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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
| (...skipping 13 matching lines...) Expand all Loading... |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | 27 |
| 28 #ifndef V8_LOG_H_ | 28 #ifndef V8_LOG_H_ |
| 29 #define V8_LOG_H_ | 29 #define V8_LOG_H_ |
| 30 | 30 |
| 31 #include "allocation.h" | 31 #include "allocation.h" |
| 32 #include "objects.h" | 32 #include "objects.h" |
| 33 #include "platform.h" | 33 #include "platform.h" |
| 34 #include "log-utils.h" | |
| 35 | 34 |
| 36 namespace v8 { | 35 namespace v8 { |
| 37 namespace internal { | 36 namespace internal { |
| 38 | 37 |
| 39 // Logger is used for collecting logging information from V8 during | 38 // Logger is used for collecting logging information from V8 during |
| 40 // execution. The result is dumped to a file. | 39 // execution. The result is dumped to a file. |
| 41 // | 40 // |
| 42 // Available command line flags: | 41 // Available command line flags: |
| 43 // | 42 // |
| 44 // --log | 43 // --log |
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| 64 // --log-regexp implies --log. | 63 // --log-regexp implies --log. |
| 65 // | 64 // |
| 66 // --logfile <filename> | 65 // --logfile <filename> |
| 67 // Specify the name of the logfile, default is "v8.log". | 66 // Specify the name of the logfile, default is "v8.log". |
| 68 // | 67 // |
| 69 // --prof | 68 // --prof |
| 70 // Collect statistical profiling information (ticks), default is off. The | 69 // Collect statistical profiling information (ticks), default is off. The |
| 71 // tick profiler requires code events, so --prof implies --log-code. | 70 // tick profiler requires code events, so --prof implies --log-code. |
| 72 | 71 |
| 73 // Forward declarations. | 72 // Forward declarations. |
| 74 class LogMessageBuilder; | 73 class CodeAddressMap; |
| 74 class CompilationInfo; |
| 75 class CpuProfiler; |
| 76 class Isolate; |
| 77 class Log; |
| 78 class PositionsRecorder; |
| 75 class Profiler; | 79 class Profiler; |
| 76 class Semaphore; | 80 class Semaphore; |
| 81 class Ticker; |
| 77 struct TickSample; | 82 struct TickSample; |
| 78 class Ticker; | |
| 79 class Isolate; | |
| 80 class PositionsRecorder; | |
| 81 class CpuProfiler; | |
| 82 class CompilationInfo; | |
| 83 | 83 |
| 84 #undef LOG | 84 #undef LOG |
| 85 #define LOG(isolate, Call) \ | 85 #define LOG(isolate, Call) \ |
| 86 do { \ | 86 do { \ |
| 87 v8::internal::Logger* logger = \ | 87 v8::internal::Logger* logger = \ |
| 88 (isolate)->logger(); \ | 88 (isolate)->logger(); \ |
| 89 if (logger->is_logging()) \ | 89 if (logger->is_logging()) \ |
| 90 logger->Call; \ | 90 logger->Call; \ |
| 91 } while (false) | 91 } while (false) |
| 92 | 92 |
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| 144 V(STORE_IC_TAG, "StoreIC") \ | 144 V(STORE_IC_TAG, "StoreIC") \ |
| 145 V(STORE_POLYMORPHIC_IC_TAG, "StorePolymorphicIC") \ | 145 V(STORE_POLYMORPHIC_IC_TAG, "StorePolymorphicIC") \ |
| 146 V(STUB_TAG, "Stub") \ | 146 V(STUB_TAG, "Stub") \ |
| 147 V(NATIVE_FUNCTION_TAG, "Function") \ | 147 V(NATIVE_FUNCTION_TAG, "Function") \ |
| 148 V(NATIVE_LAZY_COMPILE_TAG, "LazyCompile") \ | 148 V(NATIVE_LAZY_COMPILE_TAG, "LazyCompile") \ |
| 149 V(NATIVE_SCRIPT_TAG, "Script") | 149 V(NATIVE_SCRIPT_TAG, "Script") |
| 150 // Note that 'NATIVE_' cases for functions and scripts are mapped onto | 150 // Note that 'NATIVE_' cases for functions and scripts are mapped onto |
| 151 // original tags when writing to the log. | 151 // original tags when writing to the log. |
| 152 | 152 |
| 153 | 153 |
| 154 class JitLogger; |
| 154 class LowLevelLogger; | 155 class LowLevelLogger; |
| 155 class Sampler; | 156 class Sampler; |
| 156 | 157 |
| 157 | 158 |
| 158 class Logger { | 159 class Logger { |
| 159 public: | 160 public: |
| 160 #define DECLARE_ENUM(enum_item, ignore) enum_item, | 161 #define DECLARE_ENUM(enum_item, ignore) enum_item, |
| 161 enum LogEventsAndTags { | 162 enum LogEventsAndTags { |
| 162 LOG_EVENTS_AND_TAGS_LIST(DECLARE_ENUM) | 163 LOG_EVENTS_AND_TAGS_LIST(DECLARE_ENUM) |
| 163 NUMBER_OF_LOG_EVENTS | 164 NUMBER_OF_LOG_EVENTS |
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| 330 | 331 |
| 331 void RegExpCompileEvent(Handle<JSRegExp> regexp, bool in_cache); | 332 void RegExpCompileEvent(Handle<JSRegExp> regexp, bool in_cache); |
| 332 | 333 |
| 333 // Log an event reported from generated code | 334 // Log an event reported from generated code |
| 334 void LogRuntime(Vector<const char> format, JSArray* args); | 335 void LogRuntime(Vector<const char> format, JSArray* args); |
| 335 | 336 |
| 336 bool is_logging() { | 337 bool is_logging() { |
| 337 return logging_nesting_ > 0; | 338 return logging_nesting_ > 0; |
| 338 } | 339 } |
| 339 | 340 |
| 340 bool is_code_event_handler_enabled() { | |
| 341 return code_event_handler_ != NULL; | |
| 342 } | |
| 343 | |
| 344 bool is_logging_code_events() { | 341 bool is_logging_code_events() { |
| 345 return is_logging() || code_event_handler_ != NULL; | 342 return is_logging() || jit_logger_ != NULL; |
| 346 } | 343 } |
| 347 | 344 |
| 348 // Pause/Resume collection of profiling data. | 345 // Pause/Resume collection of profiling data. |
| 349 // When data collection is paused, CPU Tick events are discarded until | 346 // When data collection is paused, CPU Tick events are discarded until |
| 350 // data collection is Resumed. | 347 // data collection is Resumed. |
| 351 void PauseProfiler(); | 348 void PauseProfiler(); |
| 352 void ResumeProfiler(); | 349 void ResumeProfiler(); |
| 353 bool IsProfilerPaused(); | 350 bool IsProfilerPaused(); |
| 354 | 351 |
| 355 void LogExistingFunction(Handle<SharedFunctionInfo> shared, | 352 void LogExistingFunction(Handle<SharedFunctionInfo> shared, |
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| 370 // and laptop computers for which current heuristics are tuned. | 367 // and laptop computers for which current heuristics are tuned. |
| 371 static const int kSamplingIntervalMs = 5; | 368 static const int kSamplingIntervalMs = 5; |
| 372 #else | 369 #else |
| 373 static const int kSamplingIntervalMs = 1; | 370 static const int kSamplingIntervalMs = 1; |
| 374 #endif | 371 #endif |
| 375 | 372 |
| 376 // Callback from Log, stops profiling in case of insufficient resources. | 373 // Callback from Log, stops profiling in case of insufficient resources. |
| 377 void LogFailure(); | 374 void LogFailure(); |
| 378 | 375 |
| 379 private: | 376 private: |
| 380 class NameBuffer; | |
| 381 class NameMap; | |
| 382 | |
| 383 explicit Logger(Isolate* isolate); | 377 explicit Logger(Isolate* isolate); |
| 384 ~Logger(); | 378 ~Logger(); |
| 385 | 379 |
| 386 // Issue code notifications. | |
| 387 void IssueCodeAddedEvent(Code* code, | |
| 388 Script* script, | |
| 389 const char* name, | |
| 390 size_t name_len); | |
| 391 void IssueCodeMovedEvent(Address from, Address to); | |
| 392 void IssueCodeRemovedEvent(Address from); | |
| 393 void IssueAddCodeLinePosInfoEvent(void* jit_handler_data, | |
| 394 int pc_offset, | |
| 395 int position, | |
| 396 JitCodeEvent::PositionType position_Type); | |
| 397 void* IssueStartCodePosInfoEvent(); | |
| 398 void IssueEndCodePosInfoEvent(Code* code, void* jit_handler_data); | |
| 399 // Emits the profiler's first message. | 380 // Emits the profiler's first message. |
| 400 void ProfilerBeginEvent(); | 381 void ProfilerBeginEvent(); |
| 401 | 382 |
| 402 // Emits callback event messages. | 383 // Emits callback event messages. |
| 403 void CallbackEventInternal(const char* prefix, | 384 void CallbackEventInternal(const char* prefix, |
| 404 Name* name, | 385 Name* name, |
| 405 Address entry_point); | 386 Address entry_point); |
| 406 | 387 |
| 407 // Internal configurable move event. | 388 // Internal configurable move event. |
| 408 void MoveEventInternal(LogEventsAndTags event, Address from, Address to); | 389 void MoveEventInternal(LogEventsAndTags event, Address from, Address to); |
| 409 | 390 |
| 410 // Internal configurable move event. | |
| 411 void DeleteEventInternal(LogEventsAndTags event, Address from); | |
| 412 | |
| 413 // Emits the source code of a regexp. Used by regexp events. | 391 // Emits the source code of a regexp. Used by regexp events. |
| 414 void LogRegExpSource(Handle<JSRegExp> regexp); | 392 void LogRegExpSource(Handle<JSRegExp> regexp); |
| 415 | 393 |
| 416 // Used for logging stubs found in the snapshot. | 394 // Used for logging stubs found in the snapshot. |
| 417 void LogCodeObject(Object* code_object); | 395 void LogCodeObject(Object* code_object); |
| 418 | 396 |
| 419 // Helper method. It resets name_buffer_ and add tag name into it. | 397 // Helper method. It resets name_buffer_ and add tag name into it. |
| 420 void InitNameBuffer(LogEventsAndTags tag); | 398 void InitNameBuffer(LogEventsAndTags tag); |
| 421 | 399 |
| 422 // Helper method. It push recorded buffer into different handlers. | |
| 423 void LogRecordedBuffer(Code*, SharedFunctionInfo*); | |
| 424 | |
| 425 // Helper method. It dumps name into name_buffer_. | |
| 426 void AppendName(Name* name); | |
| 427 | |
| 428 // Appends standard code header. | |
| 429 void AppendCodeCreateHeader(LogMessageBuilder*, LogEventsAndTags, Code*); | |
| 430 | |
| 431 // Appends symbol for the name. | |
| 432 void AppendSymbolName(LogMessageBuilder*, Symbol*); | |
| 433 | |
| 434 void RegisterSnapshotCodeName(Code* code, const char* name, int name_size); | |
| 435 | |
| 436 // Emits a profiler tick event. Used by the profiler thread. | 400 // Emits a profiler tick event. Used by the profiler thread. |
| 437 void TickEvent(TickSample* sample, bool overflow); | 401 void TickEvent(TickSample* sample, bool overflow); |
| 438 | 402 |
| 439 void ApiEvent(const char* name, ...); | 403 void ApiEvent(const char* name, ...); |
| 440 | 404 |
| 441 // Logs a StringEvent regardless of whether FLAG_log is true. | 405 // Logs a StringEvent regardless of whether FLAG_log is true. |
| 442 void UncheckedStringEvent(const char* name, const char* value); | 406 void UncheckedStringEvent(const char* name, const char* value); |
| 443 | 407 |
| 444 // Logs an IntEvent regardless of whether FLAG_log is true. | 408 // Logs an IntEvent regardless of whether FLAG_log is true. |
| 445 void UncheckedIntEvent(const char* name, int value); | 409 void UncheckedIntEvent(const char* name, int value); |
| 446 void UncheckedIntPtrTEvent(const char* name, intptr_t value); | 410 void UncheckedIntPtrTEvent(const char* name, intptr_t value); |
| 447 | 411 |
| 448 Isolate* isolate_; | 412 Isolate* isolate_; |
| 449 | 413 |
| 450 // The sampler used by the profiler and the sliding state window. | 414 // The sampler used by the profiler and the sliding state window. |
| 451 Ticker* ticker_; | 415 Ticker* ticker_; |
| 452 | 416 |
| 453 // When the statistical profile is active, profiler_ | 417 // When the statistical profile is active, profiler_ |
| 454 // points to a Profiler, that handles collection | 418 // points to a Profiler, that handles collection |
| 455 // of samples. | 419 // of samples. |
| 456 Profiler* profiler_; | 420 Profiler* profiler_; |
| 457 | 421 |
| 458 // An array of log events names. | 422 // An array of log events names. |
| 459 const char* const* log_events_; | 423 const char* const* log_events_; |
| 460 | 424 |
| 461 // Internal implementation classes with access to | 425 // Internal implementation classes with access to |
| 462 // private members. | 426 // private members. |
| 463 friend class EventLog; | 427 friend class EventLog; |
| 464 friend class Isolate; | 428 friend class Isolate; |
| 465 friend class LogMessageBuilder; | |
| 466 friend class TimeLog; | 429 friend class TimeLog; |
| 467 friend class Profiler; | 430 friend class Profiler; |
| 468 template <StateTag Tag> friend class VMState; | 431 template <StateTag Tag> friend class VMState; |
| 469 | 432 |
| 470 friend class LoggerTestHelper; | 433 friend class LoggerTestHelper; |
| 471 | 434 |
| 472 | 435 |
| 473 int logging_nesting_; | 436 int logging_nesting_; |
| 474 int cpu_profiler_nesting_; | 437 int cpu_profiler_nesting_; |
| 475 | 438 |
| 476 Log* log_; | 439 Log* log_; |
| 477 LowLevelLogger* ll_logger_; | 440 LowLevelLogger* ll_logger_; |
| 478 | 441 JitLogger* jit_logger_; |
| 479 NameBuffer* name_buffer_; | 442 CodeAddressMap* code_address_map_; |
| 480 | |
| 481 NameMap* address_to_name_map_; | |
| 482 | 443 |
| 483 // Guards against multiple calls to TearDown() that can happen in some tests. | 444 // Guards against multiple calls to TearDown() that can happen in some tests. |
| 484 // 'true' between SetUp() and TearDown(). | 445 // 'true' between SetUp() and TearDown(). |
| 485 bool is_initialized_; | 446 bool is_initialized_; |
| 486 | 447 |
| 487 // The code event handler - if any. | |
| 488 JitCodeEventHandler code_event_handler_; | |
| 489 | |
| 490 // Support for 'incremental addresses' in compressed logs: | 448 // Support for 'incremental addresses' in compressed logs: |
| 491 // LogMessageBuilder::AppendAddress(Address addr) | 449 // LogMessageBuilder::AppendAddress(Address addr) |
| 492 Address last_address_; | 450 Address last_address_; |
| 493 // Logger::TickEvent(...) | 451 // Logger::TickEvent(...) |
| 494 Address prev_sp_; | 452 Address prev_sp_; |
| 495 Address prev_function_; | 453 Address prev_function_; |
| 496 // Logger::MoveEventInternal(...) | 454 // Logger::MoveEventInternal(...) |
| 497 Address prev_to_; | 455 Address prev_to_; |
| 498 // Logger::FunctionCreateEvent(...) | 456 // Logger::FunctionCreateEvent(...) |
| 499 Address prev_code_; | 457 Address prev_code_; |
| 500 | 458 |
| 501 int64_t epoch_; | 459 int64_t epoch_; |
| 502 | 460 |
| 503 friend class CpuProfiler; | 461 friend class CpuProfiler; |
| 504 }; | 462 }; |
| 505 | 463 |
| 506 | 464 |
| 507 } } // namespace v8::internal | 465 } } // namespace v8::internal |
| 508 | 466 |
| 509 | 467 |
| 510 #endif // V8_LOG_H_ | 468 #endif // V8_LOG_H_ |
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