| File: | build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/lldb/source/Breakpoint/Breakpoint.cpp |
| Warning: | line 197, column 3 Value stored to 'success' is never read |
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| 1 | //===-- Breakpoint.cpp ----------------------------------------------------===// |
| 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 "llvm/Support/Casting.h" |
| 10 | |
| 11 | #include "lldb/Breakpoint/Breakpoint.h" |
| 12 | #include "lldb/Breakpoint/BreakpointLocation.h" |
| 13 | #include "lldb/Breakpoint/BreakpointLocationCollection.h" |
| 14 | #include "lldb/Breakpoint/BreakpointPrecondition.h" |
| 15 | #include "lldb/Breakpoint/BreakpointResolver.h" |
| 16 | #include "lldb/Breakpoint/BreakpointResolverFileLine.h" |
| 17 | #include "lldb/Core/Address.h" |
| 18 | #include "lldb/Core/Module.h" |
| 19 | #include "lldb/Core/ModuleList.h" |
| 20 | #include "lldb/Core/SearchFilter.h" |
| 21 | #include "lldb/Core/Section.h" |
| 22 | #include "lldb/Symbol/CompileUnit.h" |
| 23 | #include "lldb/Symbol/Function.h" |
| 24 | #include "lldb/Symbol/Symbol.h" |
| 25 | #include "lldb/Symbol/SymbolContext.h" |
| 26 | #include "lldb/Target/SectionLoadList.h" |
| 27 | #include "lldb/Target/Target.h" |
| 28 | #include "lldb/Target/ThreadSpec.h" |
| 29 | #include "lldb/Utility/LLDBLog.h" |
| 30 | #include "lldb/Utility/Log.h" |
| 31 | #include "lldb/Utility/Stream.h" |
| 32 | #include "lldb/Utility/StreamString.h" |
| 33 | |
| 34 | #include <memory> |
| 35 | |
| 36 | using namespace lldb; |
| 37 | using namespace lldb_private; |
| 38 | using namespace llvm; |
| 39 | |
| 40 | ConstString Breakpoint::GetEventIdentifier() { |
| 41 | static ConstString g_identifier("event-identifier.breakpoint.changed"); |
| 42 | return g_identifier; |
| 43 | } |
| 44 | |
| 45 | const char *Breakpoint::g_option_names[static_cast<uint32_t>( |
| 46 | Breakpoint::OptionNames::LastOptionName)]{"Names", "Hardware"}; |
| 47 | |
| 48 | // Breakpoint constructor |
| 49 | Breakpoint::Breakpoint(Target &target, SearchFilterSP &filter_sp, |
| 50 | BreakpointResolverSP &resolver_sp, bool hardware, |
| 51 | bool resolve_indirect_symbols) |
| 52 | : m_being_created(true), m_hardware(hardware), m_target(target), |
| 53 | m_filter_sp(filter_sp), m_resolver_sp(resolver_sp), m_options(true), |
| 54 | m_locations(*this), m_resolve_indirect_symbols(resolve_indirect_symbols), |
| 55 | m_hit_counter() { |
| 56 | m_being_created = false; |
| 57 | } |
| 58 | |
| 59 | Breakpoint::Breakpoint(Target &new_target, const Breakpoint &source_bp) |
| 60 | : m_being_created(true), m_hardware(source_bp.m_hardware), |
| 61 | m_target(new_target), m_name_list(source_bp.m_name_list), |
| 62 | m_options(source_bp.m_options), m_locations(*this), |
| 63 | m_resolve_indirect_symbols(source_bp.m_resolve_indirect_symbols), |
| 64 | m_hit_counter() {} |
| 65 | |
| 66 | // Destructor |
| 67 | Breakpoint::~Breakpoint() = default; |
| 68 | |
| 69 | BreakpointSP Breakpoint::CopyFromBreakpoint(TargetSP new_target, |
| 70 | const Breakpoint& bp_to_copy_from) { |
| 71 | if (!new_target) |
| 72 | return BreakpointSP(); |
| 73 | |
| 74 | BreakpointSP bp(new Breakpoint(*new_target, bp_to_copy_from)); |
| 75 | // Now go through and copy the filter & resolver: |
| 76 | bp->m_resolver_sp = bp_to_copy_from.m_resolver_sp->CopyForBreakpoint(bp); |
| 77 | bp->m_filter_sp = bp_to_copy_from.m_filter_sp->CreateCopy(new_target); |
| 78 | return bp; |
| 79 | } |
| 80 | |
| 81 | // Serialization |
| 82 | StructuredData::ObjectSP Breakpoint::SerializeToStructuredData() { |
| 83 | // Serialize the resolver: |
| 84 | StructuredData::DictionarySP breakpoint_dict_sp( |
| 85 | new StructuredData::Dictionary()); |
| 86 | StructuredData::DictionarySP breakpoint_contents_sp( |
| 87 | new StructuredData::Dictionary()); |
| 88 | |
| 89 | if (!m_name_list.empty()) { |
| 90 | StructuredData::ArraySP names_array_sp(new StructuredData::Array()); |
| 91 | for (auto name : m_name_list) { |
| 92 | names_array_sp->AddItem( |
| 93 | StructuredData::StringSP(new StructuredData::String(name))); |
| 94 | } |
| 95 | breakpoint_contents_sp->AddItem(Breakpoint::GetKey(OptionNames::Names), |
| 96 | names_array_sp); |
| 97 | } |
| 98 | |
| 99 | breakpoint_contents_sp->AddBooleanItem( |
| 100 | Breakpoint::GetKey(OptionNames::Hardware), m_hardware); |
| 101 | |
| 102 | StructuredData::ObjectSP resolver_dict_sp( |
| 103 | m_resolver_sp->SerializeToStructuredData()); |
| 104 | if (!resolver_dict_sp) |
| 105 | return StructuredData::ObjectSP(); |
| 106 | |
| 107 | breakpoint_contents_sp->AddItem(BreakpointResolver::GetSerializationKey(), |
| 108 | resolver_dict_sp); |
| 109 | |
| 110 | StructuredData::ObjectSP filter_dict_sp( |
| 111 | m_filter_sp->SerializeToStructuredData()); |
| 112 | if (!filter_dict_sp) |
| 113 | return StructuredData::ObjectSP(); |
| 114 | |
| 115 | breakpoint_contents_sp->AddItem(SearchFilter::GetSerializationKey(), |
| 116 | filter_dict_sp); |
| 117 | |
| 118 | StructuredData::ObjectSP options_dict_sp( |
| 119 | m_options.SerializeToStructuredData()); |
| 120 | if (!options_dict_sp) |
| 121 | return StructuredData::ObjectSP(); |
| 122 | |
| 123 | breakpoint_contents_sp->AddItem(BreakpointOptions::GetSerializationKey(), |
| 124 | options_dict_sp); |
| 125 | |
| 126 | breakpoint_dict_sp->AddItem(GetSerializationKey(), breakpoint_contents_sp); |
| 127 | return breakpoint_dict_sp; |
| 128 | } |
| 129 | |
| 130 | lldb::BreakpointSP Breakpoint::CreateFromStructuredData( |
| 131 | TargetSP target_sp, StructuredData::ObjectSP &object_data, Status &error) { |
| 132 | BreakpointSP result_sp; |
| 133 | if (!target_sp) |
| 134 | return result_sp; |
| 135 | |
| 136 | StructuredData::Dictionary *breakpoint_dict = object_data->GetAsDictionary(); |
| 137 | |
| 138 | if (!breakpoint_dict || !breakpoint_dict->IsValid()) { |
| 139 | error.SetErrorString("Can't deserialize from an invalid data object."); |
| 140 | return result_sp; |
| 141 | } |
| 142 | |
| 143 | StructuredData::Dictionary *resolver_dict; |
| 144 | bool success = breakpoint_dict->GetValueForKeyAsDictionary( |
| 145 | BreakpointResolver::GetSerializationKey(), resolver_dict); |
| 146 | if (!success) { |
| 147 | error.SetErrorString("Breakpoint data missing toplevel resolver key"); |
| 148 | return result_sp; |
| 149 | } |
| 150 | |
| 151 | Status create_error; |
| 152 | BreakpointResolverSP resolver_sp = |
| 153 | BreakpointResolver::CreateFromStructuredData(*resolver_dict, |
| 154 | create_error); |
| 155 | if (create_error.Fail()) { |
| 156 | error.SetErrorStringWithFormat( |
| 157 | "Error creating breakpoint resolver from data: %s.", |
| 158 | create_error.AsCString()); |
| 159 | return result_sp; |
| 160 | } |
| 161 | |
| 162 | StructuredData::Dictionary *filter_dict; |
| 163 | success = breakpoint_dict->GetValueForKeyAsDictionary( |
| 164 | SearchFilter::GetSerializationKey(), filter_dict); |
| 165 | SearchFilterSP filter_sp; |
| 166 | if (!success) |
| 167 | filter_sp = |
| 168 | std::make_shared<SearchFilterForUnconstrainedSearches>(target_sp); |
| 169 | else { |
| 170 | filter_sp = SearchFilter::CreateFromStructuredData(target_sp, *filter_dict, |
| 171 | create_error); |
| 172 | if (create_error.Fail()) { |
| 173 | error.SetErrorStringWithFormat( |
| 174 | "Error creating breakpoint filter from data: %s.", |
| 175 | create_error.AsCString()); |
| 176 | return result_sp; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | std::unique_ptr<BreakpointOptions> options_up; |
| 181 | StructuredData::Dictionary *options_dict; |
| 182 | Target& target = *target_sp; |
| 183 | success = breakpoint_dict->GetValueForKeyAsDictionary( |
| 184 | BreakpointOptions::GetSerializationKey(), options_dict); |
| 185 | if (success) { |
| 186 | options_up = BreakpointOptions::CreateFromStructuredData( |
| 187 | target, *options_dict, create_error); |
| 188 | if (create_error.Fail()) { |
| 189 | error.SetErrorStringWithFormat( |
| 190 | "Error creating breakpoint options from data: %s.", |
| 191 | create_error.AsCString()); |
| 192 | return result_sp; |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | bool hardware = false; |
| 197 | success = breakpoint_dict->GetValueForKeyAsBoolean( |
Value stored to 'success' is never read | |
| 198 | Breakpoint::GetKey(OptionNames::Hardware), hardware); |
| 199 | |
| 200 | result_sp = target.CreateBreakpoint(filter_sp, resolver_sp, false, |
| 201 | hardware, true); |
| 202 | |
| 203 | if (result_sp && options_up) { |
| 204 | result_sp->m_options = *options_up; |
| 205 | } |
| 206 | |
| 207 | StructuredData::Array *names_array; |
| 208 | success = breakpoint_dict->GetValueForKeyAsArray( |
| 209 | Breakpoint::GetKey(OptionNames::Names), names_array); |
| 210 | if (success && names_array) { |
| 211 | size_t num_names = names_array->GetSize(); |
| 212 | for (size_t i = 0; i < num_names; i++) { |
| 213 | llvm::StringRef name; |
| 214 | Status error; |
| 215 | success = names_array->GetItemAtIndexAsString(i, name); |
| 216 | target.AddNameToBreakpoint(result_sp, name.str().c_str(), error); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | return result_sp; |
| 221 | } |
| 222 | |
| 223 | bool Breakpoint::SerializedBreakpointMatchesNames( |
| 224 | StructuredData::ObjectSP &bkpt_object_sp, std::vector<std::string> &names) { |
| 225 | if (!bkpt_object_sp) |
| 226 | return false; |
| 227 | |
| 228 | StructuredData::Dictionary *bkpt_dict = bkpt_object_sp->GetAsDictionary(); |
| 229 | if (!bkpt_dict) |
| 230 | return false; |
| 231 | |
| 232 | if (names.empty()) |
| 233 | return true; |
| 234 | |
| 235 | StructuredData::Array *names_array; |
| 236 | |
| 237 | bool success = |
| 238 | bkpt_dict->GetValueForKeyAsArray(GetKey(OptionNames::Names), names_array); |
| 239 | // If there are no names, it can't match these names; |
| 240 | if (!success) |
| 241 | return false; |
| 242 | |
| 243 | size_t num_names = names_array->GetSize(); |
| 244 | |
| 245 | for (size_t i = 0; i < num_names; i++) { |
| 246 | llvm::StringRef name; |
| 247 | if (names_array->GetItemAtIndexAsString(i, name)) { |
| 248 | if (llvm::is_contained(names, name)) |
| 249 | return true; |
| 250 | } |
| 251 | } |
| 252 | return false; |
| 253 | } |
| 254 | |
| 255 | const lldb::TargetSP Breakpoint::GetTargetSP() { |
| 256 | return m_target.shared_from_this(); |
| 257 | } |
| 258 | |
| 259 | bool Breakpoint::IsInternal() const { return LLDB_BREAK_ID_IS_INTERNAL(m_bid)((m_bid) < 0); } |
| 260 | |
| 261 | BreakpointLocationSP Breakpoint::AddLocation(const Address &addr, |
| 262 | bool *new_location) { |
| 263 | return m_locations.AddLocation(addr, m_resolve_indirect_symbols, |
| 264 | new_location); |
| 265 | } |
| 266 | |
| 267 | BreakpointLocationSP Breakpoint::FindLocationByAddress(const Address &addr) { |
| 268 | return m_locations.FindByAddress(addr); |
| 269 | } |
| 270 | |
| 271 | break_id_t Breakpoint::FindLocationIDByAddress(const Address &addr) { |
| 272 | return m_locations.FindIDByAddress(addr); |
| 273 | } |
| 274 | |
| 275 | BreakpointLocationSP Breakpoint::FindLocationByID(break_id_t bp_loc_id) { |
| 276 | return m_locations.FindByID(bp_loc_id); |
| 277 | } |
| 278 | |
| 279 | BreakpointLocationSP Breakpoint::GetLocationAtIndex(size_t index) { |
| 280 | return m_locations.GetByIndex(index); |
| 281 | } |
| 282 | |
| 283 | void Breakpoint::RemoveInvalidLocations(const ArchSpec &arch) { |
| 284 | m_locations.RemoveInvalidLocations(arch); |
| 285 | } |
| 286 | |
| 287 | // For each of the overall options we need to decide how they propagate to the |
| 288 | // location options. This will determine the precedence of options on the |
| 289 | // breakpoint vs. its locations. |
| 290 | |
| 291 | // Disable at the breakpoint level should override the location settings. That |
| 292 | // way you can conveniently turn off a whole breakpoint without messing up the |
| 293 | // individual settings. |
| 294 | |
| 295 | void Breakpoint::SetEnabled(bool enable) { |
| 296 | if (enable == m_options.IsEnabled()) |
| 297 | return; |
| 298 | |
| 299 | m_options.SetEnabled(enable); |
| 300 | if (enable) |
| 301 | m_locations.ResolveAllBreakpointSites(); |
| 302 | else |
| 303 | m_locations.ClearAllBreakpointSites(); |
| 304 | |
| 305 | SendBreakpointChangedEvent(enable ? eBreakpointEventTypeEnabled |
| 306 | : eBreakpointEventTypeDisabled); |
| 307 | } |
| 308 | |
| 309 | bool Breakpoint::IsEnabled() { return m_options.IsEnabled(); } |
| 310 | |
| 311 | void Breakpoint::SetIgnoreCount(uint32_t n) { |
| 312 | if (m_options.GetIgnoreCount() == n) |
| 313 | return; |
| 314 | |
| 315 | m_options.SetIgnoreCount(n); |
| 316 | SendBreakpointChangedEvent(eBreakpointEventTypeIgnoreChanged); |
| 317 | } |
| 318 | |
| 319 | void Breakpoint::DecrementIgnoreCount() { |
| 320 | uint32_t ignore = m_options.GetIgnoreCount(); |
| 321 | if (ignore != 0) |
| 322 | m_options.SetIgnoreCount(ignore - 1); |
| 323 | } |
| 324 | |
| 325 | uint32_t Breakpoint::GetIgnoreCount() const { |
| 326 | return m_options.GetIgnoreCount(); |
| 327 | } |
| 328 | |
| 329 | uint32_t Breakpoint::GetHitCount() const { return m_hit_counter.GetValue(); } |
| 330 | |
| 331 | bool Breakpoint::IsOneShot() const { return m_options.IsOneShot(); } |
| 332 | |
| 333 | void Breakpoint::SetOneShot(bool one_shot) { m_options.SetOneShot(one_shot); } |
| 334 | |
| 335 | bool Breakpoint::IsAutoContinue() const { return m_options.IsAutoContinue(); } |
| 336 | |
| 337 | void Breakpoint::SetAutoContinue(bool auto_continue) { |
| 338 | m_options.SetAutoContinue(auto_continue); |
| 339 | } |
| 340 | |
| 341 | void Breakpoint::SetThreadID(lldb::tid_t thread_id) { |
| 342 | if (m_options.GetThreadSpec()->GetTID() == thread_id) |
| 343 | return; |
| 344 | |
| 345 | m_options.GetThreadSpec()->SetTID(thread_id); |
| 346 | SendBreakpointChangedEvent(eBreakpointEventTypeThreadChanged); |
| 347 | } |
| 348 | |
| 349 | lldb::tid_t Breakpoint::GetThreadID() const { |
| 350 | if (m_options.GetThreadSpecNoCreate() == nullptr) |
| 351 | return LLDB_INVALID_THREAD_ID0; |
| 352 | else |
| 353 | return m_options.GetThreadSpecNoCreate()->GetTID(); |
| 354 | } |
| 355 | |
| 356 | void Breakpoint::SetThreadIndex(uint32_t index) { |
| 357 | if (m_options.GetThreadSpec()->GetIndex() == index) |
| 358 | return; |
| 359 | |
| 360 | m_options.GetThreadSpec()->SetIndex(index); |
| 361 | SendBreakpointChangedEvent(eBreakpointEventTypeThreadChanged); |
| 362 | } |
| 363 | |
| 364 | uint32_t Breakpoint::GetThreadIndex() const { |
| 365 | if (m_options.GetThreadSpecNoCreate() == nullptr) |
| 366 | return 0; |
| 367 | else |
| 368 | return m_options.GetThreadSpecNoCreate()->GetIndex(); |
| 369 | } |
| 370 | |
| 371 | void Breakpoint::SetThreadName(const char *thread_name) { |
| 372 | if (m_options.GetThreadSpec()->GetName() != nullptr && |
| 373 | ::strcmp(m_options.GetThreadSpec()->GetName(), thread_name) == 0) |
| 374 | return; |
| 375 | |
| 376 | m_options.GetThreadSpec()->SetName(thread_name); |
| 377 | SendBreakpointChangedEvent(eBreakpointEventTypeThreadChanged); |
| 378 | } |
| 379 | |
| 380 | const char *Breakpoint::GetThreadName() const { |
| 381 | if (m_options.GetThreadSpecNoCreate() == nullptr) |
| 382 | return nullptr; |
| 383 | else |
| 384 | return m_options.GetThreadSpecNoCreate()->GetName(); |
| 385 | } |
| 386 | |
| 387 | void Breakpoint::SetQueueName(const char *queue_name) { |
| 388 | if (m_options.GetThreadSpec()->GetQueueName() != nullptr && |
| 389 | ::strcmp(m_options.GetThreadSpec()->GetQueueName(), queue_name) == 0) |
| 390 | return; |
| 391 | |
| 392 | m_options.GetThreadSpec()->SetQueueName(queue_name); |
| 393 | SendBreakpointChangedEvent(eBreakpointEventTypeThreadChanged); |
| 394 | } |
| 395 | |
| 396 | const char *Breakpoint::GetQueueName() const { |
| 397 | if (m_options.GetThreadSpecNoCreate() == nullptr) |
| 398 | return nullptr; |
| 399 | else |
| 400 | return m_options.GetThreadSpecNoCreate()->GetQueueName(); |
| 401 | } |
| 402 | |
| 403 | void Breakpoint::SetCondition(const char *condition) { |
| 404 | m_options.SetCondition(condition); |
| 405 | SendBreakpointChangedEvent(eBreakpointEventTypeConditionChanged); |
| 406 | } |
| 407 | |
| 408 | const char *Breakpoint::GetConditionText() const { |
| 409 | return m_options.GetConditionText(); |
| 410 | } |
| 411 | |
| 412 | // This function is used when "baton" doesn't need to be freed |
| 413 | void Breakpoint::SetCallback(BreakpointHitCallback callback, void *baton, |
| 414 | bool is_synchronous) { |
| 415 | // The default "Baton" class will keep a copy of "baton" and won't free or |
| 416 | // delete it when it goes goes out of scope. |
| 417 | m_options.SetCallback(callback, std::make_shared<UntypedBaton>(baton), |
| 418 | is_synchronous); |
| 419 | |
| 420 | SendBreakpointChangedEvent(eBreakpointEventTypeCommandChanged); |
| 421 | } |
| 422 | |
| 423 | // This function is used when a baton needs to be freed and therefore is |
| 424 | // contained in a "Baton" subclass. |
| 425 | void Breakpoint::SetCallback(BreakpointHitCallback callback, |
| 426 | const BatonSP &callback_baton_sp, |
| 427 | bool is_synchronous) { |
| 428 | m_options.SetCallback(callback, callback_baton_sp, is_synchronous); |
| 429 | } |
| 430 | |
| 431 | void Breakpoint::ClearCallback() { m_options.ClearCallback(); } |
| 432 | |
| 433 | bool Breakpoint::InvokeCallback(StoppointCallbackContext *context, |
| 434 | break_id_t bp_loc_id) { |
| 435 | return m_options.InvokeCallback(context, GetID(), bp_loc_id); |
| 436 | } |
| 437 | |
| 438 | BreakpointOptions &Breakpoint::GetOptions() { return m_options; } |
| 439 | |
| 440 | const BreakpointOptions &Breakpoint::GetOptions() const { return m_options; } |
| 441 | |
| 442 | void Breakpoint::ResolveBreakpoint() { |
| 443 | if (m_resolver_sp) { |
| 444 | ElapsedTime elapsed(m_resolve_time); |
| 445 | m_resolver_sp->ResolveBreakpoint(*m_filter_sp); |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | void Breakpoint::ResolveBreakpointInModules( |
| 450 | ModuleList &module_list, BreakpointLocationCollection &new_locations) { |
| 451 | ElapsedTime elapsed(m_resolve_time); |
| 452 | m_locations.StartRecordingNewLocations(new_locations); |
| 453 | |
| 454 | m_resolver_sp->ResolveBreakpointInModules(*m_filter_sp, module_list); |
| 455 | |
| 456 | m_locations.StopRecordingNewLocations(); |
| 457 | } |
| 458 | |
| 459 | void Breakpoint::ResolveBreakpointInModules(ModuleList &module_list, |
| 460 | bool send_event) { |
| 461 | if (m_resolver_sp) { |
| 462 | // If this is not an internal breakpoint, set up to record the new |
| 463 | // locations, then dispatch an event with the new locations. |
| 464 | if (!IsInternal() && send_event) { |
| 465 | BreakpointEventData *new_locations_event = new BreakpointEventData( |
| 466 | eBreakpointEventTypeLocationsAdded, shared_from_this()); |
| 467 | |
| 468 | ResolveBreakpointInModules( |
| 469 | module_list, new_locations_event->GetBreakpointLocationCollection()); |
| 470 | |
| 471 | if (new_locations_event->GetBreakpointLocationCollection().GetSize() != |
| 472 | 0) { |
| 473 | SendBreakpointChangedEvent(new_locations_event); |
| 474 | } else |
| 475 | delete new_locations_event; |
| 476 | } else { |
| 477 | ElapsedTime elapsed(m_resolve_time); |
| 478 | m_resolver_sp->ResolveBreakpointInModules(*m_filter_sp, module_list); |
| 479 | } |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | void Breakpoint::ClearAllBreakpointSites() { |
| 484 | m_locations.ClearAllBreakpointSites(); |
| 485 | } |
| 486 | |
| 487 | // ModulesChanged: Pass in a list of new modules, and |
| 488 | |
| 489 | void Breakpoint::ModulesChanged(ModuleList &module_list, bool load, |
| 490 | bool delete_locations) { |
| 491 | Log *log = GetLog(LLDBLog::Breakpoints); |
| 492 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Breakpoint::ModulesChanged: num_modules: %zu load: %i " "delete_locations: %i\n", module_list.GetSize(), load, delete_locations ); } while (0) |
| 493 | "Breakpoint::ModulesChanged: num_modules: %zu load: %i "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Breakpoint::ModulesChanged: num_modules: %zu load: %i " "delete_locations: %i\n", module_list.GetSize(), load, delete_locations ); } while (0) |
| 494 | "delete_locations: %i\n",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Breakpoint::ModulesChanged: num_modules: %zu load: %i " "delete_locations: %i\n", module_list.GetSize(), load, delete_locations ); } while (0) |
| 495 | module_list.GetSize(), load, delete_locations)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Breakpoint::ModulesChanged: num_modules: %zu load: %i " "delete_locations: %i\n", module_list.GetSize(), load, delete_locations ); } while (0); |
| 496 | |
| 497 | if (load) { |
| 498 | // The logic for handling new modules is: |
| 499 | // 1) If the filter rejects this module, then skip it. 2) Run through the |
| 500 | // current location list and if there are any locations |
| 501 | // for that module, we mark the module as "seen" and we don't try to |
| 502 | // re-resolve |
| 503 | // breakpoint locations for that module. |
| 504 | // However, we do add breakpoint sites to these locations if needed. |
| 505 | // 3) If we don't see this module in our breakpoint location list, call |
| 506 | // ResolveInModules. |
| 507 | |
| 508 | ModuleList new_modules; // We'll stuff the "unseen" modules in this list, |
| 509 | // and then resolve |
| 510 | // them after the locations pass. Have to do it this way because resolving |
| 511 | // breakpoints will add new locations potentially. |
| 512 | |
| 513 | for (ModuleSP module_sp : module_list.Modules()) { |
| 514 | bool seen = false; |
| 515 | if (!m_filter_sp->ModulePasses(module_sp)) |
| 516 | continue; |
| 517 | |
| 518 | BreakpointLocationCollection locations_with_no_section; |
| 519 | for (BreakpointLocationSP break_loc_sp : |
| 520 | m_locations.BreakpointLocations()) { |
| 521 | |
| 522 | // If the section for this location was deleted, that means it's Module |
| 523 | // has gone away but somebody forgot to tell us. Let's clean it up |
| 524 | // here. |
| 525 | Address section_addr(break_loc_sp->GetAddress()); |
| 526 | if (section_addr.SectionWasDeleted()) { |
| 527 | locations_with_no_section.Add(break_loc_sp); |
| 528 | continue; |
| 529 | } |
| 530 | |
| 531 | if (!break_loc_sp->IsEnabled()) |
| 532 | continue; |
| 533 | |
| 534 | SectionSP section_sp(section_addr.GetSection()); |
| 535 | |
| 536 | // If we don't have a Section, that means this location is a raw |
| 537 | // address that we haven't resolved to a section yet. So we'll have to |
| 538 | // look in all the new modules to resolve this location. Otherwise, if |
| 539 | // it was set in this module, re-resolve it here. |
| 540 | if (section_sp && section_sp->GetModule() == module_sp) { |
| 541 | if (!seen) |
| 542 | seen = true; |
| 543 | |
| 544 | if (!break_loc_sp->ResolveBreakpointSite()) { |
| 545 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Warning: could not set breakpoint site for " "breakpoint location %d of breakpoint %d.\n", break_loc_sp-> GetID(), GetID()); } while (0) |
| 546 | "Warning: could not set breakpoint site for "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Warning: could not set breakpoint site for " "breakpoint location %d of breakpoint %d.\n", break_loc_sp-> GetID(), GetID()); } while (0) |
| 547 | "breakpoint location %d of breakpoint %d.\n",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Warning: could not set breakpoint site for " "breakpoint location %d of breakpoint %d.\n", break_loc_sp-> GetID(), GetID()); } while (0) |
| 548 | break_loc_sp->GetID(), GetID())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Warning: could not set breakpoint site for " "breakpoint location %d of breakpoint %d.\n", break_loc_sp-> GetID(), GetID()); } while (0); |
| 549 | } |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | size_t num_to_delete = locations_with_no_section.GetSize(); |
| 554 | |
| 555 | for (size_t i = 0; i < num_to_delete; i++) |
| 556 | m_locations.RemoveLocation(locations_with_no_section.GetByIndex(i)); |
| 557 | |
| 558 | if (!seen) |
| 559 | new_modules.AppendIfNeeded(module_sp); |
| 560 | } |
| 561 | |
| 562 | if (new_modules.GetSize() > 0) { |
| 563 | ResolveBreakpointInModules(new_modules); |
| 564 | } |
| 565 | } else { |
| 566 | // Go through the currently set locations and if any have breakpoints in |
| 567 | // the module list, then remove their breakpoint sites, and their locations |
| 568 | // if asked to. |
| 569 | |
| 570 | BreakpointEventData *removed_locations_event; |
| 571 | if (!IsInternal()) |
| 572 | removed_locations_event = new BreakpointEventData( |
| 573 | eBreakpointEventTypeLocationsRemoved, shared_from_this()); |
| 574 | else |
| 575 | removed_locations_event = nullptr; |
| 576 | |
| 577 | for (ModuleSP module_sp : module_list.Modules()) { |
| 578 | if (m_filter_sp->ModulePasses(module_sp)) { |
| 579 | size_t loc_idx = 0; |
| 580 | size_t num_locations = m_locations.GetSize(); |
| 581 | BreakpointLocationCollection locations_to_remove; |
| 582 | for (loc_idx = 0; loc_idx < num_locations; loc_idx++) { |
| 583 | BreakpointLocationSP break_loc_sp(m_locations.GetByIndex(loc_idx)); |
| 584 | SectionSP section_sp(break_loc_sp->GetAddress().GetSection()); |
| 585 | if (section_sp && section_sp->GetModule() == module_sp) { |
| 586 | // Remove this breakpoint since the shared library is unloaded, but |
| 587 | // keep the breakpoint location around so we always get complete |
| 588 | // hit count and breakpoint lifetime info |
| 589 | break_loc_sp->ClearBreakpointSite(); |
| 590 | if (removed_locations_event) { |
| 591 | removed_locations_event->GetBreakpointLocationCollection().Add( |
| 592 | break_loc_sp); |
| 593 | } |
| 594 | if (delete_locations) |
| 595 | locations_to_remove.Add(break_loc_sp); |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | if (delete_locations) { |
| 600 | size_t num_locations_to_remove = locations_to_remove.GetSize(); |
| 601 | for (loc_idx = 0; loc_idx < num_locations_to_remove; loc_idx++) |
| 602 | m_locations.RemoveLocation(locations_to_remove.GetByIndex(loc_idx)); |
| 603 | } |
| 604 | } |
| 605 | } |
| 606 | SendBreakpointChangedEvent(removed_locations_event); |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | static bool SymbolContextsMightBeEquivalent(SymbolContext &old_sc, |
| 611 | SymbolContext &new_sc) { |
| 612 | bool equivalent_scs = false; |
| 613 | |
| 614 | if (old_sc.module_sp.get() == new_sc.module_sp.get()) { |
| 615 | // If these come from the same module, we can directly compare the |
| 616 | // pointers: |
| 617 | if (old_sc.comp_unit && new_sc.comp_unit && |
| 618 | (old_sc.comp_unit == new_sc.comp_unit)) { |
| 619 | if (old_sc.function && new_sc.function && |
| 620 | (old_sc.function == new_sc.function)) { |
| 621 | equivalent_scs = true; |
| 622 | } |
| 623 | } else if (old_sc.symbol && new_sc.symbol && |
| 624 | (old_sc.symbol == new_sc.symbol)) { |
| 625 | equivalent_scs = true; |
| 626 | } |
| 627 | } else { |
| 628 | // Otherwise we will compare by name... |
| 629 | if (old_sc.comp_unit && new_sc.comp_unit) { |
| 630 | if (old_sc.comp_unit->GetPrimaryFile() == |
| 631 | new_sc.comp_unit->GetPrimaryFile()) { |
| 632 | // Now check the functions: |
| 633 | if (old_sc.function && new_sc.function && |
| 634 | (old_sc.function->GetName() == new_sc.function->GetName())) { |
| 635 | equivalent_scs = true; |
| 636 | } |
| 637 | } |
| 638 | } else if (old_sc.symbol && new_sc.symbol) { |
| 639 | if (Mangled::Compare(old_sc.symbol->GetMangled(), |
| 640 | new_sc.symbol->GetMangled()) == 0) { |
| 641 | equivalent_scs = true; |
| 642 | } |
| 643 | } |
| 644 | } |
| 645 | return equivalent_scs; |
| 646 | } |
| 647 | |
| 648 | void Breakpoint::ModuleReplaced(ModuleSP old_module_sp, |
| 649 | ModuleSP new_module_sp) { |
| 650 | Log *log = GetLog(LLDBLog::Breakpoints); |
| 651 | LLDB_LOGF(log, "Breakpoint::ModulesReplaced for %s\n",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Breakpoint::ModulesReplaced for %s\n" , old_module_sp->GetSpecificationDescription().c_str()); } while (0) |
| 652 | old_module_sp->GetSpecificationDescription().c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Breakpoint::ModulesReplaced for %s\n" , old_module_sp->GetSpecificationDescription().c_str()); } while (0); |
| 653 | // First find all the locations that are in the old module |
| 654 | |
| 655 | BreakpointLocationCollection old_break_locs; |
| 656 | for (BreakpointLocationSP break_loc_sp : m_locations.BreakpointLocations()) { |
| 657 | SectionSP section_sp = break_loc_sp->GetAddress().GetSection(); |
| 658 | if (section_sp && section_sp->GetModule() == old_module_sp) { |
| 659 | old_break_locs.Add(break_loc_sp); |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | size_t num_old_locations = old_break_locs.GetSize(); |
| 664 | |
| 665 | if (num_old_locations == 0) { |
| 666 | // There were no locations in the old module, so we just need to check if |
| 667 | // there were any in the new module. |
| 668 | ModuleList temp_list; |
| 669 | temp_list.Append(new_module_sp); |
| 670 | ResolveBreakpointInModules(temp_list); |
| 671 | } else { |
| 672 | // First search the new module for locations. Then compare this with the |
| 673 | // old list, copy over locations that "look the same" Then delete the old |
| 674 | // locations. Finally remember to post the creation event. |
| 675 | // |
| 676 | // Two locations are the same if they have the same comp unit & function |
| 677 | // (by name) and there are the same number of locations in the old function |
| 678 | // as in the new one. |
| 679 | |
| 680 | ModuleList temp_list; |
| 681 | temp_list.Append(new_module_sp); |
| 682 | BreakpointLocationCollection new_break_locs; |
| 683 | ResolveBreakpointInModules(temp_list, new_break_locs); |
| 684 | BreakpointLocationCollection locations_to_remove; |
| 685 | BreakpointLocationCollection locations_to_announce; |
| 686 | |
| 687 | size_t num_new_locations = new_break_locs.GetSize(); |
| 688 | |
| 689 | if (num_new_locations > 0) { |
| 690 | // Break out the case of one location -> one location since that's the |
| 691 | // most common one, and there's no need to build up the structures needed |
| 692 | // for the merge in that case. |
| 693 | if (num_new_locations == 1 && num_old_locations == 1) { |
| 694 | bool equivalent_locations = false; |
| 695 | SymbolContext old_sc, new_sc; |
| 696 | // The only way the old and new location can be equivalent is if they |
| 697 | // have the same amount of information: |
| 698 | BreakpointLocationSP old_loc_sp = old_break_locs.GetByIndex(0); |
| 699 | BreakpointLocationSP new_loc_sp = new_break_locs.GetByIndex(0); |
| 700 | |
| 701 | if (old_loc_sp->GetAddress().CalculateSymbolContext(&old_sc) == |
| 702 | new_loc_sp->GetAddress().CalculateSymbolContext(&new_sc)) { |
| 703 | equivalent_locations = |
| 704 | SymbolContextsMightBeEquivalent(old_sc, new_sc); |
| 705 | } |
| 706 | |
| 707 | if (equivalent_locations) { |
| 708 | m_locations.SwapLocation(old_loc_sp, new_loc_sp); |
| 709 | } else { |
| 710 | locations_to_remove.Add(old_loc_sp); |
| 711 | locations_to_announce.Add(new_loc_sp); |
| 712 | } |
| 713 | } else { |
| 714 | // We don't want to have to keep computing the SymbolContexts for these |
| 715 | // addresses over and over, so lets get them up front: |
| 716 | |
| 717 | typedef std::map<lldb::break_id_t, SymbolContext> IDToSCMap; |
| 718 | IDToSCMap old_sc_map; |
| 719 | for (size_t idx = 0; idx < num_old_locations; idx++) { |
| 720 | SymbolContext sc; |
| 721 | BreakpointLocationSP bp_loc_sp = old_break_locs.GetByIndex(idx); |
| 722 | lldb::break_id_t loc_id = bp_loc_sp->GetID(); |
| 723 | bp_loc_sp->GetAddress().CalculateSymbolContext(&old_sc_map[loc_id]); |
| 724 | } |
| 725 | |
| 726 | std::map<lldb::break_id_t, SymbolContext> new_sc_map; |
| 727 | for (size_t idx = 0; idx < num_new_locations; idx++) { |
| 728 | SymbolContext sc; |
| 729 | BreakpointLocationSP bp_loc_sp = new_break_locs.GetByIndex(idx); |
| 730 | lldb::break_id_t loc_id = bp_loc_sp->GetID(); |
| 731 | bp_loc_sp->GetAddress().CalculateSymbolContext(&new_sc_map[loc_id]); |
| 732 | } |
| 733 | // Take an element from the old Symbol Contexts |
| 734 | while (old_sc_map.size() > 0) { |
| 735 | lldb::break_id_t old_id = old_sc_map.begin()->first; |
| 736 | SymbolContext &old_sc = old_sc_map.begin()->second; |
| 737 | |
| 738 | // Count the number of entries equivalent to this SC for the old |
| 739 | // list: |
| 740 | std::vector<lldb::break_id_t> old_id_vec; |
| 741 | old_id_vec.push_back(old_id); |
| 742 | |
| 743 | IDToSCMap::iterator tmp_iter; |
| 744 | for (tmp_iter = ++old_sc_map.begin(); tmp_iter != old_sc_map.end(); |
| 745 | tmp_iter++) { |
| 746 | if (SymbolContextsMightBeEquivalent(old_sc, tmp_iter->second)) |
| 747 | old_id_vec.push_back(tmp_iter->first); |
| 748 | } |
| 749 | |
| 750 | // Now find all the equivalent locations in the new list. |
| 751 | std::vector<lldb::break_id_t> new_id_vec; |
| 752 | for (tmp_iter = new_sc_map.begin(); tmp_iter != new_sc_map.end(); |
| 753 | tmp_iter++) { |
| 754 | if (SymbolContextsMightBeEquivalent(old_sc, tmp_iter->second)) |
| 755 | new_id_vec.push_back(tmp_iter->first); |
| 756 | } |
| 757 | |
| 758 | // Alright, if we have the same number of potentially equivalent |
| 759 | // locations in the old and new modules, we'll just map them one to |
| 760 | // one in ascending ID order (assuming the resolver's order would |
| 761 | // match the equivalent ones. Otherwise, we'll dump all the old ones, |
| 762 | // and just take the new ones, erasing the elements from both maps as |
| 763 | // we go. |
| 764 | |
| 765 | if (old_id_vec.size() == new_id_vec.size()) { |
| 766 | llvm::sort(old_id_vec); |
| 767 | llvm::sort(new_id_vec); |
| 768 | size_t num_elements = old_id_vec.size(); |
| 769 | for (size_t idx = 0; idx < num_elements; idx++) { |
| 770 | BreakpointLocationSP old_loc_sp = |
| 771 | old_break_locs.FindByIDPair(GetID(), old_id_vec[idx]); |
| 772 | BreakpointLocationSP new_loc_sp = |
| 773 | new_break_locs.FindByIDPair(GetID(), new_id_vec[idx]); |
| 774 | m_locations.SwapLocation(old_loc_sp, new_loc_sp); |
| 775 | old_sc_map.erase(old_id_vec[idx]); |
| 776 | new_sc_map.erase(new_id_vec[idx]); |
| 777 | } |
| 778 | } else { |
| 779 | for (lldb::break_id_t old_id : old_id_vec) { |
| 780 | locations_to_remove.Add( |
| 781 | old_break_locs.FindByIDPair(GetID(), old_id)); |
| 782 | old_sc_map.erase(old_id); |
| 783 | } |
| 784 | for (lldb::break_id_t new_id : new_id_vec) { |
| 785 | locations_to_announce.Add( |
| 786 | new_break_locs.FindByIDPair(GetID(), new_id)); |
| 787 | new_sc_map.erase(new_id); |
| 788 | } |
| 789 | } |
| 790 | } |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | // Now remove the remaining old locations, and cons up a removed locations |
| 795 | // event. Note, we don't put the new locations that were swapped with an |
| 796 | // old location on the locations_to_remove list, so we don't need to worry |
| 797 | // about telling the world about removing a location we didn't tell them |
| 798 | // about adding. |
| 799 | |
| 800 | BreakpointEventData *locations_event; |
| 801 | if (!IsInternal()) |
| 802 | locations_event = new BreakpointEventData( |
| 803 | eBreakpointEventTypeLocationsRemoved, shared_from_this()); |
| 804 | else |
| 805 | locations_event = nullptr; |
| 806 | |
| 807 | for (BreakpointLocationSP loc_sp : |
| 808 | locations_to_remove.BreakpointLocations()) { |
| 809 | m_locations.RemoveLocation(loc_sp); |
| 810 | if (locations_event) |
| 811 | locations_event->GetBreakpointLocationCollection().Add(loc_sp); |
| 812 | } |
| 813 | SendBreakpointChangedEvent(locations_event); |
| 814 | |
| 815 | // And announce the new ones. |
| 816 | |
| 817 | if (!IsInternal()) { |
| 818 | locations_event = new BreakpointEventData( |
| 819 | eBreakpointEventTypeLocationsAdded, shared_from_this()); |
| 820 | for (BreakpointLocationSP loc_sp : |
| 821 | locations_to_announce.BreakpointLocations()) |
| 822 | locations_event->GetBreakpointLocationCollection().Add(loc_sp); |
| 823 | |
| 824 | SendBreakpointChangedEvent(locations_event); |
| 825 | } |
| 826 | m_locations.Compact(); |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | void Breakpoint::Dump(Stream *) {} |
| 831 | |
| 832 | size_t Breakpoint::GetNumResolvedLocations() const { |
| 833 | // Return the number of breakpoints that are actually resolved and set down |
| 834 | // in the inferior process. |
| 835 | return m_locations.GetNumResolvedLocations(); |
| 836 | } |
| 837 | |
| 838 | bool Breakpoint::HasResolvedLocations() const { |
| 839 | return GetNumResolvedLocations() > 0; |
| 840 | } |
| 841 | |
| 842 | size_t Breakpoint::GetNumLocations() const { return m_locations.GetSize(); } |
| 843 | |
| 844 | bool Breakpoint::AddName(llvm::StringRef new_name) { |
| 845 | m_name_list.insert(new_name.str().c_str()); |
| 846 | return true; |
| 847 | } |
| 848 | |
| 849 | void Breakpoint::GetDescription(Stream *s, lldb::DescriptionLevel level, |
| 850 | bool show_locations) { |
| 851 | assert(s != nullptr)(static_cast <bool> (s != nullptr) ? void (0) : __assert_fail ("s != nullptr", "lldb/source/Breakpoint/Breakpoint.cpp", 851 , __extension__ __PRETTY_FUNCTION__)); |
| 852 | |
| 853 | if (!m_kind_description.empty()) { |
| 854 | if (level == eDescriptionLevelBrief) { |
| 855 | s->PutCString(GetBreakpointKind()); |
| 856 | return; |
| 857 | } else |
| 858 | s->Printf("Kind: %s\n", GetBreakpointKind()); |
| 859 | } |
| 860 | |
| 861 | const size_t num_locations = GetNumLocations(); |
| 862 | const size_t num_resolved_locations = GetNumResolvedLocations(); |
| 863 | |
| 864 | // They just made the breakpoint, they don't need to be told HOW they made |
| 865 | // it... Also, we'll print the breakpoint number differently depending on |
| 866 | // whether there is 1 or more locations. |
| 867 | if (level != eDescriptionLevelInitial) { |
| 868 | s->Printf("%i: ", GetID()); |
| 869 | GetResolverDescription(s); |
| 870 | GetFilterDescription(s); |
| 871 | } |
| 872 | |
| 873 | switch (level) { |
| 874 | case lldb::eDescriptionLevelBrief: |
| 875 | case lldb::eDescriptionLevelFull: |
| 876 | if (num_locations > 0) { |
| 877 | s->Printf(", locations = %" PRIu64"l" "u", (uint64_t)num_locations); |
| 878 | if (num_resolved_locations > 0) |
| 879 | s->Printf(", resolved = %" PRIu64"l" "u" ", hit count = %d", |
| 880 | (uint64_t)num_resolved_locations, GetHitCount()); |
| 881 | } else { |
| 882 | // Don't print the pending notification for exception resolvers since we |
| 883 | // don't generally know how to set them until the target is run. |
| 884 | if (m_resolver_sp->getResolverID() != |
| 885 | BreakpointResolver::ExceptionResolver) |
| 886 | s->Printf(", locations = 0 (pending)"); |
| 887 | } |
| 888 | |
| 889 | m_options.GetDescription(s, level); |
| 890 | |
| 891 | if (m_precondition_sp) |
| 892 | m_precondition_sp->GetDescription(*s, level); |
| 893 | |
| 894 | if (level == lldb::eDescriptionLevelFull) { |
| 895 | if (!m_name_list.empty()) { |
| 896 | s->EOL(); |
| 897 | s->Indent(); |
| 898 | s->Printf("Names:"); |
| 899 | s->EOL(); |
| 900 | s->IndentMore(); |
| 901 | for (std::string name : m_name_list) { |
| 902 | s->Indent(); |
| 903 | s->Printf("%s\n", name.c_str()); |
| 904 | } |
| 905 | s->IndentLess(); |
| 906 | } |
| 907 | s->IndentLess(); |
| 908 | s->EOL(); |
| 909 | } |
| 910 | break; |
| 911 | |
| 912 | case lldb::eDescriptionLevelInitial: |
| 913 | s->Printf("Breakpoint %i: ", GetID()); |
| 914 | if (num_locations == 0) { |
| 915 | s->Printf("no locations (pending)."); |
| 916 | } else if (num_locations == 1 && !show_locations) { |
| 917 | // There is only one location, so we'll just print that location |
| 918 | // information. |
| 919 | GetLocationAtIndex(0)->GetDescription(s, level); |
| 920 | } else { |
| 921 | s->Printf("%" PRIu64"l" "u" " locations.", static_cast<uint64_t>(num_locations)); |
| 922 | } |
| 923 | s->EOL(); |
| 924 | break; |
| 925 | |
| 926 | case lldb::eDescriptionLevelVerbose: |
| 927 | // Verbose mode does a debug dump of the breakpoint |
| 928 | Dump(s); |
| 929 | s->EOL(); |
| 930 | // s->Indent(); |
| 931 | m_options.GetDescription(s, level); |
| 932 | break; |
| 933 | |
| 934 | default: |
| 935 | break; |
| 936 | } |
| 937 | |
| 938 | // The brief description is just the location name (1.2 or whatever). That's |
| 939 | // pointless to show in the breakpoint's description, so suppress it. |
| 940 | if (show_locations && level != lldb::eDescriptionLevelBrief) { |
| 941 | s->IndentMore(); |
| 942 | for (size_t i = 0; i < num_locations; ++i) { |
| 943 | BreakpointLocation *loc = GetLocationAtIndex(i).get(); |
| 944 | loc->GetDescription(s, level); |
| 945 | s->EOL(); |
| 946 | } |
| 947 | s->IndentLess(); |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | void Breakpoint::GetResolverDescription(Stream *s) { |
| 952 | if (m_resolver_sp) |
| 953 | m_resolver_sp->GetDescription(s); |
| 954 | } |
| 955 | |
| 956 | bool Breakpoint::GetMatchingFileLine(ConstString filename, |
| 957 | uint32_t line_number, |
| 958 | BreakpointLocationCollection &loc_coll) { |
| 959 | // TODO: To be correct, this method needs to fill the breakpoint location |
| 960 | // collection |
| 961 | // with the location IDs which match the filename and line_number. |
| 962 | // |
| 963 | |
| 964 | if (m_resolver_sp) { |
| 965 | BreakpointResolverFileLine *resolverFileLine = |
| 966 | dyn_cast<BreakpointResolverFileLine>(m_resolver_sp.get()); |
| 967 | |
| 968 | // TODO: Handle SourceLocationSpec column information |
| 969 | if (resolverFileLine && |
| 970 | resolverFileLine->m_location_spec.GetFileSpec().GetFilename() == |
| 971 | filename && |
| 972 | resolverFileLine->m_location_spec.GetLine() == line_number) { |
| 973 | return true; |
| 974 | } |
| 975 | } |
| 976 | return false; |
| 977 | } |
| 978 | |
| 979 | void Breakpoint::GetFilterDescription(Stream *s) { |
| 980 | m_filter_sp->GetDescription(s); |
| 981 | } |
| 982 | |
| 983 | bool Breakpoint::EvaluatePrecondition(StoppointCallbackContext &context) { |
| 984 | if (!m_precondition_sp) |
| 985 | return true; |
| 986 | |
| 987 | return m_precondition_sp->EvaluatePrecondition(context); |
| 988 | } |
| 989 | |
| 990 | void Breakpoint::SendBreakpointChangedEvent( |
| 991 | lldb::BreakpointEventType eventKind) { |
| 992 | if (!m_being_created && !IsInternal() && |
| 993 | GetTarget().EventTypeHasListeners( |
| 994 | Target::eBroadcastBitBreakpointChanged)) { |
| 995 | BreakpointEventData *data = |
| 996 | new Breakpoint::BreakpointEventData(eventKind, shared_from_this()); |
| 997 | |
| 998 | GetTarget().BroadcastEvent(Target::eBroadcastBitBreakpointChanged, data); |
| 999 | } |
| 1000 | } |
| 1001 | |
| 1002 | void Breakpoint::SendBreakpointChangedEvent(BreakpointEventData *data) { |
| 1003 | if (data == nullptr) |
| 1004 | return; |
| 1005 | |
| 1006 | if (!m_being_created && !IsInternal() && |
| 1007 | GetTarget().EventTypeHasListeners(Target::eBroadcastBitBreakpointChanged)) |
| 1008 | GetTarget().BroadcastEvent(Target::eBroadcastBitBreakpointChanged, data); |
| 1009 | else |
| 1010 | delete data; |
| 1011 | } |
| 1012 | |
| 1013 | const char *Breakpoint::BreakpointEventTypeAsCString(BreakpointEventType type) { |
| 1014 | switch (type) { |
| 1015 | case eBreakpointEventTypeInvalidType: return "invalid"; |
| 1016 | case eBreakpointEventTypeAdded: return "breakpoint added"; |
| 1017 | case eBreakpointEventTypeRemoved: return "breakpoint removed"; |
| 1018 | case eBreakpointEventTypeLocationsAdded: return "locations added"; |
| 1019 | case eBreakpointEventTypeLocationsRemoved: return "locations removed"; |
| 1020 | case eBreakpointEventTypeLocationsResolved: return "locations resolved"; |
| 1021 | case eBreakpointEventTypeEnabled: return "breakpoint enabled"; |
| 1022 | case eBreakpointEventTypeDisabled: return "breakpoint disabled"; |
| 1023 | case eBreakpointEventTypeCommandChanged: return "command changed"; |
| 1024 | case eBreakpointEventTypeConditionChanged: return "condition changed"; |
| 1025 | case eBreakpointEventTypeIgnoreChanged: return "ignore count changed"; |
| 1026 | case eBreakpointEventTypeThreadChanged: return "thread changed"; |
| 1027 | case eBreakpointEventTypeAutoContinueChanged: return "autocontinue changed"; |
| 1028 | }; |
| 1029 | llvm_unreachable("Fully covered switch above!")::llvm::llvm_unreachable_internal("Fully covered switch above!" , "lldb/source/Breakpoint/Breakpoint.cpp", 1029); |
| 1030 | } |
| 1031 | |
| 1032 | Log *Breakpoint::BreakpointEventData::GetLogChannel() { |
| 1033 | return GetLog(LLDBLog::Breakpoints); |
| 1034 | } |
| 1035 | |
| 1036 | Breakpoint::BreakpointEventData::BreakpointEventData( |
| 1037 | BreakpointEventType sub_type, const BreakpointSP &new_breakpoint_sp) |
| 1038 | : m_breakpoint_event(sub_type), m_new_breakpoint_sp(new_breakpoint_sp) {} |
| 1039 | |
| 1040 | Breakpoint::BreakpointEventData::~BreakpointEventData() = default; |
| 1041 | |
| 1042 | ConstString Breakpoint::BreakpointEventData::GetFlavorString() { |
| 1043 | static ConstString g_flavor("Breakpoint::BreakpointEventData"); |
| 1044 | return g_flavor; |
| 1045 | } |
| 1046 | |
| 1047 | ConstString Breakpoint::BreakpointEventData::GetFlavor() const { |
| 1048 | return BreakpointEventData::GetFlavorString(); |
| 1049 | } |
| 1050 | |
| 1051 | BreakpointSP Breakpoint::BreakpointEventData::GetBreakpoint() const { |
| 1052 | return m_new_breakpoint_sp; |
| 1053 | } |
| 1054 | |
| 1055 | BreakpointEventType |
| 1056 | Breakpoint::BreakpointEventData::GetBreakpointEventType() const { |
| 1057 | return m_breakpoint_event; |
| 1058 | } |
| 1059 | |
| 1060 | void Breakpoint::BreakpointEventData::Dump(Stream *s) const { |
| 1061 | if (!s) |
| 1062 | return; |
| 1063 | BreakpointEventType event_type = GetBreakpointEventType(); |
| 1064 | break_id_t bkpt_id = GetBreakpoint()->GetID(); |
| 1065 | s->Format("bkpt: {0} type: {1}", bkpt_id, |
| 1066 | BreakpointEventTypeAsCString(event_type)); |
| 1067 | } |
| 1068 | |
| 1069 | const Breakpoint::BreakpointEventData * |
| 1070 | Breakpoint::BreakpointEventData::GetEventDataFromEvent(const Event *event) { |
| 1071 | if (event) { |
| 1072 | const EventData *event_data = event->GetData(); |
| 1073 | if (event_data && |
| 1074 | event_data->GetFlavor() == BreakpointEventData::GetFlavorString()) |
| 1075 | return static_cast<const BreakpointEventData *>(event->GetData()); |
| 1076 | } |
| 1077 | return nullptr; |
| 1078 | } |
| 1079 | |
| 1080 | BreakpointEventType |
| 1081 | Breakpoint::BreakpointEventData::GetBreakpointEventTypeFromEvent( |
| 1082 | const EventSP &event_sp) { |
| 1083 | const BreakpointEventData *data = GetEventDataFromEvent(event_sp.get()); |
| 1084 | |
| 1085 | if (data == nullptr) |
| 1086 | return eBreakpointEventTypeInvalidType; |
| 1087 | else |
| 1088 | return data->GetBreakpointEventType(); |
| 1089 | } |
| 1090 | |
| 1091 | BreakpointSP Breakpoint::BreakpointEventData::GetBreakpointFromEvent( |
| 1092 | const EventSP &event_sp) { |
| 1093 | BreakpointSP bp_sp; |
| 1094 | |
| 1095 | const BreakpointEventData *data = GetEventDataFromEvent(event_sp.get()); |
| 1096 | if (data) |
| 1097 | bp_sp = data->m_new_breakpoint_sp; |
| 1098 | |
| 1099 | return bp_sp; |
| 1100 | } |
| 1101 | |
| 1102 | size_t Breakpoint::BreakpointEventData::GetNumBreakpointLocationsFromEvent( |
| 1103 | const EventSP &event_sp) { |
| 1104 | const BreakpointEventData *data = GetEventDataFromEvent(event_sp.get()); |
| 1105 | if (data) |
| 1106 | return data->m_locations.GetSize(); |
| 1107 | |
| 1108 | return 0; |
| 1109 | } |
| 1110 | |
| 1111 | lldb::BreakpointLocationSP |
| 1112 | Breakpoint::BreakpointEventData::GetBreakpointLocationAtIndexFromEvent( |
| 1113 | const lldb::EventSP &event_sp, uint32_t bp_loc_idx) { |
| 1114 | lldb::BreakpointLocationSP bp_loc_sp; |
| 1115 | |
| 1116 | const BreakpointEventData *data = GetEventDataFromEvent(event_sp.get()); |
| 1117 | if (data) { |
| 1118 | bp_loc_sp = data->m_locations.GetByIndex(bp_loc_idx); |
| 1119 | } |
| 1120 | |
| 1121 | return bp_loc_sp; |
| 1122 | } |
| 1123 | |
| 1124 | json::Value Breakpoint::GetStatistics() { |
| 1125 | json::Object bp; |
| 1126 | bp.try_emplace("id", GetID()); |
| 1127 | bp.try_emplace("resolveTime", m_resolve_time.get().count()); |
| 1128 | bp.try_emplace("numLocations", (int64_t)GetNumLocations()); |
| 1129 | bp.try_emplace("numResolvedLocations", (int64_t)GetNumResolvedLocations()); |
| 1130 | bp.try_emplace("internal", IsInternal()); |
| 1131 | if (!m_kind_description.empty()) |
| 1132 | bp.try_emplace("kindDescription", m_kind_description); |
| 1133 | // Put the full structured data for reproducing this breakpoint in a key/value |
| 1134 | // pair named "details". This allows the breakpoint's details to be visible |
| 1135 | // in the stats in case we need to reproduce a breakpoint that has long |
| 1136 | // resolve times |
| 1137 | StructuredData::ObjectSP bp_data_sp = SerializeToStructuredData(); |
| 1138 | if (bp_data_sp) { |
| 1139 | std::string buffer; |
| 1140 | llvm::raw_string_ostream ss(buffer); |
| 1141 | json::OStream json_os(ss); |
| 1142 | bp_data_sp->Serialize(json_os); |
| 1143 | if (auto expected_value = llvm::json::parse(ss.str())) { |
| 1144 | bp.try_emplace("details", std::move(*expected_value)); |
| 1145 | } else { |
| 1146 | std::string details_error = toString(expected_value.takeError()); |
| 1147 | json::Object details; |
| 1148 | details.try_emplace("error", details_error); |
| 1149 | bp.try_emplace("details", std::move(details)); |
| 1150 | } |
| 1151 | } |
| 1152 | return json::Value(std::move(bp)); |
| 1153 | } |