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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 |
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63 // --log-regexp implies --log. | 63 // --log-regexp implies --log. |
64 // | 64 // |
65 // --logfile <filename> | 65 // --logfile <filename> |
66 // Specify the name of the logfile, default is "v8.log". | 66 // Specify the name of the logfile, default is "v8.log". |
67 // | 67 // |
68 // --prof | 68 // --prof |
69 // Collect statistical profiling information (ticks), default is off. The | 69 // Collect statistical profiling information (ticks), default is off. The |
70 // tick profiler requires code events, so --prof implies --log-code. | 70 // tick profiler requires code events, so --prof implies --log-code. |
71 | 71 |
72 // Forward declarations. | 72 // Forward declarations. |
| 73 class CodeAddressMap; |
73 class CompilationInfo; | 74 class CompilationInfo; |
74 class CpuProfiler; | 75 class CpuProfiler; |
75 class Isolate; | 76 class Isolate; |
76 class Log; | 77 class Log; |
77 class PositionsRecorder; | 78 class PositionsRecorder; |
78 class Profiler; | 79 class Profiler; |
79 class Semaphore; | 80 class Semaphore; |
80 class Ticker; | 81 class Ticker; |
81 struct TickSample; | 82 struct TickSample; |
82 | 83 |
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366 // and laptop computers for which current heuristics are tuned. | 367 // and laptop computers for which current heuristics are tuned. |
367 static const int kSamplingIntervalMs = 5; | 368 static const int kSamplingIntervalMs = 5; |
368 #else | 369 #else |
369 static const int kSamplingIntervalMs = 1; | 370 static const int kSamplingIntervalMs = 1; |
370 #endif | 371 #endif |
371 | 372 |
372 // Callback from Log, stops profiling in case of insufficient resources. | 373 // Callback from Log, stops profiling in case of insufficient resources. |
373 void LogFailure(); | 374 void LogFailure(); |
374 | 375 |
375 private: | 376 private: |
376 class NameBuffer; | |
377 class NameMap; | |
378 | |
379 explicit Logger(Isolate* isolate); | 377 explicit Logger(Isolate* isolate); |
380 ~Logger(); | 378 ~Logger(); |
381 | 379 |
382 // Emits the profiler's first message. | 380 // Emits the profiler's first message. |
383 void ProfilerBeginEvent(); | 381 void ProfilerBeginEvent(); |
384 | 382 |
385 // Emits callback event messages. | 383 // Emits callback event messages. |
386 void CallbackEventInternal(const char* prefix, | 384 void CallbackEventInternal(const char* prefix, |
387 Name* name, | 385 Name* name, |
388 Address entry_point); | 386 Address entry_point); |
389 | 387 |
390 // Internal configurable move event. | 388 // Internal configurable move event. |
391 void MoveEventInternal(LogEventsAndTags event, Address from, Address to); | 389 void MoveEventInternal(LogEventsAndTags event, Address from, Address to); |
392 | 390 |
393 // Internal configurable move event. | 391 // Internal configurable move event. |
394 void DeleteEventInternal(LogEventsAndTags event, Address from); | 392 void DeleteEventInternal(LogEventsAndTags event, Address from); |
395 | 393 |
396 // Emits the source code of a regexp. Used by regexp events. | 394 // Emits the source code of a regexp. Used by regexp events. |
397 void LogRegExpSource(Handle<JSRegExp> regexp); | 395 void LogRegExpSource(Handle<JSRegExp> regexp); |
398 | 396 |
399 // Used for logging stubs found in the snapshot. | 397 // Used for logging stubs found in the snapshot. |
400 void LogCodeObject(Object* code_object); | 398 void LogCodeObject(Object* code_object); |
401 | 399 |
402 // Helper method. It resets name_buffer_ and add tag name into it. | 400 // Helper method. It resets name_buffer_ and add tag name into it. |
403 void InitNameBuffer(LogEventsAndTags tag); | 401 void InitNameBuffer(LogEventsAndTags tag); |
404 | 402 |
405 // Helper method. It push recorded buffer into different handlers. | |
406 void LogRecordedBuffer(Code*, SharedFunctionInfo*); | |
407 | |
408 // Helper method. It dumps name into name_buffer_. | |
409 void AppendName(Name* name); | |
410 | |
411 void RegisterSnapshotCodeName(Code* code, const char* name, int name_size); | |
412 | |
413 // Emits a profiler tick event. Used by the profiler thread. | 403 // Emits a profiler tick event. Used by the profiler thread. |
414 void TickEvent(TickSample* sample, bool overflow); | 404 void TickEvent(TickSample* sample, bool overflow); |
415 | 405 |
416 void ApiEvent(const char* name, ...); | 406 void ApiEvent(const char* name, ...); |
417 | 407 |
418 // Logs a StringEvent regardless of whether FLAG_log is true. | 408 // Logs a StringEvent regardless of whether FLAG_log is true. |
419 void UncheckedStringEvent(const char* name, const char* value); | 409 void UncheckedStringEvent(const char* name, const char* value); |
420 | 410 |
421 // Logs an IntEvent regardless of whether FLAG_log is true. | 411 // Logs an IntEvent regardless of whether FLAG_log is true. |
422 void UncheckedIntEvent(const char* name, int value); | 412 void UncheckedIntEvent(const char* name, int value); |
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445 | 435 |
446 friend class LoggerTestHelper; | 436 friend class LoggerTestHelper; |
447 | 437 |
448 | 438 |
449 int logging_nesting_; | 439 int logging_nesting_; |
450 int cpu_profiler_nesting_; | 440 int cpu_profiler_nesting_; |
451 | 441 |
452 Log* log_; | 442 Log* log_; |
453 LowLevelLogger* ll_logger_; | 443 LowLevelLogger* ll_logger_; |
454 JitLogger* jit_logger_; | 444 JitLogger* jit_logger_; |
455 | 445 CodeAddressMap* code_address_map_; |
456 NameBuffer* name_buffer_; | |
457 | |
458 NameMap* address_to_name_map_; | |
459 | 446 |
460 // Guards against multiple calls to TearDown() that can happen in some tests. | 447 // Guards against multiple calls to TearDown() that can happen in some tests. |
461 // 'true' between SetUp() and TearDown(). | 448 // 'true' between SetUp() and TearDown(). |
462 bool is_initialized_; | 449 bool is_initialized_; |
463 | 450 |
464 // Support for 'incremental addresses' in compressed logs: | 451 // Support for 'incremental addresses' in compressed logs: |
465 // LogMessageBuilder::AppendAddress(Address addr) | 452 // LogMessageBuilder::AppendAddress(Address addr) |
466 Address last_address_; | 453 Address last_address_; |
467 // Logger::TickEvent(...) | 454 // Logger::TickEvent(...) |
468 Address prev_sp_; | 455 Address prev_sp_; |
469 Address prev_function_; | 456 Address prev_function_; |
470 // Logger::MoveEventInternal(...) | 457 // Logger::MoveEventInternal(...) |
471 Address prev_to_; | 458 Address prev_to_; |
472 // Logger::FunctionCreateEvent(...) | 459 // Logger::FunctionCreateEvent(...) |
473 Address prev_code_; | 460 Address prev_code_; |
474 | 461 |
475 int64_t epoch_; | 462 int64_t epoch_; |
476 | 463 |
477 friend class CpuProfiler; | 464 friend class CpuProfiler; |
478 }; | 465 }; |
479 | 466 |
480 | 467 |
481 } } // namespace v8::internal | 468 } } // namespace v8::internal |
482 | 469 |
483 | 470 |
484 #endif // V8_LOG_H_ | 471 #endif // V8_LOG_H_ |
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