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 #include "lldb/Target/ThreadPlanBase.h" 40 41 using namespace lldb; 42 using namespace lldb_private; 43 44 void 45 ProcessInstanceInfo::Dump (Stream &s, Platform *platform) const 46 { 47 const char *cstr; 48 if (m_pid != LLDB_INVALID_PROCESS_ID) 49 s.Printf (" pid = %llu\n", m_pid); 50 51 if (m_parent_pid != LLDB_INVALID_PROCESS_ID) 52 s.Printf (" parent = %llu\n", m_parent_pid); 53 54 if (m_executable) 55 { 56 s.Printf (" name = %s\n", m_executable.GetFilename().GetCString()); 57 s.PutCString (" file = "); 58 m_executable.Dump(&s); 59 s.EOL(); 60 } 61 const uint32_t argc = m_arguments.GetArgumentCount(); 62 if (argc > 0) 63 { 64 for (uint32_t i=0; i<argc; i++) 65 { 66 const char *arg = m_arguments.GetArgumentAtIndex(i); 67 if (i < 10) 68 s.Printf (" arg[%u] = %s\n", i, arg); 69 else 70 s.Printf ("arg[%u] = %s\n", i, arg); 71 } 72 } 73 74 const uint32_t envc = m_environment.GetArgumentCount(); 75 if (envc > 0) 76 { 77 for (uint32_t i=0; i<envc; i++) 78 { 79 const char *env = m_environment.GetArgumentAtIndex(i); 80 if (i < 10) 81 s.Printf (" env[%u] = %s\n", i, env); 82 else 83 s.Printf ("env[%u] = %s\n", i, env); 84 } 85 } 86 87 if (m_arch.IsValid()) 88 s.Printf (" arch = %s\n", m_arch.GetTriple().str().c_str()); 89 90 if (m_uid != UINT32_MAX) 91 { 92 cstr = platform->GetUserName (m_uid); 93 s.Printf (" uid = %-5u (%s)\n", m_uid, cstr ? cstr : ""); 94 } 95 if (m_gid != UINT32_MAX) 96 { 97 cstr = platform->GetGroupName (m_gid); 98 s.Printf (" gid = %-5u (%s)\n", m_gid, cstr ? cstr : ""); 99 } 100 if (m_euid != UINT32_MAX) 101 { 102 cstr = platform->GetUserName (m_euid); 103 s.Printf (" euid = %-5u (%s)\n", m_euid, cstr ? cstr : ""); 104 } 105 if (m_egid != UINT32_MAX) 106 { 107 cstr = platform->GetGroupName (m_egid); 108 s.Printf (" egid = %-5u (%s)\n", m_egid, cstr ? cstr : ""); 109 } 110 } 111 112 void 113 ProcessInstanceInfo::DumpTableHeader (Stream &s, Platform *platform, bool show_args, bool verbose) 114 { 115 const char *label; 116 if (show_args || verbose) 117 label = "ARGUMENTS"; 118 else 119 label = "NAME"; 120 121 if (verbose) 122 { 123 s.Printf ("PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE %s\n", label); 124 s.PutCString ("====== ====== ========== ========== ========== ========== ======================== ============================\n"); 125 } 126 else 127 { 128 s.Printf ("PID PARENT USER ARCH %s\n", label); 129 s.PutCString ("====== ====== ========== ======= ============================\n"); 130 } 131 } 132 133 void 134 ProcessInstanceInfo::DumpAsTableRow (Stream &s, Platform *platform, bool show_args, bool verbose) const 135 { 136 if (m_pid != LLDB_INVALID_PROCESS_ID) 137 { 138 const char *cstr; 139 s.Printf ("%-6llu %-6llu ", m_pid, m_parent_pid); 140 141 142 if (verbose) 143 { 144 cstr = platform->GetUserName (m_uid); 145 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 146 s.Printf ("%-10s ", cstr); 147 else 148 s.Printf ("%-10u ", m_uid); 149 150 cstr = platform->GetGroupName (m_gid); 151 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 152 s.Printf ("%-10s ", cstr); 153 else 154 s.Printf ("%-10u ", m_gid); 155 156 cstr = platform->GetUserName (m_euid); 157 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 158 s.Printf ("%-10s ", cstr); 159 else 160 s.Printf ("%-10u ", m_euid); 161 162 cstr = platform->GetGroupName (m_egid); 163 if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed 164 s.Printf ("%-10s ", cstr); 165 else 166 s.Printf ("%-10u ", m_egid); 167 s.Printf ("%-24s ", m_arch.IsValid() ? m_arch.GetTriple().str().c_str() : ""); 168 } 169 else 170 { 171 s.Printf ("%-10s %-7d %s ", 172 platform->GetUserName (m_euid), 173 (int)m_arch.GetTriple().getArchName().size(), 174 m_arch.GetTriple().getArchName().data()); 175 } 176 177 if (verbose || show_args) 178 { 179 const uint32_t argc = m_arguments.GetArgumentCount(); 180 if (argc > 0) 181 { 182 for (uint32_t i=0; i<argc; i++) 183 { 184 if (i > 0) 185 s.PutChar (' '); 186 s.PutCString (m_arguments.GetArgumentAtIndex(i)); 187 } 188 } 189 } 190 else 191 { 192 s.PutCString (GetName()); 193 } 194 195 s.EOL(); 196 } 197 } 198 199 200 void 201 ProcessInfo::SetArguments (char const **argv, 202 bool first_arg_is_executable, 203 bool first_arg_is_executable_and_argument) 204 { 205 m_arguments.SetArguments (argv); 206 207 // Is the first argument the executable? 208 if (first_arg_is_executable) 209 { 210 const char *first_arg = m_arguments.GetArgumentAtIndex (0); 211 if (first_arg) 212 { 213 // Yes the first argument is an executable, set it as the executable 214 // in the launch options. Don't resolve the file path as the path 215 // could be a remote platform path 216 const bool resolve = false; 217 m_executable.SetFile(first_arg, resolve); 218 219 // If argument zero is an executable and shouldn't be included 220 // in the arguments, remove it from the front of the arguments 221 if (first_arg_is_executable_and_argument == false) 222 m_arguments.DeleteArgumentAtIndex (0); 223 } 224 } 225 } 226 void 227 ProcessInfo::SetArguments (const Args& args, 228 bool first_arg_is_executable, 229 bool first_arg_is_executable_and_argument) 230 { 231 // Copy all arguments 232 m_arguments = args; 233 234 // Is the first argument the executable? 235 if (first_arg_is_executable) 236 { 237 const char *first_arg = m_arguments.GetArgumentAtIndex (0); 238 if (first_arg) 239 { 240 // Yes the first argument is an executable, set it as the executable 241 // in the launch options. Don't resolve the file path as the path 242 // could be a remote platform path 243 const bool resolve = false; 244 m_executable.SetFile(first_arg, resolve); 245 246 // If argument zero is an executable and shouldn't be included 247 // in the arguments, remove it from the front of the arguments 248 if (first_arg_is_executable_and_argument == false) 249 m_arguments.DeleteArgumentAtIndex (0); 250 } 251 } 252 } 253 254 void 255 ProcessLaunchInfo::FinalizeFileActions (Target *target, bool default_to_use_pty) 256 { 257 // If notthing was specified, then check the process for any default 258 // settings that were set with "settings set" 259 if (m_file_actions.empty()) 260 { 261 if (m_flags.Test(eLaunchFlagDisableSTDIO)) 262 { 263 AppendSuppressFileAction (STDIN_FILENO , true, false); 264 AppendSuppressFileAction (STDOUT_FILENO, false, true); 265 AppendSuppressFileAction (STDERR_FILENO, false, true); 266 } 267 else 268 { 269 // Check for any values that might have gotten set with any of: 270 // (lldb) settings set target.input-path 271 // (lldb) settings set target.output-path 272 // (lldb) settings set target.error-path 273 const char *in_path = NULL; 274 const char *out_path = NULL; 275 const char *err_path = NULL; 276 if (target) 277 { 278 in_path = target->GetStandardInputPath(); 279 out_path = target->GetStandardOutputPath(); 280 err_path = target->GetStandardErrorPath(); 281 } 282 283 if (default_to_use_pty && (!in_path && !out_path && !err_path)) 284 { 285 if (m_pty.OpenFirstAvailableMaster (O_RDWR|O_NOCTTY, NULL, 0)) 286 { 287 in_path = out_path = err_path = m_pty.GetSlaveName (NULL, 0); 288 } 289 } 290 291 if (in_path) 292 AppendOpenFileAction(STDIN_FILENO, in_path, true, false); 293 294 if (out_path) 295 AppendOpenFileAction(STDOUT_FILENO, out_path, false, true); 296 297 if (err_path) 298 AppendOpenFileAction(STDERR_FILENO, err_path, false, true); 299 300 } 301 } 302 } 303 304 305 bool 306 ProcessLaunchInfo::ConvertArgumentsForLaunchingInShell (Error &error, 307 bool localhost, 308 bool will_debug, 309 bool first_arg_is_full_shell_command) 310 { 311 error.Clear(); 312 313 if (GetFlags().Test (eLaunchFlagLaunchInShell)) 314 { 315 const char *shell_executable = GetShell(); 316 if (shell_executable) 317 { 318 char shell_resolved_path[PATH_MAX]; 319 320 if (localhost) 321 { 322 FileSpec shell_filespec (shell_executable, true); 323 324 if (!shell_filespec.Exists()) 325 { 326 // Resolve the path in case we just got "bash", "sh" or "tcsh" 327 if (!shell_filespec.ResolveExecutableLocation ()) 328 { 329 error.SetErrorStringWithFormat("invalid shell path '%s'", shell_executable); 330 return false; 331 } 332 } 333 shell_filespec.GetPath (shell_resolved_path, sizeof(shell_resolved_path)); 334 shell_executable = shell_resolved_path; 335 } 336 337 Args shell_arguments; 338 std::string safe_arg; 339 shell_arguments.AppendArgument (shell_executable); 340 shell_arguments.AppendArgument ("-c"); 341 342 StreamString shell_command; 343 if (will_debug) 344 { 345 shell_command.PutCString ("exec"); 346 if (GetArchitecture().IsValid()) 347 { 348 shell_command.Printf(" /usr/bin/arch -arch %s", GetArchitecture().GetArchitectureName()); 349 // Set the resume count to 2: 350 // 1 - stop in shell 351 // 2 - stop in /usr/bin/arch 352 // 3 - then we will stop in our program 353 SetResumeCount(2); 354 } 355 else 356 { 357 // Set the resume count to 1: 358 // 1 - stop in shell 359 // 2 - then we will stop in our program 360 SetResumeCount(1); 361 } 362 } 363 364 const char **argv = GetArguments().GetConstArgumentVector (); 365 if (argv) 366 { 367 if (first_arg_is_full_shell_command) 368 { 369 // There should only be one argument that is the shell command itself to be used as is 370 if (argv[0] && !argv[1]) 371 shell_command.Printf("%s", argv[0]); 372 else 373 return false; 374 } 375 else 376 { 377 for (size_t i=0; argv[i] != NULL; ++i) 378 { 379 const char *arg = Args::GetShellSafeArgument (argv[i], safe_arg); 380 shell_command.Printf(" %s", arg); 381 } 382 } 383 shell_arguments.AppendArgument (shell_command.GetString().c_str()); 384 } 385 else 386 { 387 return false; 388 } 389 390 m_executable.SetFile(shell_executable, false); 391 m_arguments = shell_arguments; 392 return true; 393 } 394 else 395 { 396 error.SetErrorString ("invalid shell path"); 397 } 398 } 399 else 400 { 401 error.SetErrorString ("not launching in shell"); 402 } 403 return false; 404 } 405 406 407 bool 408 ProcessLaunchInfo::FileAction::Open (int fd, const char *path, bool read, bool write) 409 { 410 if ((read || write) && fd >= 0 && path && path[0]) 411 { 412 m_action = eFileActionOpen; 413 m_fd = fd; 414 if (read && write) 415 m_arg = O_NOCTTY | O_CREAT | O_RDWR; 416 else if (read) 417 m_arg = O_NOCTTY | O_RDONLY; 418 else 419 m_arg = O_NOCTTY | O_CREAT | O_WRONLY; 420 m_path.assign (path); 421 return true; 422 } 423 else 424 { 425 Clear(); 426 } 427 return false; 428 } 429 430 bool 431 ProcessLaunchInfo::FileAction::Close (int fd) 432 { 433 Clear(); 434 if (fd >= 0) 435 { 436 m_action = eFileActionClose; 437 m_fd = fd; 438 } 439 return m_fd >= 0; 440 } 441 442 443 bool 444 ProcessLaunchInfo::FileAction::Duplicate (int fd, int dup_fd) 445 { 446 Clear(); 447 if (fd >= 0 && dup_fd >= 0) 448 { 449 m_action = eFileActionDuplicate; 450 m_fd = fd; 451 m_arg = dup_fd; 452 } 453 return m_fd >= 0; 454 } 455 456 457 458 bool 459 ProcessLaunchInfo::FileAction::AddPosixSpawnFileAction (posix_spawn_file_actions_t *file_actions, 460 const FileAction *info, 461 Log *log, 462 Error& error) 463 { 464 if (info == NULL) 465 return false; 466 467 switch (info->m_action) 468 { 469 case eFileActionNone: 470 error.Clear(); 471 break; 472 473 case eFileActionClose: 474 if (info->m_fd == -1) 475 error.SetErrorString ("invalid fd for posix_spawn_file_actions_addclose(...)"); 476 else 477 { 478 error.SetError (::posix_spawn_file_actions_addclose (file_actions, info->m_fd), 479 eErrorTypePOSIX); 480 if (log && (error.Fail() || log)) 481 error.PutToLog(log, "posix_spawn_file_actions_addclose (action=%p, fd=%i)", 482 file_actions, info->m_fd); 483 } 484 break; 485 486 case eFileActionDuplicate: 487 if (info->m_fd == -1) 488 error.SetErrorString ("invalid fd for posix_spawn_file_actions_adddup2(...)"); 489 else if (info->m_arg == -1) 490 error.SetErrorString ("invalid duplicate fd for posix_spawn_file_actions_adddup2(...)"); 491 else 492 { 493 error.SetError (::posix_spawn_file_actions_adddup2 (file_actions, info->m_fd, info->m_arg), 494 eErrorTypePOSIX); 495 if (log && (error.Fail() || log)) 496 error.PutToLog(log, "posix_spawn_file_actions_adddup2 (action=%p, fd=%i, dup_fd=%i)", 497 file_actions, info->m_fd, info->m_arg); 498 } 499 break; 500 501 case eFileActionOpen: 502 if (info->m_fd == -1) 503 error.SetErrorString ("invalid fd in posix_spawn_file_actions_addopen(...)"); 504 else 505 { 506 int oflag = info->m_arg; 507 508 mode_t mode = 0; 509 510 if (oflag & O_CREAT) 511 mode = 0640; 512 513 error.SetError (::posix_spawn_file_actions_addopen (file_actions, 514 info->m_fd, 515 info->m_path.c_str(), 516 oflag, 517 mode), 518 eErrorTypePOSIX); 519 if (error.Fail() || log) 520 error.PutToLog(log, 521 "posix_spawn_file_actions_addopen (action=%p, fd=%i, path='%s', oflag=%i, mode=%i)", 522 file_actions, info->m_fd, info->m_path.c_str(), oflag, mode); 523 } 524 break; 525 526 default: 527 error.SetErrorStringWithFormat ("invalid file action: %i", info->m_action); 528 break; 529 } 530 return error.Success(); 531 } 532 533 Error 534 ProcessLaunchCommandOptions::SetOptionValue (uint32_t option_idx, const char *option_arg) 535 { 536 Error error; 537 char short_option = (char) m_getopt_table[option_idx].val; 538 539 switch (short_option) 540 { 541 case 's': // Stop at program entry point 542 launch_info.GetFlags().Set (eLaunchFlagStopAtEntry); 543 break; 544 545 case 'i': // STDIN for read only 546 { 547 ProcessLaunchInfo::FileAction action; 548 if (action.Open (STDIN_FILENO, option_arg, true, false)) 549 launch_info.AppendFileAction (action); 550 } 551 break; 552 553 case 'o': // Open STDOUT for write only 554 { 555 ProcessLaunchInfo::FileAction action; 556 if (action.Open (STDOUT_FILENO, option_arg, false, true)) 557 launch_info.AppendFileAction (action); 558 } 559 break; 560 561 case 'e': // STDERR for write only 562 { 563 ProcessLaunchInfo::FileAction action; 564 if (action.Open (STDERR_FILENO, option_arg, false, true)) 565 launch_info.AppendFileAction (action); 566 } 567 break; 568 569 570 case 'p': // Process plug-in name 571 launch_info.SetProcessPluginName (option_arg); 572 break; 573 574 case 'n': // Disable STDIO 575 { 576 ProcessLaunchInfo::FileAction action; 577 if (action.Open (STDIN_FILENO, "/dev/null", true, false)) 578 launch_info.AppendFileAction (action); 579 if (action.Open (STDOUT_FILENO, "/dev/null", false, true)) 580 launch_info.AppendFileAction (action); 581 if (action.Open (STDERR_FILENO, "/dev/null", false, true)) 582 launch_info.AppendFileAction (action); 583 } 584 break; 585 586 case 'w': 587 launch_info.SetWorkingDirectory (option_arg); 588 break; 589 590 case 't': // Open process in new terminal window 591 launch_info.GetFlags().Set (eLaunchFlagLaunchInTTY); 592 break; 593 594 case 'a': 595 if (!launch_info.GetArchitecture().SetTriple (option_arg, m_interpreter.GetPlatform(true).get())) 596 launch_info.GetArchitecture().SetTriple (option_arg); 597 break; 598 599 case 'A': 600 launch_info.GetFlags().Set (eLaunchFlagDisableASLR); 601 break; 602 603 case 'c': 604 if (option_arg && option_arg[0]) 605 launch_info.SetShell (option_arg); 606 else 607 launch_info.SetShell ("/bin/bash"); 608 break; 609 610 case 'v': 611 launch_info.GetEnvironmentEntries().AppendArgument(option_arg); 612 break; 613 614 default: 615 error.SetErrorStringWithFormat("unrecognized short option character '%c'", short_option); 616 break; 617 618 } 619 return error; 620 } 621 622 OptionDefinition 623 ProcessLaunchCommandOptions::g_option_table[] = 624 { 625 { 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."}, 626 { LLDB_OPT_SET_ALL, false, "disable-aslr", 'A', no_argument, NULL, 0, eArgTypeNone, "Disable address space layout randomization when launching a process."}, 627 { LLDB_OPT_SET_ALL, false, "plugin", 'p', required_argument, NULL, 0, eArgTypePlugin, "Name of the process plugin you want to use."}, 628 { LLDB_OPT_SET_ALL, false, "working-dir", 'w', required_argument, NULL, 0, eArgTypePath, "Set the current working directory to <path> when running the inferior."}, 629 { LLDB_OPT_SET_ALL, false, "arch", 'a', required_argument, NULL, 0, eArgTypeArchitecture, "Set the architecture for the process to launch when ambiguous."}, 630 { 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."}, 631 { LLDB_OPT_SET_ALL, false, "shell", 'c', optional_argument, NULL, 0, eArgTypePath, "Run the process in a shell (not supported on all platforms)."}, 632 633 { LLDB_OPT_SET_1 , false, "stdin", 'i', required_argument, NULL, 0, eArgTypePath, "Redirect stdin for the process to <path>."}, 634 { LLDB_OPT_SET_1 , false, "stdout", 'o', required_argument, NULL, 0, eArgTypePath, "Redirect stdout for the process to <path>."}, 635 { LLDB_OPT_SET_1 , false, "stderr", 'e', required_argument, NULL, 0, eArgTypePath, "Redirect stderr for the process to <path>."}, 636 637 { LLDB_OPT_SET_2 , false, "tty", 't', no_argument, NULL, 0, eArgTypeNone, "Start the process in a terminal (not supported on all platforms)."}, 638 639 { 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."}, 640 641 { 0 , false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 642 }; 643 644 645 646 bool 647 ProcessInstanceInfoMatch::NameMatches (const char *process_name) const 648 { 649 if (m_name_match_type == eNameMatchIgnore || process_name == NULL) 650 return true; 651 const char *match_name = m_match_info.GetName(); 652 if (!match_name) 653 return true; 654 655 return lldb_private::NameMatches (process_name, m_name_match_type, match_name); 656 } 657 658 bool 659 ProcessInstanceInfoMatch::Matches (const ProcessInstanceInfo &proc_info) const 660 { 661 if (!NameMatches (proc_info.GetName())) 662 return false; 663 664 if (m_match_info.ProcessIDIsValid() && 665 m_match_info.GetProcessID() != proc_info.GetProcessID()) 666 return false; 667 668 if (m_match_info.ParentProcessIDIsValid() && 669 m_match_info.GetParentProcessID() != proc_info.GetParentProcessID()) 670 return false; 671 672 if (m_match_info.UserIDIsValid () && 673 m_match_info.GetUserID() != proc_info.GetUserID()) 674 return false; 675 676 if (m_match_info.GroupIDIsValid () && 677 m_match_info.GetGroupID() != proc_info.GetGroupID()) 678 return false; 679 680 if (m_match_info.EffectiveUserIDIsValid () && 681 m_match_info.GetEffectiveUserID() != proc_info.GetEffectiveUserID()) 682 return false; 683 684 if (m_match_info.EffectiveGroupIDIsValid () && 685 m_match_info.GetEffectiveGroupID() != proc_info.GetEffectiveGroupID()) 686 return false; 687 688 if (m_match_info.GetArchitecture().IsValid() && 689 m_match_info.GetArchitecture() != proc_info.GetArchitecture()) 690 return false; 691 return true; 692 } 693 694 bool 695 ProcessInstanceInfoMatch::MatchAllProcesses () const 696 { 697 if (m_name_match_type != eNameMatchIgnore) 698 return false; 699 700 if (m_match_info.ProcessIDIsValid()) 701 return false; 702 703 if (m_match_info.ParentProcessIDIsValid()) 704 return false; 705 706 if (m_match_info.UserIDIsValid ()) 707 return false; 708 709 if (m_match_info.GroupIDIsValid ()) 710 return false; 711 712 if (m_match_info.EffectiveUserIDIsValid ()) 713 return false; 714 715 if (m_match_info.EffectiveGroupIDIsValid ()) 716 return false; 717 718 if (m_match_info.GetArchitecture().IsValid()) 719 return false; 720 721 if (m_match_all_users) 722 return false; 723 724 return true; 725 726 } 727 728 void 729 ProcessInstanceInfoMatch::Clear() 730 { 731 m_match_info.Clear(); 732 m_name_match_type = eNameMatchIgnore; 733 m_match_all_users = false; 734 } 735 736 ProcessSP 737 Process::FindPlugin (Target &target, const char *plugin_name, Listener &listener, const FileSpec *crash_file_path) 738 { 739 ProcessSP process_sp; 740 ProcessCreateInstance create_callback = NULL; 741 if (plugin_name) 742 { 743 create_callback = PluginManager::GetProcessCreateCallbackForPluginName (plugin_name); 744 if (create_callback) 745 { 746 process_sp = create_callback(target, listener, crash_file_path); 747 if (process_sp) 748 { 749 if (!process_sp->CanDebug(target, true)) 750 process_sp.reset(); 751 } 752 } 753 } 754 else 755 { 756 for (uint32_t idx = 0; (create_callback = PluginManager::GetProcessCreateCallbackAtIndex(idx)) != NULL; ++idx) 757 { 758 process_sp = create_callback(target, listener, crash_file_path); 759 if (process_sp) 760 { 761 if (!process_sp->CanDebug(target, false)) 762 process_sp.reset(); 763 else 764 break; 765 } 766 } 767 } 768 return process_sp; 769 } 770 771 ConstString & 772 Process::GetStaticBroadcasterClass () 773 { 774 static ConstString class_name ("lldb.process"); 775 return class_name; 776 } 777 778 //---------------------------------------------------------------------- 779 // Process constructor 780 //---------------------------------------------------------------------- 781 Process::Process(Target &target, Listener &listener) : 782 UserID (LLDB_INVALID_PROCESS_ID), 783 Broadcaster (&(target.GetDebugger()), "lldb.process"), 784 ProcessInstanceSettings (GetSettingsController()), 785 m_target (target), 786 m_public_state (eStateUnloaded), 787 m_private_state (eStateUnloaded), 788 m_private_state_broadcaster (NULL, "lldb.process.internal_state_broadcaster"), 789 m_private_state_control_broadcaster (NULL, "lldb.process.internal_state_control_broadcaster"), 790 m_private_state_listener ("lldb.process.internal_state_listener"), 791 m_private_state_control_wait(), 792 m_private_state_thread (LLDB_INVALID_HOST_THREAD), 793 m_mod_id (), 794 m_thread_index_id (0), 795 m_exit_status (-1), 796 m_exit_string (), 797 m_thread_list (this), 798 m_notifications (), 799 m_image_tokens (), 800 m_listener (listener), 801 m_breakpoint_site_list (), 802 m_dynamic_checkers_ap (), 803 m_unix_signals (), 804 m_abi_sp (), 805 m_process_input_reader (), 806 m_stdio_communication ("process.stdio"), 807 m_stdio_communication_mutex (Mutex::eMutexTypeRecursive), 808 m_stdout_data (), 809 m_stderr_data (), 810 m_memory_cache (*this), 811 m_allocated_memory_cache (*this), 812 m_should_detach (false), 813 m_next_event_action_ap(), 814 m_run_lock (), 815 m_currently_handling_event(false), 816 m_can_jit(eCanJITDontKnow) 817 { 818 UpdateInstanceName(); 819 820 CheckInWithManager (); 821 822 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 823 if (log) 824 log->Printf ("%p Process::Process()", this); 825 826 SetEventName (eBroadcastBitStateChanged, "state-changed"); 827 SetEventName (eBroadcastBitInterrupt, "interrupt"); 828 SetEventName (eBroadcastBitSTDOUT, "stdout-available"); 829 SetEventName (eBroadcastBitSTDERR, "stderr-available"); 830 831 listener.StartListeningForEvents (this, 832 eBroadcastBitStateChanged | 833 eBroadcastBitInterrupt | 834 eBroadcastBitSTDOUT | 835 eBroadcastBitSTDERR); 836 837 m_private_state_listener.StartListeningForEvents(&m_private_state_broadcaster, 838 eBroadcastBitStateChanged); 839 840 m_private_state_listener.StartListeningForEvents(&m_private_state_control_broadcaster, 841 eBroadcastInternalStateControlStop | 842 eBroadcastInternalStateControlPause | 843 eBroadcastInternalStateControlResume); 844 } 845 846 //---------------------------------------------------------------------- 847 // Destructor 848 //---------------------------------------------------------------------- 849 Process::~Process() 850 { 851 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 852 if (log) 853 log->Printf ("%p Process::~Process()", this); 854 StopPrivateStateThread(); 855 } 856 857 void 858 Process::Finalize() 859 { 860 switch (GetPrivateState()) 861 { 862 case eStateConnected: 863 case eStateAttaching: 864 case eStateLaunching: 865 case eStateStopped: 866 case eStateRunning: 867 case eStateStepping: 868 case eStateCrashed: 869 case eStateSuspended: 870 if (GetShouldDetach()) 871 Detach(); 872 else 873 Destroy(); 874 break; 875 876 case eStateInvalid: 877 case eStateUnloaded: 878 case eStateDetached: 879 case eStateExited: 880 break; 881 } 882 883 // Clear our broadcaster before we proceed with destroying 884 Broadcaster::Clear(); 885 886 // Do any cleanup needed prior to being destructed... Subclasses 887 // that override this method should call this superclass method as well. 888 889 // We need to destroy the loader before the derived Process class gets destroyed 890 // since it is very likely that undoing the loader will require access to the real process. 891 m_dynamic_checkers_ap.reset(); 892 m_abi_sp.reset(); 893 m_os_ap.reset(); 894 m_dyld_ap.reset(); 895 m_thread_list.Destroy(); 896 std::vector<Notifications> empty_notifications; 897 m_notifications.swap(empty_notifications); 898 m_image_tokens.clear(); 899 m_memory_cache.Clear(); 900 m_allocated_memory_cache.Clear(); 901 m_language_runtimes.clear(); 902 m_next_event_action_ap.reset(); 903 } 904 905 void 906 Process::RegisterNotificationCallbacks (const Notifications& callbacks) 907 { 908 m_notifications.push_back(callbacks); 909 if (callbacks.initialize != NULL) 910 callbacks.initialize (callbacks.baton, this); 911 } 912 913 bool 914 Process::UnregisterNotificationCallbacks(const Notifications& callbacks) 915 { 916 std::vector<Notifications>::iterator pos, end = m_notifications.end(); 917 for (pos = m_notifications.begin(); pos != end; ++pos) 918 { 919 if (pos->baton == callbacks.baton && 920 pos->initialize == callbacks.initialize && 921 pos->process_state_changed == callbacks.process_state_changed) 922 { 923 m_notifications.erase(pos); 924 return true; 925 } 926 } 927 return false; 928 } 929 930 void 931 Process::SynchronouslyNotifyStateChanged (StateType state) 932 { 933 std::vector<Notifications>::iterator notification_pos, notification_end = m_notifications.end(); 934 for (notification_pos = m_notifications.begin(); notification_pos != notification_end; ++notification_pos) 935 { 936 if (notification_pos->process_state_changed) 937 notification_pos->process_state_changed (notification_pos->baton, this, state); 938 } 939 } 940 941 // FIXME: We need to do some work on events before the general Listener sees them. 942 // For instance if we are continuing from a breakpoint, we need to ensure that we do 943 // the little "insert real insn, step & stop" trick. But we can't do that when the 944 // event is delivered by the broadcaster - since that is done on the thread that is 945 // waiting for new events, so if we needed more than one event for our handling, we would 946 // stall. So instead we do it when we fetch the event off of the queue. 947 // 948 949 StateType 950 Process::GetNextEvent (EventSP &event_sp) 951 { 952 StateType state = eStateInvalid; 953 954 if (m_listener.GetNextEventForBroadcaster (this, event_sp) && event_sp) 955 state = Process::ProcessEventData::GetStateFromEvent (event_sp.get()); 956 957 return state; 958 } 959 960 961 StateType 962 Process::WaitForProcessToStop (const TimeValue *timeout) 963 { 964 // We can't just wait for a "stopped" event, because the stopped event may have restarted the target. 965 // We have to actually check each event, and in the case of a stopped event check the restarted flag 966 // on the event. 967 EventSP event_sp; 968 StateType state = GetState(); 969 // If we are exited or detached, we won't ever get back to any 970 // other valid state... 971 if (state == eStateDetached || state == eStateExited) 972 return state; 973 974 while (state != eStateInvalid) 975 { 976 state = WaitForStateChangedEvents (timeout, event_sp); 977 switch (state) 978 { 979 case eStateCrashed: 980 case eStateDetached: 981 case eStateExited: 982 case eStateUnloaded: 983 return state; 984 case eStateStopped: 985 if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) 986 continue; 987 else 988 return state; 989 default: 990 continue; 991 } 992 } 993 return state; 994 } 995 996 997 StateType 998 Process::WaitForState 999 ( 1000 const TimeValue *timeout, 1001 const StateType *match_states, const uint32_t num_match_states 1002 ) 1003 { 1004 EventSP event_sp; 1005 uint32_t i; 1006 StateType state = GetState(); 1007 while (state != eStateInvalid) 1008 { 1009 // If we are exited or detached, we won't ever get back to any 1010 // other valid state... 1011 if (state == eStateDetached || state == eStateExited) 1012 return state; 1013 1014 state = WaitForStateChangedEvents (timeout, event_sp); 1015 1016 for (i=0; i<num_match_states; ++i) 1017 { 1018 if (match_states[i] == state) 1019 return state; 1020 } 1021 } 1022 return state; 1023 } 1024 1025 bool 1026 Process::HijackProcessEvents (Listener *listener) 1027 { 1028 if (listener != NULL) 1029 { 1030 return HijackBroadcaster(listener, eBroadcastBitStateChanged); 1031 } 1032 else 1033 return false; 1034 } 1035 1036 void 1037 Process::RestoreProcessEvents () 1038 { 1039 RestoreBroadcaster(); 1040 } 1041 1042 bool 1043 Process::HijackPrivateProcessEvents (Listener *listener) 1044 { 1045 if (listener != NULL) 1046 { 1047 return m_private_state_broadcaster.HijackBroadcaster(listener, eBroadcastBitStateChanged); 1048 } 1049 else 1050 return false; 1051 } 1052 1053 void 1054 Process::RestorePrivateProcessEvents () 1055 { 1056 m_private_state_broadcaster.RestoreBroadcaster(); 1057 } 1058 1059 StateType 1060 Process::WaitForStateChangedEvents (const TimeValue *timeout, EventSP &event_sp) 1061 { 1062 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1063 1064 if (log) 1065 log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); 1066 1067 StateType state = eStateInvalid; 1068 if (m_listener.WaitForEventForBroadcasterWithType (timeout, 1069 this, 1070 eBroadcastBitStateChanged, 1071 event_sp)) 1072 state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 1073 1074 if (log) 1075 log->Printf ("Process::%s (timeout = %p, event_sp) => %s", 1076 __FUNCTION__, 1077 timeout, 1078 StateAsCString(state)); 1079 return state; 1080 } 1081 1082 Event * 1083 Process::PeekAtStateChangedEvents () 1084 { 1085 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1086 1087 if (log) 1088 log->Printf ("Process::%s...", __FUNCTION__); 1089 1090 Event *event_ptr; 1091 event_ptr = m_listener.PeekAtNextEventForBroadcasterWithType (this, 1092 eBroadcastBitStateChanged); 1093 if (log) 1094 { 1095 if (event_ptr) 1096 { 1097 log->Printf ("Process::%s (event_ptr) => %s", 1098 __FUNCTION__, 1099 StateAsCString(ProcessEventData::GetStateFromEvent (event_ptr))); 1100 } 1101 else 1102 { 1103 log->Printf ("Process::%s no events found", 1104 __FUNCTION__); 1105 } 1106 } 1107 return event_ptr; 1108 } 1109 1110 StateType 1111 Process::WaitForStateChangedEventsPrivate (const TimeValue *timeout, EventSP &event_sp) 1112 { 1113 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1114 1115 if (log) 1116 log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); 1117 1118 StateType state = eStateInvalid; 1119 if (m_private_state_listener.WaitForEventForBroadcasterWithType (timeout, 1120 &m_private_state_broadcaster, 1121 eBroadcastBitStateChanged, 1122 event_sp)) 1123 state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 1124 1125 // This is a bit of a hack, but when we wait here we could very well return 1126 // to the command-line, and that could disable the log, which would render the 1127 // log we got above invalid. 1128 if (log) 1129 { 1130 if (state == eStateInvalid) 1131 log->Printf ("Process::%s (timeout = %p, event_sp) => TIMEOUT", __FUNCTION__, timeout); 1132 else 1133 log->Printf ("Process::%s (timeout = %p, event_sp) => %s", __FUNCTION__, timeout, StateAsCString(state)); 1134 } 1135 return state; 1136 } 1137 1138 bool 1139 Process::WaitForEventsPrivate (const TimeValue *timeout, EventSP &event_sp, bool control_only) 1140 { 1141 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 1142 1143 if (log) 1144 log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); 1145 1146 if (control_only) 1147 return m_private_state_listener.WaitForEventForBroadcaster(timeout, &m_private_state_control_broadcaster, event_sp); 1148 else 1149 return m_private_state_listener.WaitForEvent(timeout, event_sp); 1150 } 1151 1152 bool 1153 Process::IsRunning () const 1154 { 1155 return StateIsRunningState (m_public_state.GetValue()); 1156 } 1157 1158 int 1159 Process::GetExitStatus () 1160 { 1161 if (m_public_state.GetValue() == eStateExited) 1162 return m_exit_status; 1163 return -1; 1164 } 1165 1166 1167 const char * 1168 Process::GetExitDescription () 1169 { 1170 if (m_public_state.GetValue() == eStateExited && !m_exit_string.empty()) 1171 return m_exit_string.c_str(); 1172 return NULL; 1173 } 1174 1175 bool 1176 Process::SetExitStatus (int status, const char *cstr) 1177 { 1178 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); 1179 if (log) 1180 log->Printf("Process::SetExitStatus (status=%i (0x%8.8x), description=%s%s%s)", 1181 status, status, 1182 cstr ? "\"" : "", 1183 cstr ? cstr : "NULL", 1184 cstr ? "\"" : ""); 1185 1186 // We were already in the exited state 1187 if (m_private_state.GetValue() == eStateExited) 1188 { 1189 if (log) 1190 log->Printf("Process::SetExitStatus () ignoring exit status because state was already set to eStateExited"); 1191 return false; 1192 } 1193 1194 m_exit_status = status; 1195 if (cstr) 1196 m_exit_string = cstr; 1197 else 1198 m_exit_string.clear(); 1199 1200 DidExit (); 1201 1202 SetPrivateState (eStateExited); 1203 return true; 1204 } 1205 1206 // This static callback can be used to watch for local child processes on 1207 // the current host. The the child process exits, the process will be 1208 // found in the global target list (we want to be completely sure that the 1209 // lldb_private::Process doesn't go away before we can deliver the signal. 1210 bool 1211 Process::SetProcessExitStatus (void *callback_baton, 1212 lldb::pid_t pid, 1213 bool exited, 1214 int signo, // Zero for no signal 1215 int exit_status // Exit value of process if signal is zero 1216 ) 1217 { 1218 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS)); 1219 if (log) 1220 log->Printf ("Process::SetProcessExitStatus (baton=%p, pid=%llu, exited=%i, signal=%i, exit_status=%i)\n", 1221 callback_baton, 1222 pid, 1223 exited, 1224 signo, 1225 exit_status); 1226 1227 if (exited) 1228 { 1229 TargetSP target_sp(Debugger::FindTargetWithProcessID (pid)); 1230 if (target_sp) 1231 { 1232 ProcessSP process_sp (target_sp->GetProcessSP()); 1233 if (process_sp) 1234 { 1235 const char *signal_cstr = NULL; 1236 if (signo) 1237 signal_cstr = process_sp->GetUnixSignals().GetSignalAsCString (signo); 1238 1239 process_sp->SetExitStatus (exit_status, signal_cstr); 1240 } 1241 } 1242 return true; 1243 } 1244 return false; 1245 } 1246 1247 1248 void 1249 Process::UpdateThreadListIfNeeded () 1250 { 1251 const uint32_t stop_id = GetStopID(); 1252 if (m_thread_list.GetSize(false) == 0 || stop_id != m_thread_list.GetStopID()) 1253 { 1254 const StateType state = GetPrivateState(); 1255 if (StateIsStoppedState (state, true)) 1256 { 1257 Mutex::Locker locker (m_thread_list.GetMutex ()); 1258 // m_thread_list does have its own mutex, but we need to 1259 // hold onto the mutex between the call to UpdateThreadList(...) 1260 // and the os->UpdateThreadList(...) so it doesn't change on us 1261 ThreadList new_thread_list(this); 1262 // Always update the thread list with the protocol specific 1263 // thread list, but only update if "true" is returned 1264 if (UpdateThreadList (m_thread_list, new_thread_list)) 1265 { 1266 OperatingSystem *os = GetOperatingSystem (); 1267 if (os) 1268 os->UpdateThreadList (m_thread_list, new_thread_list); 1269 m_thread_list.Update (new_thread_list); 1270 m_thread_list.SetStopID (stop_id); 1271 } 1272 } 1273 } 1274 } 1275 1276 uint32_t 1277 Process::GetNextThreadIndexID () 1278 { 1279 return ++m_thread_index_id; 1280 } 1281 1282 StateType 1283 Process::GetState() 1284 { 1285 // If any other threads access this we will need a mutex for it 1286 return m_public_state.GetValue (); 1287 } 1288 1289 void 1290 Process::SetPublicState (StateType new_state) 1291 { 1292 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); 1293 if (log) 1294 log->Printf("Process::SetPublicState (%s)", StateAsCString(new_state)); 1295 const StateType old_state = m_public_state.GetValue(); 1296 m_public_state.SetValue (new_state); 1297 1298 // On the transition from Run to Stopped, we unlock the writer end of the 1299 // run lock. The lock gets locked in Resume, which is the public API 1300 // to tell the program to run. 1301 if (!IsHijackedForEvent(eBroadcastBitStateChanged)) 1302 { 1303 if (new_state == eStateDetached) 1304 { 1305 if (log) 1306 log->Printf("Process::SetPublicState (%s) -- unlocking run lock for detach", StateAsCString(new_state)); 1307 m_run_lock.WriteUnlock(); 1308 } 1309 else 1310 { 1311 const bool old_state_is_stopped = StateIsStoppedState(old_state, false); 1312 const bool new_state_is_stopped = StateIsStoppedState(new_state, false); 1313 if (old_state_is_stopped != new_state_is_stopped) 1314 { 1315 if (new_state_is_stopped) 1316 { 1317 if (log) 1318 log->Printf("Process::SetPublicState (%s) -- unlocking run lock", StateAsCString(new_state)); 1319 m_run_lock.WriteUnlock(); 1320 } 1321 } 1322 } 1323 } 1324 } 1325 1326 Error 1327 Process::Resume () 1328 { 1329 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); 1330 if (log) 1331 log->Printf("Process::Resume -- locking run lock"); 1332 if (!m_run_lock.WriteTryLock()) 1333 { 1334 Error error("Resume request failed - process still running."); 1335 if (log) 1336 log->Printf ("Process::Resume: -- WriteTryLock failed, not resuming."); 1337 return error; 1338 } 1339 return PrivateResume(); 1340 } 1341 1342 StateType 1343 Process::GetPrivateState () 1344 { 1345 return m_private_state.GetValue(); 1346 } 1347 1348 void 1349 Process::SetPrivateState (StateType new_state) 1350 { 1351 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); 1352 bool state_changed = false; 1353 1354 if (log) 1355 log->Printf("Process::SetPrivateState (%s)", StateAsCString(new_state)); 1356 1357 Mutex::Locker locker(m_private_state.GetMutex()); 1358 1359 const StateType old_state = m_private_state.GetValueNoLock (); 1360 state_changed = old_state != new_state; 1361 // This code is left commented out in case we ever need to control 1362 // the private process state with another run lock. Right now it doesn't 1363 // seem like we need to do this, but if we ever do, we can uncomment and 1364 // use this code. 1365 // const bool old_state_is_stopped = StateIsStoppedState(old_state, false); 1366 // const bool new_state_is_stopped = StateIsStoppedState(new_state, false); 1367 // if (old_state_is_stopped != new_state_is_stopped) 1368 // { 1369 // if (new_state_is_stopped) 1370 // m_private_run_lock.WriteUnlock(); 1371 // else 1372 // m_private_run_lock.WriteLock(); 1373 // } 1374 1375 if (state_changed) 1376 { 1377 m_private_state.SetValueNoLock (new_state); 1378 if (StateIsStoppedState(new_state, false)) 1379 { 1380 m_mod_id.BumpStopID(); 1381 m_memory_cache.Clear(); 1382 if (log) 1383 log->Printf("Process::SetPrivateState (%s) stop_id = %u", StateAsCString(new_state), m_mod_id.GetStopID()); 1384 } 1385 // Use our target to get a shared pointer to ourselves... 1386 m_private_state_broadcaster.BroadcastEvent (eBroadcastBitStateChanged, new ProcessEventData (GetTarget().GetProcessSP(), new_state)); 1387 } 1388 else 1389 { 1390 if (log) 1391 log->Printf("Process::SetPrivateState (%s) state didn't change. Ignoring...", StateAsCString(new_state)); 1392 } 1393 } 1394 1395 void 1396 Process::SetRunningUserExpression (bool on) 1397 { 1398 m_mod_id.SetRunningUserExpression (on); 1399 } 1400 1401 addr_t 1402 Process::GetImageInfoAddress() 1403 { 1404 return LLDB_INVALID_ADDRESS; 1405 } 1406 1407 //---------------------------------------------------------------------- 1408 // LoadImage 1409 // 1410 // This function provides a default implementation that works for most 1411 // unix variants. Any Process subclasses that need to do shared library 1412 // loading differently should override LoadImage and UnloadImage and 1413 // do what is needed. 1414 //---------------------------------------------------------------------- 1415 uint32_t 1416 Process::LoadImage (const FileSpec &image_spec, Error &error) 1417 { 1418 char path[PATH_MAX]; 1419 image_spec.GetPath(path, sizeof(path)); 1420 1421 DynamicLoader *loader = GetDynamicLoader(); 1422 if (loader) 1423 { 1424 error = loader->CanLoadImage(); 1425 if (error.Fail()) 1426 return LLDB_INVALID_IMAGE_TOKEN; 1427 } 1428 1429 if (error.Success()) 1430 { 1431 ThreadSP thread_sp(GetThreadList ().GetSelectedThread()); 1432 1433 if (thread_sp) 1434 { 1435 StackFrameSP frame_sp (thread_sp->GetStackFrameAtIndex (0)); 1436 1437 if (frame_sp) 1438 { 1439 ExecutionContext exe_ctx; 1440 frame_sp->CalculateExecutionContext (exe_ctx); 1441 bool unwind_on_error = true; 1442 StreamString expr; 1443 expr.Printf("dlopen (\"%s\", 2)", path); 1444 const char *prefix = "extern \"C\" void* dlopen (const char *path, int mode);\n"; 1445 lldb::ValueObjectSP result_valobj_sp; 1446 ClangUserExpression::Evaluate (exe_ctx, eExecutionPolicyAlways, lldb::eLanguageTypeUnknown, ClangUserExpression::eResultTypeAny, unwind_on_error, expr.GetData(), prefix, result_valobj_sp); 1447 error = result_valobj_sp->GetError(); 1448 if (error.Success()) 1449 { 1450 Scalar scalar; 1451 if (result_valobj_sp->ResolveValue (scalar)) 1452 { 1453 addr_t image_ptr = scalar.ULongLong(LLDB_INVALID_ADDRESS); 1454 if (image_ptr != 0 && image_ptr != LLDB_INVALID_ADDRESS) 1455 { 1456 uint32_t image_token = m_image_tokens.size(); 1457 m_image_tokens.push_back (image_ptr); 1458 return image_token; 1459 } 1460 } 1461 } 1462 } 1463 } 1464 } 1465 if (!error.AsCString()) 1466 error.SetErrorStringWithFormat("unable to load '%s'", path); 1467 return LLDB_INVALID_IMAGE_TOKEN; 1468 } 1469 1470 //---------------------------------------------------------------------- 1471 // UnloadImage 1472 // 1473 // This function provides a default implementation that works for most 1474 // unix variants. Any Process subclasses that need to do shared library 1475 // loading differently should override LoadImage and UnloadImage and 1476 // do what is needed. 1477 //---------------------------------------------------------------------- 1478 Error 1479 Process::UnloadImage (uint32_t image_token) 1480 { 1481 Error error; 1482 if (image_token < m_image_tokens.size()) 1483 { 1484 const addr_t image_addr = m_image_tokens[image_token]; 1485 if (image_addr == LLDB_INVALID_ADDRESS) 1486 { 1487 error.SetErrorString("image already unloaded"); 1488 } 1489 else 1490 { 1491 DynamicLoader *loader = GetDynamicLoader(); 1492 if (loader) 1493 error = loader->CanLoadImage(); 1494 1495 if (error.Success()) 1496 { 1497 ThreadSP thread_sp(GetThreadList ().GetSelectedThread()); 1498 1499 if (thread_sp) 1500 { 1501 StackFrameSP frame_sp (thread_sp->GetStackFrameAtIndex (0)); 1502 1503 if (frame_sp) 1504 { 1505 ExecutionContext exe_ctx; 1506 frame_sp->CalculateExecutionContext (exe_ctx); 1507 bool unwind_on_error = true; 1508 StreamString expr; 1509 expr.Printf("dlclose ((void *)0x%llx)", image_addr); 1510 const char *prefix = "extern \"C\" int dlclose(void* handle);\n"; 1511 lldb::ValueObjectSP result_valobj_sp; 1512 ClangUserExpression::Evaluate (exe_ctx, eExecutionPolicyAlways, lldb::eLanguageTypeUnknown, ClangUserExpression::eResultTypeAny, unwind_on_error, expr.GetData(), prefix, result_valobj_sp); 1513 if (result_valobj_sp->GetError().Success()) 1514 { 1515 Scalar scalar; 1516 if (result_valobj_sp->ResolveValue (scalar)) 1517 { 1518 if (scalar.UInt(1)) 1519 { 1520 error.SetErrorStringWithFormat("expression failed: \"%s\"", expr.GetData()); 1521 } 1522 else 1523 { 1524 m_image_tokens[image_token] = LLDB_INVALID_ADDRESS; 1525 } 1526 } 1527 } 1528 else 1529 { 1530 error = result_valobj_sp->GetError(); 1531 } 1532 } 1533 } 1534 } 1535 } 1536 } 1537 else 1538 { 1539 error.SetErrorString("invalid image token"); 1540 } 1541 return error; 1542 } 1543 1544 const lldb::ABISP & 1545 Process::GetABI() 1546 { 1547 if (!m_abi_sp) 1548 m_abi_sp = ABI::FindPlugin(m_target.GetArchitecture()); 1549 return m_abi_sp; 1550 } 1551 1552 LanguageRuntime * 1553 Process::GetLanguageRuntime(lldb::LanguageType language, bool retry_if_null) 1554 { 1555 LanguageRuntimeCollection::iterator pos; 1556 pos = m_language_runtimes.find (language); 1557 if (pos == m_language_runtimes.end() || (retry_if_null && !(*pos).second)) 1558 { 1559 lldb::LanguageRuntimeSP runtime_sp(LanguageRuntime::FindPlugin(this, language)); 1560 1561 m_language_runtimes[language] = runtime_sp; 1562 return runtime_sp.get(); 1563 } 1564 else 1565 return (*pos).second.get(); 1566 } 1567 1568 CPPLanguageRuntime * 1569 Process::GetCPPLanguageRuntime (bool retry_if_null) 1570 { 1571 LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeC_plus_plus, retry_if_null); 1572 if (runtime != NULL && runtime->GetLanguageType() == eLanguageTypeC_plus_plus) 1573 return static_cast<CPPLanguageRuntime *> (runtime); 1574 return NULL; 1575 } 1576 1577 ObjCLanguageRuntime * 1578 Process::GetObjCLanguageRuntime (bool retry_if_null) 1579 { 1580 LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeObjC, retry_if_null); 1581 if (runtime != NULL && runtime->GetLanguageType() == eLanguageTypeObjC) 1582 return static_cast<ObjCLanguageRuntime *> (runtime); 1583 return NULL; 1584 } 1585 1586 bool 1587 Process::IsPossibleDynamicValue (ValueObject& in_value) 1588 { 1589 if (in_value.IsDynamic()) 1590 return false; 1591 LanguageType known_type = in_value.GetObjectRuntimeLanguage(); 1592 1593 if (known_type != eLanguageTypeUnknown && known_type != eLanguageTypeC) 1594 { 1595 LanguageRuntime *runtime = GetLanguageRuntime (known_type); 1596 return runtime ? runtime->CouldHaveDynamicValue(in_value) : false; 1597 } 1598 1599 LanguageRuntime *cpp_runtime = GetLanguageRuntime (eLanguageTypeC_plus_plus); 1600 if (cpp_runtime && cpp_runtime->CouldHaveDynamicValue(in_value)) 1601 return true; 1602 1603 LanguageRuntime *objc_runtime = GetLanguageRuntime (eLanguageTypeObjC); 1604 return objc_runtime ? objc_runtime->CouldHaveDynamicValue(in_value) : false; 1605 } 1606 1607 BreakpointSiteList & 1608 Process::GetBreakpointSiteList() 1609 { 1610 return m_breakpoint_site_list; 1611 } 1612 1613 const BreakpointSiteList & 1614 Process::GetBreakpointSiteList() const 1615 { 1616 return m_breakpoint_site_list; 1617 } 1618 1619 1620 void 1621 Process::DisableAllBreakpointSites () 1622 { 1623 m_breakpoint_site_list.SetEnabledForAll (false); 1624 } 1625 1626 Error 1627 Process::ClearBreakpointSiteByID (lldb::user_id_t break_id) 1628 { 1629 Error error (DisableBreakpointSiteByID (break_id)); 1630 1631 if (error.Success()) 1632 m_breakpoint_site_list.Remove(break_id); 1633 1634 return error; 1635 } 1636 1637 Error 1638 Process::DisableBreakpointSiteByID (lldb::user_id_t break_id) 1639 { 1640 Error error; 1641 BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); 1642 if (bp_site_sp) 1643 { 1644 if (bp_site_sp->IsEnabled()) 1645 error = DisableBreakpoint (bp_site_sp.get()); 1646 } 1647 else 1648 { 1649 error.SetErrorStringWithFormat("invalid breakpoint site ID: %llu", break_id); 1650 } 1651 1652 return error; 1653 } 1654 1655 Error 1656 Process::EnableBreakpointSiteByID (lldb::user_id_t break_id) 1657 { 1658 Error error; 1659 BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); 1660 if (bp_site_sp) 1661 { 1662 if (!bp_site_sp->IsEnabled()) 1663 error = EnableBreakpoint (bp_site_sp.get()); 1664 } 1665 else 1666 { 1667 error.SetErrorStringWithFormat("invalid breakpoint site ID: %llu", break_id); 1668 } 1669 return error; 1670 } 1671 1672 lldb::break_id_t 1673 Process::CreateBreakpointSite (const BreakpointLocationSP &owner, bool use_hardware) 1674 { 1675 const addr_t load_addr = owner->GetAddress().GetOpcodeLoadAddress (&m_target); 1676 if (load_addr != LLDB_INVALID_ADDRESS) 1677 { 1678 BreakpointSiteSP bp_site_sp; 1679 1680 // Look up this breakpoint site. If it exists, then add this new owner, otherwise 1681 // create a new breakpoint site and add it. 1682 1683 bp_site_sp = m_breakpoint_site_list.FindByAddress (load_addr); 1684 1685 if (bp_site_sp) 1686 { 1687 bp_site_sp->AddOwner (owner); 1688 owner->SetBreakpointSite (bp_site_sp); 1689 return bp_site_sp->GetID(); 1690 } 1691 else 1692 { 1693 bp_site_sp.reset (new BreakpointSite (&m_breakpoint_site_list, owner, load_addr, LLDB_INVALID_THREAD_ID, use_hardware)); 1694 if (bp_site_sp) 1695 { 1696 if (EnableBreakpoint (bp_site_sp.get()).Success()) 1697 { 1698 owner->SetBreakpointSite (bp_site_sp); 1699 return m_breakpoint_site_list.Add (bp_site_sp); 1700 } 1701 } 1702 } 1703 } 1704 // We failed to enable the breakpoint 1705 return LLDB_INVALID_BREAK_ID; 1706 1707 } 1708 1709 void 1710 Process::RemoveOwnerFromBreakpointSite (lldb::user_id_t owner_id, lldb::user_id_t owner_loc_id, BreakpointSiteSP &bp_site_sp) 1711 { 1712 uint32_t num_owners = bp_site_sp->RemoveOwner (owner_id, owner_loc_id); 1713 if (num_owners == 0) 1714 { 1715 DisableBreakpoint(bp_site_sp.get()); 1716 m_breakpoint_site_list.RemoveByAddress(bp_site_sp->GetLoadAddress()); 1717 } 1718 } 1719 1720 1721 size_t 1722 Process::RemoveBreakpointOpcodesFromBuffer (addr_t bp_addr, size_t size, uint8_t *buf) const 1723 { 1724 size_t bytes_removed = 0; 1725 addr_t intersect_addr; 1726 size_t intersect_size; 1727 size_t opcode_offset; 1728 size_t idx; 1729 BreakpointSiteSP bp_sp; 1730 BreakpointSiteList bp_sites_in_range; 1731 1732 if (m_breakpoint_site_list.FindInRange (bp_addr, bp_addr + size, bp_sites_in_range)) 1733 { 1734 for (idx = 0; (bp_sp = bp_sites_in_range.GetByIndex(idx)); ++idx) 1735 { 1736 if (bp_sp->GetType() == BreakpointSite::eSoftware) 1737 { 1738 if (bp_sp->IntersectsRange(bp_addr, size, &intersect_addr, &intersect_size, &opcode_offset)) 1739 { 1740 assert(bp_addr <= intersect_addr && intersect_addr < bp_addr + size); 1741 assert(bp_addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= bp_addr + size); 1742 assert(opcode_offset + intersect_size <= bp_sp->GetByteSize()); 1743 size_t buf_offset = intersect_addr - bp_addr; 1744 ::memcpy(buf + buf_offset, bp_sp->GetSavedOpcodeBytes() + opcode_offset, intersect_size); 1745 } 1746 } 1747 } 1748 } 1749 return bytes_removed; 1750 } 1751 1752 1753 1754 size_t 1755 Process::GetSoftwareBreakpointTrapOpcode (BreakpointSite* bp_site) 1756 { 1757 PlatformSP platform_sp (m_target.GetPlatform()); 1758 if (platform_sp) 1759 return platform_sp->GetSoftwareBreakpointTrapOpcode (m_target, bp_site); 1760 return 0; 1761 } 1762 1763 Error 1764 Process::EnableSoftwareBreakpoint (BreakpointSite *bp_site) 1765 { 1766 Error error; 1767 assert (bp_site != NULL); 1768 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); 1769 const addr_t bp_addr = bp_site->GetLoadAddress(); 1770 if (log) 1771 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx", bp_site->GetID(), (uint64_t)bp_addr); 1772 if (bp_site->IsEnabled()) 1773 { 1774 if (log) 1775 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already enabled", bp_site->GetID(), (uint64_t)bp_addr); 1776 return error; 1777 } 1778 1779 if (bp_addr == LLDB_INVALID_ADDRESS) 1780 { 1781 error.SetErrorString("BreakpointSite contains an invalid load address."); 1782 return error; 1783 } 1784 // Ask the lldb::Process subclass to fill in the correct software breakpoint 1785 // trap for the breakpoint site 1786 const size_t bp_opcode_size = GetSoftwareBreakpointTrapOpcode(bp_site); 1787 1788 if (bp_opcode_size == 0) 1789 { 1790 error.SetErrorStringWithFormat ("Process::GetSoftwareBreakpointTrapOpcode() returned zero, unable to get breakpoint trap for address 0x%llx", bp_addr); 1791 } 1792 else 1793 { 1794 const uint8_t * const bp_opcode_bytes = bp_site->GetTrapOpcodeBytes(); 1795 1796 if (bp_opcode_bytes == NULL) 1797 { 1798 error.SetErrorString ("BreakpointSite doesn't contain a valid breakpoint trap opcode."); 1799 return error; 1800 } 1801 1802 // Save the original opcode by reading it 1803 if (DoReadMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), bp_opcode_size, error) == bp_opcode_size) 1804 { 1805 // Write a software breakpoint in place of the original opcode 1806 if (DoWriteMemory(bp_addr, bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) 1807 { 1808 uint8_t verify_bp_opcode_bytes[64]; 1809 if (DoReadMemory(bp_addr, verify_bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) 1810 { 1811 if (::memcmp(bp_opcode_bytes, verify_bp_opcode_bytes, bp_opcode_size) == 0) 1812 { 1813 bp_site->SetEnabled(true); 1814 bp_site->SetType (BreakpointSite::eSoftware); 1815 if (log) 1816 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS", 1817 bp_site->GetID(), 1818 (uint64_t)bp_addr); 1819 } 1820 else 1821 error.SetErrorString("failed to verify the breakpoint trap in memory."); 1822 } 1823 else 1824 error.SetErrorString("Unable to read memory to verify breakpoint trap."); 1825 } 1826 else 1827 error.SetErrorString("Unable to write breakpoint trap to memory."); 1828 } 1829 else 1830 error.SetErrorString("Unable to read memory at breakpoint address."); 1831 } 1832 if (log && error.Fail()) 1833 log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s", 1834 bp_site->GetID(), 1835 (uint64_t)bp_addr, 1836 error.AsCString()); 1837 return error; 1838 } 1839 1840 Error 1841 Process::DisableSoftwareBreakpoint (BreakpointSite *bp_site) 1842 { 1843 Error error; 1844 assert (bp_site != NULL); 1845 LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); 1846 addr_t bp_addr = bp_site->GetLoadAddress(); 1847 lldb::user_id_t breakID = bp_site->GetID(); 1848 if (log) 1849 log->Printf ("Process::DisableBreakpoint (breakID = %llu) addr = 0x%llx", breakID, (uint64_t)bp_addr); 1850 1851 if (bp_site->IsHardware()) 1852 { 1853 error.SetErrorString("Breakpoint site is a hardware breakpoint."); 1854 } 1855 else if (bp_site->IsEnabled()) 1856 { 1857 const size_t break_op_size = bp_site->GetByteSize(); 1858 const uint8_t * const break_op = bp_site->GetTrapOpcodeBytes(); 1859 if (break_op_size > 0) 1860 { 1861 // Clear a software breakoint instruction 1862 uint8_t curr_break_op[8]; 1863 assert (break_op_size <= sizeof(curr_break_op)); 1864 bool break_op_found = false; 1865 1866 // Read the breakpoint opcode 1867 if (DoReadMemory (bp_addr, curr_break_op, break_op_size, error) == break_op_size) 1868 { 1869 bool verify = false; 1870 // Make sure we have the a breakpoint opcode exists at this address 1871 if (::memcmp (curr_break_op, break_op, break_op_size) == 0) 1872 { 1873 break_op_found = true; 1874 // We found a valid breakpoint opcode at this address, now restore 1875 // the saved opcode. 1876 if (DoWriteMemory (bp_addr, bp_site->GetSavedOpcodeBytes(), break_op_size, error) == break_op_size) 1877 { 1878 verify = true; 1879 } 1880 else 1881 error.SetErrorString("Memory write failed when restoring original opcode."); 1882 } 1883 else 1884 { 1885 error.SetErrorString("Original breakpoint trap is no longer in memory."); 1886 // Set verify to true and so we can check if the original opcode has already been restored 1887 verify = true; 1888 } 1889 1890 if (verify) 1891 { 1892 uint8_t verify_opcode[8]; 1893 assert (break_op_size < sizeof(verify_opcode)); 1894 // Verify that our original opcode made it back to the inferior 1895 if (DoReadMemory (bp_addr, verify_opcode, break_op_size, error) == break_op_size) 1896 { 1897 // compare the memory we just read with the original opcode 1898 if (::memcmp (bp_site->GetSavedOpcodeBytes(), verify_opcode, break_op_size) == 0) 1899 { 1900 // SUCCESS 1901 bp_site->SetEnabled(false); 1902 if (log) 1903 log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS", bp_site->GetID(), (uint64_t)bp_addr); 1904 return error; 1905 } 1906 else 1907 { 1908 if (break_op_found) 1909 error.SetErrorString("Failed to restore original opcode."); 1910 } 1911 } 1912 else 1913 error.SetErrorString("Failed to read memory to verify that breakpoint trap was restored."); 1914 } 1915 } 1916 else 1917 error.SetErrorString("Unable to read memory that should contain the breakpoint trap."); 1918 } 1919 } 1920 else 1921 { 1922 if (log) 1923 log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already disabled", bp_site->GetID(), (uint64_t)bp_addr); 1924 return error; 1925 } 1926 1927 if (log) 1928 log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s", 1929 bp_site->GetID(), 1930 (uint64_t)bp_addr, 1931 error.AsCString()); 1932 return error; 1933 1934 } 1935 1936 // Comment out line below to disable memory caching, overriding the process setting 1937 // target.process.disable-memory-cache 1938 #define ENABLE_MEMORY_CACHING 1939 // Uncomment to verify memory caching works after making changes to caching code 1940 //#define VERIFY_MEMORY_READS 1941 1942 size_t 1943 Process::ReadMemory (addr_t addr, void *buf, size_t size, Error &error) 1944 { 1945 if (!GetDisableMemoryCache()) 1946 { 1947 #if defined (VERIFY_MEMORY_READS) 1948 // Memory caching is enabled, with debug verification 1949 1950 if (buf && size) 1951 { 1952 // Uncomment the line below to make sure memory caching is working. 1953 // I ran this through the test suite and got no assertions, so I am 1954 // pretty confident this is working well. If any changes are made to 1955 // memory caching, uncomment the line below and test your changes! 1956 1957 // Verify all memory reads by using the cache first, then redundantly 1958 // reading the same memory from the inferior and comparing to make sure 1959 // everything is exactly the same. 1960 std::string verify_buf (size, '\0'); 1961 assert (verify_buf.size() == size); 1962 const size_t cache_bytes_read = m_memory_cache.Read (this, addr, buf, size, error); 1963 Error verify_error; 1964 const size_t verify_bytes_read = ReadMemoryFromInferior (addr, const_cast<char *>(verify_buf.data()), verify_buf.size(), verify_error); 1965 assert (cache_bytes_read == verify_bytes_read); 1966 assert (memcmp(buf, verify_buf.data(), verify_buf.size()) == 0); 1967 assert (verify_error.Success() == error.Success()); 1968 return cache_bytes_read; 1969 } 1970 return 0; 1971 #else // !defined(VERIFY_MEMORY_READS) 1972 // Memory caching is enabled, without debug verification 1973 1974 return m_memory_cache.Read (addr, buf, size, error); 1975 #endif // defined (VERIFY_MEMORY_READS) 1976 } 1977 else 1978 { 1979 // Memory caching is disabled 1980 1981 return ReadMemoryFromInferior (addr, buf, size, error); 1982 } 1983 } 1984 1985 size_t 1986 Process::ReadCStringFromMemory (addr_t addr, std::string &out_str, Error &error) 1987 { 1988 char buf[256]; 1989 out_str.clear(); 1990 addr_t curr_addr = addr; 1991 while (1) 1992 { 1993 size_t length = ReadCStringFromMemory (curr_addr, buf, sizeof(buf), error); 1994 if (length == 0) 1995 break; 1996 out_str.append(buf, length); 1997 // If we got "length - 1" bytes, we didn't get the whole C string, we 1998 // need to read some more characters 1999 if (length == sizeof(buf) - 1) 2000 curr_addr += length; 2001 else 2002 break; 2003 } 2004 return out_str.size(); 2005 } 2006 2007 2008 size_t 2009 Process::ReadCStringFromMemory (addr_t addr, char *dst, size_t dst_max_len, Error &result_error) 2010 { 2011 size_t total_cstr_len = 0; 2012 if (dst && dst_max_len) 2013 { 2014 result_error.Clear(); 2015 // NULL out everything just to be safe 2016 memset (dst, 0, dst_max_len); 2017 Error error; 2018 addr_t curr_addr = addr; 2019 const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize(); 2020 size_t bytes_left = dst_max_len - 1; 2021 char *curr_dst = dst; 2022 2023 while (bytes_left > 0) 2024 { 2025 addr_t cache_line_bytes_left = cache_line_size - (curr_addr % cache_line_size); 2026 addr_t bytes_to_read = std::min<addr_t>(bytes_left, cache_line_bytes_left); 2027 size_t bytes_read = ReadMemory (curr_addr, curr_dst, bytes_to_read, error); 2028 2029 if (bytes_read == 0) 2030 { 2031 result_error = error; 2032 dst[total_cstr_len] = '\0'; 2033 break; 2034 } 2035 const size_t len = strlen(curr_dst); 2036 2037 total_cstr_len += len; 2038 2039 if (len < bytes_to_read) 2040 break; 2041 2042 curr_dst += bytes_read; 2043 curr_addr += bytes_read; 2044 bytes_left -= bytes_read; 2045 } 2046 } 2047 else 2048 { 2049 if (dst == NULL) 2050 result_error.SetErrorString("invalid arguments"); 2051 else 2052 result_error.Clear(); 2053 } 2054 return total_cstr_len; 2055 } 2056 2057 size_t 2058 Process::ReadMemoryFromInferior (addr_t addr, void *buf, size_t size, Error &error) 2059 { 2060 if (buf == NULL || size == 0) 2061 return 0; 2062 2063 size_t bytes_read = 0; 2064 uint8_t *bytes = (uint8_t *)buf; 2065 2066 while (bytes_read < size) 2067 { 2068 const size_t curr_size = size - bytes_read; 2069 const size_t curr_bytes_read = DoReadMemory (addr + bytes_read, 2070 bytes + bytes_read, 2071 curr_size, 2072 error); 2073 bytes_read += curr_bytes_read; 2074 if (curr_bytes_read == curr_size || curr_bytes_read == 0) 2075 break; 2076 } 2077 2078 // Replace any software breakpoint opcodes that fall into this range back 2079 // into "buf" before we return 2080 if (bytes_read > 0) 2081 RemoveBreakpointOpcodesFromBuffer (addr, bytes_read, (uint8_t *)buf); 2082 return bytes_read; 2083 } 2084 2085 uint64_t 2086 Process::ReadUnsignedIntegerFromMemory (lldb::addr_t vm_addr, size_t integer_byte_size, uint64_t fail_value, Error &error) 2087 { 2088 Scalar scalar; 2089 if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, false, scalar, error)) 2090 return scalar.ULongLong(fail_value); 2091 return fail_value; 2092 } 2093 2094 addr_t 2095 Process::ReadPointerFromMemory (lldb::addr_t vm_addr, Error &error) 2096 { 2097 Scalar scalar; 2098 if (ReadScalarIntegerFromMemory(vm_addr, GetAddressByteSize(), false, scalar, error)) 2099 return scalar.ULongLong(LLDB_INVALID_ADDRESS); 2100 return LLDB_INVALID_ADDRESS; 2101 } 2102 2103 2104 bool 2105 Process::WritePointerToMemory (lldb::addr_t vm_addr, 2106 lldb::addr_t ptr_value, 2107 Error &error) 2108 { 2109 Scalar scalar; 2110 const uint32_t addr_byte_size = GetAddressByteSize(); 2111 if (addr_byte_size <= 4) 2112 scalar = (uint32_t)ptr_value; 2113 else 2114 scalar = ptr_value; 2115 return WriteScalarToMemory(vm_addr, scalar, addr_byte_size, error) == addr_byte_size; 2116 } 2117 2118 size_t 2119 Process::WriteMemoryPrivate (addr_t addr, const void *buf, size_t size, Error &error) 2120 { 2121 size_t bytes_written = 0; 2122 const uint8_t *bytes = (const uint8_t *)buf; 2123 2124 while (bytes_written < size) 2125 { 2126 const size_t curr_size = size - bytes_written; 2127 const size_t curr_bytes_written = DoWriteMemory (addr + bytes_written, 2128 bytes + bytes_written, 2129 curr_size, 2130 error); 2131 bytes_written += curr_bytes_written; 2132 if (curr_bytes_written == curr_size || curr_bytes_written == 0) 2133 break; 2134 } 2135 return bytes_written; 2136 } 2137 2138 size_t 2139 Process::WriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 2140 { 2141 #if defined (ENABLE_MEMORY_CACHING) 2142 m_memory_cache.Flush (addr, size); 2143 #endif 2144 2145 if (buf == NULL || size == 0) 2146 return 0; 2147 2148 m_mod_id.BumpMemoryID(); 2149 2150 // We need to write any data that would go where any current software traps 2151 // (enabled software breakpoints) any software traps (breakpoints) that we 2152 // may have placed in our tasks memory. 2153 2154 BreakpointSiteList::collection::const_iterator iter = m_breakpoint_site_list.GetMap()->lower_bound (addr); 2155 BreakpointSiteList::collection::const_iterator end = m_breakpoint_site_list.GetMap()->end(); 2156 2157 if (iter == end || iter->second->GetLoadAddress() > addr + size) 2158 return WriteMemoryPrivate (addr, buf, size, error); 2159 2160 BreakpointSiteList::collection::const_iterator pos; 2161 size_t bytes_written = 0; 2162 addr_t intersect_addr = 0; 2163 size_t intersect_size = 0; 2164 size_t opcode_offset = 0; 2165 const uint8_t *ubuf = (const uint8_t *)buf; 2166 2167 for (pos = iter; pos != end; ++pos) 2168 { 2169 BreakpointSiteSP bp; 2170 bp = pos->second; 2171 2172 assert(bp->IntersectsRange(addr, size, &intersect_addr, &intersect_size, &opcode_offset)); 2173 assert(addr <= intersect_addr && intersect_addr < addr + size); 2174 assert(addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= addr + size); 2175 assert(opcode_offset + intersect_size <= bp->GetByteSize()); 2176 2177 // Check for bytes before this breakpoint 2178 const addr_t curr_addr = addr + bytes_written; 2179 if (intersect_addr > curr_addr) 2180 { 2181 // There are some bytes before this breakpoint that we need to 2182 // just write to memory 2183 size_t curr_size = intersect_addr - curr_addr; 2184 size_t curr_bytes_written = WriteMemoryPrivate (curr_addr, 2185 ubuf + bytes_written, 2186 curr_size, 2187 error); 2188 bytes_written += curr_bytes_written; 2189 if (curr_bytes_written != curr_size) 2190 { 2191 // We weren't able to write all of the requested bytes, we 2192 // are done looping and will return the number of bytes that 2193 // we have written so far. 2194 break; 2195 } 2196 } 2197 2198 // Now write any bytes that would cover up any software breakpoints 2199 // directly into the breakpoint opcode buffer 2200 ::memcpy(bp->GetSavedOpcodeBytes() + opcode_offset, ubuf + bytes_written, intersect_size); 2201 bytes_written += intersect_size; 2202 } 2203 2204 // Write any remaining bytes after the last breakpoint if we have any left 2205 if (bytes_written < size) 2206 bytes_written += WriteMemoryPrivate (addr + bytes_written, 2207 ubuf + bytes_written, 2208 size - bytes_written, 2209 error); 2210 2211 return bytes_written; 2212 } 2213 2214 size_t 2215 Process::WriteScalarToMemory (addr_t addr, const Scalar &scalar, uint32_t byte_size, Error &error) 2216 { 2217 if (byte_size == UINT32_MAX) 2218 byte_size = scalar.GetByteSize(); 2219 if (byte_size > 0) 2220 { 2221 uint8_t buf[32]; 2222 const size_t mem_size = scalar.GetAsMemoryData (buf, byte_size, GetByteOrder(), error); 2223 if (mem_size > 0) 2224 return WriteMemory(addr, buf, mem_size, error); 2225 else 2226 error.SetErrorString ("failed to get scalar as memory data"); 2227 } 2228 else 2229 { 2230 error.SetErrorString ("invalid scalar value"); 2231 } 2232 return 0; 2233 } 2234 2235 size_t 2236 Process::ReadScalarIntegerFromMemory (addr_t addr, 2237 uint32_t byte_size, 2238 bool is_signed, 2239 Scalar &scalar, 2240 Error &error) 2241 { 2242 uint64_t uval; 2243 2244 if (byte_size <= sizeof(uval)) 2245 { 2246 size_t bytes_read = ReadMemory (addr, &uval, byte_size, error); 2247 if (bytes_read == byte_size) 2248 { 2249 DataExtractor data (&uval, sizeof(uval), GetByteOrder(), GetAddressByteSize()); 2250 uint32_t offset = 0; 2251 if (byte_size <= 4) 2252 scalar = data.GetMaxU32 (&offset, byte_size); 2253 else 2254 scalar = data.GetMaxU64 (&offset, byte_size); 2255 2256 if (is_signed) 2257 scalar.SignExtend(byte_size * 8); 2258 return bytes_read; 2259 } 2260 } 2261 else 2262 { 2263 error.SetErrorStringWithFormat ("byte size of %u is too large for integer scalar type", byte_size); 2264 } 2265 return 0; 2266 } 2267 2268 #define USE_ALLOCATE_MEMORY_CACHE 1 2269 addr_t 2270 Process::AllocateMemory(size_t size, uint32_t permissions, Error &error) 2271 { 2272 if (GetPrivateState() != eStateStopped) 2273 return LLDB_INVALID_ADDRESS; 2274 2275 #if defined (USE_ALLOCATE_MEMORY_CACHE) 2276 return m_allocated_memory_cache.AllocateMemory(size, permissions, error); 2277 #else 2278 addr_t allocated_addr = DoAllocateMemory (size, permissions, error); 2279 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2280 if (log) 2281 log->Printf("Process::AllocateMemory(size=%4zu, permissions=%s) => 0x%16.16llx (m_stop_id = %u m_memory_id = %u)", 2282 size, 2283 GetPermissionsAsCString (permissions), 2284 (uint64_t)allocated_addr, 2285 m_mod_id.GetStopID(), 2286 m_mod_id.GetMemoryID()); 2287 return allocated_addr; 2288 #endif 2289 } 2290 2291 bool 2292 Process::CanJIT () 2293 { 2294 if (m_can_jit == eCanJITDontKnow) 2295 { 2296 Error err; 2297 2298 uint64_t allocated_memory = AllocateMemory(8, 2299 ePermissionsReadable | ePermissionsWritable | ePermissionsExecutable, 2300 err); 2301 2302 if (err.Success()) 2303 m_can_jit = eCanJITYes; 2304 else 2305 m_can_jit = eCanJITNo; 2306 2307 DeallocateMemory (allocated_memory); 2308 } 2309 2310 return m_can_jit == eCanJITYes; 2311 } 2312 2313 void 2314 Process::SetCanJIT (bool can_jit) 2315 { 2316 m_can_jit = (can_jit ? eCanJITYes : eCanJITNo); 2317 } 2318 2319 Error 2320 Process::DeallocateMemory (addr_t ptr) 2321 { 2322 Error error; 2323 #if defined (USE_ALLOCATE_MEMORY_CACHE) 2324 if (!m_allocated_memory_cache.DeallocateMemory(ptr)) 2325 { 2326 error.SetErrorStringWithFormat ("deallocation of memory at 0x%llx failed.", (uint64_t)ptr); 2327 } 2328 #else 2329 error = DoDeallocateMemory (ptr); 2330 2331 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2332 if (log) 2333 log->Printf("Process::DeallocateMemory(addr=0x%16.16llx) => err = %s (m_stop_id = %u, m_memory_id = %u)", 2334 ptr, 2335 error.AsCString("SUCCESS"), 2336 m_mod_id.GetStopID(), 2337 m_mod_id.GetMemoryID()); 2338 #endif 2339 return error; 2340 } 2341 2342 ModuleSP 2343 Process::ReadModuleFromMemory (const FileSpec& file_spec, 2344 lldb::addr_t header_addr, 2345 bool add_image_to_target, 2346 bool load_sections_in_target) 2347 { 2348 ModuleSP module_sp (new Module (file_spec, ArchSpec())); 2349 if (module_sp) 2350 { 2351 Error error; 2352 ObjectFile *objfile = module_sp->GetMemoryObjectFile (shared_from_this(), header_addr, error); 2353 if (objfile) 2354 { 2355 if (add_image_to_target) 2356 { 2357 m_target.GetImages().Append(module_sp); 2358 if (load_sections_in_target) 2359 { 2360 bool changed = false; 2361 module_sp->SetLoadAddress (m_target, 0, changed); 2362 } 2363 } 2364 return module_sp; 2365 } 2366 } 2367 return ModuleSP(); 2368 } 2369 2370 Error 2371 Process::EnableWatchpoint (Watchpoint *watchpoint) 2372 { 2373 Error error; 2374 error.SetErrorString("watchpoints are not supported"); 2375 return error; 2376 } 2377 2378 Error 2379 Process::DisableWatchpoint (Watchpoint *watchpoint) 2380 { 2381 Error error; 2382 error.SetErrorString("watchpoints are not supported"); 2383 return error; 2384 } 2385 2386 StateType 2387 Process::WaitForProcessStopPrivate (const TimeValue *timeout, EventSP &event_sp) 2388 { 2389 StateType state; 2390 // Now wait for the process to launch and return control to us, and then 2391 // call DidLaunch: 2392 while (1) 2393 { 2394 event_sp.reset(); 2395 state = WaitForStateChangedEventsPrivate (timeout, event_sp); 2396 2397 if (StateIsStoppedState(state, false)) 2398 break; 2399 2400 // If state is invalid, then we timed out 2401 if (state == eStateInvalid) 2402 break; 2403 2404 if (event_sp) 2405 HandlePrivateEvent (event_sp); 2406 } 2407 return state; 2408 } 2409 2410 Error 2411 Process::Launch (const ProcessLaunchInfo &launch_info) 2412 { 2413 Error error; 2414 m_abi_sp.reset(); 2415 m_dyld_ap.reset(); 2416 m_os_ap.reset(); 2417 m_process_input_reader.reset(); 2418 2419 Module *exe_module = m_target.GetExecutableModulePointer(); 2420 if (exe_module) 2421 { 2422 char local_exec_file_path[PATH_MAX]; 2423 char platform_exec_file_path[PATH_MAX]; 2424 exe_module->GetFileSpec().GetPath(local_exec_file_path, sizeof(local_exec_file_path)); 2425 exe_module->GetPlatformFileSpec().GetPath(platform_exec_file_path, sizeof(platform_exec_file_path)); 2426 if (exe_module->GetFileSpec().Exists()) 2427 { 2428 if (PrivateStateThreadIsValid ()) 2429 PausePrivateStateThread (); 2430 2431 error = WillLaunch (exe_module); 2432 if (error.Success()) 2433 { 2434 SetPublicState (eStateLaunching); 2435 m_should_detach = false; 2436 2437 // Now launch using these arguments. 2438 error = DoLaunch (exe_module, launch_info); 2439 2440 if (error.Fail()) 2441 { 2442 if (GetID() != LLDB_INVALID_PROCESS_ID) 2443 { 2444 SetID (LLDB_INVALID_PROCESS_ID); 2445 const char *error_string = error.AsCString(); 2446 if (error_string == NULL) 2447 error_string = "launch failed"; 2448 SetExitStatus (-1, error_string); 2449 } 2450 } 2451 else 2452 { 2453 EventSP event_sp; 2454 TimeValue timeout_time; 2455 timeout_time = TimeValue::Now(); 2456 timeout_time.OffsetWithSeconds(10); 2457 StateType state = WaitForProcessStopPrivate(&timeout_time, event_sp); 2458 2459 if (state == eStateInvalid || event_sp.get() == NULL) 2460 { 2461 // We were able to launch the process, but we failed to 2462 // catch the initial stop. 2463 SetExitStatus (0, "failed to catch stop after launch"); 2464 Destroy(); 2465 } 2466 else if (state == eStateStopped || state == eStateCrashed) 2467 { 2468 2469 DidLaunch (); 2470 2471 DynamicLoader *dyld = GetDynamicLoader (); 2472 if (dyld) 2473 dyld->DidLaunch(); 2474 2475 m_os_ap.reset (OperatingSystem::FindPlugin (this, NULL)); 2476 // This delays passing the stopped event to listeners till DidLaunch gets 2477 // a chance to complete... 2478 HandlePrivateEvent (event_sp); 2479 2480 if (PrivateStateThreadIsValid ()) 2481 ResumePrivateStateThread (); 2482 else 2483 StartPrivateStateThread (); 2484 } 2485 else if (state == eStateExited) 2486 { 2487 // We exited while trying to launch somehow. Don't call DidLaunch as that's 2488 // not likely to work, and return an invalid pid. 2489 HandlePrivateEvent (event_sp); 2490 } 2491 } 2492 } 2493 } 2494 else 2495 { 2496 error.SetErrorStringWithFormat("file doesn't exist: '%s'", local_exec_file_path); 2497 } 2498 } 2499 return error; 2500 } 2501 2502 2503 Error 2504 Process::LoadCore () 2505 { 2506 Error error = DoLoadCore(); 2507 if (error.Success()) 2508 { 2509 if (PrivateStateThreadIsValid ()) 2510 ResumePrivateStateThread (); 2511 else 2512 StartPrivateStateThread (); 2513 2514 DynamicLoader *dyld = GetDynamicLoader (); 2515 if (dyld) 2516 dyld->DidAttach(); 2517 2518 m_os_ap.reset (OperatingSystem::FindPlugin (this, NULL)); 2519 // We successfully loaded a core file, now pretend we stopped so we can 2520 // show all of the threads in the core file and explore the crashed 2521 // state. 2522 SetPrivateState (eStateStopped); 2523 2524 } 2525 return error; 2526 } 2527 2528 DynamicLoader * 2529 Process::GetDynamicLoader () 2530 { 2531 if (m_dyld_ap.get() == NULL) 2532 m_dyld_ap.reset (DynamicLoader::FindPlugin(this, NULL)); 2533 return m_dyld_ap.get(); 2534 } 2535 2536 2537 Process::NextEventAction::EventActionResult 2538 Process::AttachCompletionHandler::PerformAction (lldb::EventSP &event_sp) 2539 { 2540 StateType state = ProcessEventData::GetStateFromEvent (event_sp.get()); 2541 switch (state) 2542 { 2543 case eStateRunning: 2544 case eStateConnected: 2545 return eEventActionRetry; 2546 2547 case eStateStopped: 2548 case eStateCrashed: 2549 { 2550 // During attach, prior to sending the eStateStopped event, 2551 // lldb_private::Process subclasses must set the new process ID. 2552 assert (m_process->GetID() != LLDB_INVALID_PROCESS_ID); 2553 if (m_exec_count > 0) 2554 { 2555 --m_exec_count; 2556 m_process->PrivateResume (); 2557 Process::ProcessEventData::SetRestartedInEvent (event_sp.get(), true); 2558 return eEventActionRetry; 2559 } 2560 else 2561 { 2562 m_process->CompleteAttach (); 2563 return eEventActionSuccess; 2564 } 2565 } 2566 break; 2567 2568 default: 2569 case eStateExited: 2570 case eStateInvalid: 2571 break; 2572 } 2573 2574 m_exit_string.assign ("No valid Process"); 2575 return eEventActionExit; 2576 } 2577 2578 Process::NextEventAction::EventActionResult 2579 Process::AttachCompletionHandler::HandleBeingInterrupted() 2580 { 2581 return eEventActionSuccess; 2582 } 2583 2584 const char * 2585 Process::AttachCompletionHandler::GetExitString () 2586 { 2587 return m_exit_string.c_str(); 2588 } 2589 2590 Error 2591 Process::Attach (ProcessAttachInfo &attach_info) 2592 { 2593 m_abi_sp.reset(); 2594 m_process_input_reader.reset(); 2595 m_dyld_ap.reset(); 2596 m_os_ap.reset(); 2597 2598 lldb::pid_t attach_pid = attach_info.GetProcessID(); 2599 Error error; 2600 if (attach_pid == LLDB_INVALID_PROCESS_ID) 2601 { 2602 char process_name[PATH_MAX]; 2603 2604 if (attach_info.GetExecutableFile().GetPath (process_name, sizeof(process_name))) 2605 { 2606 const bool wait_for_launch = attach_info.GetWaitForLaunch(); 2607 2608 if (wait_for_launch) 2609 { 2610 error = WillAttachToProcessWithName(process_name, wait_for_launch); 2611 if (error.Success()) 2612 { 2613 m_should_detach = true; 2614 2615 SetPublicState (eStateAttaching); 2616 error = DoAttachToProcessWithName (process_name, wait_for_launch, attach_info); 2617 if (error.Fail()) 2618 { 2619 if (GetID() != LLDB_INVALID_PROCESS_ID) 2620 { 2621 SetID (LLDB_INVALID_PROCESS_ID); 2622 if (error.AsCString() == NULL) 2623 error.SetErrorString("attach failed"); 2624 2625 SetExitStatus(-1, error.AsCString()); 2626 } 2627 } 2628 else 2629 { 2630 SetNextEventAction(new Process::AttachCompletionHandler(this, attach_info.GetResumeCount())); 2631 StartPrivateStateThread(); 2632 } 2633 return error; 2634 } 2635 } 2636 else 2637 { 2638 ProcessInstanceInfoList process_infos; 2639 PlatformSP platform_sp (m_target.GetPlatform ()); 2640 2641 if (platform_sp) 2642 { 2643 ProcessInstanceInfoMatch match_info; 2644 match_info.GetProcessInfo() = attach_info; 2645 match_info.SetNameMatchType (eNameMatchEquals); 2646 platform_sp->FindProcesses (match_info, process_infos); 2647 const uint32_t num_matches = process_infos.GetSize(); 2648 if (num_matches == 1) 2649 { 2650 attach_pid = process_infos.GetProcessIDAtIndex(0); 2651 // Fall through and attach using the above process ID 2652 } 2653 else 2654 { 2655 match_info.GetProcessInfo().GetExecutableFile().GetPath (process_name, sizeof(process_name)); 2656 if (num_matches > 1) 2657 error.SetErrorStringWithFormat ("more than one process named %s", process_name); 2658 else 2659 error.SetErrorStringWithFormat ("could not find a process named %s", process_name); 2660 } 2661 } 2662 else 2663 { 2664 error.SetErrorString ("invalid platform, can't find processes by name"); 2665 return error; 2666 } 2667 } 2668 } 2669 else 2670 { 2671 error.SetErrorString ("invalid process name"); 2672 } 2673 } 2674 2675 if (attach_pid != LLDB_INVALID_PROCESS_ID) 2676 { 2677 error = WillAttachToProcessWithID(attach_pid); 2678 if (error.Success()) 2679 { 2680 m_should_detach = true; 2681 SetPublicState (eStateAttaching); 2682 2683 error = DoAttachToProcessWithID (attach_pid, attach_info); 2684 if (error.Success()) 2685 { 2686 2687 SetNextEventAction(new Process::AttachCompletionHandler(this, attach_info.GetResumeCount())); 2688 StartPrivateStateThread(); 2689 } 2690 else 2691 { 2692 if (GetID() != LLDB_INVALID_PROCESS_ID) 2693 { 2694 SetID (LLDB_INVALID_PROCESS_ID); 2695 const char *error_string = error.AsCString(); 2696 if (error_string == NULL) 2697 error_string = "attach failed"; 2698 2699 SetExitStatus(-1, error_string); 2700 } 2701 } 2702 } 2703 } 2704 return error; 2705 } 2706 2707 //Error 2708 //Process::Attach (const char *process_name, bool wait_for_launch) 2709 //{ 2710 // m_abi_sp.reset(); 2711 // m_process_input_reader.reset(); 2712 // 2713 // // Find the process and its architecture. Make sure it matches the architecture 2714 // // of the current Target, and if not adjust it. 2715 // Error error; 2716 // 2717 // if (!wait_for_launch) 2718 // { 2719 // ProcessInstanceInfoList process_infos; 2720 // PlatformSP platform_sp (m_target.GetPlatform ()); 2721 // assert (platform_sp.get()); 2722 // 2723 // if (platform_sp) 2724 // { 2725 // ProcessInstanceInfoMatch match_info; 2726 // match_info.GetProcessInfo().SetName(process_name); 2727 // match_info.SetNameMatchType (eNameMatchEquals); 2728 // platform_sp->FindProcesses (match_info, process_infos); 2729 // if (process_infos.GetSize() > 1) 2730 // { 2731 // error.SetErrorStringWithFormat ("more than one process named %s", process_name); 2732 // } 2733 // else if (process_infos.GetSize() == 0) 2734 // { 2735 // error.SetErrorStringWithFormat ("could not find a process named %s", process_name); 2736 // } 2737 // } 2738 // else 2739 // { 2740 // error.SetErrorString ("invalid platform"); 2741 // } 2742 // } 2743 // 2744 // if (error.Success()) 2745 // { 2746 // m_dyld_ap.reset(); 2747 // m_os_ap.reset(); 2748 // 2749 // error = WillAttachToProcessWithName(process_name, wait_for_launch); 2750 // if (error.Success()) 2751 // { 2752 // SetPublicState (eStateAttaching); 2753 // error = DoAttachToProcessWithName (process_name, wait_for_launch); 2754 // if (error.Fail()) 2755 // { 2756 // if (GetID() != LLDB_INVALID_PROCESS_ID) 2757 // { 2758 // SetID (LLDB_INVALID_PROCESS_ID); 2759 // const char *error_string = error.AsCString(); 2760 // if (error_string == NULL) 2761 // error_string = "attach failed"; 2762 // 2763 // SetExitStatus(-1, error_string); 2764 // } 2765 // } 2766 // else 2767 // { 2768 // SetNextEventAction(new Process::AttachCompletionHandler(this, 0)); 2769 // StartPrivateStateThread(); 2770 // } 2771 // } 2772 // } 2773 // return error; 2774 //} 2775 2776 void 2777 Process::CompleteAttach () 2778 { 2779 // Let the process subclass figure out at much as it can about the process 2780 // before we go looking for a dynamic loader plug-in. 2781 DidAttach(); 2782 2783 // We just attached. If we have a platform, ask it for the process architecture, and if it isn't 2784 // the same as the one we've already set, switch architectures. 2785 PlatformSP platform_sp (m_target.GetPlatform ()); 2786 assert (platform_sp.get()); 2787 if (platform_sp) 2788 { 2789 const ArchSpec &target_arch = m_target.GetArchitecture(); 2790 if (target_arch.IsValid() && !platform_sp->IsCompatibleArchitecture (target_arch)) 2791 { 2792 ArchSpec platform_arch; 2793 platform_sp = platform_sp->GetPlatformForArchitecture (target_arch, &platform_arch); 2794 if (platform_sp) 2795 { 2796 m_target.SetPlatform (platform_sp); 2797 m_target.SetArchitecture(platform_arch); 2798 } 2799 } 2800 else 2801 { 2802 ProcessInstanceInfo process_info; 2803 platform_sp->GetProcessInfo (GetID(), process_info); 2804 const ArchSpec &process_arch = process_info.GetArchitecture(); 2805 if (process_arch.IsValid() && m_target.GetArchitecture() != process_arch) 2806 m_target.SetArchitecture (process_arch); 2807 } 2808 } 2809 2810 // We have completed the attach, now it is time to find the dynamic loader 2811 // plug-in 2812 DynamicLoader *dyld = GetDynamicLoader (); 2813 if (dyld) 2814 dyld->DidAttach(); 2815 2816 m_os_ap.reset (OperatingSystem::FindPlugin (this, NULL)); 2817 // Figure out which one is the executable, and set that in our target: 2818 ModuleList &target_modules = m_target.GetImages(); 2819 Mutex::Locker modules_locker(target_modules.GetMutex()); 2820 size_t num_modules = target_modules.GetSize(); 2821 ModuleSP new_executable_module_sp; 2822 2823 for (int i = 0; i < num_modules; i++) 2824 { 2825 ModuleSP module_sp (target_modules.GetModuleAtIndexUnlocked (i)); 2826 if (module_sp && module_sp->IsExecutable()) 2827 { 2828 if (m_target.GetExecutableModulePointer() != module_sp.get()) 2829 new_executable_module_sp = module_sp; 2830 break; 2831 } 2832 } 2833 if (new_executable_module_sp) 2834 m_target.SetExecutableModule (new_executable_module_sp, false); 2835 } 2836 2837 Error 2838 Process::ConnectRemote (const char *remote_url) 2839 { 2840 m_abi_sp.reset(); 2841 m_process_input_reader.reset(); 2842 2843 // Find the process and its architecture. Make sure it matches the architecture 2844 // of the current Target, and if not adjust it. 2845 2846 Error error (DoConnectRemote (remote_url)); 2847 if (error.Success()) 2848 { 2849 if (GetID() != LLDB_INVALID_PROCESS_ID) 2850 { 2851 EventSP event_sp; 2852 StateType state = WaitForProcessStopPrivate(NULL, event_sp); 2853 2854 if (state == eStateStopped || state == eStateCrashed) 2855 { 2856 // If we attached and actually have a process on the other end, then 2857 // this ended up being the equivalent of an attach. 2858 CompleteAttach (); 2859 2860 // This delays passing the stopped event to listeners till 2861 // CompleteAttach gets a chance to complete... 2862 HandlePrivateEvent (event_sp); 2863 2864 } 2865 } 2866 2867 if (PrivateStateThreadIsValid ()) 2868 ResumePrivateStateThread (); 2869 else 2870 StartPrivateStateThread (); 2871 } 2872 return error; 2873 } 2874 2875 2876 Error 2877 Process::PrivateResume () 2878 { 2879 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2880 if (log) 2881 log->Printf("Process::Resume() m_stop_id = %u, public state: %s private state: %s", 2882 m_mod_id.GetStopID(), 2883 StateAsCString(m_public_state.GetValue()), 2884 StateAsCString(m_private_state.GetValue())); 2885 2886 Error error (WillResume()); 2887 // Tell the process it is about to resume before the thread list 2888 if (error.Success()) 2889 { 2890 // Now let the thread list know we are about to resume so it 2891 // can let all of our threads know that they are about to be 2892 // resumed. Threads will each be called with 2893 // Thread::WillResume(StateType) where StateType contains the state 2894 // that they are supposed to have when the process is resumed 2895 // (suspended/running/stepping). Threads should also check 2896 // their resume signal in lldb::Thread::GetResumeSignal() 2897 // to see if they are suppoed to start back up with a signal. 2898 if (m_thread_list.WillResume()) 2899 { 2900 // Last thing, do the PreResumeActions. 2901 if (!RunPreResumeActions()) 2902 { 2903 error.SetErrorStringWithFormat ("Process::Resume PreResumeActions failed, not resuming."); 2904 } 2905 else 2906 { 2907 m_mod_id.BumpResumeID(); 2908 error = DoResume(); 2909 if (error.Success()) 2910 { 2911 DidResume(); 2912 m_thread_list.DidResume(); 2913 if (log) 2914 log->Printf ("Process thinks the process has resumed."); 2915 } 2916 } 2917 } 2918 else 2919 { 2920 error.SetErrorStringWithFormat("Process::WillResume() thread list returned false after WillResume"); 2921 } 2922 } 2923 else if (log) 2924 log->Printf ("Process::WillResume() got an error \"%s\".", error.AsCString("<unknown error>")); 2925 return error; 2926 } 2927 2928 Error 2929 Process::Halt () 2930 { 2931 // First make sure we aren't in the middle of handling an event, or we might restart. This is pretty weak, since 2932 // we could just straightaway get another event. It just narrows the window... 2933 m_currently_handling_event.WaitForValueEqualTo(false); 2934 2935 2936 // Pause our private state thread so we can ensure no one else eats 2937 // the stop event out from under us. 2938 Listener halt_listener ("lldb.process.halt_listener"); 2939 HijackPrivateProcessEvents(&halt_listener); 2940 2941 EventSP event_sp; 2942 Error error (WillHalt()); 2943 2944 if (error.Success()) 2945 { 2946 2947 bool caused_stop = false; 2948 2949 // Ask the process subclass to actually halt our process 2950 error = DoHalt(caused_stop); 2951 if (error.Success()) 2952 { 2953 if (m_public_state.GetValue() == eStateAttaching) 2954 { 2955 SetExitStatus(SIGKILL, "Cancelled async attach."); 2956 Destroy (); 2957 } 2958 else 2959 { 2960 // If "caused_stop" is true, then DoHalt stopped the process. If 2961 // "caused_stop" is false, the process was already stopped. 2962 // If the DoHalt caused the process to stop, then we want to catch 2963 // this event and set the interrupted bool to true before we pass 2964 // this along so clients know that the process was interrupted by 2965 // a halt command. 2966 if (caused_stop) 2967 { 2968 // Wait for 1 second for the process to stop. 2969 TimeValue timeout_time; 2970 timeout_time = TimeValue::Now(); 2971 timeout_time.OffsetWithSeconds(1); 2972 bool got_event = halt_listener.WaitForEvent (&timeout_time, event_sp); 2973 StateType state = ProcessEventData::GetStateFromEvent(event_sp.get()); 2974 2975 if (!got_event || state == eStateInvalid) 2976 { 2977 // We timeout out and didn't get a stop event... 2978 error.SetErrorStringWithFormat ("Halt timed out. State = %s", StateAsCString(GetState())); 2979 } 2980 else 2981 { 2982 if (StateIsStoppedState (state, false)) 2983 { 2984 // We caused the process to interrupt itself, so mark this 2985 // as such in the stop event so clients can tell an interrupted 2986 // process from a natural stop 2987 ProcessEventData::SetInterruptedInEvent (event_sp.get(), true); 2988 } 2989 else 2990 { 2991 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 2992 if (log) 2993 log->Printf("Process::Halt() failed to stop, state is: %s", StateAsCString(state)); 2994 error.SetErrorString ("Did not get stopped event after halt."); 2995 } 2996 } 2997 } 2998 DidHalt(); 2999 } 3000 } 3001 } 3002 // Resume our private state thread before we post the event (if any) 3003 RestorePrivateProcessEvents(); 3004 3005 // Post any event we might have consumed. If all goes well, we will have 3006 // stopped the process, intercepted the event and set the interrupted 3007 // bool in the event. Post it to the private event queue and that will end up 3008 // correctly setting the state. 3009 if (event_sp) 3010 m_private_state_broadcaster.BroadcastEvent(event_sp); 3011 3012 return error; 3013 } 3014 3015 Error 3016 Process::Detach () 3017 { 3018 Error error (WillDetach()); 3019 3020 if (error.Success()) 3021 { 3022 DisableAllBreakpointSites(); 3023 error = DoDetach(); 3024 if (error.Success()) 3025 { 3026 DidDetach(); 3027 StopPrivateStateThread(); 3028 } 3029 } 3030 return error; 3031 } 3032 3033 Error 3034 Process::Destroy () 3035 { 3036 Error error (WillDestroy()); 3037 if (error.Success()) 3038 { 3039 if (m_public_state.GetValue() == eStateRunning) 3040 { 3041 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_TEMPORARY)); 3042 if (log) 3043 log->Printf("Process::Destroy() About to halt."); 3044 error = Halt(); 3045 if (error.Success()) 3046 { 3047 // Consume the halt event. 3048 EventSP stop_event; 3049 TimeValue timeout (TimeValue::Now()); 3050 timeout.OffsetWithSeconds(1); 3051 StateType state = WaitForProcessToStop (&timeout); 3052 if (state != eStateStopped) 3053 { 3054 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_TEMPORARY)); 3055 if (log) 3056 log->Printf("Process::Destroy() Halt failed to stop, state is: %s", StateAsCString(state)); 3057 // If we really couldn't stop the process then we should just error out here, but if the 3058 // lower levels just bobbled sending the event and we really are stopped, then continue on. 3059 StateType private_state = m_private_state.GetValue(); 3060 if (private_state != eStateStopped && private_state != eStateExited) 3061 { 3062 return error; 3063 } 3064 } 3065 } 3066 else 3067 { 3068 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_TEMPORARY)); 3069 if (log) 3070 log->Printf("Process::Destroy() Halt got error: %s", error.AsCString()); 3071 return error; 3072 } 3073 } 3074 3075 if (m_public_state.GetValue() != eStateRunning) 3076 { 3077 // Ditch all thread plans, and remove all our breakpoints: in case we have to restart the target to 3078 // kill it, we don't want it hitting a breakpoint... 3079 // Only do this if we've stopped, however, since if we didn't manage to halt it above, then 3080 // we're not going to have much luck doing this now. 3081 m_thread_list.DiscardThreadPlans(); 3082 DisableAllBreakpointSites(); 3083 } 3084 3085 error = DoDestroy(); 3086 if (error.Success()) 3087 { 3088 DidDestroy(); 3089 StopPrivateStateThread(); 3090 } 3091 m_stdio_communication.StopReadThread(); 3092 m_stdio_communication.Disconnect(); 3093 if (m_process_input_reader && m_process_input_reader->IsActive()) 3094 m_target.GetDebugger().PopInputReader (m_process_input_reader); 3095 if (m_process_input_reader) 3096 m_process_input_reader.reset(); 3097 3098 // If we have been interrupted (to kill us) in the middle of running, we may not end up propagating 3099 // the last events through the event system, in which case we might strand the write lock. Unlock 3100 // it here so when we do to tear down the process we don't get an error destroying the lock. 3101 m_run_lock.WriteUnlock(); 3102 } 3103 return error; 3104 } 3105 3106 Error 3107 Process::Signal (int signal) 3108 { 3109 Error error (WillSignal()); 3110 if (error.Success()) 3111 { 3112 error = DoSignal(signal); 3113 if (error.Success()) 3114 DidSignal(); 3115 } 3116 return error; 3117 } 3118 3119 lldb::ByteOrder 3120 Process::GetByteOrder () const 3121 { 3122 return m_target.GetArchitecture().GetByteOrder(); 3123 } 3124 3125 uint32_t 3126 Process::GetAddressByteSize () const 3127 { 3128 return m_target.GetArchitecture().GetAddressByteSize(); 3129 } 3130 3131 3132 bool 3133 Process::ShouldBroadcastEvent (Event *event_ptr) 3134 { 3135 const StateType state = Process::ProcessEventData::GetStateFromEvent (event_ptr); 3136 bool return_value = true; 3137 LogSP log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS)); 3138 3139 switch (state) 3140 { 3141 case eStateConnected: 3142 case eStateAttaching: 3143 case eStateLaunching: 3144 case eStateDetached: 3145 case eStateExited: 3146 case eStateUnloaded: 3147 // These events indicate changes in the state of the debugging session, always report them. 3148 return_value = true; 3149 break; 3150 case eStateInvalid: 3151 // We stopped for no apparent reason, don't report it. 3152 return_value = false; 3153 break; 3154 case eStateRunning: 3155 case eStateStepping: 3156 // If we've started the target running, we handle the cases where we 3157 // are already running and where there is a transition from stopped to 3158 // running differently. 3159 // running -> running: Automatically suppress extra running events 3160 // stopped -> running: Report except when there is one or more no votes 3161 // and no yes votes. 3162 SynchronouslyNotifyStateChanged (state); 3163 switch (m_public_state.GetValue()) 3164 { 3165 case eStateRunning: 3166 case eStateStepping: 3167 // We always suppress multiple runnings with no PUBLIC stop in between. 3168 return_value = false; 3169 break; 3170 default: 3171 // TODO: make this work correctly. For now always report 3172 // run if we aren't running so we don't miss any runnning 3173 // events. If I run the lldb/test/thread/a.out file and 3174 // break at main.cpp:58, run and hit the breakpoints on 3175 // multiple threads, then somehow during the stepping over 3176 // of all breakpoints no run gets reported. 3177 return_value = true; 3178 3179 // This is a transition from stop to run. 3180 switch (m_thread_list.ShouldReportRun (event_ptr)) 3181 { 3182 case eVoteYes: 3183 case eVoteNoOpinion: 3184 return_value = true; 3185 break; 3186 case eVoteNo: 3187 return_value = false; 3188 break; 3189 } 3190 break; 3191 } 3192 break; 3193 case eStateStopped: 3194 case eStateCrashed: 3195 case eStateSuspended: 3196 { 3197 // We've stopped. First see if we're going to restart the target. 3198 // If we are going to stop, then we always broadcast the event. 3199 // If we aren't going to stop, let the thread plans decide if we're going to report this event. 3200 // If no thread has an opinion, we don't report it. 3201 3202 RefreshStateAfterStop (); 3203 if (ProcessEventData::GetInterruptedFromEvent (event_ptr)) 3204 { 3205 if (log) 3206 log->Printf ("Process::ShouldBroadcastEvent (%p) stopped due to an interrupt, state: %s", event_ptr, StateAsCString(state)); 3207 return true; 3208 } 3209 else 3210 { 3211 3212 if (m_thread_list.ShouldStop (event_ptr) == false) 3213 { 3214 switch (m_thread_list.ShouldReportStop (event_ptr)) 3215 { 3216 case eVoteYes: 3217 Process::ProcessEventData::SetRestartedInEvent (event_ptr, true); 3218 // Intentional fall-through here. 3219 case eVoteNoOpinion: 3220 case eVoteNo: 3221 return_value = false; 3222 break; 3223 } 3224 3225 if (log) 3226 log->Printf ("Process::ShouldBroadcastEvent (%p) Restarting process from state: %s", event_ptr, StateAsCString(state)); 3227 PrivateResume (); 3228 } 3229 else 3230 { 3231 return_value = true; 3232 SynchronouslyNotifyStateChanged (state); 3233 } 3234 } 3235 } 3236 } 3237 3238 if (log) 3239 log->Printf ("Process::ShouldBroadcastEvent (%p) => %s - %s", event_ptr, StateAsCString(state), return_value ? "YES" : "NO"); 3240 return return_value; 3241 } 3242 3243 3244 bool 3245 Process::StartPrivateStateThread (bool force) 3246 { 3247 LogSP log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS)); 3248 3249 bool already_running = PrivateStateThreadIsValid (); 3250 if (log) 3251 log->Printf ("Process::%s()%s ", __FUNCTION__, already_running ? " already running" : " starting private state thread"); 3252 3253 if (!force && already_running) 3254 return true; 3255 3256 // Create a thread that watches our internal state and controls which 3257 // events make it to clients (into the DCProcess event queue). 3258 char thread_name[1024]; 3259 if (already_running) 3260 snprintf(thread_name, sizeof(thread_name), "<lldb.process.internal-state-override(pid=%llu)>", GetID()); 3261 else 3262 snprintf(thread_name, sizeof(thread_name), "<lldb.process.internal-state(pid=%llu)>", GetID()); 3263 3264 // Create the private state thread, and start it running. 3265 m_private_state_thread = Host::ThreadCreate (thread_name, Process::PrivateStateThread, this, NULL); 3266 bool success = IS_VALID_LLDB_HOST_THREAD(m_private_state_thread); 3267 if (success) 3268 { 3269 ResumePrivateStateThread(); 3270 return true; 3271 } 3272 else 3273 return false; 3274 } 3275 3276 void 3277 Process::PausePrivateStateThread () 3278 { 3279 ControlPrivateStateThread (eBroadcastInternalStateControlPause); 3280 } 3281 3282 void 3283 Process::ResumePrivateStateThread () 3284 { 3285 ControlPrivateStateThread (eBroadcastInternalStateControlResume); 3286 } 3287 3288 void 3289 Process::StopPrivateStateThread () 3290 { 3291 if (PrivateStateThreadIsValid ()) 3292 ControlPrivateStateThread (eBroadcastInternalStateControlStop); 3293 else 3294 { 3295 LogSP log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); 3296 if (log) 3297 printf ("Went to stop the private state thread, but it was already invalid."); 3298 } 3299 } 3300 3301 void 3302 Process::ControlPrivateStateThread (uint32_t signal) 3303 { 3304 LogSP log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); 3305 3306 assert (signal == eBroadcastInternalStateControlStop || 3307 signal == eBroadcastInternalStateControlPause || 3308 signal == eBroadcastInternalStateControlResume); 3309 3310 if (log) 3311 log->Printf ("Process::%s (signal = %d)", __FUNCTION__, signal); 3312 3313 // Signal the private state thread. First we should copy this is case the 3314 // thread starts exiting since the private state thread will NULL this out 3315 // when it exits 3316 const lldb::thread_t private_state_thread = m_private_state_thread; 3317 if (IS_VALID_LLDB_HOST_THREAD(private_state_thread)) 3318 { 3319 TimeValue timeout_time; 3320 bool timed_out; 3321 3322 m_private_state_control_broadcaster.BroadcastEvent (signal, NULL); 3323 3324 timeout_time = TimeValue::Now(); 3325 timeout_time.OffsetWithSeconds(2); 3326 if (log) 3327 log->Printf ("Sending control event of type: %d.", signal); 3328 m_private_state_control_wait.WaitForValueEqualTo (true, &timeout_time, &timed_out); 3329 m_private_state_control_wait.SetValue (false, eBroadcastNever); 3330 3331 if (signal == eBroadcastInternalStateControlStop) 3332 { 3333 if (timed_out) 3334 { 3335 Error error; 3336 Host::ThreadCancel (private_state_thread, &error); 3337 if (log) 3338 log->Printf ("Timed out responding to the control event, cancel got error: \"%s\".", error.AsCString()); 3339 } 3340 else 3341 { 3342 if (log) 3343 log->Printf ("The control event killed the private state thread without having to cancel."); 3344 } 3345 3346 thread_result_t result = NULL; 3347 Host::ThreadJoin (private_state_thread, &result, NULL); 3348 m_private_state_thread = LLDB_INVALID_HOST_THREAD; 3349 } 3350 } 3351 else 3352 { 3353 if (log) 3354 log->Printf ("Private state thread already dead, no need to signal it to stop."); 3355 } 3356 } 3357 3358 void 3359 Process::HandlePrivateEvent (EventSP &event_sp) 3360 { 3361 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3362 m_currently_handling_event.SetValue(true, eBroadcastNever); 3363 3364 const StateType new_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 3365 3366 // First check to see if anybody wants a shot at this event: 3367 if (m_next_event_action_ap.get() != NULL) 3368 { 3369 NextEventAction::EventActionResult action_result = m_next_event_action_ap->PerformAction(event_sp); 3370 switch (action_result) 3371 { 3372 case NextEventAction::eEventActionSuccess: 3373 SetNextEventAction(NULL); 3374 break; 3375 3376 case NextEventAction::eEventActionRetry: 3377 break; 3378 3379 case NextEventAction::eEventActionExit: 3380 // Handle Exiting Here. If we already got an exited event, 3381 // we should just propagate it. Otherwise, swallow this event, 3382 // and set our state to exit so the next event will kill us. 3383 if (new_state != eStateExited) 3384 { 3385 // FIXME: should cons up an exited event, and discard this one. 3386 SetExitStatus(0, m_next_event_action_ap->GetExitString()); 3387 SetNextEventAction(NULL); 3388 return; 3389 } 3390 SetNextEventAction(NULL); 3391 break; 3392 } 3393 } 3394 3395 // See if we should broadcast this state to external clients? 3396 const bool should_broadcast = ShouldBroadcastEvent (event_sp.get()); 3397 3398 if (should_broadcast) 3399 { 3400 if (log) 3401 { 3402 log->Printf ("Process::%s (pid = %llu) broadcasting new state %s (old state %s) to %s", 3403 __FUNCTION__, 3404 GetID(), 3405 StateAsCString(new_state), 3406 StateAsCString (GetState ()), 3407 IsHijackedForEvent(eBroadcastBitStateChanged) ? "hijacked" : "public"); 3408 } 3409 Process::ProcessEventData::SetUpdateStateOnRemoval(event_sp.get()); 3410 if (StateIsRunningState (new_state)) 3411 PushProcessInputReader (); 3412 else 3413 PopProcessInputReader (); 3414 3415 BroadcastEvent (event_sp); 3416 } 3417 else 3418 { 3419 if (log) 3420 { 3421 log->Printf ("Process::%s (pid = %llu) suppressing state %s (old state %s): should_broadcast == false", 3422 __FUNCTION__, 3423 GetID(), 3424 StateAsCString(new_state), 3425 StateAsCString (GetState ())); 3426 } 3427 } 3428 m_currently_handling_event.SetValue(false, eBroadcastAlways); 3429 } 3430 3431 void * 3432 Process::PrivateStateThread (void *arg) 3433 { 3434 Process *proc = static_cast<Process*> (arg); 3435 void *result = proc->RunPrivateStateThread (); 3436 return result; 3437 } 3438 3439 void * 3440 Process::RunPrivateStateThread () 3441 { 3442 bool control_only = true; 3443 m_private_state_control_wait.SetValue (false, eBroadcastNever); 3444 3445 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3446 if (log) 3447 log->Printf ("Process::%s (arg = %p, pid = %llu) thread starting...", __FUNCTION__, this, GetID()); 3448 3449 bool exit_now = false; 3450 while (!exit_now) 3451 { 3452 EventSP event_sp; 3453 WaitForEventsPrivate (NULL, event_sp, control_only); 3454 if (event_sp->BroadcasterIs(&m_private_state_control_broadcaster)) 3455 { 3456 if (log) 3457 log->Printf ("Process::%s (arg = %p, pid = %llu) got a control event: %d", __FUNCTION__, this, GetID(), event_sp->GetType()); 3458 3459 switch (event_sp->GetType()) 3460 { 3461 case eBroadcastInternalStateControlStop: 3462 exit_now = true; 3463 break; // doing any internal state managment below 3464 3465 case eBroadcastInternalStateControlPause: 3466 control_only = true; 3467 break; 3468 3469 case eBroadcastInternalStateControlResume: 3470 control_only = false; 3471 break; 3472 } 3473 3474 m_private_state_control_wait.SetValue (true, eBroadcastAlways); 3475 continue; 3476 } 3477 3478 3479 const StateType internal_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 3480 3481 if (internal_state != eStateInvalid) 3482 { 3483 HandlePrivateEvent (event_sp); 3484 } 3485 3486 if (internal_state == eStateInvalid || 3487 internal_state == eStateExited || 3488 internal_state == eStateDetached ) 3489 { 3490 if (log) 3491 log->Printf ("Process::%s (arg = %p, pid = %llu) about to exit with internal state %s...", __FUNCTION__, this, GetID(), StateAsCString(internal_state)); 3492 3493 break; 3494 } 3495 } 3496 3497 // Verify log is still enabled before attempting to write to it... 3498 if (log) 3499 log->Printf ("Process::%s (arg = %p, pid = %llu) thread exiting...", __FUNCTION__, this, GetID()); 3500 3501 m_private_state_control_wait.SetValue (true, eBroadcastAlways); 3502 m_private_state_thread = LLDB_INVALID_HOST_THREAD; 3503 return NULL; 3504 } 3505 3506 //------------------------------------------------------------------ 3507 // Process Event Data 3508 //------------------------------------------------------------------ 3509 3510 Process::ProcessEventData::ProcessEventData () : 3511 EventData (), 3512 m_process_sp (), 3513 m_state (eStateInvalid), 3514 m_restarted (false), 3515 m_update_state (0), 3516 m_interrupted (false) 3517 { 3518 } 3519 3520 Process::ProcessEventData::ProcessEventData (const ProcessSP &process_sp, StateType state) : 3521 EventData (), 3522 m_process_sp (process_sp), 3523 m_state (state), 3524 m_restarted (false), 3525 m_update_state (0), 3526 m_interrupted (false) 3527 { 3528 } 3529 3530 Process::ProcessEventData::~ProcessEventData() 3531 { 3532 } 3533 3534 const ConstString & 3535 Process::ProcessEventData::GetFlavorString () 3536 { 3537 static ConstString g_flavor ("Process::ProcessEventData"); 3538 return g_flavor; 3539 } 3540 3541 const ConstString & 3542 Process::ProcessEventData::GetFlavor () const 3543 { 3544 return ProcessEventData::GetFlavorString (); 3545 } 3546 3547 void 3548 Process::ProcessEventData::DoOnRemoval (Event *event_ptr) 3549 { 3550 // This function gets called twice for each event, once when the event gets pulled 3551 // off of the private process event queue, and then any number of times, first when it gets pulled off of 3552 // the public event queue, then other times when we're pretending that this is where we stopped at the 3553 // end of expression evaluation. m_update_state is used to distinguish these 3554 // three cases; it is 0 when we're just pulling it off for private handling, 3555 // and > 1 for expression evaluation, and we don't want to do the breakpoint command handling then. 3556 3557 if (m_update_state != 1) 3558 return; 3559 3560 m_process_sp->SetPublicState (m_state); 3561 3562 // If we're stopped and haven't restarted, then do the breakpoint commands here: 3563 if (m_state == eStateStopped && ! m_restarted) 3564 { 3565 ThreadList &curr_thread_list = m_process_sp->GetThreadList(); 3566 uint32_t num_threads = curr_thread_list.GetSize(); 3567 uint32_t idx; 3568 3569 // The actions might change one of the thread's stop_info's opinions about whether we should 3570 // stop the process, so we need to query that as we go. 3571 3572 // One other complication here, is that we try to catch any case where the target has run (except for expressions) 3573 // and immediately exit, but if we get that wrong (which is possible) then the thread list might have changed, and 3574 // that would cause our iteration here to crash. We could make a copy of the thread list, but we'd really like 3575 // 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 3576 // against this list & bag out if anything differs. 3577 std::vector<uint32_t> thread_index_array(num_threads); 3578 for (idx = 0; idx < num_threads; ++idx) 3579 thread_index_array[idx] = curr_thread_list.GetThreadAtIndex(idx)->GetIndexID(); 3580 3581 bool still_should_stop = true; 3582 3583 for (idx = 0; idx < num_threads; ++idx) 3584 { 3585 curr_thread_list = m_process_sp->GetThreadList(); 3586 if (curr_thread_list.GetSize() != num_threads) 3587 { 3588 lldb::LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); 3589 if (log) 3590 log->Printf("Number of threads changed from %u to %u while processing event.", num_threads, curr_thread_list.GetSize()); 3591 break; 3592 } 3593 3594 lldb::ThreadSP thread_sp = curr_thread_list.GetThreadAtIndex(idx); 3595 3596 if (thread_sp->GetIndexID() != thread_index_array[idx]) 3597 { 3598 lldb::LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); 3599 if (log) 3600 log->Printf("The thread at position %u changed from %u to %u while processing event.", 3601 idx, 3602 thread_index_array[idx], 3603 thread_sp->GetIndexID()); 3604 break; 3605 } 3606 3607 StopInfoSP stop_info_sp = thread_sp->GetStopInfo (); 3608 if (stop_info_sp) 3609 { 3610 stop_info_sp->PerformAction(event_ptr); 3611 // The stop action might restart the target. If it does, then we want to mark that in the 3612 // event so that whoever is receiving it will know to wait for the running event and reflect 3613 // that state appropriately. 3614 // We also need to stop processing actions, since they aren't expecting the target to be running. 3615 3616 // FIXME: we might have run. 3617 if (stop_info_sp->HasTargetRunSinceMe()) 3618 { 3619 SetRestarted (true); 3620 break; 3621 } 3622 else if (!stop_info_sp->ShouldStop(event_ptr)) 3623 { 3624 still_should_stop = false; 3625 } 3626 } 3627 } 3628 3629 3630 if (m_process_sp->GetPrivateState() != eStateRunning) 3631 { 3632 if (!still_should_stop) 3633 { 3634 // We've been asked to continue, so do that here. 3635 SetRestarted(true); 3636 // Use the public resume method here, since this is just 3637 // extending a public resume. 3638 m_process_sp->Resume(); 3639 } 3640 else 3641 { 3642 // If we didn't restart, run the Stop Hooks here: 3643 // They might also restart the target, so watch for that. 3644 m_process_sp->GetTarget().RunStopHooks(); 3645 if (m_process_sp->GetPrivateState() == eStateRunning) 3646 SetRestarted(true); 3647 } 3648 } 3649 3650 } 3651 } 3652 3653 void 3654 Process::ProcessEventData::Dump (Stream *s) const 3655 { 3656 if (m_process_sp) 3657 s->Printf(" process = %p (pid = %llu), ", m_process_sp.get(), m_process_sp->GetID()); 3658 3659 s->Printf("state = %s", StateAsCString(GetState())); 3660 } 3661 3662 const Process::ProcessEventData * 3663 Process::ProcessEventData::GetEventDataFromEvent (const Event *event_ptr) 3664 { 3665 if (event_ptr) 3666 { 3667 const EventData *event_data = event_ptr->GetData(); 3668 if (event_data && event_data->GetFlavor() == ProcessEventData::GetFlavorString()) 3669 return static_cast <const ProcessEventData *> (event_ptr->GetData()); 3670 } 3671 return NULL; 3672 } 3673 3674 ProcessSP 3675 Process::ProcessEventData::GetProcessFromEvent (const Event *event_ptr) 3676 { 3677 ProcessSP process_sp; 3678 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3679 if (data) 3680 process_sp = data->GetProcessSP(); 3681 return process_sp; 3682 } 3683 3684 StateType 3685 Process::ProcessEventData::GetStateFromEvent (const Event *event_ptr) 3686 { 3687 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3688 if (data == NULL) 3689 return eStateInvalid; 3690 else 3691 return data->GetState(); 3692 } 3693 3694 bool 3695 Process::ProcessEventData::GetRestartedFromEvent (const Event *event_ptr) 3696 { 3697 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3698 if (data == NULL) 3699 return false; 3700 else 3701 return data->GetRestarted(); 3702 } 3703 3704 void 3705 Process::ProcessEventData::SetRestartedInEvent (Event *event_ptr, bool new_value) 3706 { 3707 ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); 3708 if (data != NULL) 3709 data->SetRestarted(new_value); 3710 } 3711 3712 bool 3713 Process::ProcessEventData::GetInterruptedFromEvent (const Event *event_ptr) 3714 { 3715 const ProcessEventData *data = GetEventDataFromEvent (event_ptr); 3716 if (data == NULL) 3717 return false; 3718 else 3719 return data->GetInterrupted (); 3720 } 3721 3722 void 3723 Process::ProcessEventData::SetInterruptedInEvent (Event *event_ptr, bool new_value) 3724 { 3725 ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); 3726 if (data != NULL) 3727 data->SetInterrupted(new_value); 3728 } 3729 3730 bool 3731 Process::ProcessEventData::SetUpdateStateOnRemoval (Event *event_ptr) 3732 { 3733 ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); 3734 if (data) 3735 { 3736 data->SetUpdateStateOnRemoval(); 3737 return true; 3738 } 3739 return false; 3740 } 3741 3742 lldb::TargetSP 3743 Process::CalculateTarget () 3744 { 3745 return m_target.shared_from_this(); 3746 } 3747 3748 void 3749 Process::CalculateExecutionContext (ExecutionContext &exe_ctx) 3750 { 3751 exe_ctx.SetTargetPtr (&m_target); 3752 exe_ctx.SetProcessPtr (this); 3753 exe_ctx.SetThreadPtr(NULL); 3754 exe_ctx.SetFramePtr (NULL); 3755 } 3756 3757 //uint32_t 3758 //Process::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) 3759 //{ 3760 // return 0; 3761 //} 3762 // 3763 //ArchSpec 3764 //Process::GetArchSpecForExistingProcess (lldb::pid_t pid) 3765 //{ 3766 // return Host::GetArchSpecForExistingProcess (pid); 3767 //} 3768 // 3769 //ArchSpec 3770 //Process::GetArchSpecForExistingProcess (const char *process_name) 3771 //{ 3772 // return Host::GetArchSpecForExistingProcess (process_name); 3773 //} 3774 // 3775 void 3776 Process::AppendSTDOUT (const char * s, size_t len) 3777 { 3778 Mutex::Locker locker (m_stdio_communication_mutex); 3779 m_stdout_data.append (s, len); 3780 BroadcastEventIfUnique (eBroadcastBitSTDOUT, new ProcessEventData (GetTarget().GetProcessSP(), GetState())); 3781 } 3782 3783 void 3784 Process::AppendSTDERR (const char * s, size_t len) 3785 { 3786 Mutex::Locker locker (m_stdio_communication_mutex); 3787 m_stderr_data.append (s, len); 3788 BroadcastEventIfUnique (eBroadcastBitSTDERR, new ProcessEventData (GetTarget().GetProcessSP(), GetState())); 3789 } 3790 3791 //------------------------------------------------------------------ 3792 // Process STDIO 3793 //------------------------------------------------------------------ 3794 3795 size_t 3796 Process::GetSTDOUT (char *buf, size_t buf_size, Error &error) 3797 { 3798 Mutex::Locker locker(m_stdio_communication_mutex); 3799 size_t bytes_available = m_stdout_data.size(); 3800 if (bytes_available > 0) 3801 { 3802 LogSP log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3803 if (log) 3804 log->Printf ("Process::GetSTDOUT (buf = %p, size = %zu)", buf, buf_size); 3805 if (bytes_available > buf_size) 3806 { 3807 memcpy(buf, m_stdout_data.c_str(), buf_size); 3808 m_stdout_data.erase(0, buf_size); 3809 bytes_available = buf_size; 3810 } 3811 else 3812 { 3813 memcpy(buf, m_stdout_data.c_str(), bytes_available); 3814 m_stdout_data.clear(); 3815 } 3816 } 3817 return bytes_available; 3818 } 3819 3820 3821 size_t 3822 Process::GetSTDERR (char *buf, size_t buf_size, Error &error) 3823 { 3824 Mutex::Locker locker(m_stdio_communication_mutex); 3825 size_t bytes_available = m_stderr_data.size(); 3826 if (bytes_available > 0) 3827 { 3828 LogSP log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); 3829 if (log) 3830 log->Printf ("Process::GetSTDERR (buf = %p, size = %zu)", buf, buf_size); 3831 if (bytes_available > buf_size) 3832 { 3833 memcpy(buf, m_stderr_data.c_str(), buf_size); 3834 m_stderr_data.erase(0, buf_size); 3835 bytes_available = buf_size; 3836 } 3837 else 3838 { 3839 memcpy(buf, m_stderr_data.c_str(), bytes_available); 3840 m_stderr_data.clear(); 3841 } 3842 } 3843 return bytes_available; 3844 } 3845 3846 void 3847 Process::STDIOReadThreadBytesReceived (void *baton, const void *src, size_t src_len) 3848 { 3849 Process *process = (Process *) baton; 3850 process->AppendSTDOUT (static_cast<const char *>(src), src_len); 3851 } 3852 3853 size_t 3854 Process::ProcessInputReaderCallback (void *baton, 3855 InputReader &reader, 3856 lldb::InputReaderAction notification, 3857 const char *bytes, 3858 size_t bytes_len) 3859 { 3860 Process *process = (Process *) baton; 3861 3862 switch (notification) 3863 { 3864 case eInputReaderActivate: 3865 break; 3866 3867 case eInputReaderDeactivate: 3868 break; 3869 3870 case eInputReaderReactivate: 3871 break; 3872 3873 case eInputReaderAsynchronousOutputWritten: 3874 break; 3875 3876 case eInputReaderGotToken: 3877 { 3878 Error error; 3879 process->PutSTDIN (bytes, bytes_len, error); 3880 } 3881 break; 3882 3883 case eInputReaderInterrupt: 3884 process->Halt (); 3885 break; 3886 3887 case eInputReaderEndOfFile: 3888 process->AppendSTDOUT ("^D", 2); 3889 break; 3890 3891 case eInputReaderDone: 3892 break; 3893 3894 } 3895 3896 return bytes_len; 3897 } 3898 3899 void 3900 Process::ResetProcessInputReader () 3901 { 3902 m_process_input_reader.reset(); 3903 } 3904 3905 void 3906 Process::SetSTDIOFileDescriptor (int file_descriptor) 3907 { 3908 // First set up the Read Thread for reading/handling process I/O 3909 3910 std::auto_ptr<ConnectionFileDescriptor> conn_ap (new ConnectionFileDescriptor (file_descriptor, true)); 3911 3912 if (conn_ap.get()) 3913 { 3914 m_stdio_communication.SetConnection (conn_ap.release()); 3915 if (m_stdio_communication.IsConnected()) 3916 { 3917 m_stdio_communication.SetReadThreadBytesReceivedCallback (STDIOReadThreadBytesReceived, this); 3918 m_stdio_communication.StartReadThread(); 3919 3920 // Now read thread is set up, set up input reader. 3921 3922 if (!m_process_input_reader.get()) 3923 { 3924 m_process_input_reader.reset (new InputReader(m_target.GetDebugger())); 3925 Error err (m_process_input_reader->Initialize (Process::ProcessInputReaderCallback, 3926 this, 3927 eInputReaderGranularityByte, 3928 NULL, 3929 NULL, 3930 false)); 3931 3932 if (err.Fail()) 3933 m_process_input_reader.reset(); 3934 } 3935 } 3936 } 3937 } 3938 3939 void 3940 Process::PushProcessInputReader () 3941 { 3942 if (m_process_input_reader && !m_process_input_reader->IsActive()) 3943 m_target.GetDebugger().PushInputReader (m_process_input_reader); 3944 } 3945 3946 void 3947 Process::PopProcessInputReader () 3948 { 3949 if (m_process_input_reader && m_process_input_reader->IsActive()) 3950 m_target.GetDebugger().PopInputReader (m_process_input_reader); 3951 } 3952 3953 // The process needs to know about installed plug-ins 3954 void 3955 Process::SettingsInitialize () 3956 { 3957 static std::vector<OptionEnumValueElement> g_plugins; 3958 3959 int i=0; 3960 const char *name; 3961 OptionEnumValueElement option_enum; 3962 while ((name = PluginManager::GetProcessPluginNameAtIndex (i)) != NULL) 3963 { 3964 if (name) 3965 { 3966 option_enum.value = i; 3967 option_enum.string_value = name; 3968 option_enum.usage = PluginManager::GetProcessPluginDescriptionAtIndex (i); 3969 g_plugins.push_back (option_enum); 3970 } 3971 ++i; 3972 } 3973 option_enum.value = 0; 3974 option_enum.string_value = NULL; 3975 option_enum.usage = NULL; 3976 g_plugins.push_back (option_enum); 3977 3978 for (i=0; (name = SettingsController::instance_settings_table[i].var_name); ++i) 3979 { 3980 if (::strcmp (name, "plugin") == 0) 3981 { 3982 SettingsController::instance_settings_table[i].enum_values = &g_plugins[0]; 3983 break; 3984 } 3985 } 3986 UserSettingsControllerSP &usc = GetSettingsController(); 3987 UserSettingsController::InitializeSettingsController (usc, 3988 SettingsController::global_settings_table, 3989 SettingsController::instance_settings_table); 3990 3991 // Now call SettingsInitialize() for each 'child' of Process settings 3992 Thread::SettingsInitialize (); 3993 } 3994 3995 void 3996 Process::SettingsTerminate () 3997 { 3998 // Must call SettingsTerminate() on each 'child' of Process settings before terminating Process settings. 3999 4000 Thread::SettingsTerminate (); 4001 4002 // Now terminate Process Settings. 4003 4004 UserSettingsControllerSP &usc = GetSettingsController(); 4005 UserSettingsController::FinalizeSettingsController (usc); 4006 usc.reset(); 4007 } 4008 4009 UserSettingsControllerSP & 4010 Process::GetSettingsController () 4011 { 4012 static UserSettingsControllerSP g_settings_controller_sp; 4013 if (!g_settings_controller_sp) 4014 { 4015 g_settings_controller_sp.reset (new Process::SettingsController); 4016 // The first shared pointer to Process::SettingsController in 4017 // g_settings_controller_sp must be fully created above so that 4018 // the TargetInstanceSettings can use a weak_ptr to refer back 4019 // to the master setttings controller 4020 InstanceSettingsSP default_instance_settings_sp (new ProcessInstanceSettings (g_settings_controller_sp, 4021 false, 4022 InstanceSettings::GetDefaultName().AsCString())); 4023 g_settings_controller_sp->SetDefaultInstanceSettings (default_instance_settings_sp); 4024 } 4025 return g_settings_controller_sp; 4026 4027 } 4028 4029 void 4030 Process::UpdateInstanceName () 4031 { 4032 Module *module = GetTarget().GetExecutableModulePointer(); 4033 if (module && module->GetFileSpec().GetFilename()) 4034 { 4035 GetSettingsController()->RenameInstanceSettings (GetInstanceName().AsCString(), 4036 module->GetFileSpec().GetFilename().AsCString()); 4037 } 4038 } 4039 4040 ExecutionResults 4041 Process::RunThreadPlan (ExecutionContext &exe_ctx, 4042 lldb::ThreadPlanSP &thread_plan_sp, 4043 bool stop_others, 4044 bool try_all_threads, 4045 bool discard_on_error, 4046 uint32_t single_thread_timeout_usec, 4047 Stream &errors) 4048 { 4049 ExecutionResults return_value = eExecutionSetupError; 4050 4051 if (thread_plan_sp.get() == NULL) 4052 { 4053 errors.Printf("RunThreadPlan called with empty thread plan."); 4054 return eExecutionSetupError; 4055 } 4056 4057 if (exe_ctx.GetProcessPtr() != this) 4058 { 4059 errors.Printf("RunThreadPlan called on wrong process."); 4060 return eExecutionSetupError; 4061 } 4062 4063 Thread *thread = exe_ctx.GetThreadPtr(); 4064 if (thread == NULL) 4065 { 4066 errors.Printf("RunThreadPlan called with invalid thread."); 4067 return eExecutionSetupError; 4068 } 4069 4070 // We rely on the thread plan we are running returning "PlanCompleted" if when it successfully completes. 4071 // For that to be true the plan can't be private - since private plans suppress themselves in the 4072 // GetCompletedPlan call. 4073 4074 bool orig_plan_private = thread_plan_sp->GetPrivate(); 4075 thread_plan_sp->SetPrivate(false); 4076 4077 if (m_private_state.GetValue() != eStateStopped) 4078 { 4079 errors.Printf ("RunThreadPlan called while the private state was not stopped."); 4080 return eExecutionSetupError; 4081 } 4082 4083 // Save the thread & frame from the exe_ctx for restoration after we run 4084 const uint32_t thread_idx_id = thread->GetIndexID(); 4085 StackID ctx_frame_id = thread->GetSelectedFrame()->GetStackID(); 4086 4087 // N.B. Running the target may unset the currently selected thread and frame. We don't want to do that either, 4088 // so we should arrange to reset them as well. 4089 4090 lldb::ThreadSP selected_thread_sp = GetThreadList().GetSelectedThread(); 4091 4092 uint32_t selected_tid; 4093 StackID selected_stack_id; 4094 if (selected_thread_sp) 4095 { 4096 selected_tid = selected_thread_sp->GetIndexID(); 4097 selected_stack_id = selected_thread_sp->GetSelectedFrame()->GetStackID(); 4098 } 4099 else 4100 { 4101 selected_tid = LLDB_INVALID_THREAD_ID; 4102 } 4103 4104 lldb::thread_t backup_private_state_thread = LLDB_INVALID_HOST_THREAD; 4105 lldb::StateType old_state; 4106 lldb::ThreadPlanSP stopper_base_plan_sp; 4107 4108 lldb::LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); 4109 if (Host::GetCurrentThread() == m_private_state_thread) 4110 { 4111 // Yikes, we are running on the private state thread! So we can't wait for public events on this thread, since 4112 // we are the thread that is generating public events. 4113 // The simplest thing to do is to spin up a temporary thread to handle private state thread events while 4114 // we are fielding public events here. 4115 if (log) 4116 log->Printf ("Running thread plan on private state thread, spinning up another state thread to handle the events."); 4117 4118 4119 backup_private_state_thread = m_private_state_thread; 4120 4121 // One other bit of business: we want to run just this thread plan and anything it pushes, and then stop, 4122 // returning control here. 4123 // But in the normal course of things, the plan above us on the stack would be given a shot at the stop 4124 // event before deciding to stop, and we don't want that. So we insert a "stopper" base plan on the stack 4125 // before the plan we want to run. Since base plans always stop and return control to the user, that will 4126 // do just what we want. 4127 stopper_base_plan_sp.reset(new ThreadPlanBase (*thread)); 4128 thread->QueueThreadPlan (stopper_base_plan_sp, false); 4129 // Have to make sure our public state is stopped, since otherwise the reporting logic below doesn't work correctly. 4130 old_state = m_public_state.GetValue(); 4131 m_public_state.SetValueNoLock(eStateStopped); 4132 4133 // Now spin up the private state thread: 4134 StartPrivateStateThread(true); 4135 } 4136 4137 thread->QueueThreadPlan(thread_plan_sp, false); // This used to pass "true" does that make sense? 4138 4139 Listener listener("lldb.process.listener.run-thread-plan"); 4140 4141 // This process event hijacker Hijacks the Public events and its destructor makes sure that the process events get 4142 // restored on exit to the function. 4143 4144 ProcessEventHijacker run_thread_plan_hijacker (*this, &listener); 4145 4146 if (log) 4147 { 4148 StreamString s; 4149 thread_plan_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); 4150 log->Printf ("Process::RunThreadPlan(): Resuming thread %u - 0x%4.4llx to run thread plan \"%s\".", 4151 thread->GetIndexID(), 4152 thread->GetID(), 4153 s.GetData()); 4154 } 4155 4156 bool got_event; 4157 lldb::EventSP event_sp; 4158 lldb::StateType stop_state = lldb::eStateInvalid; 4159 4160 TimeValue* timeout_ptr = NULL; 4161 TimeValue real_timeout; 4162 4163 bool first_timeout = true; 4164 bool do_resume = true; 4165 4166 while (1) 4167 { 4168 // We usually want to resume the process if we get to the top of the loop. 4169 // The only exception is if we get two running events with no intervening 4170 // stop, which can happen, we will just wait for then next stop event. 4171 4172 if (do_resume) 4173 { 4174 // Do the initial resume and wait for the running event before going further. 4175 4176 Error resume_error = PrivateResume (); 4177 if (!resume_error.Success()) 4178 { 4179 errors.Printf("Error resuming inferior: \"%s\".\n", resume_error.AsCString()); 4180 return_value = eExecutionSetupError; 4181 break; 4182 } 4183 4184 real_timeout = TimeValue::Now(); 4185 real_timeout.OffsetWithMicroSeconds(500000); 4186 timeout_ptr = &real_timeout; 4187 4188 got_event = listener.WaitForEvent(timeout_ptr, event_sp); 4189 if (!got_event) 4190 { 4191 if (log) 4192 log->PutCString("Process::RunThreadPlan(): didn't get any event after initial resume, exiting."); 4193 4194 errors.Printf("Didn't get any event after initial resume, exiting."); 4195 return_value = eExecutionSetupError; 4196 break; 4197 } 4198 4199 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 4200 if (stop_state != eStateRunning) 4201 { 4202 if (log) 4203 log->Printf("Process::RunThreadPlan(): didn't get running event after initial resume, got %s instead.", StateAsCString(stop_state)); 4204 4205 errors.Printf("Didn't get running event after initial resume, got %s instead.", StateAsCString(stop_state)); 4206 return_value = eExecutionSetupError; 4207 break; 4208 } 4209 4210 if (log) 4211 log->PutCString ("Process::RunThreadPlan(): resuming succeeded."); 4212 // We need to call the function synchronously, so spin waiting for it to return. 4213 // If we get interrupted while executing, we're going to lose our context, and 4214 // won't be able to gather the result at this point. 4215 // We set the timeout AFTER the resume, since the resume takes some time and we 4216 // don't want to charge that to the timeout. 4217 4218 if (single_thread_timeout_usec != 0) 4219 { 4220 real_timeout = TimeValue::Now(); 4221 real_timeout.OffsetWithMicroSeconds(single_thread_timeout_usec); 4222 4223 timeout_ptr = &real_timeout; 4224 } 4225 } 4226 else 4227 { 4228 if (log) 4229 log->PutCString ("Process::RunThreadPlan(): handled an extra running event."); 4230 do_resume = true; 4231 } 4232 4233 // Now wait for the process to stop again: 4234 stop_state = lldb::eStateInvalid; 4235 event_sp.reset(); 4236 4237 if (log) 4238 { 4239 if (timeout_ptr) 4240 { 4241 StreamString s; 4242 s.Printf ("about to wait - timeout is:\n "); 4243 timeout_ptr->Dump (&s, 120); 4244 s.Printf ("\nNow is:\n "); 4245 TimeValue::Now().Dump (&s, 120); 4246 log->Printf ("Process::RunThreadPlan(): %s", s.GetData()); 4247 } 4248 else 4249 { 4250 log->Printf ("Process::RunThreadPlan(): about to wait forever."); 4251 } 4252 } 4253 4254 got_event = listener.WaitForEvent (timeout_ptr, event_sp); 4255 4256 if (got_event) 4257 { 4258 if (event_sp.get()) 4259 { 4260 bool keep_going = false; 4261 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 4262 if (log) 4263 log->Printf("Process::RunThreadPlan(): in while loop, got event: %s.", StateAsCString(stop_state)); 4264 4265 switch (stop_state) 4266 { 4267 case lldb::eStateStopped: 4268 { 4269 // Yay, we're done. Now make sure that our thread plan actually completed. 4270 ThreadSP thread_sp = GetThreadList().FindThreadByIndexID (thread_idx_id); 4271 if (!thread_sp) 4272 { 4273 // Ooh, our thread has vanished. Unlikely that this was successful execution... 4274 if (log) 4275 log->Printf ("Process::RunThreadPlan(): execution completed but our thread (index-id=%u) has vanished.", thread_idx_id); 4276 return_value = eExecutionInterrupted; 4277 } 4278 else 4279 { 4280 StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); 4281 StopReason stop_reason = eStopReasonInvalid; 4282 if (stop_info_sp) 4283 stop_reason = stop_info_sp->GetStopReason(); 4284 if (stop_reason == eStopReasonPlanComplete) 4285 { 4286 if (log) 4287 log->PutCString ("Process::RunThreadPlan(): execution completed successfully."); 4288 // Now mark this plan as private so it doesn't get reported as the stop reason 4289 // after this point. 4290 if (thread_plan_sp) 4291 thread_plan_sp->SetPrivate (orig_plan_private); 4292 return_value = eExecutionCompleted; 4293 } 4294 else 4295 { 4296 if (log) 4297 log->PutCString ("Process::RunThreadPlan(): thread plan didn't successfully complete."); 4298 4299 return_value = eExecutionInterrupted; 4300 } 4301 } 4302 } 4303 break; 4304 4305 case lldb::eStateCrashed: 4306 if (log) 4307 log->PutCString ("Process::RunThreadPlan(): execution crashed."); 4308 return_value = eExecutionInterrupted; 4309 break; 4310 4311 case lldb::eStateRunning: 4312 do_resume = false; 4313 keep_going = true; 4314 break; 4315 4316 default: 4317 if (log) 4318 log->Printf("Process::RunThreadPlan(): execution stopped with unexpected state: %s.", StateAsCString(stop_state)); 4319 4320 errors.Printf ("Execution stopped with unexpected state."); 4321 return_value = eExecutionInterrupted; 4322 break; 4323 } 4324 if (keep_going) 4325 continue; 4326 else 4327 break; 4328 } 4329 else 4330 { 4331 if (log) 4332 log->PutCString ("Process::RunThreadPlan(): got_event was true, but the event pointer was null. How odd..."); 4333 return_value = eExecutionInterrupted; 4334 break; 4335 } 4336 } 4337 else 4338 { 4339 // If we didn't get an event that means we've timed out... 4340 // We will interrupt the process here. Depending on what we were asked to do we will 4341 // either exit, or try with all threads running for the same timeout. 4342 // Not really sure what to do if Halt fails here... 4343 4344 if (log) { 4345 if (try_all_threads) 4346 { 4347 if (first_timeout) 4348 log->Printf ("Process::RunThreadPlan(): Running function with timeout: %d timed out, " 4349 "trying with all threads enabled.", 4350 single_thread_timeout_usec); 4351 else 4352 log->Printf ("Process::RunThreadPlan(): Restarting function with all threads enabled " 4353 "and timeout: %d timed out.", 4354 single_thread_timeout_usec); 4355 } 4356 else 4357 log->Printf ("Process::RunThreadPlan(): Running function with timeout: %d timed out, " 4358 "halt and abandoning execution.", 4359 single_thread_timeout_usec); 4360 } 4361 4362 Error halt_error = Halt(); 4363 if (halt_error.Success()) 4364 { 4365 if (log) 4366 log->PutCString ("Process::RunThreadPlan(): Halt succeeded."); 4367 4368 // If halt succeeds, it always produces a stopped event. Wait for that: 4369 4370 real_timeout = TimeValue::Now(); 4371 real_timeout.OffsetWithMicroSeconds(500000); 4372 4373 got_event = listener.WaitForEvent(&real_timeout, event_sp); 4374 4375 if (got_event) 4376 { 4377 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 4378 if (log) 4379 { 4380 log->Printf ("Process::RunThreadPlan(): Stopped with event: %s", StateAsCString(stop_state)); 4381 if (stop_state == lldb::eStateStopped 4382 && Process::ProcessEventData::GetInterruptedFromEvent(event_sp.get())) 4383 log->PutCString (" Event was the Halt interruption event."); 4384 } 4385 4386 if (stop_state == lldb::eStateStopped) 4387 { 4388 // Between the time we initiated the Halt and the time we delivered it, the process could have 4389 // already finished its job. Check that here: 4390 4391 if (thread->IsThreadPlanDone (thread_plan_sp.get())) 4392 { 4393 if (log) 4394 log->PutCString ("Process::RunThreadPlan(): Even though we timed out, the call plan was done. " 4395 "Exiting wait loop."); 4396 return_value = eExecutionCompleted; 4397 break; 4398 } 4399 4400 if (!try_all_threads) 4401 { 4402 if (log) 4403 log->PutCString ("Process::RunThreadPlan(): try_all_threads was false, we stopped so now we're quitting."); 4404 return_value = eExecutionInterrupted; 4405 break; 4406 } 4407 4408 if (first_timeout) 4409 { 4410 // Set all the other threads to run, and return to the top of the loop, which will continue; 4411 first_timeout = false; 4412 thread_plan_sp->SetStopOthers (false); 4413 if (log) 4414 log->PutCString ("Process::RunThreadPlan(): about to resume."); 4415 4416 continue; 4417 } 4418 else 4419 { 4420 // Running all threads failed, so return Interrupted. 4421 if (log) 4422 log->PutCString("Process::RunThreadPlan(): running all threads timed out."); 4423 return_value = eExecutionInterrupted; 4424 break; 4425 } 4426 } 4427 } 4428 else 4429 { if (log) 4430 log->PutCString("Process::RunThreadPlan(): halt said it succeeded, but I got no event. " 4431 "I'm getting out of here passing Interrupted."); 4432 return_value = eExecutionInterrupted; 4433 break; 4434 } 4435 } 4436 else 4437 { 4438 // This branch is to work around some problems with gdb-remote's Halt. It is a little racy, and can return 4439 // an error from halt, but if you wait a bit you'll get a stopped event anyway. 4440 if (log) 4441 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.", 4442 halt_error.AsCString()); 4443 real_timeout = TimeValue::Now(); 4444 real_timeout.OffsetWithMicroSeconds(500000); 4445 timeout_ptr = &real_timeout; 4446 got_event = listener.WaitForEvent(&real_timeout, event_sp); 4447 if (!got_event || event_sp.get() == NULL) 4448 { 4449 // This is not going anywhere, bag out. 4450 if (log) 4451 log->PutCString ("Process::RunThreadPlan(): halt failed: and waiting for the stopped event failed."); 4452 return_value = eExecutionInterrupted; 4453 break; 4454 } 4455 else 4456 { 4457 stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); 4458 if (log) 4459 log->PutCString ("Process::RunThreadPlan(): halt failed: but then I got a stopped event. Whatever..."); 4460 if (stop_state == lldb::eStateStopped) 4461 { 4462 // Between the time we initiated the Halt and the time we delivered it, the process could have 4463 // already finished its job. Check that here: 4464 4465 if (thread->IsThreadPlanDone (thread_plan_sp.get())) 4466 { 4467 if (log) 4468 log->PutCString ("Process::RunThreadPlan(): Even though we timed out, the call plan was done. " 4469 "Exiting wait loop."); 4470 return_value = eExecutionCompleted; 4471 break; 4472 } 4473 4474 if (first_timeout) 4475 { 4476 // Set all the other threads to run, and return to the top of the loop, which will continue; 4477 first_timeout = false; 4478 thread_plan_sp->SetStopOthers (false); 4479 if (log) 4480 log->PutCString ("Process::RunThreadPlan(): About to resume."); 4481 4482 continue; 4483 } 4484 else 4485 { 4486 // Running all threads failed, so return Interrupted. 4487 if (log) 4488 log->PutCString ("Process::RunThreadPlan(): running all threads timed out."); 4489 return_value = eExecutionInterrupted; 4490 break; 4491 } 4492 } 4493 else 4494 { 4495 if (log) 4496 log->Printf ("Process::RunThreadPlan(): halt failed, I waited and didn't get" 4497 " a stopped event, instead got %s.", StateAsCString(stop_state)); 4498 return_value = eExecutionInterrupted; 4499 break; 4500 } 4501 } 4502 } 4503 4504 } 4505 4506 } // END WAIT LOOP 4507 4508 // If we had to start up a temporary private state thread to run this thread plan, shut it down now. 4509 if (IS_VALID_LLDB_HOST_THREAD(backup_private_state_thread)) 4510 { 4511 StopPrivateStateThread(); 4512 Error error; 4513 m_private_state_thread = backup_private_state_thread; 4514 if (stopper_base_plan_sp != NULL) 4515 { 4516 thread->DiscardThreadPlansUpToPlan(stopper_base_plan_sp); 4517 } 4518 m_public_state.SetValueNoLock(old_state); 4519 4520 } 4521 4522 4523 // Now do some processing on the results of the run: 4524 if (return_value == eExecutionInterrupted) 4525 { 4526 if (log) 4527 { 4528 StreamString s; 4529 if (event_sp) 4530 event_sp->Dump (&s); 4531 else 4532 { 4533 log->PutCString ("Process::RunThreadPlan(): Stop event that interrupted us is NULL."); 4534 } 4535 4536 StreamString ts; 4537 4538 const char *event_explanation = NULL; 4539 4540 do 4541 { 4542 const Process::ProcessEventData *event_data = Process::ProcessEventData::GetEventDataFromEvent (event_sp.get()); 4543 4544 if (!event_data) 4545 { 4546 event_explanation = "<no event data>"; 4547 break; 4548 } 4549 4550 Process *process = event_data->GetProcessSP().get(); 4551 4552 if (!process) 4553 { 4554 event_explanation = "<no process>"; 4555 break; 4556 } 4557 4558 ThreadList &thread_list = process->GetThreadList(); 4559 4560 uint32_t num_threads = thread_list.GetSize(); 4561 uint32_t thread_index; 4562 4563 ts.Printf("<%u threads> ", num_threads); 4564 4565 for (thread_index = 0; 4566 thread_index < num_threads; 4567 ++thread_index) 4568 { 4569 Thread *thread = thread_list.GetThreadAtIndex(thread_index).get(); 4570 4571 if (!thread) 4572 { 4573 ts.Printf("<?> "); 4574 continue; 4575 } 4576 4577 ts.Printf("<0x%4.4llx ", thread->GetID()); 4578 RegisterContext *register_context = thread->GetRegisterContext().get(); 4579 4580 if (register_context) 4581 ts.Printf("[ip 0x%llx] ", register_context->GetPC()); 4582 else 4583 ts.Printf("[ip unknown] "); 4584 4585 lldb::StopInfoSP stop_info_sp = thread->GetStopInfo(); 4586 if (stop_info_sp) 4587 { 4588 const char *stop_desc = stop_info_sp->GetDescription(); 4589 if (stop_desc) 4590 ts.PutCString (stop_desc); 4591 } 4592 ts.Printf(">"); 4593 } 4594 4595 event_explanation = ts.GetData(); 4596 } while (0); 4597 4598 if (log) 4599 { 4600 if (event_explanation) 4601 log->Printf("Process::RunThreadPlan(): execution interrupted: %s %s", s.GetData(), event_explanation); 4602 else 4603 log->Printf("Process::RunThreadPlan(): execution interrupted: %s", s.GetData()); 4604 } 4605 4606 if (discard_on_error && thread_plan_sp) 4607 { 4608 if (log) 4609 log->Printf ("Process::RunThreadPlan: ExecutionInterrupted - discarding thread plans up to %p.", thread_plan_sp.get()); 4610 thread->DiscardThreadPlansUpToPlan (thread_plan_sp); 4611 thread_plan_sp->SetPrivate (orig_plan_private); 4612 } 4613 else 4614 { 4615 if (log) 4616 log->Printf ("Process::RunThreadPlan: ExecutionInterrupted - for plan: %p not discarding.", thread_plan_sp.get()); 4617 4618 } 4619 } 4620 } 4621 else if (return_value == eExecutionSetupError) 4622 { 4623 if (log) 4624 log->PutCString("Process::RunThreadPlan(): execution set up error."); 4625 4626 if (discard_on_error && thread_plan_sp) 4627 { 4628 thread->DiscardThreadPlansUpToPlan (thread_plan_sp); 4629 thread_plan_sp->SetPrivate (orig_plan_private); 4630 } 4631 } 4632 else 4633 { 4634 if (thread->IsThreadPlanDone (thread_plan_sp.get())) 4635 { 4636 if (log) 4637 log->PutCString("Process::RunThreadPlan(): thread plan is done"); 4638 return_value = eExecutionCompleted; 4639 } 4640 else if (thread->WasThreadPlanDiscarded (thread_plan_sp.get())) 4641 { 4642 if (log) 4643 log->PutCString("Process::RunThreadPlan(): thread plan was discarded"); 4644 return_value = eExecutionDiscarded; 4645 } 4646 else 4647 { 4648 if (log) 4649 log->PutCString("Process::RunThreadPlan(): thread plan stopped in mid course"); 4650 if (discard_on_error && thread_plan_sp) 4651 { 4652 if (log) 4653 log->PutCString("Process::RunThreadPlan(): discarding thread plan 'cause discard_on_error is set."); 4654 thread->DiscardThreadPlansUpToPlan (thread_plan_sp); 4655 thread_plan_sp->SetPrivate (orig_plan_private); 4656 } 4657 } 4658 } 4659 4660 // Thread we ran the function in may have gone away because we ran the target 4661 // Check that it's still there, and if it is put it back in the context. Also restore the 4662 // frame in the context if it is still present. 4663 thread = GetThreadList().FindThreadByIndexID(thread_idx_id, true).get(); 4664 if (thread) 4665 { 4666 exe_ctx.SetFrameSP (thread->GetFrameWithStackID (ctx_frame_id)); 4667 } 4668 4669 // Also restore the current process'es selected frame & thread, since this function calling may 4670 // be done behind the user's back. 4671 4672 if (selected_tid != LLDB_INVALID_THREAD_ID) 4673 { 4674 if (GetThreadList().SetSelectedThreadByIndexID (selected_tid) && selected_stack_id.IsValid()) 4675 { 4676 // We were able to restore the selected thread, now restore the frame: 4677 StackFrameSP old_frame_sp = GetThreadList().GetSelectedThread()->GetFrameWithStackID(selected_stack_id); 4678 if (old_frame_sp) 4679 GetThreadList().GetSelectedThread()->SetSelectedFrame(old_frame_sp.get()); 4680 } 4681 } 4682 4683 return return_value; 4684 } 4685 4686 const char * 4687 Process::ExecutionResultAsCString (ExecutionResults result) 4688 { 4689 const char *result_name; 4690 4691 switch (result) 4692 { 4693 case eExecutionCompleted: 4694 result_name = "eExecutionCompleted"; 4695 break; 4696 case eExecutionDiscarded: 4697 result_name = "eExecutionDiscarded"; 4698 break; 4699 case eExecutionInterrupted: 4700 result_name = "eExecutionInterrupted"; 4701 break; 4702 case eExecutionSetupError: 4703 result_name = "eExecutionSetupError"; 4704 break; 4705 case eExecutionTimedOut: 4706 result_name = "eExecutionTimedOut"; 4707 break; 4708 } 4709 return result_name; 4710 } 4711 4712 void 4713 Process::GetStatus (Stream &strm) 4714 { 4715 const StateType state = GetState(); 4716 if (StateIsStoppedState(state, false)) 4717 { 4718 if (state == eStateExited) 4719 { 4720 int exit_status = GetExitStatus(); 4721 const char *exit_description = GetExitDescription(); 4722 strm.Printf ("Process %llu exited with status = %i (0x%8.8x) %s\n", 4723 GetID(), 4724 exit_status, 4725 exit_status, 4726 exit_description ? exit_description : ""); 4727 } 4728 else 4729 { 4730 if (state == eStateConnected) 4731 strm.Printf ("Connected to remote target.\n"); 4732 else 4733 strm.Printf ("Process %llu %s\n", GetID(), StateAsCString (state)); 4734 } 4735 } 4736 else 4737 { 4738 strm.Printf ("Process %llu is running.\n", GetID()); 4739 } 4740 } 4741 4742 size_t 4743 Process::GetThreadStatus (Stream &strm, 4744 bool only_threads_with_stop_reason, 4745 uint32_t start_frame, 4746 uint32_t num_frames, 4747 uint32_t num_frames_with_source) 4748 { 4749 size_t num_thread_infos_dumped = 0; 4750 4751 const size_t num_threads = GetThreadList().GetSize(); 4752 for (uint32_t i = 0; i < num_threads; i++) 4753 { 4754 Thread *thread = GetThreadList().GetThreadAtIndex(i).get(); 4755 if (thread) 4756 { 4757 if (only_threads_with_stop_reason) 4758 { 4759 if (thread->GetStopInfo().get() == NULL) 4760 continue; 4761 } 4762 thread->GetStatus (strm, 4763 start_frame, 4764 num_frames, 4765 num_frames_with_source); 4766 ++num_thread_infos_dumped; 4767 } 4768 } 4769 return num_thread_infos_dumped; 4770 } 4771 4772 void 4773 Process::AddInvalidMemoryRegion (const LoadRange ®ion) 4774 { 4775 m_memory_cache.AddInvalidRange(region.GetRangeBase(), region.GetByteSize()); 4776 } 4777 4778 bool 4779 Process::RemoveInvalidMemoryRange (const LoadRange ®ion) 4780 { 4781 return m_memory_cache.RemoveInvalidRange(region.GetRangeBase(), region.GetByteSize()); 4782 } 4783 4784 void 4785 Process::AddPreResumeAction (PreResumeActionCallback callback, void *baton) 4786 { 4787 m_pre_resume_actions.push_back(PreResumeCallbackAndBaton (callback, baton)); 4788 } 4789 4790 bool 4791 Process::RunPreResumeActions () 4792 { 4793 bool result = true; 4794 while (!m_pre_resume_actions.empty()) 4795 { 4796 struct PreResumeCallbackAndBaton action = m_pre_resume_actions.back(); 4797 m_pre_resume_actions.pop_back(); 4798 bool this_result = action.callback (action.baton); 4799 if (result == true) result = this_result; 4800 } 4801 return result; 4802 } 4803 4804 void 4805 Process::ClearPreResumeActions () 4806 { 4807 m_pre_resume_actions.clear(); 4808 } 4809 4810 void 4811 Process::Flush () 4812 { 4813 m_thread_list.Flush(); 4814 } 4815 4816 //-------------------------------------------------------------- 4817 // class Process::SettingsController 4818 //-------------------------------------------------------------- 4819 4820 Process::SettingsController::SettingsController () : 4821 UserSettingsController ("process", Target::GetSettingsController()) 4822 { 4823 } 4824 4825 Process::SettingsController::~SettingsController () 4826 { 4827 } 4828 4829 lldb::InstanceSettingsSP 4830 Process::SettingsController::CreateInstanceSettings (const char *instance_name) 4831 { 4832 lldb::InstanceSettingsSP new_settings_sp (new ProcessInstanceSettings (GetSettingsController(), 4833 false, 4834 instance_name)); 4835 return new_settings_sp; 4836 } 4837 4838 //-------------------------------------------------------------- 4839 // class ProcessInstanceSettings 4840 //-------------------------------------------------------------- 4841 4842 ProcessInstanceSettings::ProcessInstanceSettings 4843 ( 4844 const UserSettingsControllerSP &owner_sp, 4845 bool live_instance, 4846 const char *name 4847 ) : 4848 InstanceSettings (owner_sp, name ? name : InstanceSettings::InvalidName().AsCString(), live_instance) 4849 { 4850 // CopyInstanceSettings is a pure virtual function in InstanceSettings; it therefore cannot be called 4851 // until the vtables for ProcessInstanceSettings are properly set up, i.e. AFTER all the initializers. 4852 // For this reason it has to be called here, rather than in the initializer or in the parent constructor. 4853 // This is true for CreateInstanceName() too. 4854 4855 if (GetInstanceName () == InstanceSettings::InvalidName()) 4856 { 4857 ChangeInstanceName (std::string (CreateInstanceName().AsCString())); 4858 owner_sp->RegisterInstanceSettings (this); 4859 } 4860 4861 if (live_instance) 4862 { 4863 const lldb::InstanceSettingsSP &pending_settings = owner_sp->FindPendingSettings (m_instance_name); 4864 CopyInstanceSettings (pending_settings,false); 4865 } 4866 } 4867 4868 ProcessInstanceSettings::ProcessInstanceSettings (const ProcessInstanceSettings &rhs) : 4869 InstanceSettings (Process::GetSettingsController(), CreateInstanceName().AsCString()) 4870 { 4871 if (m_instance_name != InstanceSettings::GetDefaultName()) 4872 { 4873 UserSettingsControllerSP owner_sp (m_owner_wp.lock()); 4874 if (owner_sp) 4875 { 4876 CopyInstanceSettings (owner_sp->FindPendingSettings (m_instance_name), false); 4877 owner_sp->RemovePendingSettings (m_instance_name); 4878 } 4879 } 4880 } 4881 4882 ProcessInstanceSettings::~ProcessInstanceSettings () 4883 { 4884 } 4885 4886 ProcessInstanceSettings& 4887 ProcessInstanceSettings::operator= (const ProcessInstanceSettings &rhs) 4888 { 4889 if (this != &rhs) 4890 { 4891 } 4892 4893 return *this; 4894 } 4895 4896 4897 void 4898 ProcessInstanceSettings::UpdateInstanceSettingsVariable (const ConstString &var_name, 4899 const char *index_value, 4900 const char *value, 4901 const ConstString &instance_name, 4902 const SettingEntry &entry, 4903 VarSetOperationType op, 4904 Error &err, 4905 bool pending) 4906 { 4907 if (var_name == GetDisableMemoryCacheVarName()) 4908 { 4909 bool success; 4910 bool result = Args::StringToBoolean(value, false, &success); 4911 4912 if (success) 4913 { 4914 m_disable_memory_cache = result; 4915 } 4916 else 4917 { 4918 err.SetErrorStringWithFormat ("Bad value \"%s\" for %s, should be Boolean.", value, GetDisableMemoryCacheVarName().AsCString()); 4919 } 4920 4921 } 4922 } 4923 4924 void 4925 ProcessInstanceSettings::CopyInstanceSettings (const lldb::InstanceSettingsSP &new_settings, 4926 bool pending) 4927 { 4928 if (new_settings.get() == NULL) 4929 return; 4930 4931 ProcessInstanceSettings *new_settings_ptr = static_cast <ProcessInstanceSettings *> (new_settings.get()); 4932 4933 if (!new_settings_ptr) 4934 return; 4935 4936 *this = *new_settings_ptr; 4937 } 4938 4939 bool 4940 ProcessInstanceSettings::GetInstanceSettingsValue (const SettingEntry &entry, 4941 const ConstString &var_name, 4942 StringList &value, 4943 Error *err) 4944 { 4945 if (var_name == GetDisableMemoryCacheVarName()) 4946 { 4947 value.AppendString(m_disable_memory_cache ? "true" : "false"); 4948 return true; 4949 } 4950 else 4951 { 4952 if (err) 4953 err->SetErrorStringWithFormat ("unrecognized variable name '%s'", var_name.AsCString()); 4954 return false; 4955 } 4956 } 4957 4958 const ConstString 4959 ProcessInstanceSettings::CreateInstanceName () 4960 { 4961 static int instance_count = 1; 4962 StreamString sstr; 4963 4964 sstr.Printf ("process_%d", instance_count); 4965 ++instance_count; 4966 4967 const ConstString ret_val (sstr.GetData()); 4968 return ret_val; 4969 } 4970 4971 const ConstString & 4972 ProcessInstanceSettings::GetDisableMemoryCacheVarName () const 4973 { 4974 static ConstString disable_memory_cache_var_name ("disable-memory-cache"); 4975 4976 return disable_memory_cache_var_name; 4977 } 4978 4979 //-------------------------------------------------- 4980 // SettingsController Variable Tables 4981 //-------------------------------------------------- 4982 4983 SettingEntry 4984 Process::SettingsController::global_settings_table[] = 4985 { 4986 //{ "var-name", var-type , "default", enum-table, init'd, hidden, "help-text"}, 4987 { NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL } 4988 }; 4989 4990 4991 SettingEntry 4992 Process::SettingsController::instance_settings_table[] = 4993 { 4994 //{ "var-name", var-type, "default", enum-table, init'd, hidden, "help-text"}, 4995 { "disable-memory-cache", eSetVarTypeBoolean, 4996 #ifdef ENABLE_MEMORY_CACHING 4997 "false", 4998 #else 4999 "true", 5000 #endif 5001 NULL, false, false, "Disable reading and caching of memory in fixed-size units." }, 5002 { NULL, eSetVarTypeNone, NULL, NULL, false, false, NULL } 5003 }; 5004 5005 5006 5007 5008