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.SetPrintErrors(true); 299 options.SetAddToHistory(false); 300 301 debugger.GetCommandInterpreter().HandleCommands(commands, &exe_ctx, 302 options, result); 303 result.GetImmediateOutputStream()->Flush(); 304 result.GetImmediateErrorStream()->Flush(); 305 } 306 } 307 return ret_value; 308 } 309 310 class CommandOptions : public Options { 311 public: 312 CommandOptions() 313 : Options(), m_use_commands(false), m_use_script_language(false), 314 m_script_language(eScriptLanguageNone), m_use_one_liner(false), 315 m_one_liner(), m_function_name() {} 316 317 ~CommandOptions() override = default; 318 319 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 320 ExecutionContext *execution_context) override { 321 Status error; 322 const int short_option = m_getopt_table[option_idx].val; 323 324 switch (short_option) { 325 case 'o': 326 m_use_one_liner = true; 327 m_one_liner = option_arg; 328 break; 329 330 case 's': 331 m_script_language = (lldb::ScriptLanguage)OptionArgParser::ToOptionEnum( 332 option_arg, GetDefinitions()[option_idx].enum_values, 333 eScriptLanguageNone, error); 334 335 m_use_script_language = (m_script_language == eScriptLanguagePython || 336 m_script_language == eScriptLanguageDefault); 337 break; 338 339 case 'e': { 340 bool success = false; 341 m_stop_on_error = 342 OptionArgParser::ToBoolean(option_arg, false, &success); 343 if (!success) 344 error.SetErrorStringWithFormat( 345 "invalid value for stop-on-error: \"%s\"", 346 option_arg.str().c_str()); 347 } break; 348 349 case 'F': 350 m_use_one_liner = false; 351 m_use_script_language = true; 352 m_function_name.assign(option_arg); 353 break; 354 355 default: 356 break; 357 } 358 return error; 359 } 360 361 void OptionParsingStarting(ExecutionContext *execution_context) override { 362 m_use_commands = true; 363 m_use_script_language = false; 364 m_script_language = eScriptLanguageNone; 365 366 m_use_one_liner = false; 367 m_stop_on_error = true; 368 m_one_liner.clear(); 369 m_function_name.clear(); 370 } 371 372 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 373 return llvm::makeArrayRef(g_watchpoint_command_add_options); 374 } 375 376 // Instance variables to hold the values for command options. 377 378 bool m_use_commands; 379 bool m_use_script_language; 380 lldb::ScriptLanguage m_script_language; 381 382 // Instance variables to hold the values for one_liner options. 383 bool m_use_one_liner; 384 std::string m_one_liner; 385 bool m_stop_on_error; 386 std::string m_function_name; 387 }; 388 389 protected: 390 bool DoExecute(Args &command, CommandReturnObject &result) override { 391 Target *target = GetDebugger().GetSelectedTarget().get(); 392 393 if (target == nullptr) { 394 result.AppendError("There is not a current executable; there are no " 395 "watchpoints to which to add commands"); 396 result.SetStatus(eReturnStatusFailed); 397 return false; 398 } 399 400 const WatchpointList &watchpoints = target->GetWatchpointList(); 401 size_t num_watchpoints = watchpoints.GetSize(); 402 403 if (num_watchpoints == 0) { 404 result.AppendError("No watchpoints exist to have commands added"); 405 result.SetStatus(eReturnStatusFailed); 406 return false; 407 } 408 409 if (!m_options.m_use_script_language && 410 !m_options.m_function_name.empty()) { 411 result.AppendError("need to enable scripting to have a function run as a " 412 "watchpoint command"); 413 result.SetStatus(eReturnStatusFailed); 414 return false; 415 } 416 417 std::vector<uint32_t> valid_wp_ids; 418 if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, 419 valid_wp_ids)) { 420 result.AppendError("Invalid watchpoints specification."); 421 result.SetStatus(eReturnStatusFailed); 422 return false; 423 } 424 425 result.SetStatus(eReturnStatusSuccessFinishNoResult); 426 const size_t count = valid_wp_ids.size(); 427 for (size_t i = 0; i < count; ++i) { 428 uint32_t cur_wp_id = valid_wp_ids.at(i); 429 if (cur_wp_id != LLDB_INVALID_WATCH_ID) { 430 Watchpoint *wp = target->GetWatchpointList().FindByID(cur_wp_id).get(); 431 // Sanity check wp first. 432 if (wp == nullptr) 433 continue; 434 435 WatchpointOptions *wp_options = wp->GetOptions(); 436 // Skip this watchpoint if wp_options is not good. 437 if (wp_options == nullptr) 438 continue; 439 440 // If we are using script language, get the script interpreter in order 441 // to set or collect command callback. Otherwise, call the methods 442 // associated with this object. 443 if (m_options.m_use_script_language) { 444 // Special handling for one-liner specified inline. 445 if (m_options.m_use_one_liner) { 446 GetDebugger().GetScriptInterpreter()->SetWatchpointCommandCallback( 447 wp_options, m_options.m_one_liner.c_str()); 448 } 449 // Special handling for using a Python function by name instead of 450 // extending the watchpoint callback data structures, we just 451 // automatize what the user would do manually: make their watchpoint 452 // command be a function call 453 else if (!m_options.m_function_name.empty()) { 454 std::string oneliner(m_options.m_function_name); 455 oneliner += "(frame, wp, internal_dict)"; 456 GetDebugger().GetScriptInterpreter()->SetWatchpointCommandCallback( 457 wp_options, oneliner.c_str()); 458 } else { 459 GetDebugger() 460 .GetScriptInterpreter() 461 ->CollectDataForWatchpointCommandCallback(wp_options, result); 462 } 463 } else { 464 // Special handling for one-liner specified inline. 465 if (m_options.m_use_one_liner) 466 SetWatchpointCommandCallback(wp_options, 467 m_options.m_one_liner.c_str()); 468 else 469 CollectDataForWatchpointCommandCallback(wp_options, result); 470 } 471 } 472 } 473 474 return result.Succeeded(); 475 } 476 477 private: 478 CommandOptions m_options; 479 }; 480 481 // CommandObjectWatchpointCommandDelete 482 483 class CommandObjectWatchpointCommandDelete : public CommandObjectParsed { 484 public: 485 CommandObjectWatchpointCommandDelete(CommandInterpreter &interpreter) 486 : CommandObjectParsed(interpreter, "delete", 487 "Delete the set of commands from a watchpoint.", 488 nullptr) { 489 CommandArgumentEntry arg; 490 CommandArgumentData wp_id_arg; 491 492 // Define the first (and only) variant of this arg. 493 wp_id_arg.arg_type = eArgTypeWatchpointID; 494 wp_id_arg.arg_repetition = eArgRepeatPlain; 495 496 // There is only one variant this argument could be; put it into the 497 // argument entry. 498 arg.push_back(wp_id_arg); 499 500 // Push the data for the first argument into the m_arguments vector. 501 m_arguments.push_back(arg); 502 } 503 504 ~CommandObjectWatchpointCommandDelete() override = default; 505 506 protected: 507 bool DoExecute(Args &command, CommandReturnObject &result) override { 508 Target *target = GetDebugger().GetSelectedTarget().get(); 509 510 if (target == nullptr) { 511 result.AppendError("There is not a current executable; there are no " 512 "watchpoints from which to delete commands"); 513 result.SetStatus(eReturnStatusFailed); 514 return false; 515 } 516 517 const WatchpointList &watchpoints = target->GetWatchpointList(); 518 size_t num_watchpoints = watchpoints.GetSize(); 519 520 if (num_watchpoints == 0) { 521 result.AppendError("No watchpoints exist to have commands deleted"); 522 result.SetStatus(eReturnStatusFailed); 523 return false; 524 } 525 526 if (command.GetArgumentCount() == 0) { 527 result.AppendError( 528 "No watchpoint specified from which to delete the commands"); 529 result.SetStatus(eReturnStatusFailed); 530 return false; 531 } 532 533 std::vector<uint32_t> valid_wp_ids; 534 if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, 535 valid_wp_ids)) { 536 result.AppendError("Invalid watchpoints specification."); 537 result.SetStatus(eReturnStatusFailed); 538 return false; 539 } 540 541 result.SetStatus(eReturnStatusSuccessFinishNoResult); 542 const size_t count = valid_wp_ids.size(); 543 for (size_t i = 0; i < count; ++i) { 544 uint32_t cur_wp_id = valid_wp_ids.at(i); 545 if (cur_wp_id != LLDB_INVALID_WATCH_ID) { 546 Watchpoint *wp = target->GetWatchpointList().FindByID(cur_wp_id).get(); 547 if (wp) 548 wp->ClearCallback(); 549 } else { 550 result.AppendErrorWithFormat("Invalid watchpoint ID: %u.\n", cur_wp_id); 551 result.SetStatus(eReturnStatusFailed); 552 return false; 553 } 554 } 555 return result.Succeeded(); 556 } 557 }; 558 559 // CommandObjectWatchpointCommandList 560 561 class CommandObjectWatchpointCommandList : public CommandObjectParsed { 562 public: 563 CommandObjectWatchpointCommandList(CommandInterpreter &interpreter) 564 : CommandObjectParsed(interpreter, "list", "List the script or set of " 565 "commands to be executed when " 566 "the watchpoint is hit.", 567 nullptr) { 568 CommandArgumentEntry arg; 569 CommandArgumentData wp_id_arg; 570 571 // Define the first (and only) variant of this arg. 572 wp_id_arg.arg_type = eArgTypeWatchpointID; 573 wp_id_arg.arg_repetition = eArgRepeatPlain; 574 575 // There is only one variant this argument could be; put it into the 576 // argument entry. 577 arg.push_back(wp_id_arg); 578 579 // Push the data for the first argument into the m_arguments vector. 580 m_arguments.push_back(arg); 581 } 582 583 ~CommandObjectWatchpointCommandList() override = default; 584 585 protected: 586 bool DoExecute(Args &command, CommandReturnObject &result) override { 587 Target *target = GetDebugger().GetSelectedTarget().get(); 588 589 if (target == nullptr) { 590 result.AppendError("There is not a current executable; there are no " 591 "watchpoints for which to list commands"); 592 result.SetStatus(eReturnStatusFailed); 593 return false; 594 } 595 596 const WatchpointList &watchpoints = target->GetWatchpointList(); 597 size_t num_watchpoints = watchpoints.GetSize(); 598 599 if (num_watchpoints == 0) { 600 result.AppendError("No watchpoints exist for which to list commands"); 601 result.SetStatus(eReturnStatusFailed); 602 return false; 603 } 604 605 if (command.GetArgumentCount() == 0) { 606 result.AppendError( 607 "No watchpoint specified for which to list the commands"); 608 result.SetStatus(eReturnStatusFailed); 609 return false; 610 } 611 612 std::vector<uint32_t> valid_wp_ids; 613 if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, 614 valid_wp_ids)) { 615 result.AppendError("Invalid watchpoints specification."); 616 result.SetStatus(eReturnStatusFailed); 617 return false; 618 } 619 620 result.SetStatus(eReturnStatusSuccessFinishNoResult); 621 const size_t count = valid_wp_ids.size(); 622 for (size_t i = 0; i < count; ++i) { 623 uint32_t cur_wp_id = valid_wp_ids.at(i); 624 if (cur_wp_id != LLDB_INVALID_WATCH_ID) { 625 Watchpoint *wp = target->GetWatchpointList().FindByID(cur_wp_id).get(); 626 627 if (wp) { 628 const WatchpointOptions *wp_options = wp->GetOptions(); 629 if (wp_options) { 630 // Get the callback baton associated with the current watchpoint. 631 const Baton *baton = wp_options->GetBaton(); 632 if (baton) { 633 result.GetOutputStream().Printf("Watchpoint %u:\n", cur_wp_id); 634 result.GetOutputStream().IndentMore(); 635 baton->GetDescription(&result.GetOutputStream(), 636 eDescriptionLevelFull); 637 result.GetOutputStream().IndentLess(); 638 } else { 639 result.AppendMessageWithFormat( 640 "Watchpoint %u does not have an associated command.\n", 641 cur_wp_id); 642 } 643 } 644 result.SetStatus(eReturnStatusSuccessFinishResult); 645 } else { 646 result.AppendErrorWithFormat("Invalid watchpoint ID: %u.\n", 647 cur_wp_id); 648 result.SetStatus(eReturnStatusFailed); 649 } 650 } 651 } 652 653 return result.Succeeded(); 654 } 655 }; 656 657 // CommandObjectWatchpointCommand 658 659 CommandObjectWatchpointCommand::CommandObjectWatchpointCommand( 660 CommandInterpreter &interpreter) 661 : CommandObjectMultiword( 662 interpreter, "command", 663 "Commands for adding, removing and examining LLDB commands " 664 "executed when the watchpoint is hit (watchpoint 'commands').", 665 "command <sub-command> [<sub-command-options>] <watchpoint-id>") { 666 CommandObjectSP add_command_object( 667 new CommandObjectWatchpointCommandAdd(interpreter)); 668 CommandObjectSP delete_command_object( 669 new CommandObjectWatchpointCommandDelete(interpreter)); 670 CommandObjectSP list_command_object( 671 new CommandObjectWatchpointCommandList(interpreter)); 672 673 add_command_object->SetCommandName("watchpoint command add"); 674 delete_command_object->SetCommandName("watchpoint command delete"); 675 list_command_object->SetCommandName("watchpoint command list"); 676 677 LoadSubCommand("add", add_command_object); 678 LoadSubCommand("delete", delete_command_object); 679 LoadSubCommand("list", list_command_object); 680 } 681 682 CommandObjectWatchpointCommand::~CommandObjectWatchpointCommand() = default; 683