1 //===-- Process.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/Target/Process.h" 11 12 #include "lldb/lldb-private-log.h" 13 14 #include "lldb/Breakpoint/StoppointCallbackContext.h" 15 #include "lldb/Breakpoint/BreakpointLocation.h" 16 #include "lldb/Core/Event.h" 17 #include "lldb/Core/ConnectionFileDescriptor.h" 18 #include "lldb/Core/Debugger.h" 19 #include "lldb/Core/InputReader.h" 20 #include "lldb/Core/Log.h" 21 #include "lldb/Core/PluginManager.h" 22 #include "lldb/Core/State.h" 23 #include "lldb/Expression/ClangUserExpression.h" 24 #include "lldb/Interpreter/CommandInterpreter.h" 25 #include "lldb/Host/Host.h" 26 #include "lldb/Target/ABI.h" 27 #include "lldb/Target/DynamicLoader.h" 28 #include "lldb/Target/OperatingSystem.h" 29 #include "lldb/Target/LanguageRuntime.h" 30 #include "lldb/Target/CPPLanguageRuntime.h" 31 #include "lldb/Target/ObjCLanguageRuntime.h" 32 #include "lldb/Target/Platform.h" 33 #include "lldb/Target/RegisterContext.h" 34 #include "lldb/Target/StopInfo.h" 35 #include "lldb/Target/Target.h" 36 #include "lldb/Target/TargetList.h" 37 #include "lldb/Target/Thread.h" 38 #include "lldb/Target/ThreadPlan.h" 39 40 using namespace lldb; 41 using namespace lldb_private; 42 43 void 44 ProcessInstanceInfo::Dump (Stream &s, Platform *platform) const 45 { 46 const char *cstr; 47 if (m_pid != LLDB_INVALID_PROCESS_ID) 48 s.Printf (" pid = %i\n", m_pid); 49 50 if (m_parent_pid != LLDB_INVALID_PROCESS_ID) 51 s.Printf (" parent = %i\n", m_parent_pid); 52 53 if (m_executable) 54 { 55 s.Printf (" name = %s\n", m_executable.GetFilename().GetCString()); 56 s.PutCString (" file = "); 57 m_executable.Dump(&s); 58 s.EOL(); 59 } 60 const uint32_t argc = m_arguments.GetArgumentCount(); 61 if (argc > 0) 62 { 63 for (uint32_t i=0; i<argc; i++) 64 { 65 const char *arg = m_arguments.GetArgumentAtIndex(i); 66 if (i < 10) 67 s.Printf (" arg[%u] = %s\n", i, arg); 68 else 69 s.Printf ("arg[%u] = %s\n", i, arg); 70 } 71 } 72 73 const uint32_t envc = m_environment.GetArgumentCount(); 74 if (envc > 0) 75 { 76 for (uint32_t i=0; i<envc; i++) 77 { 78 const char *env = m_environment.GetArgumentAtIndex(i); 79 if (i < 10) 80 s.Printf (" env[%u] = %s\n", i, env); 81 else 82 s.Printf ("env[%u] = %s\n", i, env); 83 } 84 } 85 86 if (m_arch.IsValid()) 87 s.Printf (" arch = %s\n", m_arch.GetTriple().str().c_str()); 88 89 if (m_uid != UINT32_MAX) 90 { 91 cstr = platform->GetUserName (m_uid); 92 s.Printf (" uid = %-5u (%s)\n", m_uid, cstr ? cstr : ""); 93 } 94 if (m_gid != UINT32_MAX) 95 { 96 cstr = platform->GetGroupName (m_gid); 97 s.Printf (" gid = %-5u (%s)\n", m_gid, cstr ? cstr : ""); 98 } 99 if (m_euid != UINT32_MAX) 100 { 101 cstr = platform->GetUserName (m_euid); 102 s.Printf (" euid = %-5u (%s)\n", m_euid, cstr ? cstr : ""); 103 } 104 if (m_egid != UINT32_MAX) 105 { 106 cstr = platform->GetGroupName (m_egid); 107 s.Printf (" egid = %-5u (%s)\n", m_egid, cstr ? cstr : ""); 108 } 109 } 110 111 void 112 ProcessInstanceInfo::DumpTableHeader (Stream &s, Platform *platform, bool show_args, bool verbose) 113 { 114 const char *label; 115 if (show_args || verbose) 116 label = "ARGUMENTS"; 117 else 118 label = "NAME"; 119 120 if (verbose) 121 { 122 s.Printf ("PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE %s\n", label); 123 s.PutCString ("====== ====== ========== ========== ========== ========== ======================== ============================\n"); 124 } 125 else 126 { 127 s.Printf ("PID PARENT USER ARCH %s\n", label); 128 s.PutCString ("====== ====== ========== ======= ============================\n"); 129 } 130 } 131 132 void 133 ProcessInstanceInfo::DumpAsTableRow (Stream &s, Platform *platform, bool show_args, bool verbose) const 134 { 135 if (m_pid != LLDB_INVALID_PROCESS_ID) 136 { 137 const char *cstr; 138 s.Printf ("%-6u %-6u ", m_pid, m_parent_pid); 139 140 141 if (verbose) 142 { 143 cstr = platform->GetUserName (m_uid); 144 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 145 s.Printf ("%-10s ", cstr); 146 else 147 s.Printf ("%-10u ", m_uid); 148 149 cstr = platform->GetGroupName (m_gid); 150 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 151 s.Printf ("%-10s ", cstr); 152 else 153 s.Printf ("%-10u ", m_gid); 154 155 cstr = platform->GetUserName (m_euid); 156 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 157 s.Printf ("%-10s ", cstr); 158 else 159 s.Printf ("%-10u ", m_euid); 160 161 cstr = platform->GetGroupName (m_egid); 162 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 163 s.Printf ("%-10s ", cstr); 164 else 165 s.Printf ("%-10u ", m_egid); 166 s.Printf ("%-24s ", m_arch.IsValid() ? m_arch.GetTriple().str().c_str() : ""); 167 } 168 else 169 { 170 s.Printf ("%-10s %-7d %s ", 171 platform->GetUserName (m_euid), 172 (int)m_arch.GetTriple().getArchName().size(), 173 m_arch.GetTriple().getArchName().data()); 174 } 175 176 if (verbose || show_args) 177 { 178 const uint32_t argc = m_arguments.GetArgumentCount(); 179 if (argc > 0) 180 { 181 for (uint32_t i=0; i<argc; i++) 182 { 183 if (i > 0) 184 s.PutChar (' '); 185 s.PutCString (m_arguments.GetArgumentAtIndex(i)); 186 } 187 } 188 } 189 else 190 { 191 s.PutCString (GetName()); 192 } 193 194 s.EOL(); 195 } 196 } 197 198 199 void 200 ProcessInfo::SetArguments (char const **argv, 201 bool first_arg_is_executable, 202 bool first_arg_is_executable_and_argument) 203 { 204 m_arguments.SetArguments (argv); 205 206 // Is the first argument the executable? 207 if (first_arg_is_executable) 208 { 209 const char *first_arg = m_arguments.GetArgumentAtIndex (0); 210 if (first_arg) 211 { 212 // Yes the first argument is an executable, set it as the executable 213 // in the launch options. Don't resolve the file path as the path 214 // could be a remote platform path 215 const bool resolve = false; 216 m_executable.SetFile(first_arg, resolve); 217 218 // If argument zero is an executable and shouldn't be included 219 // in the arguments, remove it from the front of the arguments 220 if (first_arg_is_executable_and_argument == false) 221 m_arguments.DeleteArgumentAtIndex (0); 222 } 223 } 224 } 225 void 226 ProcessInfo::SetArguments (const Args& args, 227 bool first_arg_is_executable, 228 bool first_arg_is_executable_and_argument) 229 { 230 // Copy all arguments 231 m_arguments = args; 232 233 // Is the first argument the executable? 234 if (first_arg_is_executable) 235 { 236 const char *first_arg = m_arguments.GetArgumentAtIndex (0); 237 if (first_arg) 238 { 239 // Yes the first argument is an executable, set it as the executable 240 // in the launch options. Don't resolve the file path as the path 241 // could be a remote platform path 242 const bool resolve = false; 243 m_executable.SetFile(first_arg, resolve); 244 245 // If argument zero is an executable and shouldn't be included 246 // in the arguments, remove it from the front of the arguments 247 if (first_arg_is_executable_and_argument == false) 248 m_arguments.DeleteArgumentAtIndex (0); 249 } 250 } 251 } 252 253 void 254 ProcessLaunchInfo::FinalizeFileActions (Target *target, bool default_to_use_pty) 255 { 256 // If notthing was specified, then check the process for any default 257 // settings that were set with "settings set" 258 if (m_file_actions.empty()) 259 { 260 if (m_flags.Test(eLaunchFlagDisableSTDIO)) 261 { 262 AppendSuppressFileAction (STDERR_FILENO, true , true ); 263 AppendSuppressFileAction (STDIN_FILENO , true , false); 264 AppendSuppressFileAction (STDOUT_FILENO, false, true ); 265 } 266 else 267 { 268 // Check for any values that might have gotten set with any of: 269 // (lldb) settings set target.input-path 270 // (lldb) settings set target.output-path 271 // (lldb) settings set target.error-path 272 const char *in_path = NULL; 273 const char *out_path = NULL; 274 const char *err_path = NULL; 275 if (target) 276 { 277 in_path = target->GetStandardErrorPath(); 278 out_path = target->GetStandardInputPath(); 279 err_path = target->GetStandardOutputPath(); 280 } 281 282 if (default_to_use_pty && (!in_path && !out_path && !err_path)) 283 { 284 if (m_pty.OpenFirstAvailableMaster (O_RDWR|O_NOCTTY, NULL, 0)) 285 { 286 in_path = out_path = err_path = m_pty.GetSlaveName (NULL, 0); 287 } 288 } 289 290 if (in_path) 291 AppendOpenFileAction(STDERR_FILENO, in_path, true, true); 292 293 if (out_path) 294 AppendOpenFileAction(STDIN_FILENO, out_path, true, false); 295 296 if (err_path) 297 AppendOpenFileAction(STDOUT_FILENO, err_path, false, true); 298 } 299 } 300 } 301 302 303 bool 304 ProcessLaunchInfo::ConvertArgumentsForLaunchingInShell (Error &error, bool localhost) 305 { 306 error.Clear(); 307 308 if (GetFlags().Test (eLaunchFlagLaunchInShell)) 309 { 310 const char *shell_executable = GetShell(); 311 if (shell_executable) 312 { 313 char shell_resolved_path[PATH_MAX]; 314 315 if (localhost) 316 { 317 FileSpec shell_filespec (shell_executable, true); 318 319 if (!shell_filespec.Exists()) 320 { 321 // Resolve the path in case we just got "bash", "sh" or "tcsh" 322 if (!shell_filespec.ResolveExecutableLocation ()) 323 { 324 error.SetErrorStringWithFormat("invalid shell path '%s'", shell_executable); 325 return false; 326 } 327 } 328 shell_filespec.GetPath (shell_resolved_path, sizeof(shell_resolved_path)); 329 shell_executable = shell_resolved_path; 330 } 331 332 Args shell_arguments; 333 std::string safe_arg; 334 shell_arguments.AppendArgument (shell_executable); 335 StreamString shell_command; 336 shell_arguments.AppendArgument ("-c"); 337 shell_command.PutCString ("exec"); 338 if (GetArchitecture().IsValid()) 339 { 340 shell_command.Printf(" /usr/bin/arch -arch %s", GetArchitecture().GetArchitectureName()); 341 // Set the resume count to 2: 342 // 1 - stop in shell 343 // 2 - stop in /usr/bin/arch 344 // 3 - then we will stop in our program 345 SetResumeCount(2); 346 } 347 else 348 { 349 // Set the resume count to 1: 350 // 1 - stop in shell 351 // 2 - then we will stop in our program 352 SetResumeCount(1); 353 } 354 355 const char **argv = GetArguments().GetConstArgumentVector (); 356 if (argv) 357 { 358 for (size_t i=0; argv[i] != NULL; ++i) 359 { 360 const char *arg = Args::GetShellSafeArgument (argv[i], safe_arg); 361 shell_command.Printf(" %s", arg); 362 } 363 } 364 shell_arguments.AppendArgument (shell_command.GetString().c_str()); 365 366 m_executable.SetFile(shell_executable, false); 367 m_arguments = shell_arguments; 368 return true; 369 } 370 else 371 { 372 error.SetErrorString ("invalid shell path"); 373 } 374 } 375 else 376 { 377 error.SetErrorString ("not launching in shell"); 378 } 379 return false; 380 } 381 382 383 bool 384 ProcessLaunchInfo::FileAction::Open (int fd, const char *path, bool read, bool write) 385 { 386 if ((read || write) && fd >= 0 && path && path[0]) 387 { 388 m_action = eFileActionOpen; 389 m_fd = fd; 390 if (read && write) 391 m_arg = O_NOCTTY | O_CREAT | O_RDWR; 392 else if (read) 393 m_arg = O_NOCTTY | O_RDONLY; 394 else 395 m_arg = O_NOCTTY | O_CREAT | O_WRONLY; 396 m_path.assign (path); 397 return true; 398 } 399 else 400 { 401 Clear(); 402 } 403 return false; 404 } 405 406 bool 407 ProcessLaunchInfo::FileAction::Close (int fd) 408 { 409 Clear(); 410 if (fd >= 0) 411 { 412 m_action = eFileActionClose; 413 m_fd = fd; 414 } 415 return m_fd >= 0; 416 } 417 418 419 bool 420 ProcessLaunchInfo::FileAction::Duplicate (int fd, int dup_fd) 421 { 422 Clear(); 423 if (fd >= 0 && dup_fd >= 0) 424 { 425 m_action = eFileActionDuplicate; 426 m_fd = fd; 427 m_arg = dup_fd; 428 } 429 return m_fd >= 0; 430 } 431 432 433 434 bool 435 ProcessLaunchInfo::FileAction::AddPosixSpawnFileAction (posix_spawn_file_actions_t *file_actions, 436 const FileAction *info, 437 Log *log, 438 Error& error) 439 { 440 if (info == NULL) 441 return false; 442 443 switch (info->m_action) 444 { 445 case eFileActionNone: 446 error.Clear(); 447 break; 448 449 case eFileActionClose: 450 if (info->m_fd == -1) 451 error.SetErrorString ("invalid fd for posix_spawn_file_actions_addclose(...)"); 452 else 453 { 454 error.SetError (::posix_spawn_file_actions_addclose (file_actions, info->m_fd), 455 eErrorTypePOSIX); 456 if (log && (error.Fail() || log)) 457 error.PutToLog(log, "posix_spawn_file_actions_addclose (action=%p, fd=%i)", 458 file_actions, info->m_fd); 459 } 460 break; 461 462 case eFileActionDuplicate: 463 if (info->m_fd == -1) 464 error.SetErrorString ("invalid fd for posix_spawn_file_actions_adddup2(...)"); 465 else if (info->m_arg == -1) 466 error.SetErrorString ("invalid duplicate fd for posix_spawn_file_actions_adddup2(...)"); 467 else 468 { 469 error.SetError (::posix_spawn_file_actions_adddup2 (file_actions, info->m_fd, info->m_arg), 470 eErrorTypePOSIX); 471 if (log && (error.Fail() || log)) 472 error.PutToLog(log, "posix_spawn_file_actions_adddup2 (action=%p, fd=%i, dup_fd=%i)", 473 file_actions, info->m_fd, info->m_arg); 474 } 475 break; 476 477 case eFileActionOpen: 478 if (info->m_fd == -1) 479 error.SetErrorString ("invalid fd in posix_spawn_file_actions_addopen(...)"); 480 else 481 { 482 int oflag = info->m_arg; 483 484 mode_t mode = 0; 485 486 if (oflag & O_CREAT) 487 mode = 0640; 488 489 error.SetError (::posix_spawn_file_actions_addopen (file_actions, 490 info->m_fd, 491 info->m_path.c_str(), 492 oflag, 493 mode), 494 eErrorTypePOSIX); 495 if (error.Fail() || log) 496 error.PutToLog(log, 497 "posix_spawn_file_actions_addopen (action=%p, fd=%i, path='%s', oflag=%i, mode=%i)", 498 file_actions, info->m_fd, info->m_path.c_str(), oflag, mode); 499 } 500 break; 501 502 default: 503 error.SetErrorStringWithFormat ("invalid file action: %i", info->m_action); 504 break; 505 } 506 return error.Success(); 507 } 508 509 Error 510 ProcessLaunchCommandOptions::SetOptionValue (uint32_t option_idx, const char *option_arg) 511 { 512 Error error; 513 char short_option = (char) m_getopt_table[option_idx].val; 514 515 switch (short_option) 516 { 517 case 's': // Stop at program entry point 518 launch_info.GetFlags().Set (eLaunchFlagStopAtEntry); 519 break; 520 521 case 'e': // STDERR for read + write 522 { 523 ProcessLaunchInfo::FileAction action; 524 if (action.Open(STDERR_FILENO, option_arg, true, true)) 525 launch_info.AppendFileAction (action); 526 } 527 break; 528 529 case 'i': // STDIN for read only 530 { 531 ProcessLaunchInfo::FileAction action; 532 if (action.Open(STDIN_FILENO, option_arg, true, false)) 533 launch_info.AppendFileAction (action); 534 } 535 break; 536 537 case 'o': // Open STDOUT for write only 538 { 539 ProcessLaunchInfo::FileAction action; 540 if (action.Open(STDOUT_FILENO, option_arg, false, true)) 541 launch_info.AppendFileAction (action); 542 } 543 break; 544 545 case 'p': // Process plug-in name 546 launch_info.SetProcessPluginName (option_arg); 547 break; 548 549 case 'n': // Disable STDIO 550 { 551 ProcessLaunchInfo::FileAction action; 552 if (action.Open(STDERR_FILENO, "/dev/null", true, true)) 553 launch_info.AppendFileAction (action); 554 if (action.Open(STDOUT_FILENO, "/dev/null", false, true)) 555 launch_info.AppendFileAction (action); 556 if (action.Open(STDIN_FILENO, "/dev/null", true, false)) 557 launch_info.AppendFileAction (action); 558 } 559 break; 560 561 case 'w': 562 launch_info.SetWorkingDirectory (option_arg); 563 break; 564 565 case 't': // Open process in new terminal window 566 launch_info.GetFlags().Set (eLaunchFlagLaunchInTTY); 567 break; 568 569 case 'a': 570 launch_info.GetArchitecture().SetTriple (option_arg, 571 m_interpreter.GetPlatform(true).get()); 572 break; 573 574 case 'A': 575 launch_info.GetFlags().Set (eLaunchFlagDisableASLR); 576 break; 577 578 case 'c': 579 if (option_arg && option_arg[0]) 580 launch_info.SetShell (option_arg); 581 else 582 launch_info.SetShell ("/bin/bash"); 583 break; 584 585 case 'v': 586 launch_info.GetEnvironmentEntries().AppendArgument(option_arg); 587 break; 588 589 default: 590 error.SetErrorStringWithFormat("unrecognized short option character '%c'", short_option); 591 break; 592 593 } 594 return error; 595 } 596 597 OptionDefinition 598 ProcessLaunchCommandOptions::g_option_table[] = 599 { 600 { LLDB_OPT_SET_ALL, false, "stop-at-entry", 's', no_argument, NULL, 0, eArgTypeNone, "Stop at the entry point of the program when launching a process."}, 601 { LLDB_OPT_SET_ALL, false, "disable-aslr", 'A', no_argument, NULL, 0, eArgTypeNone, "Disable address space layout randomization when launching a process."}, 602 { LLDB_OPT_SET_ALL, false, "plugin", 'p', required_argument, NULL, 0, eArgTypePlugin, "Name of the process plugin you want to use."}, 603 { LLDB_OPT_SET_ALL, false, "working-dir", 'w', required_argument, NULL, 0, eArgTypePath, "Set the current working directory to <path> when running the inferior."}, 604 { LLDB_OPT_SET_ALL, false, "arch", 'a', required_argument, NULL, 0, eArgTypeArchitecture, "Set the architecture for the process to launch when ambiguous."}, 605 { LLDB_OPT_SET_ALL, false, "environment", 'v', required_argument, NULL, 0, eArgTypeNone, "Specify an environment variable name/value stirng (--environement NAME=VALUE). Can be specified multiple times for subsequent environment entries."}, 606 { LLDB_OPT_SET_ALL, false, "shell", 'c', optional_argument, NULL, 0, eArgTypePath, "Run the process in a shell (not supported on all platforms)."}, 607 608 { LLDB_OPT_SET_1 , false, "stdin", 'i', required_argument, NULL, 0, eArgTypePath, "Redirect stdin for the process to <path>."}, 609 { LLDB_OPT_SET_1 , false, "stdout", 'o', required_argument, NULL, 0, eArgTypePath, "Redirect stdout for the process to <path>."}, 610 { LLDB_OPT_SET_1 , false, "stderr", 'e', required_argument, NULL, 0, eArgTypePath, "Redirect stderr for the process to <path>."}, 611 612 { LLDB_OPT_SET_2 , false, "tty", 't', no_argument, NULL, 0, eArgTypeNone, "Start the process in a terminal (not supported on all platforms)."}, 613 614 { LLDB_OPT_SET_3 , false, "no-stdio", 'n', no_argument, NULL, 0, eArgTypeNone, "Do not set up for terminal I/O to go to running process."}, 615 616 { 0 , false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 617 }; 618 619 620 621 bool 622 ProcessInstanceInfoMatch::NameMatches (const char *process_name) const 623 { 624 if (m_name_match_type == eNameMatchIgnore || process_name == NULL) 625 return true; 626 const char *match_name = m_match_info.GetName(); 627 if (!match_name) 628 return true; 629 630 return lldb_private::NameMatches (process_name, m_name_match_type, match_name); 631 } 632 633 bool 634 ProcessInstanceInfoMatch::Matches (const ProcessInstanceInfo &proc_info) const 635 { 636 if (!NameMatches (proc_info.GetName())) 637 return false; 638 639 if (m_match_info.ProcessIDIsValid() && 640 m_match_info.GetProcessID() != proc_info.GetProcessID()) 641 return false; 642 643 if (m_match_info.ParentProcessIDIsValid() && 644 m_match_info.GetParentProcessID() != proc_info.GetParentProcessID()) 645 return false; 646 647 if (m_match_info.UserIDIsValid () && 648 m_match_info.GetUserID() != proc_info.GetUserID()) 649 return false; 650 651 if (m_match_info.GroupIDIsValid () && 652 m_match_info.GetGroupID() != proc_info.GetGroupID()) 653 return false; 654 655 if (m_match_info.EffectiveUserIDIsValid () && 656 m_match_info.GetEffectiveUserID() != proc_info.GetEffectiveUserID()) 657 return false; 658 659 if (m_match_info.EffectiveGroupIDIsValid () && 660 m_match_info.GetEffectiveGroupID() != proc_info.GetEffectiveGroupID()) 661 return false; 662 663 if (m_match_info.GetArchitecture().IsValid() && 664 m_match_info.GetArchitecture() != proc_info.GetArchitecture()) 665 return false; 666 return true; 667 } 668 669 bool 670 ProcessInstanceInfoMatch::MatchAllProcesses () const 671 { 672 if (m_name_match_type != eNameMatchIgnore) 673 return false; 674 675 if (m_match_info.ProcessIDIsValid()) 676 return false; 677 678 if (m_match_info.ParentProcessIDIsValid()) 679 return false; 680 681 if (m_match_info.UserIDIsValid ()) 682 return false; 683 684 if (m_match_info.GroupIDIsValid ()) 685 return false; 686 687 if (m_match_info.EffectiveUserIDIsValid ()) 688 return false; 689 690 if (m_match_info.EffectiveGroupIDIsValid ()) 691 return false; 692 693 if (m_match_info.GetArchitecture().IsValid()) 694 return false; 695 696 if (m_match_all_users) 697 return false; 698 699 return true; 700 701 } 702 703 void 704 ProcessInstanceInfoMatch::Clear() 705 { 706 m_match_info.Clear(); 707 m_name_match_type = eNameMatchIgnore; 708 m_match_all_users = false; 709 } 710 711 Process* 712 Process::FindPlugin (Target &target, const char *plugin_name, Listener &listener) 713 { 714 ProcessCreateInstance create_callback = NULL; 715 if (plugin_name) 716 { 717 create_callback = PluginManager::GetProcessCreateCallbackForPluginName (plugin_name); 718 if (create_callback) 719 { 720 std::auto_ptr<Process> debugger_ap(create_callback(target, listener)); 721 if (debugger_ap->CanDebug(target, true)) 722 return debugger_ap.release(); 723 } 724 } 725 else 726 { 727 for (uint32_t idx = 0; (create_callback = PluginManager::GetProcessCreateCallbackAtIndex(idx)) != NULL; ++idx) 728 { 729 std::auto_ptr<Process> debugger_ap(create_callback(target, listener)); 730 if (debugger_ap->CanDebug(target, false)) 731 return debugger_ap.release(); 732 } 733 } 734 return NULL; 735 } 736 737 738 //---------------------------------------------------------------------- 739 // Process constructor 740 //---------------------------------------------------------------------- 741 Process::Process(Target &target, Listener &listener) : 742 UserID (LLDB_INVALID_PROCESS_ID), 743 Broadcaster ("lldb.process"), 744 ProcessInstanceSettings (*GetSettingsController()), 745 m_target (target), 746 m_public_state (eStateUnloaded), 747 m_private_state (eStateUnloaded), 748 m_private_state_broadcaster ("lldb.process.internal_state_broadcaster"), 749 m_private_state_control_broadcaster ("lldb.process.internal_state_control_broadcaster"), 750 m_private_state_listener ("lldb.process.internal_state_listener"), 751 m_private_state_control_wait(), 752 m_private_state_thread (LLDB_INVALID_HOST_THREAD), 753 m_mod_id (), 754 m_thread_index_id (0), 755 m_exit_status (-1), 756 m_exit_string (), 757 m_thread_list (this), 758 m_notifications (), 759 m_image_tokens (), 760 m_listener (listener), 761 m_breakpoint_site_list (), 762 m_dynamic_checkers_ap (), 763 m_unix_signals (), 764 m_abi_sp (), 765 m_process_input_reader (), 766 m_stdio_communication ("process.stdio"), 767 m_stdio_communication_mutex (Mutex::eMutexTypeRecursive), 768 m_stdout_data (), 769 m_stderr_data (), 770 m_memory_cache (*this), 771 m_allocated_memory_cache (*this), 772 m_should_detach (false), 773 m_next_event_action_ap(), 774 m_can_jit(eCanJITYes) 775 { 776 UpdateInstanceName(); 777 778 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 779 if (log) 780 log->Printf ("%p Process::Process()", this); 781 782 SetEventName (eBroadcastBitStateChanged, "state-changed"); 783 SetEventName (eBroadcastBitInterrupt, "interrupt"); 784 SetEventName (eBroadcastBitSTDOUT, "stdout-available"); 785 SetEventName (eBroadcastBitSTDERR, "stderr-available"); 786 787 listener.StartListeningForEvents (this, 788 eBroadcastBitStateChanged | 789 eBroadcastBitInterrupt | 790 eBroadcastBitSTDOUT | 791 eBroadcastBitSTDERR); 792 793 m_private_state_listener.StartListeningForEvents(&m_private_state_broadcaster, 794 eBroadcastBitStateChanged); 795 796 m_private_state_listener.StartListeningForEvents(&m_private_state_control_broadcaster, 797 eBroadcastInternalStateControlStop | 798 eBroadcastInternalStateControlPause | 799 eBroadcastInternalStateControlResume); 800 } 801 802 //---------------------------------------------------------------------- 803 // Destructor 804 //---------------------------------------------------------------------- 805 Process::~Process() 806 { 807 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 808 if (log) 809 log->Printf ("%p Process::~Process()", this); 810 StopPrivateStateThread(); 811 } 812 813 void 814 Process::Finalize() 815 { 816 switch (GetPrivateState()) 817 { 818 case eStateConnected: 819 case eStateAttaching: 820 case eStateLaunching: 821 case eStateStopped: 822 case eStateRunning: 823 case eStateStepping: 824 case eStateCrashed: 825 case eStateSuspended: 826 if (GetShouldDetach()) 827 Detach(); 828 else 829 Destroy(); 830 break; 831 832 case eStateInvalid: 833 case eStateUnloaded: 834 case eStateDetached: 835 case eStateExited: 836 break; 837 } 838 839 // Clear our broadcaster before we proceed with destroying 840 Broadcaster::Clear(); 841 842 // Do any cleanup needed prior to being destructed... Subclasses 843 // that override this method should call this superclass method as well. 844 845 // We need to destroy the loader before the derived Process class gets destroyed 846 // since it is very likely that undoing the loader will require access to the real process. 847 m_dyld_ap.reset(); 848 m_os_ap.reset(); 849 } 850 851 void 852 Process::RegisterNotificationCallbacks (const Notifications& callbacks) 853 { 854 m_notifications.push_back(callbacks); 855 if (callbacks.initialize != NULL) 856 callbacks.initialize (callbacks.baton, this); 857 } 858 859 bool 860 Process::UnregisterNotificationCallbacks(const Notifications& callbacks) 861 { 862 std::vector<Notifications>::iterator pos, end = m_notifications.end(); 863 for (pos = m_notifications.begin(); pos != end; ++pos) 864 { 865 if (pos->baton == callbacks.baton && 866 pos->initialize == callbacks.initialize && 867 pos->process_state_changed == callbacks.process_state_changed) 868 { 869 m_notifications.erase(pos); 870 return true; 871 } 872 } 873 return false; 874 } 875 876 void 877 Process::SynchronouslyNotifyStateChanged (StateType state) 878 { 879 std::vector<Notifications>::iterator notification_pos, notification_end = m_notifications.end(); 880 for (notification_pos = m_notifications.begin(); notification_pos != notification_end; ++notification_pos) 881 { 882 if (notification_pos->process_state_changed) 883 notification_pos->process_state_changed (notification_pos->baton, this, state); 884 } 885 } 886 887 // FIXME: We need to do some work on events before the general Listener sees them. 888 // For instance if we are continuing from a breakpoint, we need to ensure that we do 889 // the little "insert real insn, step & stop" trick. But we can't do that when the 890 // event is delivered by the broadcaster - since that is done on the thread that is 891 // waiting for new events, so if we needed more than one event for our handling, we would 892 // stall. So instead we do it when we fetch the event off of the queue. 893 // 894 895 StateType 896 Process::GetNextEvent (EventSP &event_sp) 897 { 898 StateType state = eStateInvalid; 899 900 if (m_listener.GetNextEventForBroadcaster (this, event_sp) && event_sp) 901 state = Process::ProcessEventData::GetStateFromEvent (event_sp.get()); 902 903 return state; 904 } 905 906 907 StateType 908 Process::WaitForProcessToStop (const TimeValue *timeout) 909 { 910 // We can't just wait for a "stopped" event, because the stopped event may have restarted the target. 911 // We have to actually check each event, and in the case of a stopped event check the restarted flag 912 // on the event. 913 EventSP event_sp; 914 StateType state = GetState(); 915 // If we are exited or detached, we won't ever get back to any 916 // other valid state... 917 if (state == eStateDetached || state == eStateExited) 918 return state; 919 920 while (state != eStateInvalid) 921 { 922 state = WaitForStateChangedEvents (timeout, event_sp); 923 switch (state) 924 { 925 case eStateCrashed: 926 case eStateDetached: 927 case eStateExited: 928 case eStateUnloaded: 929 return state; 930 case eStateStopped: 931 if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) 932 continue; 933 else 934 return state; 935 default: 936 continue; 937 } 938 } 939 return state; 940 } 941 942 943 StateType 944 Process::WaitForState 945 ( 946 const TimeValue *timeout, 947 const StateType *match_states, const uint32_t num_match_states 948 ) 949 { 950 EventSP event_sp; 951 uint32_t i; 952 StateType state = GetState(); 953 while (state != eStateInvalid) 954 { 955 // If we are exited or detached, we won't ever get back to any 956 // other valid state... 957 if (state == eStateDetached || state == eStateExited) 958 return state; 959 960 state = WaitForStateChangedEvents (timeout, event_sp); 961 962 for (i=0; i<num_match_states; ++i) 963 { 964 if (match_states[i] == state) 965 return state; 966 } 967 } 968 return state; 969 } 970 971 bool 972 Process::HijackProcessEvents (Listener *listener) 973 { 974 if (listener != NULL) 975 { 976 return HijackBroadcaster(listener, eBroadcastBitStateChanged); 977 } 978 else 979 return false; 980 } 981 982 void 983 Process::RestoreProcessEvents () 984 { 985 RestoreBroadcaster(); 986 } 987 988 bool 989 Process::HijackPrivateProcessEvents (Listener *listener) 990 { 991 if (listener != NULL) 992 { 993 return m_private_state_broadcaster.HijackBroadcaster(listener, eBroadcastBitStateChanged); 994 } 995 else 996 return false; 997 } 998 999 void 1000 Process::RestorePrivateProcessEvents () 1001 { 1002 m_private_state_broadcaster.RestoreBroadcaster(); 1003 } 1004 1005 StateType 1006 Process::WaitForStateChangedEvents (const TimeValue *timeout, EventSP &event_sp) 1007 { 1008 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1009 1010 if (log) 1011 log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); 1012 1013 StateType state = eStateInvalid; 1014 if (m_listener.WaitForEventForBroadcasterWithType (timeout, 1015 this, 1016 eBroadcastBitStateChanged, 1017 event_sp)) 1018 state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 1019 1020 if (log) 1021 log->Printf ("Process::%s (timeout = %p, event_sp) => %s", 1022 __FUNCTION__, 1023 timeout, 1024 StateAsCString(state)); 1025 return state; 1026 } 1027 1028 Event * 1029 Process::PeekAtStateChangedEvents () 1030 { 1031 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1032 1033 if (log) 1034 log->Printf ("Process::%s...", __FUNCTION__); 1035 1036 Event *event_ptr; 1037 event_ptr = m_listener.PeekAtNextEventForBroadcasterWithType (this, 1038 eBroadcastBitStateChanged); 1039 if (log) 1040 { 1041 if (event_ptr) 1042 { 1043 log->Printf ("Process::%s (event_ptr) => %s", 1044 __FUNCTION__, 1045 StateAsCString(ProcessEventData::GetStateFromEvent (event_ptr))); 1046 } 1047 else 1048 { 1049 log->Printf ("Process::%s no events found", 1050 __FUNCTION__); 1051 } 1052 } 1053 return event_ptr; 1054 } 1055 1056 StateType 1057 Process::WaitForStateChangedEventsPrivate (const TimeValue *timeout, EventSP &event_sp) 1058 { 1059 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1060 1061 if (log) 1062 log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); 1063 1064 StateType state = eStateInvalid; 1065 if (m_private_state_listener.WaitForEventForBroadcasterWithType (timeout, 1066 &m_private_state_broadcaster, 1067 eBroadcastBitStateChanged, 1068 event_sp)) 1069 state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 1070 1071 // This is a bit of a hack, but when we wait here we could very well return 1072 // to the command-line, and that could disable the log, which would render the 1073 // log we got above invalid. 1074 if (log) 1075 { 1076 if (state == eStateInvalid) 1077 log->Printf ("Process::%s (timeout = %p, event_sp) => TIMEOUT", __FUNCTION__, timeout); 1078 else 1079 log->Printf ("Process::%s (timeout = %p, event_sp) => %s", __FUNCTION__, timeout, StateAsCString(state)); 1080 } 1081 return state; 1082 } 1083 1084 bool 1085 Process::WaitForEventsPrivate (const TimeValue *timeout, EventSP &event_sp, bool control_only) 1086 { 1087 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1088 1089 if (log) 1090 log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); 1091 1092 if (control_only) 1093 return m_private_state_listener.WaitForEventForBroadcaster(timeout, &m_private_state_control_broadcaster, event_sp); 1094 else 1095 return m_private_state_listener.WaitForEvent(timeout, event_sp); 1096 } 1097 1098 bool 1099 Process::IsRunning () const 1100 { 1101 return StateIsRunningState (m_public_state.GetValue()); 1102 } 1103 1104 int 1105 Process::GetExitStatus () 1106 { 1107 if (m_public_state.GetValue() == eStateExited) 1108 return m_exit_status; 1109 return -1; 1110 } 1111 1112 1113 const char * 1114 Process::GetExitDescription () 1115 { 1116 if (m_public_state.GetValue() == eStateExited && !m_exit_string.empty()) 1117 return m_exit_string.c_str(); 1118 return NULL; 1119 } 1120 1121 bool 1122 Process::SetExitStatus (int status, const char *cstr) 1123 { 1124 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); 1125 if (log) 1126 log->Printf("Process::SetExitStatus (status=%i (0x%8.8x), description=%s%s%s)", 1127 status, status, 1128 cstr ? "\"" : "", 1129 cstr ? cstr : "NULL", 1130 cstr ? "\"" : ""); 1131 1132 // We were already in the exited state 1133 if (m_private_state.GetValue() == eStateExited) 1134 { 1135 if (log) 1136 log->Printf("Process::SetExitStatus () ignoring exit status because state was already set to eStateExited"); 1137 return false; 1138 } 1139 1140 m_exit_status = status; 1141 if (cstr) 1142 m_exit_string = cstr; 1143 else 1144 m_exit_string.clear(); 1145 1146 DidExit (); 1147 1148 SetPrivateState (eStateExited); 1149 return true; 1150 } 1151 1152 // This static callback can be used to watch for local child processes on 1153 // the current host. The the child process exits, the process will be 1154 // found in the global target list (we want to be completely sure that the 1155 // lldb_private::Process doesn't go away before we can deliver the signal. 1156 bool 1157 Process::SetProcessExitStatus (void *callback_baton, 1158 lldb::pid_t pid, 1159 bool exited, 1160 int signo, // Zero for no signal 1161 int exit_status // Exit value of process if signal is zero 1162 ) 1163 { 1164 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS)); 1165 if (log) 1166 log->Printf ("Process::SetProcessExitStatus (baton=%p, pid=%i, exited=%i, signal=%i, exit_status=%i)\n", 1167 callback_baton, 1168 pid, 1169 exited, 1170 signo, 1171 exit_status); 1172 1173 if (exited) 1174 { 1175 TargetSP target_sp(Debugger::FindTargetWithProcessID (pid)); 1176 if (target_sp) 1177 { 1178 ProcessSP process_sp (target_sp->GetProcessSP()); 1179 if (process_sp) 1180 { 1181 const char *signal_cstr = NULL; 1182 if (signo) 1183 signal_cstr = process_sp->GetUnixSignals().GetSignalAsCString (signo); 1184 1185 process_sp->SetExitStatus (exit_status, signal_cstr); 1186 } 1187 } 1188 return true; 1189 } 1190 return false; 1191 } 1192 1193 1194 void 1195 Process::UpdateThreadListIfNeeded () 1196 { 1197 const uint32_t stop_id = GetStopID(); 1198 if (m_thread_list.GetSize(false) == 0 || stop_id != m_thread_list.GetStopID()) 1199 { 1200 const StateType state = GetPrivateState(); 1201 if (StateIsStoppedState (state, true)) 1202 { 1203 Mutex::Locker locker (m_thread_list.GetMutex ()); 1204 // m_thread_list does have its own mutex, but we need to 1205 // hold onto the mutex between the call to UpdateThreadList(...) 1206 // and the os->UpdateThreadList(...) so it doesn't change on us 1207 ThreadList new_thread_list(this); 1208 // Always update the thread list with the protocol specific 1209 // thread list 1210 UpdateThreadList (m_thread_list, new_thread_list); 1211 OperatingSystem *os = GetOperatingSystem (); 1212 if (os) 1213 os->UpdateThreadList (m_thread_list, new_thread_list); 1214 m_thread_list.Update (new_thread_list); 1215 m_thread_list.SetStopID (stop_id); 1216 } 1217 } 1218 } 1219 1220 uint32_t 1221 Process::GetNextThreadIndexID () 1222 { 1223 return ++m_thread_index_id; 1224 } 1225 1226 StateType 1227 Process::GetState() 1228 { 1229 // If any other threads access this we will need a mutex for it 1230 return m_public_state.GetValue (); 1231 } 1232 1233 void 1234 Process::SetPublicState (StateType new_state) 1235 { 1236 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); 1237 if (log) 1238 log->Printf("Process::SetPublicState (%s)", StateAsCString(new_state)); 1239 m_public_state.SetValue (new_state); 1240 } 1241 1242 StateType 1243 Process::GetPrivateState () 1244 { 1245 return m_private_state.GetValue(); 1246 } 1247 1248 void 1249 Process::SetPrivateState (StateType new_state) 1250 { 1251 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); 1252 bool state_changed = false; 1253 1254 if (log) 1255 log->Printf("Process::SetPrivateState (%s)", StateAsCString(new_state)); 1256 1257 Mutex::Locker locker(m_private_state.GetMutex()); 1258 1259 const StateType old_state = m_private_state.GetValueNoLock (); 1260 state_changed = old_state != new_state; 1261 if (state_changed) 1262 { 1263 m_private_state.SetValueNoLock (new_state); 1264 if (StateIsStoppedState(new_state, false)) 1265 { 1266 m_mod_id.BumpStopID(); 1267 m_memory_cache.Clear(); 1268 if (log) 1269 log->Printf("Process::SetPrivateState (%s) stop_id = %u", StateAsCString(new_state), m_mod_id.GetStopID()); 1270 } 1271 // Use our target to get a shared pointer to ourselves... 1272 m_private_state_broadcaster.BroadcastEvent (eBroadcastBitStateChanged, new ProcessEventData (GetTarget().GetProcessSP(), new_state)); 1273 } 1274 else 1275 { 1276 if (log) 1277 log->Printf("Process::SetPrivateState (%s) state didn't change. Ignoring...", StateAsCString(new_state)); 1278 } 1279 } 1280 1281 void 1282 Process::SetRunningUserExpression (bool on) 1283 { 1284 m_mod_id.SetRunningUserExpression (on); 1285 } 1286 1287 addr_t 1288 Process::GetImageInfoAddress() 1289 { 1290 return LLDB_INVALID_ADDRESS; 1291 } 1292 1293 //---------------------------------------------------------------------- 1294 // LoadImage 1295 // 1296 // This function provides a default implementation that works for most 1297 // unix variants. Any Process subclasses that need to do shared library 1298 // loading differently should override LoadImage and UnloadImage and 1299 // do what is needed. 1300 //---------------------------------------------------------------------- 1301 uint32_t 1302 Process::LoadImage (const FileSpec &image_spec, Error &error) 1303 { 1304 DynamicLoader *loader = GetDynamicLoader(); 1305 if (loader) 1306 { 1307 error = loader->CanLoadImage(); 1308 if (error.Fail()) 1309 return LLDB_INVALID_IMAGE_TOKEN; 1310 } 1311 1312 if (error.Success()) 1313 { 1314 ThreadSP thread_sp(GetThreadList ().GetSelectedThread()); 1315 1316 if (thread_sp) 1317 { 1318 StackFrameSP frame_sp (thread_sp->GetStackFrameAtIndex (0)); 1319 1320 if (frame_sp) 1321 { 1322 ExecutionContext exe_ctx; 1323 frame_sp->CalculateExecutionContext (exe_ctx); 1324 bool unwind_on_error = true; 1325 StreamString expr; 1326 char path[PATH_MAX]; 1327 image_spec.GetPath(path, sizeof(path)); 1328 expr.Printf("dlopen (\"%s\", 2)", path); 1329 const char *prefix = "extern \"C\" void* dlopen (const char *path, int mode);\n"; 1330 lldb::ValueObjectSP result_valobj_sp; 1331 ClangUserExpression::Evaluate (exe_ctx, eExecutionPolicyAlways, lldb::eLanguageTypeUnknown, unwind_on_error, expr.GetData(), prefix, result_valobj_sp); 1332 error = result_valobj_sp->GetError(); 1333 if (error.Success()) 1334 { 1335 Scalar scalar; 1336 if (result_valobj_sp->ResolveValue (scalar)) 1337 { 1338 addr_t image_ptr = scalar.ULongLong(LLDB_INVALID_ADDRESS); 1339 if (image_ptr != 0 && image_ptr != LLDB_INVALID_ADDRESS) 1340 { 1341 uint32_t image_token = m_image_tokens.size(); 1342 m_image_tokens.push_back (image_ptr); 1343 return image_token; 1344 } 1345 } 1346 } 1347 } 1348 } 1349 } 1350 return LLDB_INVALID_IMAGE_TOKEN; 1351 } 1352 1353 //---------------------------------------------------------------------- 1354 // UnloadImage 1355 // 1356 // This function provides a default implementation that works for most 1357 // unix variants. Any Process subclasses that need to do shared library 1358 // loading differently should override LoadImage and UnloadImage and 1359 // do what is needed. 1360 //---------------------------------------------------------------------- 1361 Error 1362 Process::UnloadImage (uint32_t image_token) 1363 { 1364 Error error; 1365 if (image_token < m_image_tokens.size()) 1366 { 1367 const addr_t image_addr = m_image_tokens[image_token]; 1368 if (image_addr == LLDB_INVALID_ADDRESS) 1369 { 1370 error.SetErrorString("image already unloaded"); 1371 } 1372 else 1373 { 1374 DynamicLoader *loader = GetDynamicLoader(); 1375 if (loader) 1376 error = loader->CanLoadImage(); 1377 1378 if (error.Success()) 1379 { 1380 ThreadSP thread_sp(GetThreadList ().GetSelectedThread()); 1381 1382 if (thread_sp) 1383 { 1384 StackFrameSP frame_sp (thread_sp->GetStackFrameAtIndex (0)); 1385 1386 if (frame_sp) 1387 { 1388 ExecutionContext exe_ctx; 1389 frame_sp->CalculateExecutionContext (exe_ctx); 1390 bool unwind_on_error = true; 1391 StreamString expr; 1392 expr.Printf("dlclose ((void *)0x%llx)", image_addr); 1393 const char *prefix = "extern \"C\" int dlclose(void* handle);\n"; 1394 lldb::ValueObjectSP result_valobj_sp; 1395 ClangUserExpression::Evaluate (exe_ctx, eExecutionPolicyAlways, lldb::eLanguageTypeUnknown, unwind_on_error, expr.GetData(), prefix, result_valobj_sp); 1396 if (result_valobj_sp->GetError().Success()) 1397 { 1398 Scalar scalar; 1399 if (result_valobj_sp->ResolveValue (scalar)) 1400 { 1401 if (scalar.UInt(1)) 1402 { 1403 error.SetErrorStringWithFormat("expression failed: \"%s\"", expr.GetData()); 1404 } 1405 else 1406 { 1407 m_image_tokens[image_token] = LLDB_INVALID_ADDRESS; 1408 } 1409 } 1410 } 1411 else 1412 { 1413 error = result_valobj_sp->GetError(); 1414 } 1415 } 1416 } 1417 } 1418 } 1419 } 1420 else 1421 { 1422 error.SetErrorString("invalid image token"); 1423 } 1424 return error; 1425 } 1426 1427 const lldb::ABISP & 1428 Process::GetABI() 1429 { 1430 if (!m_abi_sp) 1431 m_abi_sp = ABI::FindPlugin(m_target.GetArchitecture()); 1432 return m_abi_sp; 1433 } 1434 1435 LanguageRuntime * 1436 Process::GetLanguageRuntime(lldb::LanguageType language) 1437 { 1438 LanguageRuntimeCollection::iterator pos; 1439 pos = m_language_runtimes.find (language); 1440 if (pos == m_language_runtimes.end()) 1441 { 1442 lldb::LanguageRuntimeSP runtime(LanguageRuntime::FindPlugin(this, language)); 1443 1444 m_language_runtimes[language] 1445 = runtime; 1446 return runtime.get(); 1447 } 1448 else 1449 return (*pos).second.get(); 1450 } 1451 1452 CPPLanguageRuntime * 1453 Process::GetCPPLanguageRuntime () 1454 { 1455 LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeC_plus_plus); 1456 if (runtime != NULL && runtime->GetLanguageType() == eLanguageTypeC_plus_plus) 1457 return static_cast<CPPLanguageRuntime *> (runtime); 1458 return NULL; 1459 } 1460 1461 ObjCLanguageRuntime * 1462 Process::GetObjCLanguageRuntime () 1463 { 1464 LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeObjC); 1465 if (runtime != NULL && runtime->GetLanguageType() == eLanguageTypeObjC) 1466 return static_cast<ObjCLanguageRuntime *> (runtime); 1467 return NULL; 1468 } 1469 1470 BreakpointSiteList & 1471 Process::GetBreakpointSiteList() 1472 { 1473 return m_breakpoint_site_list; 1474 } 1475 1476 const BreakpointSiteList & 1477 Process::GetBreakpointSiteList() const 1478 { 1479 return m_breakpoint_site_list; 1480 } 1481 1482 1483 void 1484 Process::DisableAllBreakpointSites () 1485 { 1486 m_breakpoint_site_list.SetEnabledForAll (false); 1487 } 1488 1489 Error 1490 Process::ClearBreakpointSiteByID (lldb::user_id_t break_id) 1491 { 1492 Error error (DisableBreakpointSiteByID (break_id)); 1493 1494 if (error.Success()) 1495 m_breakpoint_site_list.Remove(break_id); 1496 1497 return error; 1498 } 1499 1500 Error 1501 Process::DisableBreakpointSiteByID (lldb::user_id_t break_id) 1502 { 1503 Error error; 1504 BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); 1505 if (bp_site_sp) 1506 { 1507 if (bp_site_sp->IsEnabled()) 1508 error = DisableBreakpoint (bp_site_sp.get()); 1509 } 1510 else 1511 { 1512 error.SetErrorStringWithFormat("invalid breakpoint site ID: %llu", break_id); 1513 } 1514 1515 return error; 1516 } 1517 1518 Error 1519 Process::EnableBreakpointSiteByID (lldb::user_id_t break_id) 1520 { 1521 Error error; 1522 BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); 1523 if (bp_site_sp) 1524 { 1525 if (!bp_site_sp->IsEnabled()) 1526 error = EnableBreakpoint (bp_site_sp.get()); 1527 } 1528 else 1529 { 1530 error.SetErrorStringWithFormat("invalid breakpoint site ID: %llu", break_id); 1531 } 1532 return error; 1533 } 1534 1535 lldb::break_id_t 1536 Process::CreateBreakpointSite (BreakpointLocationSP &owner, bool use_hardware) 1537 { 1538 const addr_t load_addr = owner->GetAddress().GetOpcodeLoadAddress (&m_target); 1539 if (load_addr != LLDB_INVALID_ADDRESS) 1540 { 1541 BreakpointSiteSP bp_site_sp; 1542 1543 // Look up this breakpoint site. If it exists, then add this new owner, otherwise 1544 // create a new breakpoint site and add it. 1545 1546 bp_site_sp = m_breakpoint_site_list.FindByAddress (load_addr); 1547 1548 if (bp_site_sp) 1549 { 1550 bp_site_sp->AddOwner (owner); 1551 owner->SetBreakpointSite (bp_site_sp); 1552 return bp_site_sp->GetID(); 1553 } 1554 else 1555 { 1556 bp_site_sp.reset (new BreakpointSite (&m_breakpoint_site_list, owner, load_addr, LLDB_INVALID_THREAD_ID, use_hardware)); 1557 if (bp_site_sp) 1558 { 1559 if (EnableBreakpoint (bp_site_sp.get()).Success()) 1560 { 1561 owner->SetBreakpointSite (bp_site_sp); 1562 return m_breakpoint_site_list.Add (bp_site_sp); 1563 } 1564 } 1565 } 1566 } 1567 // We failed to enable the breakpoint 1568 return LLDB_INVALID_BREAK_ID; 1569 1570 } 1571 1572 void 1573 Process::RemoveOwnerFromBreakpointSite (lldb::user_id_t owner_id, lldb::user_id_t owner_loc_id, BreakpointSiteSP &bp_site_sp) 1574 { 1575 uint32_t num_owners = bp_site_sp->RemoveOwner (owner_id, owner_loc_id); 1576 if (num_owners == 0) 1577 { 1578 DisableBreakpoint(bp_site_sp.get()); 1579 m_breakpoint_site_list.RemoveByAddress(bp_site_sp->GetLoadAddress()); 1580 } 1581 } 1582 1583 1584 size_t 1585 Process::RemoveBreakpointOpcodesFromBuffer (addr_t bp_addr, size_t size, uint8_t *buf) const 1586 { 1587 size_t bytes_removed = 0; 1588 addr_t intersect_addr; 1589 size_t intersect_size; 1590 size_t opcode_offset; 1591 size_t idx; 1592 BreakpointSiteSP bp_sp; 1593 BreakpointSiteList bp_sites_in_range; 1594 1595 if (m_breakpoint_site_list.FindInRange (bp_addr, bp_addr + size, bp_sites_in_range)) 1596 { 1597 for (idx = 0; (bp_sp = bp_sites_in_range.GetByIndex(idx)); ++idx) 1598 { 1599 if (bp_sp->GetType() == BreakpointSite::eSoftware) 1600 { 1601 if (bp_sp->IntersectsRange(bp_addr, size, &intersect_addr, &intersect_size, &opcode_offset)) 1602 { 1603 assert(bp_addr <= intersect_addr && intersect_addr < bp_addr + size); 1604 assert(bp_addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= bp_addr + size); 1605 assert(opcode_offset + intersect_size <= bp_sp->GetByteSize()); 1606 size_t buf_offset = intersect_addr - bp_addr; 1607 ::memcpy(buf + buf_offset, bp_sp->GetSavedOpcodeBytes() + opcode_offset, intersect_size); 1608 } 1609 } 1610 } 1611 } 1612 return bytes_removed; 1613 } 1614 1615 1616 1617 size_t 1618 Process::GetSoftwareBreakpointTrapOpcode (BreakpointSite* bp_site) 1619 { 1620 PlatformSP platform_sp (m_target.GetPlatform()); 1621 if (platform_sp) 1622 return platform_sp->GetSoftwareBreakpointTrapOpcode (m_target, bp_site); 1623 return 0; 1624 } 1625 1626 Error 1627 Process::EnableSoftwareBreakpoint (BreakpointSite *bp_site) 1628 { 1629 Error error; 1630 assert (bp_site != NULL); 1631 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); 1632 const addr_t bp_addr = bp_site->GetLoadAddress(); 1633 if (log) 1634 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx", bp_site->GetID(), (uint64_t)bp_addr); 1635 if (bp_site->IsEnabled()) 1636 { 1637 if (log) 1638 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already enabled", bp_site->GetID(), (uint64_t)bp_addr); 1639 return error; 1640 } 1641 1642 if (bp_addr == LLDB_INVALID_ADDRESS) 1643 { 1644 error.SetErrorString("BreakpointSite contains an invalid load address."); 1645 return error; 1646 } 1647 // Ask the lldb::Process subclass to fill in the correct software breakpoint 1648 // trap for the breakpoint site 1649 const size_t bp_opcode_size = GetSoftwareBreakpointTrapOpcode(bp_site); 1650 1651 if (bp_opcode_size == 0) 1652 { 1653 error.SetErrorStringWithFormat ("Process::GetSoftwareBreakpointTrapOpcode() returned zero, unable to get breakpoint trap for address 0x%llx", bp_addr); 1654 } 1655 else 1656 { 1657 const uint8_t * const bp_opcode_bytes = bp_site->GetTrapOpcodeBytes(); 1658 1659 if (bp_opcode_bytes == NULL) 1660 { 1661 error.SetErrorString ("BreakpointSite doesn't contain a valid breakpoint trap opcode."); 1662 return error; 1663 } 1664 1665 // Save the original opcode by reading it 1666 if (DoReadMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), bp_opcode_size, error) == bp_opcode_size) 1667 { 1668 // Write a software breakpoint in place of the original opcode 1669 if (DoWriteMemory(bp_addr, bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) 1670 { 1671 uint8_t verify_bp_opcode_bytes[64]; 1672 if (DoReadMemory(bp_addr, verify_bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) 1673 { 1674 if (::memcmp(bp_opcode_bytes, verify_bp_opcode_bytes, bp_opcode_size) == 0) 1675 { 1676 bp_site->SetEnabled(true); 1677 bp_site->SetType (BreakpointSite::eSoftware); 1678 if (log) 1679 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS", 1680 bp_site->GetID(), 1681 (uint64_t)bp_addr); 1682 } 1683 else 1684 error.SetErrorString("failed to verify the breakpoint trap in memory."); 1685 } 1686 else 1687 error.SetErrorString("Unable to read memory to verify breakpoint trap."); 1688 } 1689 else 1690 error.SetErrorString("Unable to write breakpoint trap to memory."); 1691 } 1692 else 1693 error.SetErrorString("Unable to read memory at breakpoint address."); 1694 } 1695 if (log && error.Fail()) 1696 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s", 1697 bp_site->GetID(), 1698 (uint64_t)bp_addr, 1699 error.AsCString()); 1700 return error; 1701 } 1702 1703 Error 1704 Process::DisableSoftwareBreakpoint (BreakpointSite *bp_site) 1705 { 1706 Error error; 1707 assert (bp_site != NULL); 1708 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); 1709 addr_t bp_addr = bp_site->GetLoadAddress(); 1710 lldb::user_id_t breakID = bp_site->GetID(); 1711 if (log) 1712 log->Printf ("Process::DisableBreakpoint (breakID = %llu) addr = 0x%llx", breakID, (uint64_t)bp_addr); 1713 1714 if (bp_site->IsHardware()) 1715 { 1716 error.SetErrorString("Breakpoint site is a hardware breakpoint."); 1717 } 1718 else if (bp_site->IsEnabled()) 1719 { 1720 const size_t break_op_size = bp_site->GetByteSize(); 1721 const uint8_t * const break_op = bp_site->GetTrapOpcodeBytes(); 1722 if (break_op_size > 0) 1723 { 1724 // Clear a software breakoint instruction 1725 uint8_t curr_break_op[8]; 1726 assert (break_op_size <= sizeof(curr_break_op)); 1727 bool break_op_found = false; 1728 1729 // Read the breakpoint opcode 1730 if (DoReadMemory (bp_addr, curr_break_op, break_op_size, error) == break_op_size) 1731 { 1732 bool verify = false; 1733 // Make sure we have the a breakpoint opcode exists at this address 1734 if (::memcmp (curr_break_op, break_op, break_op_size) == 0) 1735 { 1736 break_op_found = true; 1737 // We found a valid breakpoint opcode at this address, now restore 1738 // the saved opcode. 1739 if (DoWriteMemory (bp_addr, bp_site->GetSavedOpcodeBytes(), break_op_size, error) == break_op_size) 1740 { 1741 verify = true; 1742 } 1743 else 1744 error.SetErrorString("Memory write failed when restoring original opcode."); 1745 } 1746 else 1747 { 1748 error.SetErrorString("Original breakpoint trap is no longer in memory."); 1749 // Set verify to true and so we can check if the original opcode has already been restored 1750 verify = true; 1751 } 1752 1753 if (verify) 1754 { 1755 uint8_t verify_opcode[8]; 1756 assert (break_op_size < sizeof(verify_opcode)); 1757 // Verify that our original opcode made it back to the inferior 1758 if (DoReadMemory (bp_addr, verify_opcode, break_op_size, error) == break_op_size) 1759 { 1760 // compare the memory we just read with the original opcode 1761 if (::memcmp (bp_site->GetSavedOpcodeBytes(), verify_opcode, break_op_size) == 0) 1762 { 1763 // SUCCESS 1764 bp_site->SetEnabled(false); 1765 if (log) 1766 log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS", bp_site->GetID(), (uint64_t)bp_addr); 1767 return error; 1768 } 1769 else 1770 { 1771 if (break_op_found) 1772 error.SetErrorString("Failed to restore original opcode."); 1773 } 1774 } 1775 else 1776 error.SetErrorString("Failed to read memory to verify that breakpoint trap was restored."); 1777 } 1778 } 1779 else 1780 error.SetErrorString("Unable to read memory that should contain the breakpoint trap."); 1781 } 1782 } 1783 else 1784 { 1785 if (log) 1786 log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already disabled", bp_site->GetID(), (uint64_t)bp_addr); 1787 return error; 1788 } 1789 1790 if (log) 1791 log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s", 1792 bp_site->GetID(), 1793 (uint64_t)bp_addr, 1794 error.AsCString()); 1795 return error; 1796 1797 } 1798 1799 // Comment out line below to disable memory caching 1800 #define ENABLE_MEMORY_CACHING 1801 // Uncomment to verify memory caching works after making changes to caching code 1802 //#define VERIFY_MEMORY_READS 1803 1804 #if defined (ENABLE_MEMORY_CACHING) 1805 1806 #if defined (VERIFY_MEMORY_READS) 1807 1808 size_t 1809 Process::ReadMemory (addr_t addr, void *buf, size_t size, Error &error) 1810 { 1811 // Memory caching is enabled, with debug verification 1812 if (buf && size) 1813 { 1814 // Uncomment the line below to make sure memory caching is working. 1815 // I ran this through the test suite and got no assertions, so I am 1816 // pretty confident this is working well. If any changes are made to 1817 // memory caching, uncomment the line below and test your changes! 1818 1819 // Verify all memory reads by using the cache first, then redundantly 1820 // reading the same memory from the inferior and comparing to make sure 1821 // everything is exactly the same. 1822 std::string verify_buf (size, '\0'); 1823 assert (verify_buf.size() == size); 1824 const size_t cache_bytes_read = m_memory_cache.Read (this, addr, buf, size, error); 1825 Error verify_error; 1826 const size_t verify_bytes_read = ReadMemoryFromInferior (addr, const_cast<char *>(verify_buf.data()), verify_buf.size(), verify_error); 1827 assert (cache_bytes_read == verify_bytes_read); 1828 assert (memcmp(buf, verify_buf.data(), verify_buf.size()) == 0); 1829 assert (verify_error.Success() == error.Success()); 1830 return cache_bytes_read; 1831 } 1832 return 0; 1833 } 1834 1835 #else // #if defined (VERIFY_MEMORY_READS) 1836 1837 size_t 1838 Process::ReadMemory (addr_t addr, void *buf, size_t size, Error &error) 1839 { 1840 // Memory caching enabled, no verification 1841 return m_memory_cache.Read (addr, buf, size, error); 1842 } 1843 1844 #endif // #else for #if defined (VERIFY_MEMORY_READS) 1845 1846 #else // #if defined (ENABLE_MEMORY_CACHING) 1847 1848 size_t 1849 Process::ReadMemory (addr_t addr, void *buf, size_t size, Error &error) 1850 { 1851 // Memory caching is disabled 1852 return ReadMemoryFromInferior (addr, buf, size, error); 1853 } 1854 1855 #endif // #else for #if defined (ENABLE_MEMORY_CACHING) 1856 1857 1858 size_t 1859 Process::ReadCStringFromMemory (addr_t addr, char *dst, size_t dst_max_len) 1860 { 1861 size_t total_cstr_len = 0; 1862 if (dst && dst_max_len) 1863 { 1864 // NULL out everything just to be safe 1865 memset (dst, 0, dst_max_len); 1866 Error error; 1867 addr_t curr_addr = addr; 1868 const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize(); 1869 size_t bytes_left = dst_max_len - 1; 1870 char *curr_dst = dst; 1871 1872 while (bytes_left > 0) 1873 { 1874 addr_t cache_line_bytes_left = cache_line_size - (curr_addr % cache_line_size); 1875 addr_t bytes_to_read = std::min<addr_t>(bytes_left, cache_line_bytes_left); 1876 size_t bytes_read = ReadMemory (curr_addr, curr_dst, bytes_to_read, error); 1877 1878 if (bytes_read == 0) 1879 { 1880 dst[total_cstr_len] = '\0'; 1881 break; 1882 } 1883 const size_t len = strlen(curr_dst); 1884 1885 total_cstr_len += len; 1886 1887 if (len < bytes_to_read) 1888 break; 1889 1890 curr_dst += bytes_read; 1891 curr_addr += bytes_read; 1892 bytes_left -= bytes_read; 1893 } 1894 } 1895 return total_cstr_len; 1896 } 1897 1898 size_t 1899 Process::ReadMemoryFromInferior (addr_t addr, void *buf, size_t size, Error &error) 1900 { 1901 if (buf == NULL || size == 0) 1902 return 0; 1903 1904 size_t bytes_read = 0; 1905 uint8_t *bytes = (uint8_t *)buf; 1906 1907 while (bytes_read < size) 1908 { 1909 const size_t curr_size = size - bytes_read; 1910 const size_t curr_bytes_read = DoReadMemory (addr + bytes_read, 1911 bytes + bytes_read, 1912 curr_size, 1913 error); 1914 bytes_read += curr_bytes_read; 1915 if (curr_bytes_read == curr_size || curr_bytes_read == 0) 1916 break; 1917 } 1918 1919 // Replace any software breakpoint opcodes that fall into this range back 1920 // into "buf" before we return 1921 if (bytes_read > 0) 1922 RemoveBreakpointOpcodesFromBuffer (addr, bytes_read, (uint8_t *)buf); 1923 return bytes_read; 1924 } 1925 1926 uint64_t 1927 Process::ReadUnsignedIntegerFromMemory (lldb::addr_t vm_addr, size_t integer_byte_size, uint64_t fail_value, Error &error) 1928 { 1929 Scalar scalar; 1930 if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, false, scalar, error)) 1931 return scalar.ULongLong(fail_value); 1932 return fail_value; 1933 } 1934 1935 addr_t 1936 Process::ReadPointerFromMemory (lldb::addr_t vm_addr, Error &error) 1937 { 1938 Scalar scalar; 1939 if (ReadScalarIntegerFromMemory(vm_addr, GetAddressByteSize(), false, scalar, error)) 1940 return scalar.ULongLong(LLDB_INVALID_ADDRESS); 1941 return LLDB_INVALID_ADDRESS; 1942 } 1943 1944 1945 bool 1946 Process::WritePointerToMemory (lldb::addr_t vm_addr, 1947 lldb::addr_t ptr_value, 1948 Error &error) 1949 { 1950 Scalar scalar; 1951 const uint32_t addr_byte_size = GetAddressByteSize(); 1952 if (addr_byte_size <= 4) 1953 scalar = (uint32_t)ptr_value; 1954 else 1955 scalar = ptr_value; 1956 return WriteScalarToMemory(vm_addr, scalar, addr_byte_size, error) == addr_byte_size; 1957 } 1958 1959 size_t 1960 Process::WriteMemoryPrivate (addr_t addr, const void *buf, size_t size, Error &error) 1961 { 1962 size_t bytes_written = 0; 1963 const uint8_t *bytes = (const uint8_t *)buf; 1964 1965 while (bytes_written < size) 1966 { 1967 const size_t curr_size = size - bytes_written; 1968 const size_t curr_bytes_written = DoWriteMemory (addr + bytes_written, 1969 bytes + bytes_written, 1970 curr_size, 1971 error); 1972 bytes_written += curr_bytes_written; 1973 if (curr_bytes_written == curr_size || curr_bytes_written == 0) 1974 break; 1975 } 1976 return bytes_written; 1977 } 1978 1979 size_t 1980 Process::WriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 1981 { 1982 #if defined (ENABLE_MEMORY_CACHING) 1983 m_memory_cache.Flush (addr, size); 1984 #endif 1985 1986 if (buf == NULL || size == 0) 1987 return 0; 1988 1989 m_mod_id.BumpMemoryID(); 1990 1991 // We need to write any data that would go where any current software traps 1992 // (enabled software breakpoints) any software traps (breakpoints) that we 1993 // may have placed in our tasks memory. 1994 1995 BreakpointSiteList::collection::const_iterator iter = m_breakpoint_site_list.GetMap()->lower_bound (addr); 1996 BreakpointSiteList::collection::const_iterator end = m_breakpoint_site_list.GetMap()->end(); 1997 1998 if (iter == end || iter->second->GetLoadAddress() > addr + size) 1999 return WriteMemoryPrivate (addr, buf, size, error); 2000 2001 BreakpointSiteList::collection::const_iterator pos; 2002 size_t bytes_written = 0; 2003 addr_t intersect_addr = 0; 2004 size_t intersect_size = 0; 2005 size_t opcode_offset = 0; 2006 const uint8_t *ubuf = (const uint8_t *)buf; 2007 2008 for (pos = iter; pos != end; ++pos) 2009 { 2010 BreakpointSiteSP bp; 2011 bp = pos->second; 2012 2013 assert(bp->IntersectsRange(addr, size, &intersect_addr, &intersect_size, &opcode_offset)); 2014 assert(addr <= intersect_addr && intersect_addr < addr + size); 2015 assert(addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= addr + size); 2016 assert(opcode_offset + intersect_size <= bp->GetByteSize()); 2017 2018 // Check for bytes before this breakpoint 2019 const addr_t curr_addr = addr + bytes_written; 2020 if (intersect_addr > curr_addr) 2021 { 2022 // There are some bytes before this breakpoint that we need to 2023 // just write to memory 2024 size_t curr_size = intersect_addr - curr_addr; 2025 size_t curr_bytes_written = WriteMemoryPrivate (curr_addr, 2026 ubuf + bytes_written, 2027 curr_size, 2028 error); 2029 bytes_written += curr_bytes_written; 2030 if (curr_bytes_written != curr_size) 2031 { 2032 // We weren't able to write all of the requested bytes, we 2033 // are done looping and will return the number of bytes that 2034 // we have written so far. 2035 break; 2036 } 2037 } 2038 2039 // Now write any bytes that would cover up any software breakpoints 2040 // directly into the breakpoint opcode buffer 2041 ::memcpy(bp->GetSavedOpcodeBytes() + opcode_offset, ubuf + bytes_written, intersect_size); 2042 bytes_written += intersect_size; 2043 } 2044 2045 // Write any remaining bytes after the last breakpoint if we have any left 2046 if (bytes_written < size) 2047 bytes_written += WriteMemoryPrivate (addr + bytes_written, 2048 ubuf + bytes_written, 2049 size - bytes_written, 2050 error); 2051 2052 return bytes_written; 2053 } 2054 2055 size_t 2056 Process::WriteScalarToMemory (addr_t addr, const Scalar &scalar, uint32_t byte_size, Error &error) 2057 { 2058 if (byte_size == UINT32_MAX) 2059 byte_size = scalar.GetByteSize(); 2060 if (byte_size > 0) 2061 { 2062 uint8_t buf[32]; 2063 const size_t mem_size = scalar.GetAsMemoryData (buf, byte_size, GetByteOrder(), error); 2064 if (mem_size > 0) 2065 return WriteMemory(addr, buf, mem_size, error); 2066 else 2067 error.SetErrorString ("failed to get scalar as memory data"); 2068 } 2069 else 2070 { 2071 error.SetErrorString ("invalid scalar value"); 2072 } 2073 return 0; 2074 } 2075 2076 size_t 2077 Process::ReadScalarIntegerFromMemory (addr_t addr, 2078 uint32_t byte_size, 2079 bool is_signed, 2080 Scalar &scalar, 2081 Error &error) 2082 { 2083 uint64_t uval; 2084 2085 if (byte_size <= sizeof(uval)) 2086 { 2087 size_t bytes_read = ReadMemory (addr, &uval, byte_size, error); 2088 if (bytes_read == byte_size) 2089 { 2090 DataExtractor data (&uval, sizeof(uval), GetByteOrder(), GetAddressByteSize()); 2091 uint32_t offset = 0; 2092 if (byte_size <= 4) 2093 scalar = data.GetMaxU32 (&offset, byte_size); 2094 else 2095 scalar = data.GetMaxU64 (&offset, byte_size); 2096 2097 if (is_signed) 2098 scalar.SignExtend(byte_size * 8); 2099 return bytes_read; 2100 } 2101 } 2102 else 2103 { 2104 error.SetErrorStringWithFormat ("byte size of %u is too large for integer scalar type", byte_size); 2105 } 2106 return 0; 2107 } 2108 2109 #define USE_ALLOCATE_MEMORY_CACHE 1 2110 addr_t 2111 Process::AllocateMemory(size_t size, uint32_t permissions, Error &error) 2112 { 2113 if (GetPrivateState() != eStateStopped) 2114 return LLDB_INVALID_ADDRESS; 2115 2116 #if defined (USE_ALLOCATE_MEMORY_CACHE) 2117 return m_allocated_memory_cache.AllocateMemory(size, permissions, error); 2118 #else 2119 addr_t allocated_addr = DoAllocateMemory (size, permissions, error); 2120 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2121 if (log) 2122 log->Printf("Process::AllocateMemory(size=%4zu, permissions=%s) => 0x%16.16llx (m_stop_id = %u m_memory_id = %u)", 2123 size, 2124 GetPermissionsAsCString (permissions), 2125 (uint64_t)allocated_addr, 2126 m_mod_id.GetStopID(), 2127 m_mod_id.GetMemoryID()); 2128 return allocated_addr; 2129 #endif 2130 } 2131 2132 bool 2133 Process::CanJIT () 2134 { 2135 return m_can_jit == eCanJITYes; 2136 } 2137 2138 void 2139 Process::SetCanJIT (bool can_jit) 2140 { 2141 m_can_jit = (can_jit ? eCanJITYes : eCanJITNo); 2142 } 2143 2144 Error 2145 Process::DeallocateMemory (addr_t ptr) 2146 { 2147 Error error; 2148 #if defined (USE_ALLOCATE_MEMORY_CACHE) 2149 if (!m_allocated_memory_cache.DeallocateMemory(ptr)) 2150 { 2151 error.SetErrorStringWithFormat ("deallocation of memory at 0x%llx failed.", (uint64_t)ptr); 2152 } 2153 #else 2154 error = DoDeallocateMemory (ptr); 2155 2156 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2157 if (log) 2158 log->Printf("Process::DeallocateMemory(addr=0x%16.16llx) => err = %s (m_stop_id = %u, m_memory_id = %u)", 2159 ptr, 2160 error.AsCString("SUCCESS"), 2161 m_mod_id.GetStopID(), 2162 m_mod_id.GetMemoryID()); 2163 #endif 2164 return error; 2165 } 2166 2167 2168 Error 2169 Process::EnableWatchpoint (Watchpoint *watchpoint) 2170 { 2171 Error error; 2172 error.SetErrorString("watchpoints are not supported"); 2173 return error; 2174 } 2175 2176 Error 2177 Process::DisableWatchpoint (Watchpoint *watchpoint) 2178 { 2179 Error error; 2180 error.SetErrorString("watchpoints are not supported"); 2181 return error; 2182 } 2183 2184 StateType 2185 Process::WaitForProcessStopPrivate (const TimeValue *timeout, EventSP &event_sp) 2186 { 2187 StateType state; 2188 // Now wait for the process to launch and return control to us, and then 2189 // call DidLaunch: 2190 while (1) 2191 { 2192 event_sp.reset(); 2193 state = WaitForStateChangedEventsPrivate (timeout, event_sp); 2194 2195 if (StateIsStoppedState(state, false)) 2196 break; 2197 2198 // If state is invalid, then we timed out 2199 if (state == eStateInvalid) 2200 break; 2201 2202 if (event_sp) 2203 HandlePrivateEvent (event_sp); 2204 } 2205 return state; 2206 } 2207 2208 Error 2209 Process::Launch (const ProcessLaunchInfo &launch_info) 2210 { 2211 Error error; 2212 m_abi_sp.reset(); 2213 m_dyld_ap.reset(); 2214 m_os_ap.reset(); 2215 m_process_input_reader.reset(); 2216 2217 Module *exe_module = m_target.GetExecutableModulePointer(); 2218 if (exe_module) 2219 { 2220 char local_exec_file_path[PATH_MAX]; 2221 char platform_exec_file_path[PATH_MAX]; 2222 exe_module->GetFileSpec().GetPath(local_exec_file_path, sizeof(local_exec_file_path)); 2223 exe_module->GetPlatformFileSpec().GetPath(platform_exec_file_path, sizeof(platform_exec_file_path)); 2224 if (exe_module->GetFileSpec().Exists()) 2225 { 2226 if (PrivateStateThreadIsValid ()) 2227 PausePrivateStateThread (); 2228 2229 error = WillLaunch (exe_module); 2230 if (error.Success()) 2231 { 2232 SetPublicState (eStateLaunching); 2233 m_should_detach = false; 2234 2235 // Now launch using these arguments. 2236 error = DoLaunch (exe_module, launch_info); 2237 2238 if (error.Fail()) 2239 { 2240 if (GetID() != LLDB_INVALID_PROCESS_ID) 2241 { 2242 SetID (LLDB_INVALID_PROCESS_ID); 2243 const char *error_string = error.AsCString(); 2244 if (error_string == NULL) 2245 error_string = "launch failed"; 2246 SetExitStatus (-1, error_string); 2247 } 2248 } 2249 else 2250 { 2251 EventSP event_sp; 2252 TimeValue timeout_time; 2253 timeout_time = TimeValue::Now(); 2254 timeout_time.OffsetWithSeconds(10); 2255 StateType state = WaitForProcessStopPrivate(&timeout_time, event_sp); 2256 2257 if (state == eStateInvalid || event_sp.get() == NULL) 2258 { 2259 // We were able to launch the process, but we failed to 2260 // catch the initial stop. 2261 SetExitStatus (0, "failed to catch stop after launch"); 2262 Destroy(); 2263 } 2264 else if (state == eStateStopped || state == eStateCrashed) 2265 { 2266 2267 DidLaunch (); 2268 2269 m_dyld_ap.reset (DynamicLoader::FindPlugin (this, NULL)); 2270 if (m_dyld_ap.get()) 2271 m_dyld_ap->DidLaunch(); 2272 2273 m_os_ap.reset (OperatingSystem::FindPlugin (this, NULL)); 2274 // This delays passing the stopped event to listeners till DidLaunch gets 2275 // a chance to complete... 2276 HandlePrivateEvent (event_sp); 2277 2278 if (PrivateStateThreadIsValid ()) 2279 ResumePrivateStateThread (); 2280 else 2281 StartPrivateStateThread (); 2282 } 2283 else if (state == eStateExited) 2284 { 2285 // We exited while trying to launch somehow. Don't call DidLaunch as that's 2286 // not likely to work, and return an invalid pid. 2287 HandlePrivateEvent (event_sp); 2288 } 2289 } 2290 } 2291 } 2292 else 2293 { 2294 error.SetErrorStringWithFormat("file doesn't exist: '%s'", local_exec_file_path); 2295 } 2296 } 2297 return error; 2298 } 2299 2300 Process::NextEventAction::EventActionResult 2301 Process::AttachCompletionHandler::PerformAction (lldb::EventSP &event_sp) 2302 { 2303 StateType state = ProcessEventData::GetStateFromEvent (event_sp.get()); 2304 switch (state) 2305 { 2306 case eStateRunning: 2307 case eStateConnected: 2308 return eEventActionRetry; 2309 2310 case eStateStopped: 2311 case eStateCrashed: 2312 { 2313 // During attach, prior to sending the eStateStopped event, 2314 // lldb_private::Process subclasses must set the process must set 2315 // the new process ID. 2316 assert (m_process->GetID() != LLDB_INVALID_PROCESS_ID); 2317 if (m_exec_count > 0) 2318 { 2319 --m_exec_count; 2320 m_process->Resume(); 2321 return eEventActionRetry; 2322 } 2323 else 2324 { 2325 m_process->CompleteAttach (); 2326 return eEventActionSuccess; 2327 } 2328 } 2329 break; 2330 2331 default: 2332 case eStateExited: 2333 case eStateInvalid: 2334 break; 2335 } 2336 2337 m_exit_string.assign ("No valid Process"); 2338 return eEventActionExit; 2339 } 2340 2341 Process::NextEventAction::EventActionResult 2342 Process::AttachCompletionHandler::HandleBeingInterrupted() 2343 { 2344 return eEventActionSuccess; 2345 } 2346 2347 const char * 2348 Process::AttachCompletionHandler::GetExitString () 2349 { 2350 return m_exit_string.c_str(); 2351 } 2352 2353 Error 2354 Process::Attach (ProcessAttachInfo &attach_info) 2355 { 2356 m_abi_sp.reset(); 2357 m_process_input_reader.reset(); 2358 m_dyld_ap.reset(); 2359 m_os_ap.reset(); 2360 2361 lldb::pid_t attach_pid = attach_info.GetProcessID(); 2362 Error error; 2363 if (attach_pid == LLDB_INVALID_PROCESS_ID) 2364 { 2365 char process_name[PATH_MAX]; 2366 2367 if (attach_info.GetExecutableFile().GetPath (process_name, sizeof(process_name))) 2368 { 2369 const bool wait_for_launch = attach_info.GetWaitForLaunch(); 2370 2371 if (wait_for_launch) 2372 { 2373 error = WillAttachToProcessWithName(process_name, wait_for_launch); 2374 if (error.Success()) 2375 { 2376 m_should_detach = true; 2377 2378 SetPublicState (eStateAttaching); 2379 error = DoAttachToProcessWithName (process_name, wait_for_launch); 2380 if (error.Fail()) 2381 { 2382 if (GetID() != LLDB_INVALID_PROCESS_ID) 2383 { 2384 SetID (LLDB_INVALID_PROCESS_ID); 2385 if (error.AsCString() == NULL) 2386 error.SetErrorString("attach failed"); 2387 2388 SetExitStatus(-1, error.AsCString()); 2389 } 2390 } 2391 else 2392 { 2393 SetNextEventAction(new Process::AttachCompletionHandler(this, attach_info.GetResumeCount())); 2394 StartPrivateStateThread(); 2395 } 2396 return error; 2397 } 2398 } 2399 else 2400 { 2401 ProcessInstanceInfoList process_infos; 2402 PlatformSP platform_sp (m_target.GetPlatform ()); 2403 2404 if (platform_sp) 2405 { 2406 ProcessInstanceInfoMatch match_info; 2407 match_info.GetProcessInfo() = attach_info; 2408 match_info.SetNameMatchType (eNameMatchEquals); 2409 platform_sp->FindProcesses (match_info, process_infos); 2410 const uint32_t num_matches = process_infos.GetSize(); 2411 if (num_matches == 1) 2412 { 2413 attach_pid = process_infos.GetProcessIDAtIndex(0); 2414 // Fall through and attach using the above process ID 2415 } 2416 else 2417 { 2418 match_info.GetProcessInfo().GetExecutableFile().GetPath (process_name, sizeof(process_name)); 2419 if (num_matches > 1) 2420 error.SetErrorStringWithFormat ("more than one process named %s", process_name); 2421 else 2422 error.SetErrorStringWithFormat ("could not find a process named %s", process_name); 2423 } 2424 } 2425 else 2426 { 2427 error.SetErrorString ("invalid platform, can't find processes by name"); 2428 return error; 2429 } 2430 } 2431 } 2432 else 2433 { 2434 error.SetErrorString ("invalid process name"); 2435 } 2436 } 2437 2438 if (attach_pid != LLDB_INVALID_PROCESS_ID) 2439 { 2440 error = WillAttachToProcessWithID(attach_pid); 2441 if (error.Success()) 2442 { 2443 m_should_detach = true; 2444 SetPublicState (eStateAttaching); 2445 2446 error = DoAttachToProcessWithID (attach_pid); 2447 if (error.Success()) 2448 { 2449 2450 SetNextEventAction(new Process::AttachCompletionHandler(this, attach_info.GetResumeCount())); 2451 StartPrivateStateThread(); 2452 } 2453 else 2454 { 2455 if (GetID() != LLDB_INVALID_PROCESS_ID) 2456 { 2457 SetID (LLDB_INVALID_PROCESS_ID); 2458 const char *error_string = error.AsCString(); 2459 if (error_string == NULL) 2460 error_string = "attach failed"; 2461 2462 SetExitStatus(-1, error_string); 2463 } 2464 } 2465 } 2466 } 2467 return error; 2468 } 2469 2470 //Error 2471 //Process::Attach (const char *process_name, bool wait_for_launch) 2472 //{ 2473 // m_abi_sp.reset(); 2474 // m_process_input_reader.reset(); 2475 // 2476 // // Find the process and its architecture. Make sure it matches the architecture 2477 // // of the current Target, and if not adjust it. 2478 // Error error; 2479 // 2480 // if (!wait_for_launch) 2481 // { 2482 // ProcessInstanceInfoList process_infos; 2483 // PlatformSP platform_sp (m_target.GetPlatform ()); 2484 // assert (platform_sp.get()); 2485 // 2486 // if (platform_sp) 2487 // { 2488 // ProcessInstanceInfoMatch match_info; 2489 // match_info.GetProcessInfo().SetName(process_name); 2490 // match_info.SetNameMatchType (eNameMatchEquals); 2491 // platform_sp->FindProcesses (match_info, process_infos); 2492 // if (process_infos.GetSize() > 1) 2493 // { 2494 // error.SetErrorStringWithFormat ("more than one process named %s", process_name); 2495 // } 2496 // else if (process_infos.GetSize() == 0) 2497 // { 2498 // error.SetErrorStringWithFormat ("could not find a process named %s", process_name); 2499 // } 2500 // } 2501 // else 2502 // { 2503 // error.SetErrorString ("invalid platform"); 2504 // } 2505 // } 2506 // 2507 // if (error.Success()) 2508 // { 2509 // m_dyld_ap.reset(); 2510 // m_os_ap.reset(); 2511 // 2512 // error = WillAttachToProcessWithName(process_name, wait_for_launch); 2513 // if (error.Success()) 2514 // { 2515 // SetPublicState (eStateAttaching); 2516 // error = DoAttachToProcessWithName (process_name, wait_for_launch); 2517 // if (error.Fail()) 2518 // { 2519 // if (GetID() != LLDB_INVALID_PROCESS_ID) 2520 // { 2521 // SetID (LLDB_INVALID_PROCESS_ID); 2522 // const char *error_string = error.AsCString(); 2523 // if (error_string == NULL) 2524 // error_string = "attach failed"; 2525 // 2526 // SetExitStatus(-1, error_string); 2527 // } 2528 // } 2529 // else 2530 // { 2531 // SetNextEventAction(new Process::AttachCompletionHandler(this, 0)); 2532 // StartPrivateStateThread(); 2533 // } 2534 // } 2535 // } 2536 // return error; 2537 //} 2538 2539 void 2540 Process::CompleteAttach () 2541 { 2542 // Let the process subclass figure out at much as it can about the process 2543 // before we go looking for a dynamic loader plug-in. 2544 DidAttach(); 2545 2546 // We just attached. If we have a platform, ask it for the process architecture, and if it isn't 2547 // the same as the one we've already set, switch architectures. 2548 PlatformSP platform_sp (m_target.GetPlatform ()); 2549 assert (platform_sp.get()); 2550 if (platform_sp) 2551 { 2552 ProcessInstanceInfo process_info; 2553 platform_sp->GetProcessInfo (GetID(), process_info); 2554 const ArchSpec &process_arch = process_info.GetArchitecture(); 2555 if (process_arch.IsValid() && m_target.GetArchitecture() != process_arch) 2556 m_target.SetArchitecture (process_arch); 2557 } 2558 2559 // We have completed the attach, now it is time to find the dynamic loader 2560 // plug-in 2561 m_dyld_ap.reset (DynamicLoader::FindPlugin(this, NULL)); 2562 if (m_dyld_ap.get()) 2563 m_dyld_ap->DidAttach(); 2564 2565 m_os_ap.reset (OperatingSystem::FindPlugin (this, NULL)); 2566 // Figure out which one is the executable, and set that in our target: 2567 ModuleList &modules = m_target.GetImages(); 2568 2569 size_t num_modules = modules.GetSize(); 2570 for (int i = 0; i < num_modules; i++) 2571 { 2572 ModuleSP module_sp (modules.GetModuleAtIndex(i)); 2573 if (module_sp && module_sp->IsExecutable()) 2574 { 2575 if (m_target.GetExecutableModulePointer() != module_sp.get()) 2576 m_target.SetExecutableModule (module_sp, false); 2577 break; 2578 } 2579 } 2580 } 2581 2582 Error 2583 Process::ConnectRemote (const char *remote_url) 2584 { 2585 m_abi_sp.reset(); 2586 m_process_input_reader.reset(); 2587 2588 // Find the process and its architecture. Make sure it matches the architecture 2589 // of the current Target, and if not adjust it. 2590 2591 Error error (DoConnectRemote (remote_url)); 2592 if (error.Success()) 2593 { 2594 if (GetID() != LLDB_INVALID_PROCESS_ID) 2595 { 2596 EventSP event_sp; 2597 StateType state = WaitForProcessStopPrivate(NULL, event_sp); 2598 2599 if (state == eStateStopped || state == eStateCrashed) 2600 { 2601 // If we attached and actually have a process on the other end, then 2602 // this ended up being the equivalent of an attach. 2603 CompleteAttach (); 2604 2605 // This delays passing the stopped event to listeners till 2606 // CompleteAttach gets a chance to complete... 2607 HandlePrivateEvent (event_sp); 2608 2609 } 2610 } 2611 2612 if (PrivateStateThreadIsValid ()) 2613 ResumePrivateStateThread (); 2614 else 2615 StartPrivateStateThread (); 2616 } 2617 return error; 2618 } 2619 2620 2621 Error 2622 Process::Resume () 2623 { 2624 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2625 if (log) 2626 log->Printf("Process::Resume() m_stop_id = %u, public state: %s private state: %s", 2627 m_mod_id.GetStopID(), 2628 StateAsCString(m_public_state.GetValue()), 2629 StateAsCString(m_private_state.GetValue())); 2630 2631 Error error (WillResume()); 2632 // Tell the process it is about to resume before the thread list 2633 if (error.Success()) 2634 { 2635 // Now let the thread list know we are about to resume so it 2636 // can let all of our threads know that they are about to be 2637 // resumed. Threads will each be called with 2638 // Thread::WillResume(StateType) where StateType contains the state 2639 // that they are supposed to have when the process is resumed 2640 // (suspended/running/stepping). Threads should also check 2641 // their resume signal in lldb::Thread::GetResumeSignal() 2642 // to see if they are suppoed to start back up with a signal. 2643 if (m_thread_list.WillResume()) 2644 { 2645 m_mod_id.BumpResumeID(); 2646 error = DoResume(); 2647 if (error.Success()) 2648 { 2649 DidResume(); 2650 m_thread_list.DidResume(); 2651 if (log) 2652 log->Printf ("Process thinks the process has resumed."); 2653 } 2654 } 2655 else 2656 { 2657 error.SetErrorStringWithFormat("Process::WillResume() thread list returned false after WillResume"); 2658 } 2659 } 2660 else if (log) 2661 log->Printf ("Process::WillResume() got an error \"%s\".", error.AsCString("<unknown error>")); 2662 return error; 2663 } 2664 2665 Error 2666 Process::Halt () 2667 { 2668 // Pause our private state thread so we can ensure no one else eats 2669 // the stop event out from under us. 2670 Listener halt_listener ("lldb.process.halt_listener"); 2671 HijackPrivateProcessEvents(&halt_listener); 2672 2673 EventSP event_sp; 2674 Error error (WillHalt()); 2675 2676 if (error.Success()) 2677 { 2678 2679 bool caused_stop = false; 2680 2681 // Ask the process subclass to actually halt our process 2682 error = DoHalt(caused_stop); 2683 if (error.Success()) 2684 { 2685 if (m_public_state.GetValue() == eStateAttaching) 2686 { 2687 SetExitStatus(SIGKILL, "Cancelled async attach."); 2688 Destroy (); 2689 } 2690 else 2691 { 2692 // If "caused_stop" is true, then DoHalt stopped the process. If 2693 // "caused_stop" is false, the process was already stopped. 2694 // If the DoHalt caused the process to stop, then we want to catch 2695 // this event and set the interrupted bool to true before we pass 2696 // this along so clients know that the process was interrupted by 2697 // a halt command. 2698 if (caused_stop) 2699 { 2700 // Wait for 1 second for the process to stop. 2701 TimeValue timeout_time; 2702 timeout_time = TimeValue::Now(); 2703 timeout_time.OffsetWithSeconds(1); 2704 bool got_event = halt_listener.WaitForEvent (&timeout_time, event_sp); 2705 StateType state = ProcessEventData::GetStateFromEvent(event_sp.get()); 2706 2707 if (!got_event || state == eStateInvalid) 2708 { 2709 // We timeout out and didn't get a stop event... 2710 error.SetErrorStringWithFormat ("Halt timed out. State = %s", StateAsCString(GetState())); 2711 } 2712 else 2713 { 2714 if (StateIsStoppedState (state, false)) 2715 { 2716 // We caused the process to interrupt itself, so mark this 2717 // as such in the stop event so clients can tell an interrupted 2718 // process from a natural stop 2719 ProcessEventData::SetInterruptedInEvent (event_sp.get(), true); 2720 } 2721 else 2722 { 2723 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2724 if (log) 2725 log->Printf("Process::Halt() failed to stop, state is: %s", StateAsCString(state)); 2726 error.SetErrorString ("Did not get stopped event after halt."); 2727 } 2728 } 2729 } 2730 DidHalt(); 2731 } 2732 } 2733 } 2734 // Resume our private state thread before we post the event (if any) 2735 RestorePrivateProcessEvents(); 2736 2737 // Post any event we might have consumed. If all goes well, we will have 2738 // stopped the process, intercepted the event and set the interrupted 2739 // bool in the event. Post it to the private event queue and that will end up 2740 // correctly setting the state. 2741 if (event_sp) 2742 m_private_state_broadcaster.BroadcastEvent(event_sp); 2743 2744 return error; 2745 } 2746 2747 Error 2748 Process::Detach () 2749 { 2750 Error error (WillDetach()); 2751 2752 if (error.Success()) 2753 { 2754 DisableAllBreakpointSites(); 2755 error = DoDetach(); 2756 if (error.Success()) 2757 { 2758 DidDetach(); 2759 StopPrivateStateThread(); 2760 } 2761 } 2762 return error; 2763 } 2764 2765 Error 2766 Process::Destroy () 2767 { 2768 Error error (WillDestroy()); 2769 if (error.Success()) 2770 { 2771 DisableAllBreakpointSites(); 2772 error = DoDestroy(); 2773 if (error.Success()) 2774 { 2775 DidDestroy(); 2776 StopPrivateStateThread(); 2777 } 2778 m_stdio_communication.StopReadThread(); 2779 m_stdio_communication.Disconnect(); 2780 if (m_process_input_reader && m_process_input_reader->IsActive()) 2781 m_target.GetDebugger().PopInputReader (m_process_input_reader); 2782 if (m_process_input_reader) 2783 m_process_input_reader.reset(); 2784 } 2785 return error; 2786 } 2787 2788 Error 2789 Process::Signal (int signal) 2790 { 2791 Error error (WillSignal()); 2792 if (error.Success()) 2793 { 2794 error = DoSignal(signal); 2795 if (error.Success()) 2796 DidSignal(); 2797 } 2798 return error; 2799 } 2800 2801 lldb::ByteOrder 2802 Process::GetByteOrder () const 2803 { 2804 return m_target.GetArchitecture().GetByteOrder(); 2805 } 2806 2807 uint32_t 2808 Process::GetAddressByteSize () const 2809 { 2810 return m_target.GetArchitecture().GetAddressByteSize(); 2811 } 2812 2813 2814 bool 2815 Process::ShouldBroadcastEvent (Event *event_ptr) 2816 { 2817 const StateType state = Process::ProcessEventData::GetStateFromEvent (event_ptr); 2818 bool return_value = true; 2819 LogSP log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS)); 2820 2821 switch (state) 2822 { 2823 case eStateConnected: 2824 case eStateAttaching: 2825 case eStateLaunching: 2826 case eStateDetached: 2827 case eStateExited: 2828 case eStateUnloaded: 2829 // These events indicate changes in the state of the debugging session, always report them. 2830 return_value = true; 2831 break; 2832 case eStateInvalid: 2833 // We stopped for no apparent reason, don't report it. 2834 return_value = false; 2835 break; 2836 case eStateRunning: 2837 case eStateStepping: 2838 // If we've started the target running, we handle the cases where we 2839 // are already running and where there is a transition from stopped to 2840 // running differently. 2841 // running -> running: Automatically suppress extra running events 2842 // stopped -> running: Report except when there is one or more no votes 2843 // and no yes votes. 2844 SynchronouslyNotifyStateChanged (state); 2845 switch (m_public_state.GetValue()) 2846 { 2847 case eStateRunning: 2848 case eStateStepping: 2849 // We always suppress multiple runnings with no PUBLIC stop in between. 2850 return_value = false; 2851 break; 2852 default: 2853 // TODO: make this work correctly. For now always report 2854 // run if we aren't running so we don't miss any runnning 2855 // events. If I run the lldb/test/thread/a.out file and 2856 // break at main.cpp:58, run and hit the breakpoints on 2857 // multiple threads, then somehow during the stepping over 2858 // of all breakpoints no run gets reported. 2859 return_value = true; 2860 2861 // This is a transition from stop to run. 2862 switch (m_thread_list.ShouldReportRun (event_ptr)) 2863 { 2864 case eVoteYes: 2865 case eVoteNoOpinion: 2866 return_value = true; 2867 break; 2868 case eVoteNo: 2869 return_value = false; 2870 break; 2871 } 2872 break; 2873 } 2874 break; 2875 case eStateStopped: 2876 case eStateCrashed: 2877 case eStateSuspended: 2878 { 2879 // We've stopped. First see if we're going to restart the target. 2880 // If we are going to stop, then we always broadcast the event. 2881 // If we aren't going to stop, let the thread plans decide if we're going to report this event. 2882 // If no thread has an opinion, we don't report it. 2883 if (ProcessEventData::GetInterruptedFromEvent (event_ptr)) 2884 { 2885 if (log) 2886 log->Printf ("Process::ShouldBroadcastEvent (%p) stopped due to an interrupt, state: %s", event_ptr, StateAsCString(state)); 2887 return true; 2888 } 2889 else 2890 { 2891 RefreshStateAfterStop (); 2892 2893 if (m_thread_list.ShouldStop (event_ptr) == false) 2894 { 2895 switch (m_thread_list.ShouldReportStop (event_ptr)) 2896 { 2897 case eVoteYes: 2898 Process::ProcessEventData::SetRestartedInEvent (event_ptr, true); 2899 // Intentional fall-through here. 2900 case eVoteNoOpinion: 2901 case eVoteNo: 2902 return_value = false; 2903 break; 2904 } 2905 2906 if (log) 2907 log->Printf ("Process::ShouldBroadcastEvent (%p) Restarting process from state: %s", event_ptr, StateAsCString(state)); 2908 Resume (); 2909 } 2910 else 2911 { 2912 return_value = true; 2913 SynchronouslyNotifyStateChanged (state); 2914 } 2915 } 2916 } 2917 } 2918 2919 if (log) 2920 log->Printf ("Process::ShouldBroadcastEvent (%p) => %s - %s", event_ptr, StateAsCString(state), return_value ? "YES" : "NO"); 2921 return return_value; 2922 } 2923 2924 2925 bool 2926 Process::StartPrivateStateThread () 2927 { 2928 LogSP log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS)); 2929 2930 bool already_running = PrivateStateThreadIsValid (); 2931 if (log) 2932 log->Printf ("Process::%s()%s ", __FUNCTION__, already_running ? " already running" : " starting private state thread"); 2933 2934 if (already_running) 2935 return true; 2936 2937 // Create a thread that watches our internal state and controls which 2938 // events make it to clients (into the DCProcess event queue). 2939 char thread_name[1024]; 2940 snprintf(thread_name, sizeof(thread_name), "<lldb.process.internal-state(pid=%llu)>", GetID()); 2941 m_private_state_thread = Host::ThreadCreate (thread_name, Process::PrivateStateThread, this, NULL); 2942 return IS_VALID_LLDB_HOST_THREAD(m_private_state_thread); 2943 } 2944 2945 void 2946 Process::PausePrivateStateThread () 2947 { 2948 ControlPrivateStateThread (eBroadcastInternalStateControlPause); 2949 } 2950 2951 void 2952 Process::ResumePrivateStateThread () 2953 { 2954 ControlPrivateStateThread (eBroadcastInternalStateControlResume); 2955 } 2956 2957 void 2958 Process::StopPrivateStateThread () 2959 { 2960 if (PrivateStateThreadIsValid ()) 2961 ControlPrivateStateThread (eBroadcastInternalStateControlStop); 2962 } 2963 2964 void 2965 Process::ControlPrivateStateThread (uint32_t signal) 2966 { 2967 LogSP log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS)); 2968 2969 assert (signal == eBroadcastInternalStateControlStop || 2970 signal == eBroadcastInternalStateControlPause || 2971 signal == eBroadcastInternalStateControlResume); 2972 2973 if (log) 2974 log->Printf ("Process::%s (signal = %d)", __FUNCTION__, signal); 2975 2976 // Signal the private state thread. First we should copy this is case the 2977 // thread starts exiting since the private state thread will NULL this out 2978 // when it exits 2979 const lldb::thread_t private_state_thread = m_private_state_thread; 2980 if (IS_VALID_LLDB_HOST_THREAD(private_state_thread)) 2981 { 2982 TimeValue timeout_time; 2983 bool timed_out; 2984 2985 m_private_state_control_broadcaster.BroadcastEvent (signal, NULL); 2986 2987 timeout_time = TimeValue::Now(); 2988 timeout_time.OffsetWithSeconds(2); 2989 m_private_state_control_wait.WaitForValueEqualTo (true, &timeout_time, &timed_out); 2990 m_private_state_control_wait.SetValue (false, eBroadcastNever); 2991 2992 if (signal == eBroadcastInternalStateControlStop) 2993 { 2994 if (timed_out) 2995 Host::ThreadCancel (private_state_thread, NULL); 2996 2997 thread_result_t result = NULL; 2998 Host::ThreadJoin (private_state_thread, &result, NULL); 2999 m_private_state_thread = LLDB_INVALID_HOST_THREAD; 3000 } 3001 } 3002 } 3003 3004 void 3005 Process::HandlePrivateEvent (EventSP &event_sp) 3006 { 3007 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3008 3009 const StateType new_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 3010 3011 // First check to see if anybody wants a shot at this event: 3012 if (m_next_event_action_ap.get() != NULL) 3013 { 3014 NextEventAction::EventActionResult action_result = m_next_event_action_ap->PerformAction(event_sp); 3015 switch (action_result) 3016 { 3017 case NextEventAction::eEventActionSuccess: 3018 SetNextEventAction(NULL); 3019 break; 3020 3021 case NextEventAction::eEventActionRetry: 3022 break; 3023 3024 case NextEventAction::eEventActionExit: 3025 // Handle Exiting Here. If we already got an exited event, 3026 // we should just propagate it. Otherwise, swallow this event, 3027 // and set our state to exit so the next event will kill us. 3028 if (new_state != eStateExited) 3029 { 3030 // FIXME: should cons up an exited event, and discard this one. 3031 SetExitStatus(0, m_next_event_action_ap->GetExitString()); 3032 SetNextEventAction(NULL); 3033 return; 3034 } 3035 SetNextEventAction(NULL); 3036 break; 3037 } 3038 } 3039 3040 // See if we should broadcast this state to external clients? 3041 const bool should_broadcast = ShouldBroadcastEvent (event_sp.get()); 3042 3043 if (should_broadcast) 3044 { 3045 if (log) 3046 { 3047 log->Printf ("Process::%s (pid = %llu) broadcasting new state %s (old state %s) to %s", 3048 __FUNCTION__, 3049 GetID(), 3050 StateAsCString(new_state), 3051 StateAsCString (GetState ()), 3052 IsHijackedForEvent(eBroadcastBitStateChanged) ? "hijacked" : "public"); 3053 } 3054 Process::ProcessEventData::SetUpdateStateOnRemoval(event_sp.get()); 3055 if (StateIsRunningState (new_state)) 3056 PushProcessInputReader (); 3057 else 3058 PopProcessInputReader (); 3059 3060 BroadcastEvent (event_sp); 3061 } 3062 else 3063 { 3064 if (log) 3065 { 3066 log->Printf ("Process::%s (pid = %llu) suppressing state %s (old state %s): should_broadcast == false", 3067 __FUNCTION__, 3068 GetID(), 3069 StateAsCString(new_state), 3070 StateAsCString (GetState ())); 3071 } 3072 } 3073 } 3074 3075 void * 3076 Process::PrivateStateThread (void *arg) 3077 { 3078 Process *proc = static_cast<Process*> (arg); 3079 void *result = proc->RunPrivateStateThread (); 3080 return result; 3081 } 3082 3083 void * 3084 Process::RunPrivateStateThread () 3085 { 3086 bool control_only = false; 3087 m_private_state_control_wait.SetValue (false, eBroadcastNever); 3088 3089 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3090 if (log) 3091 log->Printf ("Process::%s (arg = %p, pid = %llu) thread starting...", __FUNCTION__, this, GetID()); 3092 3093 bool exit_now = false; 3094 while (!exit_now) 3095 { 3096 EventSP event_sp; 3097 WaitForEventsPrivate (NULL, event_sp, control_only); 3098 if (event_sp->BroadcasterIs(&m_private_state_control_broadcaster)) 3099 { 3100 switch (event_sp->GetType()) 3101 { 3102 case eBroadcastInternalStateControlStop: 3103 exit_now = true; 3104 continue; // Go to next loop iteration so we exit without 3105 break; // doing any internal state managment below 3106 3107 case eBroadcastInternalStateControlPause: 3108 control_only = true; 3109 break; 3110 3111 case eBroadcastInternalStateControlResume: 3112 control_only = false; 3113 break; 3114 } 3115 3116 if (log) 3117 log->Printf ("Process::%s (arg = %p, pid = %llu) got a control event: %d", __FUNCTION__, this, GetID(), event_sp->GetType()); 3118 3119 m_private_state_control_wait.SetValue (true, eBroadcastAlways); 3120 continue; 3121 } 3122 3123 3124 const StateType internal_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 3125 3126 if (internal_state != eStateInvalid) 3127 { 3128 HandlePrivateEvent (event_sp); 3129 } 3130 3131 if (internal_state == eStateInvalid || 3132 internal_state == eStateExited || 3133 internal_state == eStateDetached ) 3134 { 3135 if (log) 3136 log->Printf ("Process::%s (arg = %p, pid = %llu) about to exit with internal state %s...", __FUNCTION__, this, GetID(), StateAsCString(internal_state)); 3137 3138 break; 3139 } 3140 } 3141 3142 // Verify log is still enabled before attempting to write to it... 3143 if (log) 3144 log->Printf ("Process::%s (arg = %p, pid = %llu) thread exiting...", __FUNCTION__, this, GetID()); 3145 3146 m_private_state_control_wait.SetValue (true, eBroadcastAlways); 3147 m_private_state_thread = LLDB_INVALID_HOST_THREAD; 3148 return NULL; 3149 } 3150 3151 //------------------------------------------------------------------ 3152 // Process Event Data 3153 //------------------------------------------------------------------ 3154 3155 Process::ProcessEventData::ProcessEventData () : 3156 EventData (), 3157 m_process_sp (), 3158 m_state (eStateInvalid), 3159 m_restarted (false), 3160 m_update_state (0), 3161 m_interrupted (false) 3162 { 3163 } 3164 3165 Process::ProcessEventData::ProcessEventData (const ProcessSP &process_sp, StateType state) : 3166 EventData (), 3167 m_process_sp (process_sp), 3168 m_state (state), 3169 m_restarted (false), 3170 m_update_state (0), 3171 m_interrupted (false) 3172 { 3173 } 3174 3175 Process::ProcessEventData::~ProcessEventData() 3176 { 3177 } 3178 3179 const ConstString & 3180 Process::ProcessEventData::GetFlavorString () 3181 { 3182 static ConstString g_flavor ("Process::ProcessEventData"); 3183 return g_flavor; 3184 } 3185 3186 const ConstString & 3187 Process::ProcessEventData::GetFlavor () const 3188 { 3189 return ProcessEventData::GetFlavorString (); 3190 } 3191 3192 void 3193 Process::ProcessEventData::DoOnRemoval (Event *event_ptr) 3194 { 3195 // This function gets called twice for each event, once when the event gets pulled 3196 // off of the private process event queue, and then any number of times, first when it gets pulled off of 3197 // the public event queue, then other times when we're pretending that this is where we stopped at the 3198 // end of expression evaluation. m_update_state is used to distinguish these 3199 // three cases; it is 0 when we're just pulling it off for private handling, 3200 // and > 1 for expression evaluation, and we don't want to do the breakpoint command handling then. 3201 3202 if (m_update_state != 1) 3203 return; 3204 3205 m_process_sp->SetPublicState (m_state); 3206 3207 // If we're stopped and haven't restarted, then do the breakpoint commands here: 3208 if (m_state == eStateStopped && ! m_restarted) 3209 { 3210 ThreadList &curr_thread_list = m_process_sp->GetThreadList(); 3211 int num_threads = curr_thread_list.GetSize(); 3212 int idx; 3213 3214 // The actions might change one of the thread's stop_info's opinions about whether we should 3215 // stop the process, so we need to query that as we go. 3216 3217 // One other complication here, is that we try to catch any case where the target has run (except for expressions) 3218 // and immediately exit, but if we get that wrong (which is possible) then the thread list might have changed, and 3219 // that would cause our iteration here to crash. We could make a copy of the thread list, but we'd really like 3220 // to also know if it has changed at all, so we make up a vector of the thread ID's and check what we get back 3221 // against this list & bag out if anything differs. 3222 std::vector<lldb::tid_t> thread_index_array(num_threads); 3223 for (idx = 0; idx < num_threads; ++idx) 3224 thread_index_array[idx] = curr_thread_list.GetThreadAtIndex(idx)->GetIndexID(); 3225 3226 bool still_should_stop = true; 3227 3228 for (idx = 0; idx < num_threads; ++idx) 3229 { 3230 curr_thread_list = m_process_sp->GetThreadList(); 3231 if (curr_thread_list.GetSize() != num_threads) 3232 { 3233 lldb::LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); 3234 log->Printf("Number of threads changed from %d to %d while processing event.", num_threads, curr_thread_list.GetSize()); 3235 break; 3236 } 3237 3238 lldb::ThreadSP thread_sp = curr_thread_list.GetThreadAtIndex(idx); 3239 3240 if (thread_sp->GetIndexID() != thread_index_array[idx]) 3241 { 3242 lldb::LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); 3243 log->Printf("The thread at position %d changed from %d to %d while processing event.", 3244 idx, 3245 thread_index_array[idx], 3246 thread_sp->GetIndexID()); 3247 break; 3248 } 3249 3250 StopInfoSP stop_info_sp = thread_sp->GetStopInfo (); 3251 if (stop_info_sp) 3252 { 3253 stop_info_sp->PerformAction(event_ptr); 3254 // The stop action might restart the target. If it does, then we want to mark that in the 3255 // event so that whoever is receiving it will know to wait for the running event and reflect 3256 // that state appropriately. 3257 // We also need to stop processing actions, since they aren't expecting the target to be running. 3258 3259 // FIXME: we might have run. 3260 if (stop_info_sp->HasTargetRunSinceMe()) 3261 { 3262 SetRestarted (true); 3263 break; 3264 } 3265 else if (!stop_info_sp->ShouldStop(event_ptr)) 3266 { 3267 still_should_stop = false; 3268 } 3269 } 3270 } 3271 3272 3273 if (m_process_sp->GetPrivateState() != eStateRunning) 3274 { 3275 if (!still_should_stop) 3276 { 3277 // We've been asked to continue, so do that here. 3278 SetRestarted(true); 3279 m_process_sp->Resume(); 3280 } 3281 else 3282 { 3283 // If we didn't restart, run the Stop Hooks here: 3284 // They might also restart the target, so watch for that. 3285 m_process_sp->GetTarget().RunStopHooks(); 3286 if (m_process_sp->GetPrivateState() == eStateRunning) 3287 SetRestarted(true); 3288 } 3289 } 3290 3291 } 3292 } 3293 3294 void 3295 Process::ProcessEventData::Dump (Stream *s) const 3296 { 3297 if (m_process_sp) 3298 s->Printf(" process = %p (pid = %llu), ", m_process_sp.get(), m_process_sp->GetID()); 3299 3300 s->Printf("state = %s", StateAsCString(GetState())); 3301 } 3302 3303 const Process::ProcessEventData * 3304 Process::ProcessEventData::GetEventDataFromEvent (const Event *event_ptr) 3305 { 3306 if (event_ptr) 3307 { 3308 const EventData *event_data = event_ptr->GetData(); 3309 if (event_data && event_data->GetFlavor() == ProcessEventData::GetFlavorString()) 3310 return static_cast <const ProcessEventData *> (event_ptr->GetData()); 3311 } 3312 return NULL; 3313 } 3314 3315 ProcessSP 3316 Process::ProcessEventData::GetProcessFromEvent (const Event *event_ptr) 3317 { 3318 ProcessSP process_sp; 3319 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3320 if (data) 3321 process_sp = data->GetProcessSP(); 3322 return process_sp; 3323 } 3324 3325 StateType 3326 Process::ProcessEventData::GetStateFromEvent (const Event *event_ptr) 3327 { 3328 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3329 if (data == NULL) 3330 return eStateInvalid; 3331 else 3332 return data->GetState(); 3333 } 3334 3335 bool 3336 Process::ProcessEventData::GetRestartedFromEvent (const Event *event_ptr) 3337 { 3338 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3339 if (data == NULL) 3340 return false; 3341 else 3342 return data->GetRestarted(); 3343 } 3344 3345 void 3346 Process::ProcessEventData::SetRestartedInEvent (Event *event_ptr, bool new_value) 3347 { 3348 ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); 3349 if (data != NULL) 3350 data->SetRestarted(new_value); 3351 } 3352 3353 bool 3354 Process::ProcessEventData::GetInterruptedFromEvent (const Event *event_ptr) 3355 { 3356 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3357 if (data == NULL) 3358 return false; 3359 else 3360 return data->GetInterrupted (); 3361 } 3362 3363 void 3364 Process::ProcessEventData::SetInterruptedInEvent (Event *event_ptr, bool new_value) 3365 { 3366 ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); 3367 if (data != NULL) 3368 data->SetInterrupted(new_value); 3369 } 3370 3371 bool 3372 Process::ProcessEventData::SetUpdateStateOnRemoval (Event *event_ptr) 3373 { 3374 ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); 3375 if (data) 3376 { 3377 data->SetUpdateStateOnRemoval(); 3378 return true; 3379 } 3380 return false; 3381 } 3382 3383 void 3384 Process::CalculateExecutionContext (ExecutionContext &exe_ctx) 3385 { 3386 exe_ctx.SetTargetPtr (&m_target); 3387 exe_ctx.SetProcessPtr (this); 3388 exe_ctx.SetThreadPtr(NULL); 3389 exe_ctx.SetFramePtr (NULL); 3390 } 3391 3392 lldb::ProcessSP 3393 Process::GetSP () 3394 { 3395 return GetTarget().GetProcessSP(); 3396 } 3397 3398 //uint32_t 3399 //Process::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) 3400 //{ 3401 // return 0; 3402 //} 3403 // 3404 //ArchSpec 3405 //Process::GetArchSpecForExistingProcess (lldb::pid_t pid) 3406 //{ 3407 // return Host::GetArchSpecForExistingProcess (pid); 3408 //} 3409 // 3410 //ArchSpec 3411 //Process::GetArchSpecForExistingProcess (const char *process_name) 3412 //{ 3413 // return Host::GetArchSpecForExistingProcess (process_name); 3414 //} 3415 // 3416 void 3417 Process::AppendSTDOUT (const char * s, size_t len) 3418 { 3419 Mutex::Locker locker (m_stdio_communication_mutex); 3420 m_stdout_data.append (s, len); 3421 BroadcastEventIfUnique (eBroadcastBitSTDOUT, new ProcessEventData (GetTarget().GetProcessSP(), GetState())); 3422 } 3423 3424 void 3425 Process::AppendSTDERR (const char * s, size_t len) 3426 { 3427 Mutex::Locker locker (m_stdio_communication_mutex); 3428 m_stderr_data.append (s, len); 3429 BroadcastEventIfUnique (eBroadcastBitSTDERR, new ProcessEventData (GetTarget().GetProcessSP(), GetState())); 3430 } 3431 3432 //------------------------------------------------------------------ 3433 // Process STDIO 3434 //------------------------------------------------------------------ 3435 3436 size_t 3437 Process::GetSTDOUT (char *buf, size_t buf_size, Error &error) 3438 { 3439 Mutex::Locker locker(m_stdio_communication_mutex); 3440 size_t bytes_available = m_stdout_data.size(); 3441 if (bytes_available > 0) 3442 { 3443 LogSP log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3444 if (log) 3445 log->Printf ("Process::GetSTDOUT (buf = %p, size = %zu)", buf, buf_size); 3446 if (bytes_available > buf_size) 3447 { 3448 memcpy(buf, m_stdout_data.c_str(), buf_size); 3449 m_stdout_data.erase(0, buf_size); 3450 bytes_available = buf_size; 3451 } 3452 else 3453 { 3454 memcpy(buf, m_stdout_data.c_str(), bytes_available); 3455 m_stdout_data.clear(); 3456 } 3457 } 3458 return bytes_available; 3459 } 3460 3461 3462 size_t 3463 Process::GetSTDERR (char *buf, size_t buf_size, Error &error) 3464 { 3465 Mutex::Locker locker(m_stdio_communication_mutex); 3466 size_t bytes_available = m_stderr_data.size(); 3467 if (bytes_available > 0) 3468 { 3469 LogSP log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3470 if (log) 3471 log->Printf ("Process::GetSTDERR (buf = %p, size = %zu)", buf, buf_size); 3472 if (bytes_available > buf_size) 3473 { 3474 memcpy(buf, m_stderr_data.c_str(), buf_size); 3475 m_stderr_data.erase(0, buf_size); 3476 bytes_available = buf_size; 3477 } 3478 else 3479 { 3480 memcpy(buf, m_stderr_data.c_str(), bytes_available); 3481 m_stderr_data.clear(); 3482 } 3483 } 3484 return bytes_available; 3485 } 3486 3487 void 3488 Process::STDIOReadThreadBytesReceived (void *baton, const void *src, size_t src_len) 3489 { 3490 Process *process = (Process *) baton; 3491 process->AppendSTDOUT (static_cast<const char *>(src), src_len); 3492 } 3493 3494 size_t 3495 Process::ProcessInputReaderCallback (void *baton, 3496 InputReader &reader, 3497 lldb::InputReaderAction notification, 3498 const char *bytes, 3499 size_t bytes_len) 3500 { 3501 Process *process = (Process *) baton; 3502 3503 switch (notification) 3504 { 3505 case eInputReaderActivate: 3506 break; 3507 3508 case eInputReaderDeactivate: 3509 break; 3510 3511 case eInputReaderReactivate: 3512 break; 3513 3514 case eInputReaderAsynchronousOutputWritten: 3515 break; 3516 3517 case eInputReaderGotToken: 3518 { 3519 Error error; 3520 process->PutSTDIN (bytes, bytes_len, error); 3521 } 3522 break; 3523 3524 case eInputReaderInterrupt: 3525 process->Halt (); 3526 break; 3527 3528 case eInputReaderEndOfFile: 3529 process->AppendSTDOUT ("^D", 2); 3530 break; 3531 3532 case eInputReaderDone: 3533 break; 3534 3535 } 3536 3537 return bytes_len; 3538 } 3539 3540 void 3541 Process::ResetProcessInputReader () 3542 { 3543 m_process_input_reader.reset(); 3544 } 3545 3546 void 3547 Process::SetSTDIOFileDescriptor (int file_descriptor) 3548 { 3549 // First set up the Read Thread for reading/handling process I/O 3550 3551 std::auto_ptr<ConnectionFileDescriptor> conn_ap (new ConnectionFileDescriptor (file_descriptor, true)); 3552 3553 if (conn_ap.get()) 3554 { 3555 m_stdio_communication.SetConnection (conn_ap.release()); 3556 if (m_stdio_communication.IsConnected()) 3557 { 3558 m_stdio_communication.SetReadThreadBytesReceivedCallback (STDIOReadThreadBytesReceived, this); 3559 m_stdio_communication.StartReadThread(); 3560 3561 // Now read thread is set up, set up input reader. 3562 3563 if (!m_process_input_reader.get()) 3564 { 3565 m_process_input_reader.reset (new InputReader(m_target.GetDebugger())); 3566 Error err (m_process_input_reader->Initialize (Process::ProcessInputReaderCallback, 3567 this, 3568 eInputReaderGranularityByte, 3569 NULL, 3570 NULL, 3571 false)); 3572 3573 if (err.Fail()) 3574 m_process_input_reader.reset(); 3575 } 3576 } 3577 } 3578 } 3579 3580 void 3581 Process::PushProcessInputReader () 3582 { 3583 if (m_process_input_reader && !m_process_input_reader->IsActive()) 3584 m_target.GetDebugger().PushInputReader (m_process_input_reader); 3585 } 3586 3587 void 3588 Process::PopProcessInputReader () 3589 { 3590 if (m_process_input_reader && m_process_input_reader->IsActive()) 3591 m_target.GetDebugger().PopInputReader (m_process_input_reader); 3592 } 3593 3594 // The process needs to know about installed plug-ins 3595 void 3596 Process::SettingsInitialize () 3597 { 3598 static std::vector<OptionEnumValueElement> g_plugins; 3599 3600 int i=0; 3601 const char *name; 3602 OptionEnumValueElement option_enum; 3603 while ((name = PluginManager::GetProcessPluginNameAtIndex (i)) != NULL) 3604 { 3605 if (name) 3606 { 3607 option_enum.value = i; 3608 option_enum.string_value = name; 3609 option_enum.usage = PluginManager::GetProcessPluginDescriptionAtIndex (i); 3610 g_plugins.push_back (option_enum); 3611 } 3612 ++i; 3613 } 3614 option_enum.value = 0; 3615 option_enum.string_value = NULL; 3616 option_enum.usage = NULL; 3617 g_plugins.push_back (option_enum); 3618 3619 for (i=0; (name = SettingsController::instance_settings_table[i].var_name); ++i) 3620 { 3621 if (::strcmp (name, "plugin") == 0) 3622 { 3623 SettingsController::instance_settings_table[i].enum_values = &g_plugins[0]; 3624 break; 3625 } 3626 } 3627 UserSettingsControllerSP &usc = GetSettingsController(); 3628 usc.reset (new SettingsController); 3629 UserSettingsController::InitializeSettingsController (usc, 3630 SettingsController::global_settings_table, 3631 SettingsController::instance_settings_table); 3632 3633 // Now call SettingsInitialize() for each 'child' of Process settings 3634 Thread::SettingsInitialize (); 3635 } 3636 3637 void 3638 Process::SettingsTerminate () 3639 { 3640 // Must call SettingsTerminate() on each 'child' of Process settings before terminating Process settings. 3641 3642 Thread::SettingsTerminate (); 3643 3644 // Now terminate Process Settings. 3645 3646 UserSettingsControllerSP &usc = GetSettingsController(); 3647 UserSettingsController::FinalizeSettingsController (usc); 3648 usc.reset(); 3649 } 3650 3651 UserSettingsControllerSP & 3652 Process::GetSettingsController () 3653 { 3654 static UserSettingsControllerSP g_settings_controller; 3655 return g_settings_controller; 3656 } 3657 3658 void 3659 Process::UpdateInstanceName () 3660 { 3661 Module *module = GetTarget().GetExecutableModulePointer(); 3662 if (module) 3663 { 3664 StreamString sstr; 3665 sstr.Printf ("%s", module->GetFileSpec().GetFilename().AsCString()); 3666 3667 GetSettingsController()->RenameInstanceSettings (GetInstanceName().AsCString(), 3668 sstr.GetData()); 3669 } 3670 } 3671 3672 ExecutionResults 3673 Process::RunThreadPlan (ExecutionContext &exe_ctx, 3674 lldb::ThreadPlanSP &thread_plan_sp, 3675 bool stop_others, 3676 bool try_all_threads, 3677 bool discard_on_error, 3678 uint32_t single_thread_timeout_usec, 3679 Stream &errors) 3680 { 3681 ExecutionResults return_value = eExecutionSetupError; 3682 3683 if (thread_plan_sp.get() == NULL) 3684 { 3685 errors.Printf("RunThreadPlan called with empty thread plan."); 3686 return eExecutionSetupError; 3687 } 3688 3689 if (exe_ctx.GetProcessPtr() != this) 3690 { 3691 errors.Printf("RunThreadPlan called on wrong process."); 3692 return eExecutionSetupError; 3693 } 3694 3695 Thread *thread = exe_ctx.GetThreadPtr(); 3696 if (thread == NULL) 3697 { 3698 errors.Printf("RunThreadPlan called with invalid thread."); 3699 return eExecutionSetupError; 3700 } 3701 3702 // We rely on the thread plan we are running returning "PlanCompleted" if when it successfully completes. 3703 // For that to be true the plan can't be private - since private plans suppress themselves in the 3704 // GetCompletedPlan call. 3705 3706 bool orig_plan_private = thread_plan_sp->GetPrivate(); 3707 thread_plan_sp->SetPrivate(false); 3708 3709 if (m_private_state.GetValue() != eStateStopped) 3710 { 3711 errors.Printf ("RunThreadPlan called while the private state was not stopped."); 3712 return eExecutionSetupError; 3713 } 3714 3715 // Save the thread & frame from the exe_ctx for restoration after we run 3716 const uint32_t thread_idx_id = thread->GetIndexID(); 3717 StackID ctx_frame_id = thread->GetSelectedFrame()->GetStackID(); 3718 3719 // N.B. Running the target may unset the currently selected thread and frame. We don't want to do that either, 3720 // so we should arrange to reset them as well. 3721 3722 lldb::ThreadSP selected_thread_sp = GetThreadList().GetSelectedThread(); 3723 3724 uint32_t selected_tid; 3725 StackID selected_stack_id; 3726 if (selected_thread_sp) 3727 { 3728 selected_tid = selected_thread_sp->GetIndexID(); 3729 selected_stack_id = selected_thread_sp->GetSelectedFrame()->GetStackID(); 3730 } 3731 else 3732 { 3733 selected_tid = LLDB_INVALID_THREAD_ID; 3734 } 3735 3736 thread->QueueThreadPlan(thread_plan_sp, true); 3737 3738 Listener listener("lldb.process.listener.run-thread-plan"); 3739 3740 // This process event hijacker Hijacks the Public events and its destructor makes sure that the process events get 3741 // restored on exit to the function. 3742 3743 ProcessEventHijacker run_thread_plan_hijacker (*this, &listener); 3744 3745 lldb::LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); 3746 if (log) 3747 { 3748 StreamString s; 3749 thread_plan_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); 3750 log->Printf ("Process::RunThreadPlan(): Resuming thread %u - 0x%4.4llx to run thread plan \"%s\".", 3751 thread->GetIndexID(), 3752 thread->GetID(), 3753 s.GetData()); 3754 } 3755 3756 bool got_event; 3757 lldb::EventSP event_sp; 3758 lldb::StateType stop_state = lldb::eStateInvalid; 3759 3760 TimeValue* timeout_ptr = NULL; 3761 TimeValue real_timeout; 3762 3763 bool first_timeout = true; 3764 bool do_resume = true; 3765 3766 while (1) 3767 { 3768 // We usually want to resume the process if we get to the top of the loop. 3769 // The only exception is if we get two running events with no intervening 3770 // stop, which can happen, we will just wait for then next stop event. 3771 3772 if (do_resume) 3773 { 3774 // Do the initial resume and wait for the running event before going further. 3775 3776 Error resume_error = Resume (); 3777 if (!resume_error.Success()) 3778 { 3779 errors.Printf("Error resuming inferior: \"%s\".\n", resume_error.AsCString()); 3780 return_value = eExecutionSetupError; 3781 break; 3782 } 3783 3784 real_timeout = TimeValue::Now(); 3785 real_timeout.OffsetWithMicroSeconds(500000); 3786 timeout_ptr = &real_timeout; 3787 3788 got_event = listener.WaitForEvent(NULL, event_sp); 3789 if (!got_event) 3790 { 3791 if (log) 3792 log->PutCString("Didn't get any event after initial resume, exiting."); 3793 3794 errors.Printf("Didn't get any event after initial resume, exiting."); 3795 return_value = eExecutionSetupError; 3796 break; 3797 } 3798 3799 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 3800 if (stop_state != eStateRunning) 3801 { 3802 if (log) 3803 log->Printf("Didn't get running event after initial resume, got %s instead.", StateAsCString(stop_state)); 3804 3805 errors.Printf("Didn't get running event after initial resume, got %s instead.", StateAsCString(stop_state)); 3806 return_value = eExecutionSetupError; 3807 break; 3808 } 3809 3810 if (log) 3811 log->PutCString ("Resuming succeeded."); 3812 // We need to call the function synchronously, so spin waiting for it to return. 3813 // If we get interrupted while executing, we're going to lose our context, and 3814 // won't be able to gather the result at this point. 3815 // We set the timeout AFTER the resume, since the resume takes some time and we 3816 // don't want to charge that to the timeout. 3817 3818 if (single_thread_timeout_usec != 0) 3819 { 3820 real_timeout = TimeValue::Now(); 3821 if (first_timeout) 3822 real_timeout.OffsetWithMicroSeconds(single_thread_timeout_usec); 3823 else 3824 real_timeout.OffsetWithSeconds(10); 3825 3826 timeout_ptr = &real_timeout; 3827 } 3828 } 3829 else 3830 { 3831 if (log) 3832 log->PutCString ("Handled an extra running event."); 3833 do_resume = true; 3834 } 3835 3836 // Now wait for the process to stop again: 3837 stop_state = lldb::eStateInvalid; 3838 event_sp.reset(); 3839 got_event = listener.WaitForEvent (timeout_ptr, event_sp); 3840 3841 if (got_event) 3842 { 3843 if (event_sp.get()) 3844 { 3845 bool keep_going = false; 3846 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 3847 if (log) 3848 log->Printf("In while loop, got event: %s.", StateAsCString(stop_state)); 3849 3850 switch (stop_state) 3851 { 3852 case lldb::eStateStopped: 3853 { 3854 // Yay, we're done. Now make sure that our thread plan actually completed. 3855 ThreadSP thread_sp = GetThreadList().FindThreadByIndexID (thread_idx_id); 3856 if (!thread_sp) 3857 { 3858 // Ooh, our thread has vanished. Unlikely that this was successful execution... 3859 if (log) 3860 log->Printf ("Execution completed but our thread (index-id=%u) has vanished.", thread_idx_id); 3861 return_value = eExecutionInterrupted; 3862 } 3863 else 3864 { 3865 StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); 3866 StopReason stop_reason = eStopReasonInvalid; 3867 if (stop_info_sp) 3868 stop_reason = stop_info_sp->GetStopReason(); 3869 if (stop_reason == eStopReasonPlanComplete) 3870 { 3871 if (log) 3872 log->PutCString ("Execution completed successfully."); 3873 // Now mark this plan as private so it doesn't get reported as the stop reason 3874 // after this point. 3875 if (thread_plan_sp) 3876 thread_plan_sp->SetPrivate (orig_plan_private); 3877 return_value = eExecutionCompleted; 3878 } 3879 else 3880 { 3881 if (log) 3882 log->PutCString ("Thread plan didn't successfully complete."); 3883 3884 return_value = eExecutionInterrupted; 3885 } 3886 } 3887 } 3888 break; 3889 3890 case lldb::eStateCrashed: 3891 if (log) 3892 log->PutCString ("Execution crashed."); 3893 return_value = eExecutionInterrupted; 3894 break; 3895 3896 case lldb::eStateRunning: 3897 do_resume = false; 3898 keep_going = true; 3899 break; 3900 3901 default: 3902 if (log) 3903 log->Printf("Execution stopped with unexpected state: %s.", StateAsCString(stop_state)); 3904 3905 errors.Printf ("Execution stopped with unexpected state."); 3906 return_value = eExecutionInterrupted; 3907 break; 3908 } 3909 if (keep_going) 3910 continue; 3911 else 3912 break; 3913 } 3914 else 3915 { 3916 if (log) 3917 log->PutCString ("got_event was true, but the event pointer was null. How odd..."); 3918 return_value = eExecutionInterrupted; 3919 break; 3920 } 3921 } 3922 else 3923 { 3924 // If we didn't get an event that means we've timed out... 3925 // We will interrupt the process here. Depending on what we were asked to do we will 3926 // either exit, or try with all threads running for the same timeout. 3927 // Not really sure what to do if Halt fails here... 3928 3929 if (log) { 3930 if (try_all_threads) 3931 { 3932 if (first_timeout) 3933 log->Printf ("Process::RunThreadPlan(): Running function with timeout: %d timed out, " 3934 "trying with all threads enabled.", 3935 single_thread_timeout_usec); 3936 else 3937 log->Printf ("Process::RunThreadPlan(): Restarting function with all threads enabled " 3938 "and timeout: %d timed out.", 3939 single_thread_timeout_usec); 3940 } 3941 else 3942 log->Printf ("Process::RunThreadPlan(): Running function with timeout: %d timed out, " 3943 "halt and abandoning execution.", 3944 single_thread_timeout_usec); 3945 } 3946 3947 Error halt_error = Halt(); 3948 if (halt_error.Success()) 3949 { 3950 if (log) 3951 log->PutCString ("Process::RunThreadPlan(): Halt succeeded."); 3952 3953 // If halt succeeds, it always produces a stopped event. Wait for that: 3954 3955 real_timeout = TimeValue::Now(); 3956 real_timeout.OffsetWithMicroSeconds(500000); 3957 3958 got_event = listener.WaitForEvent(&real_timeout, event_sp); 3959 3960 if (got_event) 3961 { 3962 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 3963 if (log) 3964 { 3965 log->Printf ("Process::RunThreadPlan(): Stopped with event: %s", StateAsCString(stop_state)); 3966 if (stop_state == lldb::eStateStopped 3967 && Process::ProcessEventData::GetInterruptedFromEvent(event_sp.get())) 3968 log->PutCString (" Event was the Halt interruption event."); 3969 } 3970 3971 if (stop_state == lldb::eStateStopped) 3972 { 3973 // Between the time we initiated the Halt and the time we delivered it, the process could have 3974 // already finished its job. Check that here: 3975 3976 if (thread->IsThreadPlanDone (thread_plan_sp.get())) 3977 { 3978 if (log) 3979 log->PutCString ("Process::RunThreadPlan(): Even though we timed out, the call plan was done. " 3980 "Exiting wait loop."); 3981 return_value = eExecutionCompleted; 3982 break; 3983 } 3984 3985 if (!try_all_threads) 3986 { 3987 if (log) 3988 log->PutCString ("try_all_threads was false, we stopped so now we're quitting."); 3989 return_value = eExecutionInterrupted; 3990 break; 3991 } 3992 3993 if (first_timeout) 3994 { 3995 // Set all the other threads to run, and return to the top of the loop, which will continue; 3996 first_timeout = false; 3997 thread_plan_sp->SetStopOthers (false); 3998 if (log) 3999 log->PutCString ("Process::RunThreadPlan(): About to resume."); 4000 4001 continue; 4002 } 4003 else 4004 { 4005 // Running all threads failed, so return Interrupted. 4006 if (log) 4007 log->PutCString("Process::RunThreadPlan(): running all threads timed out."); 4008 return_value = eExecutionInterrupted; 4009 break; 4010 } 4011 } 4012 } 4013 else 4014 { if (log) 4015 log->PutCString("Process::RunThreadPlan(): halt said it succeeded, but I got no event. " 4016 "I'm getting out of here passing Interrupted."); 4017 return_value = eExecutionInterrupted; 4018 break; 4019 } 4020 } 4021 else 4022 { 4023 // This branch is to work around some problems with gdb-remote's Halt. It is a little racy, and can return 4024 // an error from halt, but if you wait a bit you'll get a stopped event anyway. 4025 if (log) 4026 log->Printf ("Process::RunThreadPlan(): halt failed: error = \"%s\", I'm just going to wait a little longer and see if I get a stopped event.", 4027 halt_error.AsCString()); 4028 real_timeout = TimeValue::Now(); 4029 real_timeout.OffsetWithMicroSeconds(500000); 4030 timeout_ptr = &real_timeout; 4031 got_event = listener.WaitForEvent(&real_timeout, event_sp); 4032 if (!got_event || event_sp.get() == NULL) 4033 { 4034 // This is not going anywhere, bag out. 4035 if (log) 4036 log->PutCString ("Process::RunThreadPlan(): halt failed: and waiting for the stopped event failed."); 4037 return_value = eExecutionInterrupted; 4038 break; 4039 } 4040 else 4041 { 4042 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 4043 if (log) 4044 log->PutCString ("Process::RunThreadPlan(): halt failed: but then I got a stopped event. Whatever..."); 4045 if (stop_state == lldb::eStateStopped) 4046 { 4047 // Between the time we initiated the Halt and the time we delivered it, the process could have 4048 // already finished its job. Check that here: 4049 4050 if (thread->IsThreadPlanDone (thread_plan_sp.get())) 4051 { 4052 if (log) 4053 log->PutCString ("Process::RunThreadPlan(): Even though we timed out, the call plan was done. " 4054 "Exiting wait loop."); 4055 return_value = eExecutionCompleted; 4056 break; 4057 } 4058 4059 if (first_timeout) 4060 { 4061 // Set all the other threads to run, and return to the top of the loop, which will continue; 4062 first_timeout = false; 4063 thread_plan_sp->SetStopOthers (false); 4064 if (log) 4065 log->PutCString ("Process::RunThreadPlan(): About to resume."); 4066 4067 continue; 4068 } 4069 else 4070 { 4071 // Running all threads failed, so return Interrupted. 4072 if (log) 4073 log->PutCString ("Process::RunThreadPlan(): running all threads timed out."); 4074 return_value = eExecutionInterrupted; 4075 break; 4076 } 4077 } 4078 else 4079 { 4080 if (log) 4081 log->Printf ("Process::RunThreadPlan(): halt failed, I waited and didn't get" 4082 " a stopped event, instead got %s.", StateAsCString(stop_state)); 4083 return_value = eExecutionInterrupted; 4084 break; 4085 } 4086 } 4087 } 4088 4089 } 4090 4091 } // END WAIT LOOP 4092 4093 // Now do some processing on the results of the run: 4094 if (return_value == eExecutionInterrupted) 4095 { 4096 if (log) 4097 { 4098 StreamString s; 4099 if (event_sp) 4100 event_sp->Dump (&s); 4101 else 4102 { 4103 log->PutCString ("Process::RunThreadPlan(): Stop event that interrupted us is NULL."); 4104 } 4105 4106 StreamString ts; 4107 4108 const char *event_explanation = NULL; 4109 4110 do 4111 { 4112 const Process::ProcessEventData *event_data = Process::ProcessEventData::GetEventDataFromEvent (event_sp.get()); 4113 4114 if (!event_data) 4115 { 4116 event_explanation = "<no event data>"; 4117 break; 4118 } 4119 4120 Process *process = event_data->GetProcessSP().get(); 4121 4122 if (!process) 4123 { 4124 event_explanation = "<no process>"; 4125 break; 4126 } 4127 4128 ThreadList &thread_list = process->GetThreadList(); 4129 4130 uint32_t num_threads = thread_list.GetSize(); 4131 uint32_t thread_index; 4132 4133 ts.Printf("<%u threads> ", num_threads); 4134 4135 for (thread_index = 0; 4136 thread_index < num_threads; 4137 ++thread_index) 4138 { 4139 Thread *thread = thread_list.GetThreadAtIndex(thread_index).get(); 4140 4141 if (!thread) 4142 { 4143 ts.Printf("<?> "); 4144 continue; 4145 } 4146 4147 ts.Printf("<0x%4.4llx ", thread->GetID()); 4148 RegisterContext *register_context = thread->GetRegisterContext().get(); 4149 4150 if (register_context) 4151 ts.Printf("[ip 0x%llx] ", register_context->GetPC()); 4152 else 4153 ts.Printf("[ip unknown] "); 4154 4155 lldb::StopInfoSP stop_info_sp = thread->GetStopInfo(); 4156 if (stop_info_sp) 4157 { 4158 const char *stop_desc = stop_info_sp->GetDescription(); 4159 if (stop_desc) 4160 ts.PutCString (stop_desc); 4161 } 4162 ts.Printf(">"); 4163 } 4164 4165 event_explanation = ts.GetData(); 4166 } while (0); 4167 4168 if (log) 4169 { 4170 if (event_explanation) 4171 log->Printf("Process::RunThreadPlan(): execution interrupted: %s %s", s.GetData(), event_explanation); 4172 else 4173 log->Printf("Process::RunThreadPlan(): execution interrupted: %s", s.GetData()); 4174 } 4175 4176 if (discard_on_error && thread_plan_sp) 4177 { 4178 thread->DiscardThreadPlansUpToPlan (thread_plan_sp); 4179 thread_plan_sp->SetPrivate (orig_plan_private); 4180 } 4181 } 4182 } 4183 else if (return_value == eExecutionSetupError) 4184 { 4185 if (log) 4186 log->PutCString("Process::RunThreadPlan(): execution set up error."); 4187 4188 if (discard_on_error && thread_plan_sp) 4189 { 4190 thread->DiscardThreadPlansUpToPlan (thread_plan_sp); 4191 thread_plan_sp->SetPrivate (orig_plan_private); 4192 } 4193 } 4194 else 4195 { 4196 if (thread->IsThreadPlanDone (thread_plan_sp.get())) 4197 { 4198 if (log) 4199 log->PutCString("Process::RunThreadPlan(): thread plan is done"); 4200 return_value = eExecutionCompleted; 4201 } 4202 else if (thread->WasThreadPlanDiscarded (thread_plan_sp.get())) 4203 { 4204 if (log) 4205 log->PutCString("Process::RunThreadPlan(): thread plan was discarded"); 4206 return_value = eExecutionDiscarded; 4207 } 4208 else 4209 { 4210 if (log) 4211 log->PutCString("Process::RunThreadPlan(): thread plan stopped in mid course"); 4212 if (discard_on_error && thread_plan_sp) 4213 { 4214 if (log) 4215 log->PutCString("Process::RunThreadPlan(): discarding thread plan 'cause discard_on_error is set."); 4216 thread->DiscardThreadPlansUpToPlan (thread_plan_sp); 4217 thread_plan_sp->SetPrivate (orig_plan_private); 4218 } 4219 } 4220 } 4221 4222 // Thread we ran the function in may have gone away because we ran the target 4223 // Check that it's still there, and if it is put it back in the context. Also restore the 4224 // frame in the context if it is still present. 4225 thread = GetThreadList().FindThreadByIndexID(thread_idx_id, true).get(); 4226 if (thread) 4227 { 4228 exe_ctx.SetFrameSP (thread->GetFrameWithStackID (ctx_frame_id)); 4229 } 4230 4231 // Also restore the current process'es selected frame & thread, since this function calling may 4232 // be done behind the user's back. 4233 4234 if (selected_tid != LLDB_INVALID_THREAD_ID) 4235 { 4236 if (GetThreadList().SetSelectedThreadByIndexID (selected_tid) && selected_stack_id.IsValid()) 4237 { 4238 // We were able to restore the selected thread, now restore the frame: 4239 StackFrameSP old_frame_sp = GetThreadList().GetSelectedThread()->GetFrameWithStackID(selected_stack_id); 4240 if (old_frame_sp) 4241 GetThreadList().GetSelectedThread()->SetSelectedFrame(old_frame_sp.get()); 4242 } 4243 } 4244 4245 return return_value; 4246 } 4247 4248 const char * 4249 Process::ExecutionResultAsCString (ExecutionResults result) 4250 { 4251 const char *result_name; 4252 4253 switch (result) 4254 { 4255 case eExecutionCompleted: 4256 result_name = "eExecutionCompleted"; 4257 break; 4258 case eExecutionDiscarded: 4259 result_name = "eExecutionDiscarded"; 4260 break; 4261 case eExecutionInterrupted: 4262 result_name = "eExecutionInterrupted"; 4263 break; 4264 case eExecutionSetupError: 4265 result_name = "eExecutionSetupError"; 4266 break; 4267 case eExecutionTimedOut: 4268 result_name = "eExecutionTimedOut"; 4269 break; 4270 } 4271 return result_name; 4272 } 4273 4274 void 4275 Process::GetStatus (Stream &strm) 4276 { 4277 const StateType state = GetState(); 4278 if (StateIsStoppedState(state, false)) 4279 { 4280 if (state == eStateExited) 4281 { 4282 int exit_status = GetExitStatus(); 4283 const char *exit_description = GetExitDescription(); 4284 strm.Printf ("Process %llu exited with status = %i (0x%8.8x) %s\n", 4285 GetID(), 4286 exit_status, 4287 exit_status, 4288 exit_description ? exit_description : ""); 4289 } 4290 else 4291 { 4292 if (state == eStateConnected) 4293 strm.Printf ("Connected to remote target.\n"); 4294 else 4295 strm.Printf ("Process %llu %s\n", GetID(), StateAsCString (state)); 4296 } 4297 } 4298 else 4299 { 4300 strm.Printf ("Process %llu is running.\n", GetID()); 4301 } 4302 } 4303 4304 size_t 4305 Process::GetThreadStatus (Stream &strm, 4306 bool only_threads_with_stop_reason, 4307 uint32_t start_frame, 4308 uint32_t num_frames, 4309 uint32_t num_frames_with_source) 4310 { 4311 size_t num_thread_infos_dumped = 0; 4312 4313 const size_t num_threads = GetThreadList().GetSize(); 4314 for (uint32_t i = 0; i < num_threads; i++) 4315 { 4316 Thread *thread = GetThreadList().GetThreadAtIndex(i).get(); 4317 if (thread) 4318 { 4319 if (only_threads_with_stop_reason) 4320 { 4321 if (thread->GetStopInfo().get() == NULL) 4322 continue; 4323 } 4324 thread->GetStatus (strm, 4325 start_frame, 4326 num_frames, 4327 num_frames_with_source); 4328 ++num_thread_infos_dumped; 4329 } 4330 } 4331 return num_thread_infos_dumped; 4332 } 4333 4334 //-------------------------------------------------------------- 4335 // class Process::SettingsController 4336 //-------------------------------------------------------------- 4337 4338 Process::SettingsController::SettingsController () : 4339 UserSettingsController ("process", Target::GetSettingsController()) 4340 { 4341 m_default_settings.reset (new ProcessInstanceSettings (*this, 4342 false, 4343 InstanceSettings::GetDefaultName().AsCString())); 4344 } 4345 4346 Process::SettingsController::~SettingsController () 4347 { 4348 } 4349 4350 lldb::InstanceSettingsSP 4351 Process::SettingsController::CreateInstanceSettings (const char *instance_name) 4352 { 4353 ProcessInstanceSettings *new_settings = new ProcessInstanceSettings (*GetSettingsController(), 4354 false, 4355 instance_name); 4356 lldb::InstanceSettingsSP new_settings_sp (new_settings); 4357 return new_settings_sp; 4358 } 4359 4360 //-------------------------------------------------------------- 4361 // class ProcessInstanceSettings 4362 //-------------------------------------------------------------- 4363 4364 ProcessInstanceSettings::ProcessInstanceSettings 4365 ( 4366 UserSettingsController &owner, 4367 bool live_instance, 4368 const char *name 4369 ) : 4370 InstanceSettings (owner, name ? name : InstanceSettings::InvalidName().AsCString(), live_instance) 4371 { 4372 // CopyInstanceSettings is a pure virtual function in InstanceSettings; it therefore cannot be called 4373 // until the vtables for ProcessInstanceSettings are properly set up, i.e. AFTER all the initializers. 4374 // For this reason it has to be called here, rather than in the initializer or in the parent constructor. 4375 // This is true for CreateInstanceName() too. 4376 4377 if (GetInstanceName () == InstanceSettings::InvalidName()) 4378 { 4379 ChangeInstanceName (std::string (CreateInstanceName().AsCString())); 4380 m_owner.RegisterInstanceSettings (this); 4381 } 4382 4383 if (live_instance) 4384 { 4385 const lldb::InstanceSettingsSP &pending_settings = m_owner.FindPendingSettings (m_instance_name); 4386 CopyInstanceSettings (pending_settings,false); 4387 //m_owner.RemovePendingSettings (m_instance_name); 4388 } 4389 } 4390 4391 ProcessInstanceSettings::ProcessInstanceSettings (const ProcessInstanceSettings &rhs) : 4392 InstanceSettings (*Process::GetSettingsController(), CreateInstanceName().AsCString()) 4393 { 4394 if (m_instance_name != InstanceSettings::GetDefaultName()) 4395 { 4396 const lldb::InstanceSettingsSP &pending_settings = m_owner.FindPendingSettings (m_instance_name); 4397 CopyInstanceSettings (pending_settings,false); 4398 m_owner.RemovePendingSettings (m_instance_name); 4399 } 4400 } 4401 4402 ProcessInstanceSettings::~ProcessInstanceSettings () 4403 { 4404 } 4405 4406 ProcessInstanceSettings& 4407 ProcessInstanceSettings::operator= (const ProcessInstanceSettings &rhs) 4408 { 4409 if (this != &rhs) 4410 { 4411 } 4412 4413 return *this; 4414 } 4415 4416 4417 void 4418 ProcessInstanceSettings::UpdateInstanceSettingsVariable (const ConstString &var_name, 4419 const char *index_value, 4420 const char *value, 4421 const ConstString &instance_name, 4422 const SettingEntry &entry, 4423 VarSetOperationType op, 4424 Error &err, 4425 bool pending) 4426 { 4427 } 4428 4429 void 4430 ProcessInstanceSettings::CopyInstanceSettings (const lldb::InstanceSettingsSP &new_settings, 4431 bool pending) 4432 { 4433 // if (new_settings.get() == NULL) 4434 // return; 4435 // 4436 // ProcessInstanceSettings *new_process_settings = (ProcessInstanceSettings *) new_settings.get(); 4437 } 4438 4439 bool 4440 ProcessInstanceSettings::GetInstanceSettingsValue (const SettingEntry &entry, 4441 const ConstString &var_name, 4442 StringList &value, 4443 Error *err) 4444 { 4445 if (err) 4446 err->SetErrorStringWithFormat ("unrecognized variable name '%s'", var_name.AsCString()); 4447 return false; 4448 } 4449 4450 const ConstString 4451 ProcessInstanceSettings::CreateInstanceName () 4452 { 4453 static int instance_count = 1; 4454 StreamString sstr; 4455 4456 sstr.Printf ("process_%d", instance_count); 4457 ++instance_count; 4458 4459 const ConstString ret_val (sstr.GetData()); 4460 return ret_val; 4461 } 4462 4463 //-------------------------------------------------- 4464 // SettingsController Variable Tables 4465 //-------------------------------------------------- 4466 4467 SettingEntry 4468 Process::SettingsController::global_settings_table[] = 4469 { 4470 //{ "var-name", var-type , "default", enum-table, init'd, hidden, "help-text"}, 4471 { NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL } 4472 }; 4473 4474 4475 SettingEntry 4476 Process::SettingsController::instance_settings_table[] = 4477 { 4478 //{ "var-name", var-type, "default", enum-table, init'd, hidden, "help-text"}, 4479 { NULL, eSetVarTypeNone, NULL, NULL, false, false, NULL } 4480 }; 4481 4482 4483 4484 4485