::Triple::thumb: 1341 m_unwinder_ap.reset (new UnwindLLDB (*this)); 1342 break; 1343 1344 default: 1345 if (target_arch.GetTriple().getVendor() == llvm::Triple::Apple) 1346 m_unwinder_ap.reset (new UnwindMacOSXFrameBackchain (*this)); 1347 break; 1348 } 1349 } 1350 return m_unwinder_ap.get(); 1351 } 1352 1353 1354 #pragma mark "Thread::SettingsController" 1355 //-------------------------------------------------------------- 1356 // class Thread::SettingsController 1357 //-------------------------------------------------------------- 1358 1359 Thread::SettingsController::SettingsController () : 1360 UserSettingsController ("thread", Process::GetSettingsController()) 1361 { 1362 } 1363 1364 Thread::SettingsController::~SettingsController () 1365 { 1366 } 1367 1368 lldb::InstanceSettingsSP 1369 Thread::SettingsController::CreateInstanceSettings (const char *instance_name) 1370 { 1371 lldb::InstanceSettingsSP new_settings_sp (new ThreadInstanceSettings (GetSettingsController(), 1372 false, 1373 instance_name)); 1374 return new_settings_sp; 1375 } 1376 1377 #pragma mark "ThreadInstanceSettings" 1378 //-------------------------------------------------------------- 1379 // class ThreadInstanceSettings 1380 //-------------------------------------------------------------- 1381 1382 ThreadInstanceSettings::ThreadInstanceSettings (const UserSettingsControllerSP &owner_sp, bool live_instance, const char *name) : 1383 InstanceSettings (owner_sp, name ? name : InstanceSettings::InvalidName().AsCString(), live_instance), 1384 m_avoid_regexp_ap (), 1385 m_trace_enabled (false) 1386 { 1387 // CopyInstanceSettings is a pure virtual function in InstanceSettings; it therefore cannot be called 1388 // until the vtables for ThreadInstanceSettings are properly set up, i.e. AFTER all the initializers. 1389 // For this reason it has to be called here, rather than in the initializer or in the parent constructor. 1390 // This is true for CreateInstanceName() too. 1391 1392 if (GetInstanceName() == InstanceSettings::InvalidName()) 1393 { 1394 ChangeInstanceName (std::string (CreateInstanceName().AsCString())); 1395 owner_sp->RegisterInstanceSettings (this); 1396 } 1397 1398 if (live_instance) 1399 { 1400 CopyInstanceSettings (owner_sp->FindPendingSettings (m_instance_name),false); 1401 } 1402 } 1403 1404 ThreadInstanceSettings::ThreadInstanceSettings (const ThreadInstanceSettings &rhs) : 1405 InstanceSettings (Thread::GetSettingsController(), CreateInstanceName().AsCString()), 1406 m_avoid_regexp_ap (), 1407 m_trace_enabled (rhs.m_trace_enabled) 1408 { 1409 if (m_instance_name != InstanceSettings::GetDefaultName()) 1410 { 1411 UserSettingsControllerSP owner_sp (m_owner_wp.lock()); 1412 if (owner_sp) 1413 { 1414 CopyInstanceSettings (owner_sp->FindPendingSettings (m_instance_name), false); 1415 owner_sp->RemovePendingSettings (m_instance_name); 1416 } 1417 } 1418 if (rhs.m_avoid_regexp_ap.get() != NULL) 1419 m_avoid_regexp_ap.reset(new RegularExpression(rhs.m_avoid_regexp_ap->GetText())); 1420 } 1421 1422 ThreadInstanceSettings::~ThreadInstanceSettings () 1423 { 1424 } 1425 1426 ThreadInstanceSettings& 1427 ThreadInstanceSettings::operator= (const ThreadInstanceSettings &rhs) 1428 { 1429 if (this != &rhs) 1430 { 1431 if (rhs.m_avoid_regexp_ap.get() != NULL) 1432 m_avoid_regexp_ap.reset(new RegularExpression(rhs.m_avoid_regexp_ap->GetText())); 1433 else 1434 m_avoid_regexp_ap.reset(NULL); 1435 } 1436 m_trace_enabled = rhs.m_trace_enabled; 1437 return *this; 1438 } 1439 1440 1441 void 1442 ThreadInstanceSettings::UpdateInstanceSettingsVariable (const ConstString &var_name, 1443 const char *index_value, 1444 const char *value, 1445 const ConstString &instance_name, 1446 const SettingEntry &entry, 1447 VarSetOperationType op, 1448 Error &err, 1449 bool pending) 1450 { 1451 if (var_name == StepAvoidRegexpVarName()) 1452 { 1453 std::string regexp_text; 1454 if (m_avoid_regexp_ap.get() != NULL) 1455 regexp_text.append (m_avoid_regexp_ap->GetText()); 1456 UserSettingsController::UpdateStringVariable (op, regexp_text, value, err); 1457 if (regexp_text.empty()) 1458 m_avoid_regexp_ap.reset(); 1459 else 1460 { 1461 m_avoid_regexp_ap.reset(new RegularExpression(regexp_text.c_str())); 1462 1463 } 1464 } 1465 else if (var_name == GetTraceThreadVarName()) 1466 { 1467 bool success; 1468 bool result = Args::StringToBoolean(value, false, &success); 1469 1470 if (success) 1471 { 1472 m_trace_enabled = result; 1473 if (!pending) 1474 { 1475 Thread *myself = static_cast<Thread *> (this); 1476 myself->EnableTracer(m_trace_enabled, true); 1477 } 1478 } 1479 else 1480 { 1481 err.SetErrorStringWithFormat ("Bad value \"%s\" for trace-thread, should be Boolean.", value); 1482 } 1483 1484 } 1485 } 1486 1487 void 1488 ThreadInstanceSettings::CopyInstanceSettings (const lldb::InstanceSettingsSP &new_settings, 1489 bool pending) 1490 { 1491 if (new_settings.get() == NULL) 1492 return; 1493 1494 ThreadInstanceSettings *new_process_settings = (ThreadInstanceSettings *) new_settings.get(); 1495 if (new_process_settings->GetSymbolsToAvoidRegexp() != NULL) 1496 m_avoid_regexp_ap.reset (new RegularExpression (new_process_settings->GetSymbolsToAvoidRegexp()->GetText())); 1497 else 1498 m_avoid_regexp_ap.reset (); 1499 } 1500 1501 bool 1502 ThreadInstanceSettings::GetInstanceSettingsValue (const SettingEntry &entry, 1503 const ConstString &var_name, 1504 StringList &value, 1505 Error *err) 1506 { 1507 if (var_name == StepAvoidRegexpVarName()) 1508 { 1509 if (m_avoid_regexp_ap.get() != NULL) 1510 { 1511 std::string regexp_text("\""); 1512 regexp_text.append(m_avoid_regexp_ap->GetText()); 1513 regexp_text.append ("\""); 1514 value.AppendString (regexp_text.c_str()); 1515 } 1516 1517 } 1518 else if (var_name == GetTraceThreadVarName()) 1519 { 1520 value.AppendString(m_trace_enabled ? "true" : "false"); 1521 } 1522 else 1523 { 1524 if (err) 1525 err->SetErrorStringWithFormat ("unrecognized variable name '%s'", var_name.AsCString()); 1526 return false; 1527 } 1528 return true; 1529 } 1530 1531 const ConstString 1532 ThreadInstanceSettings::CreateInstanceName () 1533 { 1534 static int instance_count = 1; 1535 StreamString sstr; 1536 1537 sstr.Printf ("thread_%d", instance_count); 1538 ++instance_count; 1539 1540 const ConstString ret_val (sstr.GetData()); 1541 return ret_val; 1542 } 1543 1544 const ConstString & 1545 ThreadInstanceSettings::StepAvoidRegexpVarName () 1546 { 1547 static ConstString step_avoid_var_name ("step-avoid-regexp"); 1548 1549 return step_avoid_var_name; 1550 } 1551 1552 const ConstString & 1553 ThreadInstanceSettings::GetTraceThreadVarName () 1554 { 1555 static ConstString trace_thread_var_name ("trace-thread"); 1556 1557 return trace_thread_var_name; 1558 } 1559 1560 //-------------------------------------------------- 1561 // SettingsController Variable Tables 1562 //-------------------------------------------------- 1563 1564 SettingEntry 1565 Thread::SettingsController::global_settings_table[] = 1566 { 1567 //{ "var-name", var-type , "default", enum-table, init'd, hidden, "help-text"}, 1568 { NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL } 1569 }; 1570 1571 1572 SettingEntry 1573 Thread::SettingsController::instance_settings_table[] = 1574 { 1575 //{ "var-name", var-type, "default", enum-table, init'd, hidden, "help-text"}, 1576 { "step-avoid-regexp", eSetVarTypeString, "", NULL, false, false, "A regular expression defining functions step-in won't stop in." }, 1577 { "trace-thread", eSetVarTypeBoolean, "false", NULL, false, false, "If true, this thread will single-step and log execution." }, 1578 { NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL } 1579 }; 1580