ProcessKDP.cpp revision 3acaa926c8f0d32da48db61a5fcb95276e6a4006
1//===-- ProcessKDP.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// C Includes 11#include <errno.h> 12#include <stdlib.h> 13 14// C++ Includes 15// Other libraries and framework includes 16#include "lldb/Core/ConnectionFileDescriptor.h" 17#include "lldb/Core/Debugger.h" 18#include "lldb/Core/PluginManager.h" 19#include "lldb/Core/Module.h" 20#include "lldb/Core/State.h" 21#include "lldb/Host/Host.h" 22#include "lldb/Symbol/ObjectFile.h" 23#include "lldb/Target/RegisterContext.h" 24#include "lldb/Target/Target.h" 25#include "lldb/Target/Thread.h" 26 27// Project includes 28#include "ProcessKDP.h" 29#include "ProcessKDPLog.h" 30#include "ThreadKDP.h" 31 32using namespace lldb; 33using namespace lldb_private; 34 35const char * 36ProcessKDP::GetPluginNameStatic() 37{ 38 return "kdp-remote"; 39} 40 41const char * 42ProcessKDP::GetPluginDescriptionStatic() 43{ 44 return "KDP Remote protocol based debugging plug-in for darwin kernel debugging."; 45} 46 47void 48ProcessKDP::Terminate() 49{ 50 PluginManager::UnregisterPlugin (ProcessKDP::CreateInstance); 51} 52 53 54lldb::ProcessSP 55ProcessKDP::CreateInstance (Target &target, 56 Listener &listener, 57 const FileSpec *crash_file_path) 58{ 59 lldb::ProcessSP process_sp; 60 if (crash_file_path == NULL) 61 process_sp.reset(new ProcessKDP (target, listener)); 62 return process_sp; 63} 64 65bool 66ProcessKDP::CanDebug(Target &target, bool plugin_specified_by_name) 67{ 68 if (plugin_specified_by_name) 69 return true; 70 71 // For now we are just making sure the file exists for a given module 72 Module *exe_module = target.GetExecutableModulePointer(); 73 if (exe_module) 74 { 75 const llvm::Triple &triple_ref = target.GetArchitecture().GetTriple(); 76 switch (triple_ref.getOS()) 77 { 78 case llvm::Triple::Darwin: // Should use "macosx" for desktop and "ios" for iOS, but accept darwin just in case 79 case llvm::Triple::MacOSX: // For desktop targets 80 case llvm::Triple::IOS: // For arm targets 81 if (triple_ref.getVendor() == llvm::Triple::Apple) 82 { 83 ObjectFile *exe_objfile = exe_module->GetObjectFile(); 84 if (exe_objfile->GetType() == ObjectFile::eTypeExecutable && 85 exe_objfile->GetStrata() == ObjectFile::eStrataKernel) 86 return true; 87 } 88 break; 89 90 default: 91 break; 92 } 93 } 94 return false; 95} 96 97//---------------------------------------------------------------------- 98// ProcessKDP constructor 99//---------------------------------------------------------------------- 100ProcessKDP::ProcessKDP(Target& target, Listener &listener) : 101 Process (target, listener), 102 m_comm("lldb.process.kdp-remote.communication"), 103 m_async_broadcaster (NULL, "lldb.process.kdp-remote.async-broadcaster"), 104 m_async_thread (LLDB_INVALID_HOST_THREAD), 105 m_destroy_in_process (false) 106{ 107 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit"); 108 m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue"); 109} 110 111//---------------------------------------------------------------------- 112// Destructor 113//---------------------------------------------------------------------- 114ProcessKDP::~ProcessKDP() 115{ 116 Clear(); 117 // We need to call finalize on the process before destroying ourselves 118 // to make sure all of the broadcaster cleanup goes as planned. If we 119 // destruct this class, then Process::~Process() might have problems 120 // trying to fully destroy the broadcaster. 121 Finalize(); 122} 123 124//---------------------------------------------------------------------- 125// PluginInterface 126//---------------------------------------------------------------------- 127const char * 128ProcessKDP::GetPluginName() 129{ 130 return "Process debugging plug-in that uses the Darwin KDP remote protocol"; 131} 132 133const char * 134ProcessKDP::GetShortPluginName() 135{ 136 return GetPluginNameStatic(); 137} 138 139uint32_t 140ProcessKDP::GetPluginVersion() 141{ 142 return 1; 143} 144 145Error 146ProcessKDP::WillLaunch (Module* module) 147{ 148 Error error; 149 error.SetErrorString ("launching not supported in kdp-remote plug-in"); 150 return error; 151} 152 153Error 154ProcessKDP::WillAttachToProcessWithID (lldb::pid_t pid) 155{ 156 Error error; 157 error.SetErrorString ("attaching to a by process ID not supported in kdp-remote plug-in"); 158 return error; 159} 160 161Error 162ProcessKDP::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch) 163{ 164 Error error; 165 error.SetErrorString ("attaching to a by process name not supported in kdp-remote plug-in"); 166 return error; 167} 168 169Error 170ProcessKDP::DoConnectRemote (const char *remote_url) 171{ 172 Error error; 173 174 // Don't let any JIT happen when doing KDP as we can't allocate 175 // memory and we don't want to be mucking with threads that might 176 // already be handling exceptions 177 SetCanJIT(false); 178 179 if (remote_url == NULL || remote_url[0] == '\0') 180 { 181 error.SetErrorStringWithFormat ("invalid connection URL '%s'", remote_url); 182 return error; 183 } 184 185 std::auto_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor()); 186 if (conn_ap.get()) 187 { 188 // Only try once for now. 189 // TODO: check if we should be retrying? 190 const uint32_t max_retry_count = 1; 191 for (uint32_t retry_count = 0; retry_count < max_retry_count; ++retry_count) 192 { 193 if (conn_ap->Connect(remote_url, &error) == eConnectionStatusSuccess) 194 break; 195 usleep (100000); 196 } 197 } 198 199 if (conn_ap->IsConnected()) 200 { 201 const uint16_t reply_port = conn_ap->GetReadPort (); 202 203 if (reply_port != 0) 204 { 205 m_comm.SetConnection(conn_ap.release()); 206 207 if (m_comm.SendRequestReattach(reply_port)) 208 { 209 if (m_comm.SendRequestConnect(reply_port, reply_port, "Greetings from LLDB...")) 210 { 211 m_comm.GetVersion(); 212 uint32_t cpu = m_comm.GetCPUType(); 213 uint32_t sub = m_comm.GetCPUSubtype(); 214 ArchSpec kernel_arch; 215 kernel_arch.SetArchitecture(eArchTypeMachO, cpu, sub); 216 m_target.SetArchitecture(kernel_arch); 217 // Set the thread ID 218 UpdateThreadListIfNeeded (); 219 SetID (1); 220 GetThreadList (); 221 SetPrivateState (eStateStopped); 222 StreamSP async_strm_sp(m_target.GetDebugger().GetAsyncOutputStream()); 223 if (async_strm_sp) 224 { 225 const char *cstr; 226 if ((cstr = m_comm.GetKernelVersion ()) != NULL) 227 { 228 async_strm_sp->Printf ("Version: %s\n", cstr); 229 async_strm_sp->Flush(); 230 } 231// if ((cstr = m_comm.GetImagePath ()) != NULL) 232// { 233// async_strm_sp->Printf ("Image Path: %s\n", cstr); 234// async_strm_sp->Flush(); 235// } 236 } 237 } 238 else 239 { 240 puts ("KDP_CONNECT failed"); // REMOVE THIS 241 error.SetErrorString("KDP_REATTACH failed"); 242 } 243 } 244 else 245 { 246 puts ("KDP_REATTACH failed"); // REMOVE THIS 247 error.SetErrorString("KDP_REATTACH failed"); 248 } 249 } 250 else 251 { 252 error.SetErrorString("invalid reply port from UDP connection"); 253 } 254 } 255 else 256 { 257 if (error.Success()) 258 error.SetErrorStringWithFormat ("failed to connect to '%s'", remote_url); 259 } 260 if (error.Fail()) 261 m_comm.Disconnect(); 262 263 return error; 264} 265 266//---------------------------------------------------------------------- 267// Process Control 268//---------------------------------------------------------------------- 269Error 270ProcessKDP::DoLaunch (Module *exe_module, 271 const ProcessLaunchInfo &launch_info) 272{ 273 Error error; 274 error.SetErrorString ("launching not supported in kdp-remote plug-in"); 275 return error; 276} 277 278 279Error 280ProcessKDP::DoAttachToProcessWithID (lldb::pid_t attach_pid) 281{ 282 Error error; 283 error.SetErrorString ("attach to process by ID is not suppported in kdp remote debugging"); 284 return error; 285} 286 287Error 288ProcessKDP::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) 289{ 290 Error error; 291 error.SetErrorString ("attach to process by ID is not suppported in kdp remote debugging"); 292 return error; 293} 294 295Error 296ProcessKDP::DoAttachToProcessWithName (const char *process_name, bool wait_for_launch, const ProcessAttachInfo &attach_info) 297{ 298 Error error; 299 error.SetErrorString ("attach to process by name is not suppported in kdp remote debugging"); 300 return error; 301} 302 303 304void 305ProcessKDP::DidAttach () 306{ 307 LogSP log (ProcessKDPLog::GetLogIfAllCategoriesSet (KDP_LOG_PROCESS)); 308 if (log) 309 log->Printf ("ProcessKDP::DidAttach()"); 310 if (GetID() != LLDB_INVALID_PROCESS_ID) 311 { 312 // TODO: figure out the register context that we will use 313 } 314} 315 316Error 317ProcessKDP::WillResume () 318{ 319 return Error(); 320} 321 322Error 323ProcessKDP::DoResume () 324{ 325 Error error; 326 LogSP log (ProcessKDPLog::GetLogIfAllCategoriesSet (KDP_LOG_PROCESS)); 327 // Only start the async thread if we try to do any process control 328 if (!IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 329 StartAsyncThread (); 330 331 bool resume = false; 332 333 // With KDP there is only one thread we can tell what to do 334 ThreadSP kernel_thread_sp (GetKernelThread(m_thread_list, m_thread_list)); 335 if (kernel_thread_sp) 336 { 337 const StateType thread_resume_state = kernel_thread_sp->GetTemporaryResumeState(); 338 switch (thread_resume_state) 339 { 340 case eStateSuspended: 341 // Nothing to do here when a thread will stay suspended 342 // we just leave the CPU mask bit set to zero for the thread 343 puts("REMOVE THIS: ProcessKDP::DoResume () -- thread suspended"); 344 break; 345 346 case eStateStepping: 347 puts("REMOVE THIS: ProcessKDP::DoResume () -- thread stepping"); 348 kernel_thread_sp->GetRegisterContext()->HardwareSingleStep (true); 349 resume = true; 350 break; 351 352 case eStateRunning: 353 puts("REMOVE THIS: ProcessKDP::DoResume () -- thread running"); 354 kernel_thread_sp->GetRegisterContext()->HardwareSingleStep (false); 355 resume = true; 356 break; 357 358 default: 359 // The only valid thread resume states are listed above 360 assert (!"invalid thread resume state"); 361 break; 362 } 363 } 364 365 if (resume) 366 { 367 if (log) 368 log->Printf ("ProcessKDP::DoResume () sending resume"); 369 370 if (m_comm.SendRequestResume ()) 371 { 372 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue); 373 SetPrivateState(eStateRunning); 374 } 375 else 376 error.SetErrorString ("KDP resume failed"); 377 } 378 else 379 { 380 error.SetErrorString ("kernel thread is suspended"); 381 } 382 383 return error; 384} 385 386lldb::ThreadSP 387ProcessKDP::GetKernelThread(ThreadList &old_thread_list, ThreadList &new_thread_list) 388{ 389 // KDP only tells us about one thread/core. Any other threads will usually 390 // be the ones that are read from memory by the OS plug-ins. 391 const lldb::tid_t kernel_tid = 1; 392 ThreadSP thread_sp (old_thread_list.FindThreadByID (kernel_tid, false)); 393 if (!thread_sp) 394 { 395 thread_sp.reset(new ThreadKDP (shared_from_this(), kernel_tid)); 396 new_thread_list.AddThread(thread_sp); 397 } 398 return thread_sp; 399} 400 401 402 403 404bool 405ProcessKDP::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list) 406{ 407 // locker will keep a mutex locked until it goes out of scope 408 LogSP log (ProcessKDPLog::GetLogIfAllCategoriesSet (KDP_LOG_THREAD)); 409 if (log && log->GetMask().Test(KDP_LOG_VERBOSE)) 410 log->Printf ("ProcessKDP::%s (pid = %llu)", __FUNCTION__, GetID()); 411 412 // Even though there is a CPU mask, it doesn't mean to can see each CPU 413 // indivudually, there is really only one. Lets call this thread 1. 414 GetKernelThread (old_thread_list, new_thread_list); 415 416 return new_thread_list.GetSize(false) > 0; 417} 418 419void 420ProcessKDP::RefreshStateAfterStop () 421{ 422 // Let all threads recover from stopping and do any clean up based 423 // on the previous thread state (if any). 424 m_thread_list.RefreshStateAfterStop(); 425} 426 427Error 428ProcessKDP::DoHalt (bool &caused_stop) 429{ 430 Error error; 431 432 if (m_comm.IsRunning()) 433 { 434 if (m_destroy_in_process) 435 { 436 // If we are attemping to destroy, we need to not return an error to 437 // Halt or DoDestroy won't get called. 438 // We are also currently running, so send a process stopped event 439 SetPrivateState (eStateStopped); 440 } 441 else 442 { 443 error.SetErrorString ("KDP cannot interrupt a running kernel"); 444 } 445 } 446 return error; 447} 448 449Error 450ProcessKDP::DoDetach() 451{ 452 Error error; 453 LogSP log (ProcessKDPLog::GetLogIfAllCategoriesSet(KDP_LOG_PROCESS)); 454 if (log) 455 log->Printf ("ProcessKDP::DoDetach()"); 456 457 if (m_comm.IsRunning()) 458 { 459 // We are running and we can't interrupt a running kernel, so we need 460 // to just close the connection to the kernel and hope for the best 461 } 462 else 463 { 464 DisableAllBreakpointSites (); 465 466 m_thread_list.DiscardThreadPlans(); 467 468 if (m_comm.IsConnected()) 469 { 470 471 m_comm.SendRequestDisconnect(); 472 473 size_t response_size = m_comm.Disconnect (); 474 if (log) 475 { 476 if (response_size) 477 log->PutCString ("ProcessKDP::DoDetach() detach packet sent successfully"); 478 else 479 log->PutCString ("ProcessKDP::DoDetach() detach packet send failed"); 480 } 481 } 482 } 483 StopAsyncThread (); 484 m_comm.Clear(); 485 486 SetPrivateState (eStateDetached); 487 ResumePrivateStateThread(); 488 489 //KillDebugserverProcess (); 490 return error; 491} 492 493Error 494ProcessKDP::WillDestroy () 495{ 496 Error error; 497 m_destroy_in_process = true; 498 return error; 499} 500 501Error 502ProcessKDP::DoDestroy () 503{ 504 // For KDP there really is no difference between destroy and detach 505 return DoDetach(); 506} 507 508//------------------------------------------------------------------ 509// Process Queries 510//------------------------------------------------------------------ 511 512bool 513ProcessKDP::IsAlive () 514{ 515 return m_comm.IsConnected() && m_private_state.GetValue() != eStateExited; 516} 517 518//------------------------------------------------------------------ 519// Process Memory 520//------------------------------------------------------------------ 521size_t 522ProcessKDP::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error) 523{ 524 if (m_comm.IsConnected()) 525 return m_comm.SendRequestReadMemory (addr, buf, size, error); 526 error.SetErrorString ("not connected"); 527 return 0; 528} 529 530size_t 531ProcessKDP::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 532{ 533 if (m_comm.IsConnected()) 534 return m_comm.SendRequestWriteMemory (addr, buf, size, error); 535 error.SetErrorString ("not connected"); 536 return 0; 537} 538 539lldb::addr_t 540ProcessKDP::DoAllocateMemory (size_t size, uint32_t permissions, Error &error) 541{ 542 error.SetErrorString ("memory allocation not suppported in kdp remote debugging"); 543 return LLDB_INVALID_ADDRESS; 544} 545 546Error 547ProcessKDP::DoDeallocateMemory (lldb::addr_t addr) 548{ 549 Error error; 550 error.SetErrorString ("memory deallocation not suppported in kdp remote debugging"); 551 return error; 552} 553 554Error 555ProcessKDP::EnableBreakpoint (BreakpointSite *bp_site) 556{ 557 if (m_comm.LocalBreakpointsAreSupported ()) 558 { 559 Error error; 560 if (!bp_site->IsEnabled()) 561 { 562 if (m_comm.SendRequestBreakpoint(true, bp_site->GetLoadAddress())) 563 { 564 bp_site->SetEnabled(true); 565 bp_site->SetType (BreakpointSite::eExternal); 566 } 567 else 568 { 569 error.SetErrorString ("KDP set breakpoint failed"); 570 } 571 } 572 return error; 573 } 574 return EnableSoftwareBreakpoint (bp_site); 575} 576 577Error 578ProcessKDP::DisableBreakpoint (BreakpointSite *bp_site) 579{ 580 if (m_comm.LocalBreakpointsAreSupported ()) 581 { 582 Error error; 583 if (bp_site->IsEnabled()) 584 { 585 BreakpointSite::Type bp_type = bp_site->GetType(); 586 if (bp_type == BreakpointSite::eExternal) 587 { 588 if (m_destroy_in_process && m_comm.IsRunning()) 589 { 590 // We are trying to destroy our connection and we are running 591 bp_site->SetEnabled(false); 592 } 593 else 594 { 595 if (m_comm.SendRequestBreakpoint(false, bp_site->GetLoadAddress())) 596 bp_site->SetEnabled(false); 597 else 598 error.SetErrorString ("KDP remove breakpoint failed"); 599 } 600 } 601 else 602 { 603 error = DisableSoftwareBreakpoint (bp_site); 604 } 605 } 606 return error; 607 } 608 return DisableSoftwareBreakpoint (bp_site); 609} 610 611Error 612ProcessKDP::EnableWatchpoint (Watchpoint *wp) 613{ 614 Error error; 615 error.SetErrorString ("watchpoints are not suppported in kdp remote debugging"); 616 return error; 617} 618 619Error 620ProcessKDP::DisableWatchpoint (Watchpoint *wp) 621{ 622 Error error; 623 error.SetErrorString ("watchpoints are not suppported in kdp remote debugging"); 624 return error; 625} 626 627void 628ProcessKDP::Clear() 629{ 630 m_thread_list.Clear(); 631} 632 633Error 634ProcessKDP::DoSignal (int signo) 635{ 636 Error error; 637 error.SetErrorString ("sending signals is not suppported in kdp remote debugging"); 638 return error; 639} 640 641void 642ProcessKDP::Initialize() 643{ 644 static bool g_initialized = false; 645 646 if (g_initialized == false) 647 { 648 g_initialized = true; 649 PluginManager::RegisterPlugin (GetPluginNameStatic(), 650 GetPluginDescriptionStatic(), 651 CreateInstance); 652 653 Log::Callbacks log_callbacks = { 654 ProcessKDPLog::DisableLog, 655 ProcessKDPLog::EnableLog, 656 ProcessKDPLog::ListLogCategories 657 }; 658 659 Log::RegisterLogChannel (ProcessKDP::GetPluginNameStatic(), log_callbacks); 660 } 661} 662 663bool 664ProcessKDP::StartAsyncThread () 665{ 666 LogSP log (ProcessKDPLog::GetLogIfAllCategoriesSet(KDP_LOG_PROCESS)); 667 668 if (log) 669 log->Printf ("ProcessKDP::StartAsyncThread ()"); 670 671 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 672 return true; 673 674 m_async_thread = Host::ThreadCreate ("<lldb.process.kdp-remote.async>", ProcessKDP::AsyncThread, this, NULL); 675 return IS_VALID_LLDB_HOST_THREAD(m_async_thread); 676} 677 678void 679ProcessKDP::StopAsyncThread () 680{ 681 LogSP log (ProcessKDPLog::GetLogIfAllCategoriesSet(KDP_LOG_PROCESS)); 682 683 if (log) 684 log->Printf ("ProcessKDP::StopAsyncThread ()"); 685 686 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit); 687 688 // Stop the stdio thread 689 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 690 { 691 Host::ThreadJoin (m_async_thread, NULL, NULL); 692 m_async_thread = LLDB_INVALID_HOST_THREAD; 693 } 694} 695 696 697void * 698ProcessKDP::AsyncThread (void *arg) 699{ 700 ProcessKDP *process = (ProcessKDP*) arg; 701 702 const lldb::pid_t pid = process->GetID(); 703 704 LogSP log (ProcessKDPLog::GetLogIfAllCategoriesSet (KDP_LOG_PROCESS)); 705 if (log) 706 log->Printf ("ProcessKDP::AsyncThread (arg = %p, pid = %llu) thread starting...", arg, pid); 707 708 Listener listener ("ProcessKDP::AsyncThread"); 709 EventSP event_sp; 710 const uint32_t desired_event_mask = eBroadcastBitAsyncContinue | 711 eBroadcastBitAsyncThreadShouldExit; 712 713 714 if (listener.StartListeningForEvents (&process->m_async_broadcaster, desired_event_mask) == desired_event_mask) 715 { 716 bool done = false; 717 while (!done) 718 { 719 if (log) 720 log->Printf ("ProcessKDP::AsyncThread (pid = %llu) listener.WaitForEvent (NULL, event_sp)...", 721 pid); 722 if (listener.WaitForEvent (NULL, event_sp)) 723 { 724 uint32_t event_type = event_sp->GetType(); 725 if (log) 726 log->Printf ("ProcessKDP::AsyncThread (pid = %llu) Got an event of type: %d...", 727 pid, 728 event_type); 729 730 // When we are running, poll for 1 second to try and get an exception 731 // to indicate the process has stopped. If we don't get one, check to 732 // make sure no one asked us to exit 733 bool is_running = false; 734 DataExtractor exc_reply_packet; 735 do 736 { 737 switch (event_type) 738 { 739 case eBroadcastBitAsyncContinue: 740 { 741 is_running = true; 742 if (process->m_comm.WaitForPacketWithTimeoutMicroSeconds (exc_reply_packet, 1 * USEC_PER_SEC)) 743 { 744 ThreadSP thread_sp (process->GetKernelThread(process->GetThreadList(), process->GetThreadList())); 745 thread_sp->GetRegisterContext()->InvalidateAllRegisters(); 746 static_cast<ThreadKDP *>(thread_sp.get())->SetStopInfoFrom_KDP_EXCEPTION (exc_reply_packet); 747 748 // TODO: parse the stop reply packet 749 is_running = false; 750 process->SetPrivateState(eStateStopped); 751 } 752 else 753 { 754 // Check to see if we are supposed to exit. There is no way to 755 // interrupt a running kernel, so all we can do is wait for an 756 // exception or detach... 757 if (listener.GetNextEvent(event_sp)) 758 { 759 // We got an event, go through the loop again 760 event_type = event_sp->GetType(); 761 } 762 } 763 } 764 break; 765 766 case eBroadcastBitAsyncThreadShouldExit: 767 if (log) 768 log->Printf ("ProcessKDP::AsyncThread (pid = %llu) got eBroadcastBitAsyncThreadShouldExit...", 769 pid); 770 done = true; 771 is_running = false; 772 break; 773 774 default: 775 if (log) 776 log->Printf ("ProcessKDP::AsyncThread (pid = %llu) got unknown event 0x%8.8x", 777 pid, 778 event_type); 779 done = true; 780 is_running = false; 781 break; 782 } 783 } while (is_running); 784 } 785 else 786 { 787 if (log) 788 log->Printf ("ProcessKDP::AsyncThread (pid = %llu) listener.WaitForEvent (NULL, event_sp) => false", 789 pid); 790 done = true; 791 } 792 } 793 } 794 795 if (log) 796 log->Printf ("ProcessKDP::AsyncThread (arg = %p, pid = %llu) thread exiting...", 797 arg, 798 pid); 799 800 process->m_async_thread = LLDB_INVALID_HOST_THREAD; 801 return NULL; 802} 803 804 805