1 //===-- CommandObjectWatchpointCommand.cpp ----------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include <vector> 10 11 #include "CommandObjectWatchpoint.h" 12 #include "CommandObjectWatchpointCommand.h" 13 #include "lldb/Breakpoint/StoppointCallbackContext.h" 14 #include "lldb/Breakpoint/Watchpoint.h" 15 #include "lldb/Core/IOHandler.h" 16 #include "lldb/Host/OptionParser.h" 17 #include "lldb/Interpreter/CommandInterpreter.h" 18 #include "lldb/Interpreter/CommandReturnObject.h" 19 #include "lldb/Interpreter/OptionArgParser.h" 20 #include "lldb/Target/Target.h" 21 #include "lldb/Target/Thread.h" 22 #include "lldb/Utility/State.h" 23 24 using namespace lldb; 25 using namespace lldb_private; 26 27 // CommandObjectWatchpointCommandAdd 28 29 // FIXME: "script-type" needs to have its contents determined dynamically, so 30 // somebody can add a new scripting 31 // language to lldb and have it pickable here without having to change this 32 // enumeration by hand and rebuild lldb proper. 33 34 static constexpr OptionEnumValueElement g_script_option_enumeration[] = { 35 {eScriptLanguageNone, "command", 36 "Commands are in the lldb command interpreter language"}, 37 {eScriptLanguagePython, "python", "Commands are in the Python language."}, 38 {eSortOrderByName, "default-script", 39 "Commands are in the default scripting language."} }; 40 41 static constexpr OptionEnumValues ScriptOptionEnum() { 42 return OptionEnumValues(g_script_option_enumeration); 43 } 44 45 static constexpr OptionDefinition g_watchpoint_command_add_options[] = { 46 // clang-format off 47 { LLDB_OPT_SET_1, false, "one-liner", 'o', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeOneLiner, "Specify a one-line watchpoint command inline. Be sure to surround it with quotes." }, 48 { LLDB_OPT_SET_ALL, false, "stop-on-error", 'e', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeBoolean, "Specify whether watchpoint command execution should terminate on error." }, 49 { LLDB_OPT_SET_ALL, false, "script-type", 's', OptionParser::eRequiredArgument, nullptr, ScriptOptionEnum(), 0, eArgTypeNone, "Specify the language for the commands - if none is specified, the lldb command interpreter will be used." }, 50 { LLDB_OPT_SET_2, false, "python-function", 'F', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypePythonFunction, "Give the name of a Python function to run as command for this watchpoint. Be sure to give a module name if appropriate." } 51 // clang-format on 52 }; 53 54 class CommandObjectWatchpointCommandAdd : public CommandObjectParsed, 55 public IOHandlerDelegateMultiline { 56 public: 57 CommandObjectWatchpointCommandAdd(CommandInterpreter &interpreter) 58 : CommandObjectParsed(interpreter, "add", 59 "Add a set of LLDB commands to a watchpoint, to be " 60 "executed whenever the watchpoint is hit.", 61 nullptr), 62 IOHandlerDelegateMultiline("DONE", 63 IOHandlerDelegate::Completion::LLDBCommand), 64 m_options() { 65 SetHelpLong( 66 R"( 67 General information about entering watchpoint commands 68 ------------------------------------------------------ 69 70 )" 71 "This command will prompt for commands to be executed when the specified \ 72 watchpoint is hit. Each command is typed on its own line following the '> ' \ 73 prompt until 'DONE' is entered." 74 R"( 75 76 )" 77 "Syntactic errors may not be detected when initially entered, and many \ 78 malformed commands can silently fail when executed. If your watchpoint commands \ 79 do not appear to be executing, double-check the command syntax." 80 R"( 81 82 )" 83 "Note: You may enter any debugger command exactly as you would at the debugger \ 84 prompt. There is no limit to the number of commands supplied, but do NOT enter \ 85 more than one command per line." 86 R"( 87 88 Special information about PYTHON watchpoint commands 89 ---------------------------------------------------- 90 91 )" 92 "You may enter either one or more lines of Python, including function \ 93 definitions or calls to functions that will have been imported by the time \ 94 the code executes. Single line watchpoint commands will be interpreted 'as is' \ 95 when the watchpoint is hit. Multiple lines of Python will be wrapped in a \ 96 generated function, and a call to the function will be attached to the watchpoint." 97 R"( 98 99 This auto-generated function is passed in three arguments: 100 101 frame: an lldb.SBFrame object for the frame which hit the watchpoint. 102 103 wp: the watchpoint that was hit. 104 105 )" 106 "When specifying a python function with the --python-function option, you need \ 107 to supply the function name prepended by the module name:" 108 R"( 109 110 --python-function myutils.watchpoint_callback 111 112 The function itself must have the following prototype: 113 114 def watchpoint_callback(frame, wp): 115 # Your code goes here 116 117 )" 118 "The arguments are the same as the arguments passed to generated functions as \ 119 described above. Note that the global variable 'lldb.frame' will NOT be updated when \ 120 this function is called, so be sure to use the 'frame' argument. The 'frame' argument \ 121 can get you to the thread via frame.GetThread(), the thread can get you to the \ 122 process via thread.GetProcess(), and the process can get you back to the target \ 123 via process.GetTarget()." 124 R"( 125 126 )" 127 "Important Note: As Python code gets collected into functions, access to global \ 128 variables requires explicit scoping using the 'global' keyword. Be sure to use correct \ 129 Python syntax, including indentation, when entering Python watchpoint commands." 130 R"( 131 132 Example Python one-line watchpoint command: 133 134 (lldb) watchpoint command add -s python 1 135 Enter your Python command(s). Type 'DONE' to end. 136 > print "Hit this watchpoint!" 137 > DONE 138 139 As a convenience, this also works for a short Python one-liner: 140 141 (lldb) watchpoint command add -s python 1 -o 'import time; print time.asctime()' 142 (lldb) run 143 Launching '.../a.out' (x86_64) 144 (lldb) Fri Sep 10 12:17:45 2010 145 Process 21778 Stopped 146 * thread #1: tid = 0x2e03, 0x0000000100000de8 a.out`c + 7 at main.c:39, stop reason = watchpoint 1.1, queue = com.apple.main-thread 147 36 148 37 int c(int val) 149 38 { 150 39 -> return val + 3; 151 40 } 152 41 153 42 int main (int argc, char const *argv[]) 154 155 Example multiple line Python watchpoint command, using function definition: 156 157 (lldb) watchpoint command add -s python 1 158 Enter your Python command(s). Type 'DONE' to end. 159 > def watchpoint_output (wp_no): 160 > out_string = "Hit watchpoint number " + repr (wp_no) 161 > print out_string 162 > return True 163 > watchpoint_output (1) 164 > DONE 165 166 Example multiple line Python watchpoint command, using 'loose' Python: 167 168 (lldb) watchpoint command add -s p 1 169 Enter your Python command(s). Type 'DONE' to end. 170 > global wp_count 171 > wp_count = wp_count + 1 172 > print "Hit this watchpoint " + repr(wp_count) + " times!" 173 > DONE 174 175 )" 176 "In this case, since there is a reference to a global variable, \ 177 'wp_count', you will also need to make sure 'wp_count' exists and is \ 178 initialized:" 179 R"( 180 181 (lldb) script 182 >>> wp_count = 0 183 >>> quit() 184 185 )" 186 "Final Note: A warning that no watchpoint command was generated when there \ 187 are no syntax errors may indicate that a function was declared but never called."); 188 189 CommandArgumentEntry arg; 190 CommandArgumentData wp_id_arg; 191 192 // Define the first (and only) variant of this arg. 193 wp_id_arg.arg_type = eArgTypeWatchpointID; 194 wp_id_arg.arg_repetition = eArgRepeatPlain; 195 196 // There is only one variant this argument could be; put it into the 197 // argument entry. 198 arg.push_back(wp_id_arg); 199 200 // Push the data for the first argument into the m_arguments vector. 201 m_arguments.push_back(arg); 202 } 203 204 ~CommandObjectWatchpointCommandAdd() override = default; 205 206 Options *GetOptions() override { return &m_options; } 207 208 void IOHandlerActivated(IOHandler &io_handler, bool interactive) override { 209 StreamFileSP output_sp(io_handler.GetOutputStreamFile()); 210 if (output_sp && interactive) { 211 output_sp->PutCString( 212 "Enter your debugger command(s). Type 'DONE' to end.\n"); 213 output_sp->Flush(); 214 } 215 } 216 217 void IOHandlerInputComplete(IOHandler &io_handler, 218 std::string &line) override { 219 io_handler.SetIsDone(true); 220 221 // The WatchpointOptions object is owned by the watchpoint or watchpoint 222 // location 223 WatchpointOptions *wp_options = 224 (WatchpointOptions *)io_handler.GetUserData(); 225 if (wp_options) { 226 std::unique_ptr<WatchpointOptions::CommandData> data_up( 227 new WatchpointOptions::CommandData()); 228 if (data_up) { 229 data_up->user_source.SplitIntoLines(line); 230 auto baton_sp = std::make_shared<WatchpointOptions::CommandBaton>( 231 std::move(data_up)); 232 wp_options->SetCallback(WatchpointOptionsCallbackFunction, baton_sp); 233 } 234 } 235 } 236 237 void CollectDataForWatchpointCommandCallback(WatchpointOptions *wp_options, 238 CommandReturnObject &result) { 239 m_interpreter.GetLLDBCommandsFromIOHandler( 240 "> ", // Prompt 241 *this, // IOHandlerDelegate 242 true, // Run IOHandler in async mode 243 wp_options); // Baton for the "io_handler" that will be passed back into 244 // our IOHandlerDelegate functions 245 } 246 247 /// Set a one-liner as the callback for the watchpoint. 248 void SetWatchpointCommandCallback(WatchpointOptions *wp_options, 249 const char *oneliner) { 250 std::unique_ptr<WatchpointOptions::CommandData> data_up( 251 new WatchpointOptions::CommandData()); 252 253 // It's necessary to set both user_source and script_source to the 254 // oneliner. The former is used to generate callback description (as in 255 // watchpoint command list) while the latter is used for Python to 256 // interpret during the actual callback. 257 data_up->user_source.AppendString(oneliner); 258 data_up->script_source.assign(oneliner); 259 data_up->stop_on_error = m_options.m_stop_on_error; 260 261 auto baton_sp = 262 std::make_shared<WatchpointOptions::CommandBaton>(std::move(data_up)); 263 wp_options->SetCallback(WatchpointOptionsCallbackFunction, baton_sp); 264 } 265 266 static bool 267 WatchpointOptionsCallbackFunction(void *baton, 268 StoppointCallbackContext *context, 269 lldb::user_id_t watch_id) { 270 bool ret_value = true; 271 if (baton == nullptr) 272 return true; 273 274 WatchpointOptions::CommandData *data = 275 (WatchpointOptions::CommandData *)baton; 276 StringList &commands = data->user_source; 277 278 if (commands.GetSize() > 0) { 279 ExecutionContext exe_ctx(context->exe_ctx_ref); 280 Target *target = exe_ctx.GetTargetPtr(); 281 if (target) { 282 CommandReturnObject result; 283 Debugger &debugger = target->GetDebugger(); 284 // Rig up the results secondary output stream to the debugger's, so the 285 // output will come out synchronously if the debugger is set up that 286 // way. 287 288 StreamSP output_stream(debugger.GetAsyncOutputStream()); 289 StreamSP error_stream(debugger.GetAsyncErrorStream()); 290 result.SetImmediateOutputStream(output_stream); 291 result.SetImmediateErrorStream(error_stream); 292 293 CommandInterpreterRunOptions options; 294 options.SetStopOnContinue(true); 295 options.SetStopOnError(data->stop_on_error); 296 options.SetEchoCommands(false); 297 options.SetPrintResults(true); 298 options.SetAddToHistory(false); 299 300 debugger.GetCommandInterpreter().HandleCommands(commands, &exe_ctx, 301 options, result); 302 result.GetImmediateOutputStream()->Flush(); 303 result.GetImmediateErrorStream()->Flush(); 304 } 305 } 306 return ret_value; 307 } 308 309 class CommandOptions : public Options { 310 public: 311 CommandOptions() 312 : Options(), m_use_commands(false), m_use_script_language(false), 313 m_script_language(eScriptLanguageNone), m_use_one_liner(false), 314 m_one_liner(), m_function_name() {} 315 316 ~CommandOptions() override = default; 317 318 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 319 ExecutionContext *execution_context) override { 320 Status error; 321 const int short_option = m_getopt_table[option_idx].val; 322 323 switch (short_option) { 324 case 'o': 325 m_use_one_liner = true; 326 m_one_liner = option_arg; 327 break; 328 329 case 's': 330 m_script_language = (lldb::ScriptLanguage)OptionArgParser::ToOptionEnum( 331 option_arg, GetDefinitions()[option_idx].enum_values, 332 eScriptLanguageNone, error); 333 334 m_use_script_language = (m_script_language == eScriptLanguagePython || 335 m_script_language == eScriptLanguageDefault); 336 break; 337 338 case 'e': { 339 bool success = false; 340 m_stop_on_error = 341 OptionArgParser::ToBoolean(option_arg, false, &success); 342 if (!success) 343 error.SetErrorStringWithFormat( 344 "invalid value for stop-on-error: \"%s\"", 345 option_arg.str().c_str()); 346 } break; 347 348 case 'F': 349 m_use_one_liner = false; 350 m_use_script_language = true; 351 m_function_name.assign(option_arg); 352 break; 353 354 default: 355 break; 356 } 357 return error; 358 } 359 360 void OptionParsingStarting(ExecutionContext *execution_context) override { 361 m_use_commands = true; 362 m_use_script_language = false; 363 m_script_language = eScriptLanguageNone; 364 365 m_use_one_liner = false; 366 m_stop_on_error = true; 367 m_one_liner.clear(); 368 m_function_name.clear(); 369 } 370 371 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 372 return llvm::makeArrayRef(g_watchpoint_command_add_options); 373 } 374 375 // Instance variables to hold the values for command options. 376 377 bool m_use_commands; 378 bool m_use_script_language; 379 lldb::ScriptLanguage m_script_language; 380 381 // Instance variables to hold the values for one_liner options. 382 bool m_use_one_liner; 383 std::string m_one_liner; 384 bool m_stop_on_error; 385 std::string m_function_name; 386 }; 387 388 protected: 389 bool DoExecute(Args &command, CommandReturnObject &result) override { 390 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 391 392 if (target == nullptr) { 393 result.AppendError("There is not a current executable; there are no " 394 "watchpoints to which to add commands"); 395 result.SetStatus(eReturnStatusFailed); 396 return false; 397 } 398 399 const WatchpointList &watchpoints = target->GetWatchpointList(); 400 size_t num_watchpoints = watchpoints.GetSize(); 401 402 if (num_watchpoints == 0) { 403 result.AppendError("No watchpoints exist to have commands added"); 404 result.SetStatus(eReturnStatusFailed); 405 return false; 406 } 407 408 if (!m_options.m_use_script_language && 409 !m_options.m_function_name.empty()) { 410 result.AppendError("need to enable scripting to have a function run as a " 411 "watchpoint command"); 412 result.SetStatus(eReturnStatusFailed); 413 return false; 414 } 415 416 std::vector<uint32_t> valid_wp_ids; 417 if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, 418 valid_wp_ids)) { 419 result.AppendError("Invalid watchpoints specification."); 420 result.SetStatus(eReturnStatusFailed); 421 return false; 422 } 423 424 result.SetStatus(eReturnStatusSuccessFinishNoResult); 425 const size_t count = valid_wp_ids.size(); 426 for (size_t i = 0; i < count; ++i) { 427 uint32_t cur_wp_id = valid_wp_ids.at(i); 428 if (cur_wp_id != LLDB_INVALID_WATCH_ID) { 429 Watchpoint *wp = target->GetWatchpointList().FindByID(cur_wp_id).get(); 430 // Sanity check wp first. 431 if (wp == nullptr) 432 continue; 433 434 WatchpointOptions *wp_options = wp->GetOptions(); 435 // Skip this watchpoint if wp_options is not good. 436 if (wp_options == nullptr) 437 continue; 438 439 // If we are using script language, get the script interpreter in order 440 // to set or collect command callback. Otherwise, call the methods 441 // associated with this object. 442 if (m_options.m_use_script_language) { 443 // Special handling for one-liner specified inline. 444 if (m_options.m_use_one_liner) { 445 m_interpreter.GetScriptInterpreter()->SetWatchpointCommandCallback( 446 wp_options, m_options.m_one_liner.c_str()); 447 } 448 // Special handling for using a Python function by name instead of 449 // extending the watchpoint callback data structures, we just 450 // automatize what the user would do manually: make their watchpoint 451 // command be a function call 452 else if (!m_options.m_function_name.empty()) { 453 std::string oneliner(m_options.m_function_name); 454 oneliner += "(frame, wp, internal_dict)"; 455 m_interpreter.GetScriptInterpreter()->SetWatchpointCommandCallback( 456 wp_options, oneliner.c_str()); 457 } else { 458 m_interpreter.GetScriptInterpreter() 459 ->CollectDataForWatchpointCommandCallback(wp_options, result); 460 } 461 } else { 462 // Special handling for one-liner specified inline. 463 if (m_options.m_use_one_liner) 464 SetWatchpointCommandCallback(wp_options, 465 m_options.m_one_liner.c_str()); 466 else 467 CollectDataForWatchpointCommandCallback(wp_options, result); 468 } 469 } 470 } 471 472 return result.Succeeded(); 473 } 474 475 private: 476 CommandOptions m_options; 477 }; 478 479 // CommandObjectWatchpointCommandDelete 480 481 class CommandObjectWatchpointCommandDelete : public CommandObjectParsed { 482 public: 483 CommandObjectWatchpointCommandDelete(CommandInterpreter &interpreter) 484 : CommandObjectParsed(interpreter, "delete", 485 "Delete the set of commands from a watchpoint.", 486 nullptr) { 487 CommandArgumentEntry arg; 488 CommandArgumentData wp_id_arg; 489 490 // Define the first (and only) variant of this arg. 491 wp_id_arg.arg_type = eArgTypeWatchpointID; 492 wp_id_arg.arg_repetition = eArgRepeatPlain; 493 494 // There is only one variant this argument could be; put it into the 495 // argument entry. 496 arg.push_back(wp_id_arg); 497 498 // Push the data for the first argument into the m_arguments vector. 499 m_arguments.push_back(arg); 500 } 501 502 ~CommandObjectWatchpointCommandDelete() override = default; 503 504 protected: 505 bool DoExecute(Args &command, CommandReturnObject &result) override { 506 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 507 508 if (target == nullptr) { 509 result.AppendError("There is not a current executable; there are no " 510 "watchpoints from which to delete commands"); 511 result.SetStatus(eReturnStatusFailed); 512 return false; 513 } 514 515 const WatchpointList &watchpoints = target->GetWatchpointList(); 516 size_t num_watchpoints = watchpoints.GetSize(); 517 518 if (num_watchpoints == 0) { 519 result.AppendError("No watchpoints exist to have commands deleted"); 520 result.SetStatus(eReturnStatusFailed); 521 return false; 522 } 523 524 if (command.GetArgumentCount() == 0) { 525 result.AppendError( 526 "No watchpoint specified from which to delete the commands"); 527 result.SetStatus(eReturnStatusFailed); 528 return false; 529 } 530 531 std::vector<uint32_t> valid_wp_ids; 532 if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, 533 valid_wp_ids)) { 534 result.AppendError("Invalid watchpoints specification."); 535 result.SetStatus(eReturnStatusFailed); 536 return false; 537 } 538 539 result.SetStatus(eReturnStatusSuccessFinishNoResult); 540 const size_t count = valid_wp_ids.size(); 541 for (size_t i = 0; i < count; ++i) { 542 uint32_t cur_wp_id = valid_wp_ids.at(i); 543 if (cur_wp_id != LLDB_INVALID_WATCH_ID) { 544 Watchpoint *wp = target->GetWatchpointList().FindByID(cur_wp_id).get(); 545 if (wp) 546 wp->ClearCallback(); 547 } else { 548 result.AppendErrorWithFormat("Invalid watchpoint ID: %u.\n", cur_wp_id); 549 result.SetStatus(eReturnStatusFailed); 550 return false; 551 } 552 } 553 return result.Succeeded(); 554 } 555 }; 556 557 // CommandObjectWatchpointCommandList 558 559 class CommandObjectWatchpointCommandList : public CommandObjectParsed { 560 public: 561 CommandObjectWatchpointCommandList(CommandInterpreter &interpreter) 562 : CommandObjectParsed(interpreter, "list", "List the script or set of " 563 "commands to be executed when " 564 "the watchpoint is hit.", 565 nullptr) { 566 CommandArgumentEntry arg; 567 CommandArgumentData wp_id_arg; 568 569 // Define the first (and only) variant of this arg. 570 wp_id_arg.arg_type = eArgTypeWatchpointID; 571 wp_id_arg.arg_repetition = eArgRepeatPlain; 572 573 // There is only one variant this argument could be; put it into the 574 // argument entry. 575 arg.push_back(wp_id_arg); 576 577 // Push the data for the first argument into the m_arguments vector. 578 m_arguments.push_back(arg); 579 } 580 581 ~CommandObjectWatchpointCommandList() override = default; 582 583 protected: 584 bool DoExecute(Args &command, CommandReturnObject &result) override { 585 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 586 587 if (target == nullptr) { 588 result.AppendError("There is not a current executable; there are no " 589 "watchpoints for which to list commands"); 590 result.SetStatus(eReturnStatusFailed); 591 return false; 592 } 593 594 const WatchpointList &watchpoints = target->GetWatchpointList(); 595 size_t num_watchpoints = watchpoints.GetSize(); 596 597 if (num_watchpoints == 0) { 598 result.AppendError("No watchpoints exist for which to list commands"); 599 result.SetStatus(eReturnStatusFailed); 600 return false; 601 } 602 603 if (command.GetArgumentCount() == 0) { 604 result.AppendError( 605 "No watchpoint specified for which to list the commands"); 606 result.SetStatus(eReturnStatusFailed); 607 return false; 608 } 609 610 std::vector<uint32_t> valid_wp_ids; 611 if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, 612 valid_wp_ids)) { 613 result.AppendError("Invalid watchpoints specification."); 614 result.SetStatus(eReturnStatusFailed); 615 return false; 616 } 617 618 result.SetStatus(eReturnStatusSuccessFinishNoResult); 619 const size_t count = valid_wp_ids.size(); 620 for (size_t i = 0; i < count; ++i) { 621 uint32_t cur_wp_id = valid_wp_ids.at(i); 622 if (cur_wp_id != LLDB_INVALID_WATCH_ID) { 623 Watchpoint *wp = target->GetWatchpointList().FindByID(cur_wp_id).get(); 624 625 if (wp) { 626 const WatchpointOptions *wp_options = wp->GetOptions(); 627 if (wp_options) { 628 // Get the callback baton associated with the current watchpoint. 629 const Baton *baton = wp_options->GetBaton(); 630 if (baton) { 631 result.GetOutputStream().Printf("Watchpoint %u:\n", cur_wp_id); 632 result.GetOutputStream().IndentMore(); 633 baton->GetDescription(&result.GetOutputStream(), 634 eDescriptionLevelFull); 635 result.GetOutputStream().IndentLess(); 636 } else { 637 result.AppendMessageWithFormat( 638 "Watchpoint %u does not have an associated command.\n", 639 cur_wp_id); 640 } 641 } 642 result.SetStatus(eReturnStatusSuccessFinishResult); 643 } else { 644 result.AppendErrorWithFormat("Invalid watchpoint ID: %u.\n", 645 cur_wp_id); 646 result.SetStatus(eReturnStatusFailed); 647 } 648 } 649 } 650 651 return result.Succeeded(); 652 } 653 }; 654 655 // CommandObjectWatchpointCommand 656 657 CommandObjectWatchpointCommand::CommandObjectWatchpointCommand( 658 CommandInterpreter &interpreter) 659 : CommandObjectMultiword( 660 interpreter, "command", 661 "Commands for adding, removing and examining LLDB commands " 662 "executed when the watchpoint is hit (watchpoint 'commands').", 663 "command <sub-command> [<sub-command-options>] <watchpoint-id>") { 664 CommandObjectSP add_command_object( 665 new CommandObjectWatchpointCommandAdd(interpreter)); 666 CommandObjectSP delete_command_object( 667 new CommandObjectWatchpointCommandDelete(interpreter)); 668 CommandObjectSP list_command_object( 669 new CommandObjectWatchpointCommandList(interpreter)); 670 671 add_command_object->SetCommandName("watchpoint command add"); 672 delete_command_object->SetCommandName("watchpoint command delete"); 673 list_command_object->SetCommandName("watchpoint command list"); 674 675 LoadSubCommand("add", add_command_object); 676 LoadSubCommand("delete", delete_command_object); 677 LoadSubCommand("list", list_command_object); 678 } 679 680 CommandObjectWatchpointCommand::~CommandObjectWatchpointCommand() = default; 681