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