Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2009 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 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. |
| 27 | |
| 28 | #include <stdarg.h> |
| 29 | |
| 30 | #include "v8.h" |
| 31 | |
| 32 | #include "bootstrapper.h" |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 33 | #include "global-handles.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 34 | #include "log.h" |
| 35 | #include "macro-assembler.h" |
| 36 | #include "serialize.h" |
| 37 | #include "string-stream.h" |
| 38 | |
| 39 | namespace v8 { |
| 40 | namespace internal { |
| 41 | |
| 42 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 43 | |
| 44 | // |
| 45 | // Sliding state window. Updates counters to keep track of the last |
| 46 | // window of kBufferSize states. This is useful to track where we |
| 47 | // spent our time. |
| 48 | // |
| 49 | class SlidingStateWindow { |
| 50 | public: |
| 51 | SlidingStateWindow(); |
| 52 | ~SlidingStateWindow(); |
| 53 | void AddState(StateTag state); |
| 54 | |
| 55 | private: |
| 56 | static const int kBufferSize = 256; |
| 57 | int current_index_; |
| 58 | bool is_full_; |
| 59 | byte buffer_[kBufferSize]; |
| 60 | |
| 61 | |
| 62 | void IncrementStateCounter(StateTag state) { |
| 63 | Counters::state_counters[state].Increment(); |
| 64 | } |
| 65 | |
| 66 | |
| 67 | void DecrementStateCounter(StateTag state) { |
| 68 | Counters::state_counters[state].Decrement(); |
| 69 | } |
| 70 | }; |
| 71 | |
| 72 | |
| 73 | // |
| 74 | // The Profiler samples pc and sp values for the main thread. |
| 75 | // Each sample is appended to a circular buffer. |
| 76 | // An independent thread removes data and writes it to the log. |
| 77 | // This design minimizes the time spent in the sampler. |
| 78 | // |
| 79 | class Profiler: public Thread { |
| 80 | public: |
| 81 | Profiler(); |
| 82 | void Engage(); |
| 83 | void Disengage(); |
| 84 | |
| 85 | // Inserts collected profiling data into buffer. |
| 86 | void Insert(TickSample* sample) { |
| 87 | if (paused_) |
| 88 | return; |
| 89 | |
| 90 | if (Succ(head_) == tail_) { |
| 91 | overflow_ = true; |
| 92 | } else { |
| 93 | buffer_[head_] = *sample; |
| 94 | head_ = Succ(head_); |
| 95 | buffer_semaphore_->Signal(); // Tell we have an element. |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | // Waits for a signal and removes profiling data. |
| 100 | bool Remove(TickSample* sample) { |
| 101 | buffer_semaphore_->Wait(); // Wait for an element. |
| 102 | *sample = buffer_[tail_]; |
| 103 | bool result = overflow_; |
| 104 | tail_ = Succ(tail_); |
| 105 | overflow_ = false; |
| 106 | return result; |
| 107 | } |
| 108 | |
| 109 | void Run(); |
| 110 | |
| 111 | // Pause and Resume TickSample data collection. |
| 112 | static bool paused() { return paused_; } |
| 113 | static void pause() { paused_ = true; } |
| 114 | static void resume() { paused_ = false; } |
| 115 | |
| 116 | private: |
| 117 | // Returns the next index in the cyclic buffer. |
| 118 | int Succ(int index) { return (index + 1) % kBufferSize; } |
| 119 | |
| 120 | // Cyclic buffer for communicating profiling samples |
| 121 | // between the signal handler and the worker thread. |
| 122 | static const int kBufferSize = 128; |
| 123 | TickSample buffer_[kBufferSize]; // Buffer storage. |
| 124 | int head_; // Index to the buffer head. |
| 125 | int tail_; // Index to the buffer tail. |
| 126 | bool overflow_; // Tell whether a buffer overflow has occurred. |
| 127 | Semaphore* buffer_semaphore_; // Sempahore used for buffer synchronization. |
| 128 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 129 | // Tells whether profiler is engaged, that is, processing thread is stated. |
| 130 | bool engaged_; |
| 131 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 132 | // Tells whether worker thread should continue running. |
| 133 | bool running_; |
| 134 | |
| 135 | // Tells whether we are currently recording tick samples. |
| 136 | static bool paused_; |
| 137 | }; |
| 138 | |
| 139 | bool Profiler::paused_ = false; |
| 140 | |
| 141 | |
| 142 | // |
| 143 | // StackTracer implementation |
| 144 | // |
| 145 | void StackTracer::Trace(TickSample* sample) { |
| 146 | if (sample->state == GC) { |
| 147 | sample->frames_count = 0; |
| 148 | return; |
| 149 | } |
| 150 | |
| 151 | const Address js_entry_sp = Top::js_entry_sp(Top::GetCurrentThread()); |
| 152 | if (js_entry_sp == 0) { |
| 153 | // Not executing JS now. |
| 154 | sample->frames_count = 0; |
| 155 | return; |
| 156 | } |
| 157 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 158 | const Address functionAddr = |
| 159 | sample->fp + JavaScriptFrameConstants::kFunctionOffset; |
| 160 | if (SafeStackFrameIterator::IsWithinBounds(sample->sp, js_entry_sp, |
| 161 | functionAddr)) { |
| 162 | sample->function = Memory::Address_at(functionAddr) - kHeapObjectTag; |
| 163 | } |
| 164 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 165 | int i = 0; |
| 166 | const Address callback = Logger::current_state_ != NULL ? |
| 167 | Logger::current_state_->external_callback() : NULL; |
| 168 | if (callback != NULL) { |
| 169 | sample->stack[i++] = callback; |
| 170 | } |
| 171 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 172 | SafeStackTraceFrameIterator it(sample->fp, sample->sp, |
| 173 | sample->sp, js_entry_sp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 174 | while (!it.done() && i < TickSample::kMaxFramesCount) { |
| 175 | sample->stack[i++] = it.frame()->pc(); |
| 176 | it.Advance(); |
| 177 | } |
| 178 | sample->frames_count = i; |
| 179 | } |
| 180 | |
| 181 | |
| 182 | // |
| 183 | // Ticker used to provide ticks to the profiler and the sliding state |
| 184 | // window. |
| 185 | // |
| 186 | class Ticker: public Sampler { |
| 187 | public: |
| 188 | explicit Ticker(int interval): |
| 189 | Sampler(interval, FLAG_prof), window_(NULL), profiler_(NULL) {} |
| 190 | |
| 191 | ~Ticker() { if (IsActive()) Stop(); } |
| 192 | |
| 193 | void SampleStack(TickSample* sample) { |
| 194 | StackTracer::Trace(sample); |
| 195 | } |
| 196 | |
| 197 | void Tick(TickSample* sample) { |
| 198 | if (profiler_) profiler_->Insert(sample); |
| 199 | if (window_) window_->AddState(sample->state); |
| 200 | } |
| 201 | |
| 202 | void SetWindow(SlidingStateWindow* window) { |
| 203 | window_ = window; |
| 204 | if (!IsActive()) Start(); |
| 205 | } |
| 206 | |
| 207 | void ClearWindow() { |
| 208 | window_ = NULL; |
| 209 | if (!profiler_ && IsActive()) Stop(); |
| 210 | } |
| 211 | |
| 212 | void SetProfiler(Profiler* profiler) { |
| 213 | profiler_ = profiler; |
| 214 | if (!FLAG_prof_lazy && !IsActive()) Start(); |
| 215 | } |
| 216 | |
| 217 | void ClearProfiler() { |
| 218 | profiler_ = NULL; |
| 219 | if (!window_ && IsActive()) Stop(); |
| 220 | } |
| 221 | |
| 222 | private: |
| 223 | SlidingStateWindow* window_; |
| 224 | Profiler* profiler_; |
| 225 | }; |
| 226 | |
| 227 | |
| 228 | // |
| 229 | // SlidingStateWindow implementation. |
| 230 | // |
| 231 | SlidingStateWindow::SlidingStateWindow(): current_index_(0), is_full_(false) { |
| 232 | for (int i = 0; i < kBufferSize; i++) { |
| 233 | buffer_[i] = static_cast<byte>(OTHER); |
| 234 | } |
| 235 | Logger::ticker_->SetWindow(this); |
| 236 | } |
| 237 | |
| 238 | |
| 239 | SlidingStateWindow::~SlidingStateWindow() { |
| 240 | Logger::ticker_->ClearWindow(); |
| 241 | } |
| 242 | |
| 243 | |
| 244 | void SlidingStateWindow::AddState(StateTag state) { |
| 245 | if (is_full_) { |
| 246 | DecrementStateCounter(static_cast<StateTag>(buffer_[current_index_])); |
| 247 | } else if (current_index_ == kBufferSize - 1) { |
| 248 | is_full_ = true; |
| 249 | } |
| 250 | buffer_[current_index_] = static_cast<byte>(state); |
| 251 | IncrementStateCounter(state); |
| 252 | ASSERT(IsPowerOf2(kBufferSize)); |
| 253 | current_index_ = (current_index_ + 1) & (kBufferSize - 1); |
| 254 | } |
| 255 | |
| 256 | |
| 257 | // |
| 258 | // Profiler implementation. |
| 259 | // |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 260 | Profiler::Profiler() |
| 261 | : head_(0), |
| 262 | tail_(0), |
| 263 | overflow_(false), |
| 264 | buffer_semaphore_(OS::CreateSemaphore(0)), |
| 265 | engaged_(false), |
| 266 | running_(false) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | |
| 270 | void Profiler::Engage() { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 271 | if (engaged_) return; |
| 272 | engaged_ = true; |
| 273 | |
| 274 | // TODO(mnaganov): This is actually "Chromium" mode. Flags need to be revised. |
| 275 | // http://code.google.com/p/v8/issues/detail?id=487 |
| 276 | if (!FLAG_prof_lazy) { |
| 277 | OS::LogSharedLibraryAddresses(); |
| 278 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 279 | |
| 280 | // Start thread processing the profiler buffer. |
| 281 | running_ = true; |
| 282 | Start(); |
| 283 | |
| 284 | // Register to get ticks. |
| 285 | Logger::ticker_->SetProfiler(this); |
| 286 | |
| 287 | Logger::ProfilerBeginEvent(); |
| 288 | Logger::LogAliases(); |
| 289 | } |
| 290 | |
| 291 | |
| 292 | void Profiler::Disengage() { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 293 | if (!engaged_) return; |
| 294 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 295 | // Stop receiving ticks. |
| 296 | Logger::ticker_->ClearProfiler(); |
| 297 | |
| 298 | // Terminate the worker thread by setting running_ to false, |
| 299 | // inserting a fake element in the queue and then wait for |
| 300 | // the thread to terminate. |
| 301 | running_ = false; |
| 302 | TickSample sample; |
| 303 | // Reset 'paused_' flag, otherwise semaphore may not be signalled. |
| 304 | resume(); |
| 305 | Insert(&sample); |
| 306 | Join(); |
| 307 | |
| 308 | LOG(UncheckedStringEvent("profiler", "end")); |
| 309 | } |
| 310 | |
| 311 | |
| 312 | void Profiler::Run() { |
| 313 | TickSample sample; |
| 314 | bool overflow = Logger::profiler_->Remove(&sample); |
| 315 | while (running_) { |
| 316 | LOG(TickEvent(&sample, overflow)); |
| 317 | overflow = Logger::profiler_->Remove(&sample); |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | |
| 322 | // |
| 323 | // Logger class implementation. |
| 324 | // |
| 325 | Ticker* Logger::ticker_ = NULL; |
| 326 | Profiler* Logger::profiler_ = NULL; |
| 327 | VMState* Logger::current_state_ = NULL; |
| 328 | VMState Logger::bottom_state_(EXTERNAL); |
| 329 | SlidingStateWindow* Logger::sliding_state_window_ = NULL; |
| 330 | const char** Logger::log_events_ = NULL; |
| 331 | CompressionHelper* Logger::compression_helper_ = NULL; |
| 332 | bool Logger::is_logging_ = false; |
| 333 | |
| 334 | #define DECLARE_LONG_EVENT(ignore1, long_name, ignore2) long_name, |
| 335 | const char* kLongLogEventsNames[Logger::NUMBER_OF_LOG_EVENTS] = { |
| 336 | LOG_EVENTS_AND_TAGS_LIST(DECLARE_LONG_EVENT) |
| 337 | }; |
| 338 | #undef DECLARE_LONG_EVENT |
| 339 | |
| 340 | #define DECLARE_SHORT_EVENT(ignore1, ignore2, short_name) short_name, |
| 341 | const char* kCompressedLogEventsNames[Logger::NUMBER_OF_LOG_EVENTS] = { |
| 342 | LOG_EVENTS_AND_TAGS_LIST(DECLARE_SHORT_EVENT) |
| 343 | }; |
| 344 | #undef DECLARE_SHORT_EVENT |
| 345 | |
| 346 | |
| 347 | void Logger::ProfilerBeginEvent() { |
| 348 | if (!Log::IsEnabled()) return; |
| 349 | LogMessageBuilder msg; |
| 350 | msg.Append("profiler,\"begin\",%d\n", kSamplingIntervalMs); |
| 351 | if (FLAG_compress_log) { |
| 352 | msg.Append("profiler,\"compression\",%d\n", kCompressionWindowSize); |
| 353 | } |
| 354 | msg.WriteToLogFile(); |
| 355 | } |
| 356 | |
| 357 | |
| 358 | void Logger::LogAliases() { |
| 359 | if (!Log::IsEnabled() || !FLAG_compress_log) return; |
| 360 | LogMessageBuilder msg; |
| 361 | for (int i = 0; i < NUMBER_OF_LOG_EVENTS; ++i) { |
| 362 | msg.Append("alias,%s,%s\n", |
| 363 | kCompressedLogEventsNames[i], kLongLogEventsNames[i]); |
| 364 | } |
| 365 | msg.WriteToLogFile(); |
| 366 | } |
| 367 | |
| 368 | #endif // ENABLE_LOGGING_AND_PROFILING |
| 369 | |
| 370 | |
| 371 | void Logger::Preamble(const char* content) { |
| 372 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 373 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 374 | LogMessageBuilder msg; |
| 375 | msg.WriteCStringToLogFile(content); |
| 376 | #endif |
| 377 | } |
| 378 | |
| 379 | |
| 380 | void Logger::StringEvent(const char* name, const char* value) { |
| 381 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 382 | if (FLAG_log) UncheckedStringEvent(name, value); |
| 383 | #endif |
| 384 | } |
| 385 | |
| 386 | |
| 387 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 388 | void Logger::UncheckedStringEvent(const char* name, const char* value) { |
| 389 | if (!Log::IsEnabled()) return; |
| 390 | LogMessageBuilder msg; |
| 391 | msg.Append("%s,\"%s\"\n", name, value); |
| 392 | msg.WriteToLogFile(); |
| 393 | } |
| 394 | #endif |
| 395 | |
| 396 | |
| 397 | void Logger::IntEvent(const char* name, int value) { |
| 398 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 399 | if (!Log::IsEnabled() || !FLAG_log) return; |
| 400 | LogMessageBuilder msg; |
| 401 | msg.Append("%s,%d\n", name, value); |
| 402 | msg.WriteToLogFile(); |
| 403 | #endif |
| 404 | } |
| 405 | |
| 406 | |
| 407 | void Logger::HandleEvent(const char* name, Object** location) { |
| 408 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 409 | if (!Log::IsEnabled() || !FLAG_log_handles) return; |
| 410 | LogMessageBuilder msg; |
| 411 | msg.Append("%s,0x%" V8PRIxPTR "\n", name, location); |
| 412 | msg.WriteToLogFile(); |
| 413 | #endif |
| 414 | } |
| 415 | |
| 416 | |
| 417 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 418 | // ApiEvent is private so all the calls come from the Logger class. It is the |
| 419 | // caller's responsibility to ensure that log is enabled and that |
| 420 | // FLAG_log_api is true. |
| 421 | void Logger::ApiEvent(const char* format, ...) { |
| 422 | ASSERT(Log::IsEnabled() && FLAG_log_api); |
| 423 | LogMessageBuilder msg; |
| 424 | va_list ap; |
| 425 | va_start(ap, format); |
| 426 | msg.AppendVA(format, ap); |
| 427 | va_end(ap); |
| 428 | msg.WriteToLogFile(); |
| 429 | } |
| 430 | #endif |
| 431 | |
| 432 | |
| 433 | void Logger::ApiNamedSecurityCheck(Object* key) { |
| 434 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 435 | if (!Log::IsEnabled() || !FLAG_log_api) return; |
| 436 | if (key->IsString()) { |
| 437 | SmartPointer<char> str = |
| 438 | String::cast(key)->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 439 | ApiEvent("api,check-security,\"%s\"\n", *str); |
| 440 | } else if (key->IsUndefined()) { |
| 441 | ApiEvent("api,check-security,undefined\n"); |
| 442 | } else { |
| 443 | ApiEvent("api,check-security,['no-name']\n"); |
| 444 | } |
| 445 | #endif |
| 446 | } |
| 447 | |
| 448 | |
| 449 | void Logger::SharedLibraryEvent(const char* library_path, |
| 450 | uintptr_t start, |
| 451 | uintptr_t end) { |
| 452 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 453 | if (!Log::IsEnabled() || !FLAG_prof) return; |
| 454 | LogMessageBuilder msg; |
| 455 | msg.Append("shared-library,\"%s\",0x%08" V8PRIxPTR ",0x%08" V8PRIxPTR "\n", |
| 456 | library_path, |
| 457 | start, |
| 458 | end); |
| 459 | msg.WriteToLogFile(); |
| 460 | #endif |
| 461 | } |
| 462 | |
| 463 | |
| 464 | void Logger::SharedLibraryEvent(const wchar_t* library_path, |
| 465 | uintptr_t start, |
| 466 | uintptr_t end) { |
| 467 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 468 | if (!Log::IsEnabled() || !FLAG_prof) return; |
| 469 | LogMessageBuilder msg; |
| 470 | msg.Append("shared-library,\"%ls\",0x%08" V8PRIxPTR ",0x%08" V8PRIxPTR "\n", |
| 471 | library_path, |
| 472 | start, |
| 473 | end); |
| 474 | msg.WriteToLogFile(); |
| 475 | #endif |
| 476 | } |
| 477 | |
| 478 | |
| 479 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 480 | void Logger::LogRegExpSource(Handle<JSRegExp> regexp) { |
| 481 | // Prints "/" + re.source + "/" + |
| 482 | // (re.global?"g":"") + (re.ignorecase?"i":"") + (re.multiline?"m":"") |
| 483 | LogMessageBuilder msg; |
| 484 | |
| 485 | Handle<Object> source = GetProperty(regexp, "source"); |
| 486 | if (!source->IsString()) { |
| 487 | msg.Append("no source"); |
| 488 | return; |
| 489 | } |
| 490 | |
| 491 | switch (regexp->TypeTag()) { |
| 492 | case JSRegExp::ATOM: |
| 493 | msg.Append('a'); |
| 494 | break; |
| 495 | default: |
| 496 | break; |
| 497 | } |
| 498 | msg.Append('/'); |
| 499 | msg.AppendDetailed(*Handle<String>::cast(source), false); |
| 500 | msg.Append('/'); |
| 501 | |
| 502 | // global flag |
| 503 | Handle<Object> global = GetProperty(regexp, "global"); |
| 504 | if (global->IsTrue()) { |
| 505 | msg.Append('g'); |
| 506 | } |
| 507 | // ignorecase flag |
| 508 | Handle<Object> ignorecase = GetProperty(regexp, "ignoreCase"); |
| 509 | if (ignorecase->IsTrue()) { |
| 510 | msg.Append('i'); |
| 511 | } |
| 512 | // multiline flag |
| 513 | Handle<Object> multiline = GetProperty(regexp, "multiline"); |
| 514 | if (multiline->IsTrue()) { |
| 515 | msg.Append('m'); |
| 516 | } |
| 517 | |
| 518 | msg.WriteToLogFile(); |
| 519 | } |
| 520 | #endif // ENABLE_LOGGING_AND_PROFILING |
| 521 | |
| 522 | |
| 523 | void Logger::RegExpCompileEvent(Handle<JSRegExp> regexp, bool in_cache) { |
| 524 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 525 | if (!Log::IsEnabled() || !FLAG_log_regexp) return; |
| 526 | LogMessageBuilder msg; |
| 527 | msg.Append("regexp-compile,"); |
| 528 | LogRegExpSource(regexp); |
| 529 | msg.Append(in_cache ? ",hit\n" : ",miss\n"); |
| 530 | msg.WriteToLogFile(); |
| 531 | #endif |
| 532 | } |
| 533 | |
| 534 | |
| 535 | void Logger::LogRuntime(Vector<const char> format, JSArray* args) { |
| 536 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 537 | if (!Log::IsEnabled() || !FLAG_log_runtime) return; |
| 538 | HandleScope scope; |
| 539 | LogMessageBuilder msg; |
| 540 | for (int i = 0; i < format.length(); i++) { |
| 541 | char c = format[i]; |
| 542 | if (c == '%' && i <= format.length() - 2) { |
| 543 | i++; |
| 544 | ASSERT('0' <= format[i] && format[i] <= '9'); |
| 545 | Object* obj = args->GetElement(format[i] - '0'); |
| 546 | i++; |
| 547 | switch (format[i]) { |
| 548 | case 's': |
| 549 | msg.AppendDetailed(String::cast(obj), false); |
| 550 | break; |
| 551 | case 'S': |
| 552 | msg.AppendDetailed(String::cast(obj), true); |
| 553 | break; |
| 554 | case 'r': |
| 555 | Logger::LogRegExpSource(Handle<JSRegExp>(JSRegExp::cast(obj))); |
| 556 | break; |
| 557 | case 'x': |
| 558 | msg.Append("0x%x", Smi::cast(obj)->value()); |
| 559 | break; |
| 560 | case 'i': |
| 561 | msg.Append("%i", Smi::cast(obj)->value()); |
| 562 | break; |
| 563 | default: |
| 564 | UNREACHABLE(); |
| 565 | } |
| 566 | } else { |
| 567 | msg.Append(c); |
| 568 | } |
| 569 | } |
| 570 | msg.Append('\n'); |
| 571 | msg.WriteToLogFile(); |
| 572 | #endif |
| 573 | } |
| 574 | |
| 575 | |
| 576 | void Logger::ApiIndexedSecurityCheck(uint32_t index) { |
| 577 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 578 | if (!Log::IsEnabled() || !FLAG_log_api) return; |
| 579 | ApiEvent("api,check-security,%u\n", index); |
| 580 | #endif |
| 581 | } |
| 582 | |
| 583 | |
| 584 | void Logger::ApiNamedPropertyAccess(const char* tag, |
| 585 | JSObject* holder, |
| 586 | Object* name) { |
| 587 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 588 | ASSERT(name->IsString()); |
| 589 | if (!Log::IsEnabled() || !FLAG_log_api) return; |
| 590 | String* class_name_obj = holder->class_name(); |
| 591 | SmartPointer<char> class_name = |
| 592 | class_name_obj->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 593 | SmartPointer<char> property_name = |
| 594 | String::cast(name)->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 595 | Logger::ApiEvent("api,%s,\"%s\",\"%s\"\n", tag, *class_name, *property_name); |
| 596 | #endif |
| 597 | } |
| 598 | |
| 599 | void Logger::ApiIndexedPropertyAccess(const char* tag, |
| 600 | JSObject* holder, |
| 601 | uint32_t index) { |
| 602 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 603 | if (!Log::IsEnabled() || !FLAG_log_api) return; |
| 604 | String* class_name_obj = holder->class_name(); |
| 605 | SmartPointer<char> class_name = |
| 606 | class_name_obj->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 607 | Logger::ApiEvent("api,%s,\"%s\",%u\n", tag, *class_name, index); |
| 608 | #endif |
| 609 | } |
| 610 | |
| 611 | void Logger::ApiObjectAccess(const char* tag, JSObject* object) { |
| 612 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 613 | if (!Log::IsEnabled() || !FLAG_log_api) return; |
| 614 | String* class_name_obj = object->class_name(); |
| 615 | SmartPointer<char> class_name = |
| 616 | class_name_obj->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 617 | Logger::ApiEvent("api,%s,\"%s\"\n", tag, *class_name); |
| 618 | #endif |
| 619 | } |
| 620 | |
| 621 | |
| 622 | void Logger::ApiEntryCall(const char* name) { |
| 623 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 624 | if (!Log::IsEnabled() || !FLAG_log_api) return; |
| 625 | Logger::ApiEvent("api,%s\n", name); |
| 626 | #endif |
| 627 | } |
| 628 | |
| 629 | |
| 630 | void Logger::NewEvent(const char* name, void* object, size_t size) { |
| 631 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 632 | if (!Log::IsEnabled() || !FLAG_log) return; |
| 633 | LogMessageBuilder msg; |
| 634 | msg.Append("new,%s,0x%" V8PRIxPTR ",%u\n", name, object, |
| 635 | static_cast<unsigned int>(size)); |
| 636 | msg.WriteToLogFile(); |
| 637 | #endif |
| 638 | } |
| 639 | |
| 640 | |
| 641 | void Logger::DeleteEvent(const char* name, void* object) { |
| 642 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 643 | if (!Log::IsEnabled() || !FLAG_log) return; |
| 644 | LogMessageBuilder msg; |
| 645 | msg.Append("delete,%s,0x%" V8PRIxPTR "\n", name, object); |
| 646 | msg.WriteToLogFile(); |
| 647 | #endif |
| 648 | } |
| 649 | |
| 650 | |
| 651 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 652 | |
| 653 | // A class that contains all common code dealing with record compression. |
| 654 | class CompressionHelper { |
| 655 | public: |
| 656 | explicit CompressionHelper(int window_size) |
| 657 | : compressor_(window_size), repeat_count_(0) { } |
| 658 | |
| 659 | // Handles storing message in compressor, retrieving the previous one and |
| 660 | // prefixing it with repeat count, if needed. |
| 661 | // Returns true if message needs to be written to log. |
| 662 | bool HandleMessage(LogMessageBuilder* msg) { |
| 663 | if (!msg->StoreInCompressor(&compressor_)) { |
| 664 | // Current message repeats the previous one, don't write it. |
| 665 | ++repeat_count_; |
| 666 | return false; |
| 667 | } |
| 668 | if (repeat_count_ == 0) { |
| 669 | return msg->RetrieveCompressedPrevious(&compressor_); |
| 670 | } |
| 671 | OS::SNPrintF(prefix_, "%s,%d,", |
| 672 | Logger::log_events_[Logger::REPEAT_META_EVENT], |
| 673 | repeat_count_ + 1); |
| 674 | repeat_count_ = 0; |
| 675 | return msg->RetrieveCompressedPrevious(&compressor_, prefix_.start()); |
| 676 | } |
| 677 | |
| 678 | private: |
| 679 | LogRecordCompressor compressor_; |
| 680 | int repeat_count_; |
| 681 | EmbeddedVector<char, 20> prefix_; |
| 682 | }; |
| 683 | |
| 684 | #endif // ENABLE_LOGGING_AND_PROFILING |
| 685 | |
| 686 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 687 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 688 | void Logger::CallbackEventInternal(const char* prefix, const char* name, |
| 689 | Address entry_point) { |
| 690 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 691 | LogMessageBuilder msg; |
| 692 | msg.Append("%s,%s,", |
| 693 | log_events_[CODE_CREATION_EVENT], log_events_[CALLBACK_TAG]); |
| 694 | msg.AppendAddress(entry_point); |
| 695 | msg.Append(",1,\"%s%s\"", prefix, name); |
| 696 | if (FLAG_compress_log) { |
| 697 | ASSERT(compression_helper_ != NULL); |
| 698 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 699 | } |
| 700 | msg.Append('\n'); |
| 701 | msg.WriteToLogFile(); |
| 702 | } |
| 703 | #endif |
| 704 | |
| 705 | |
| 706 | void Logger::CallbackEvent(String* name, Address entry_point) { |
| 707 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 708 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 709 | SmartPointer<char> str = |
| 710 | name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 711 | CallbackEventInternal("", *str, entry_point); |
| 712 | #endif |
| 713 | } |
| 714 | |
| 715 | |
| 716 | void Logger::GetterCallbackEvent(String* name, Address entry_point) { |
| 717 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 718 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 719 | SmartPointer<char> str = |
| 720 | name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 721 | CallbackEventInternal("get ", *str, entry_point); |
| 722 | #endif |
| 723 | } |
| 724 | |
| 725 | |
| 726 | void Logger::SetterCallbackEvent(String* name, Address entry_point) { |
| 727 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 728 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 729 | SmartPointer<char> str = |
| 730 | name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 731 | CallbackEventInternal("set ", *str, entry_point); |
| 732 | #endif |
| 733 | } |
| 734 | |
| 735 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 736 | void Logger::CodeCreateEvent(LogEventsAndTags tag, |
| 737 | Code* code, |
| 738 | const char* comment) { |
| 739 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 740 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 741 | LogMessageBuilder msg; |
| 742 | msg.Append("%s,%s,", log_events_[CODE_CREATION_EVENT], log_events_[tag]); |
| 743 | msg.AppendAddress(code->address()); |
| 744 | msg.Append(",%d,\"", code->ExecutableSize()); |
| 745 | for (const char* p = comment; *p != '\0'; p++) { |
| 746 | if (*p == '"') { |
| 747 | msg.Append('\\'); |
| 748 | } |
| 749 | msg.Append(*p); |
| 750 | } |
| 751 | msg.Append('"'); |
| 752 | if (FLAG_compress_log) { |
| 753 | ASSERT(compression_helper_ != NULL); |
| 754 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 755 | } |
| 756 | msg.Append('\n'); |
| 757 | msg.WriteToLogFile(); |
| 758 | #endif |
| 759 | } |
| 760 | |
| 761 | |
| 762 | void Logger::CodeCreateEvent(LogEventsAndTags tag, Code* code, String* name) { |
| 763 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 764 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 765 | LogMessageBuilder msg; |
| 766 | SmartPointer<char> str = |
| 767 | name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 768 | msg.Append("%s,%s,", log_events_[CODE_CREATION_EVENT], log_events_[tag]); |
| 769 | msg.AppendAddress(code->address()); |
| 770 | msg.Append(",%d,\"%s\"", code->ExecutableSize(), *str); |
| 771 | if (FLAG_compress_log) { |
| 772 | ASSERT(compression_helper_ != NULL); |
| 773 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 774 | } |
| 775 | msg.Append('\n'); |
| 776 | msg.WriteToLogFile(); |
| 777 | #endif |
| 778 | } |
| 779 | |
| 780 | |
| 781 | void Logger::CodeCreateEvent(LogEventsAndTags tag, |
| 782 | Code* code, String* name, |
| 783 | String* source, int line) { |
| 784 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 785 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 786 | LogMessageBuilder msg; |
| 787 | SmartPointer<char> str = |
| 788 | name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 789 | SmartPointer<char> sourcestr = |
| 790 | source->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); |
| 791 | msg.Append("%s,%s,", log_events_[CODE_CREATION_EVENT], log_events_[tag]); |
| 792 | msg.AppendAddress(code->address()); |
| 793 | msg.Append(",%d,\"%s %s:%d\"", |
| 794 | code->ExecutableSize(), *str, *sourcestr, line); |
| 795 | if (FLAG_compress_log) { |
| 796 | ASSERT(compression_helper_ != NULL); |
| 797 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 798 | } |
| 799 | msg.Append('\n'); |
| 800 | msg.WriteToLogFile(); |
| 801 | #endif |
| 802 | } |
| 803 | |
| 804 | |
| 805 | void Logger::CodeCreateEvent(LogEventsAndTags tag, Code* code, int args_count) { |
| 806 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 807 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 808 | LogMessageBuilder msg; |
| 809 | msg.Append("%s,%s,", log_events_[CODE_CREATION_EVENT], log_events_[tag]); |
| 810 | msg.AppendAddress(code->address()); |
| 811 | msg.Append(",%d,\"args_count: %d\"", code->ExecutableSize(), args_count); |
| 812 | if (FLAG_compress_log) { |
| 813 | ASSERT(compression_helper_ != NULL); |
| 814 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 815 | } |
| 816 | msg.Append('\n'); |
| 817 | msg.WriteToLogFile(); |
| 818 | #endif |
| 819 | } |
| 820 | |
| 821 | |
| 822 | void Logger::RegExpCodeCreateEvent(Code* code, String* source) { |
| 823 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 824 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 825 | LogMessageBuilder msg; |
| 826 | msg.Append("%s,%s,", |
| 827 | log_events_[CODE_CREATION_EVENT], log_events_[REG_EXP_TAG]); |
| 828 | msg.AppendAddress(code->address()); |
| 829 | msg.Append(",%d,\"", code->ExecutableSize()); |
| 830 | msg.AppendDetailed(source, false); |
| 831 | msg.Append('\"'); |
| 832 | if (FLAG_compress_log) { |
| 833 | ASSERT(compression_helper_ != NULL); |
| 834 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 835 | } |
| 836 | msg.Append('\n'); |
| 837 | msg.WriteToLogFile(); |
| 838 | #endif |
| 839 | } |
| 840 | |
| 841 | |
| 842 | void Logger::CodeMoveEvent(Address from, Address to) { |
| 843 | #ifdef ENABLE_LOGGING_AND_PROFILING |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 844 | MoveEventInternal(CODE_MOVE_EVENT, from, to); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 845 | #endif |
| 846 | } |
| 847 | |
| 848 | |
| 849 | void Logger::CodeDeleteEvent(Address from) { |
| 850 | #ifdef ENABLE_LOGGING_AND_PROFILING |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 851 | DeleteEventInternal(CODE_DELETE_EVENT, from); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 852 | #endif |
| 853 | } |
| 854 | |
| 855 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 856 | void Logger::SnapshotPositionEvent(Address addr, int pos) { |
| 857 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 858 | if (!Log::IsEnabled() || !FLAG_log_snapshot_positions) return; |
| 859 | LogMessageBuilder msg; |
| 860 | msg.Append("%s,", log_events_[SNAPSHOT_POSITION_EVENT]); |
| 861 | msg.AppendAddress(addr); |
| 862 | msg.Append(",%d", pos); |
| 863 | if (FLAG_compress_log) { |
| 864 | ASSERT(compression_helper_ != NULL); |
| 865 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 866 | } |
| 867 | msg.Append('\n'); |
| 868 | msg.WriteToLogFile(); |
| 869 | #endif |
| 870 | } |
| 871 | |
| 872 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 873 | void Logger::FunctionCreateEvent(JSFunction* function) { |
| 874 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 875 | static Address prev_code = NULL; |
| 876 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 877 | LogMessageBuilder msg; |
| 878 | msg.Append("%s,", log_events_[FUNCTION_CREATION_EVENT]); |
| 879 | msg.AppendAddress(function->address()); |
| 880 | msg.Append(','); |
| 881 | msg.AppendAddress(function->code()->address(), prev_code); |
| 882 | prev_code = function->code()->address(); |
| 883 | if (FLAG_compress_log) { |
| 884 | ASSERT(compression_helper_ != NULL); |
| 885 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 886 | } |
| 887 | msg.Append('\n'); |
| 888 | msg.WriteToLogFile(); |
| 889 | #endif |
| 890 | } |
| 891 | |
| 892 | |
| 893 | void Logger::FunctionMoveEvent(Address from, Address to) { |
| 894 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 895 | MoveEventInternal(FUNCTION_MOVE_EVENT, from, to); |
| 896 | #endif |
| 897 | } |
| 898 | |
| 899 | |
| 900 | void Logger::FunctionDeleteEvent(Address from) { |
| 901 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 902 | DeleteEventInternal(FUNCTION_DELETE_EVENT, from); |
| 903 | #endif |
| 904 | } |
| 905 | |
| 906 | |
| 907 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 908 | void Logger::MoveEventInternal(LogEventsAndTags event, |
| 909 | Address from, |
| 910 | Address to) { |
| 911 | static Address prev_to_ = NULL; |
| 912 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 913 | LogMessageBuilder msg; |
| 914 | msg.Append("%s,", log_events_[event]); |
| 915 | msg.AppendAddress(from); |
| 916 | msg.Append(','); |
| 917 | msg.AppendAddress(to, prev_to_); |
| 918 | prev_to_ = to; |
| 919 | if (FLAG_compress_log) { |
| 920 | ASSERT(compression_helper_ != NULL); |
| 921 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 922 | } |
| 923 | msg.Append('\n'); |
| 924 | msg.WriteToLogFile(); |
| 925 | } |
| 926 | #endif |
| 927 | |
| 928 | |
| 929 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 930 | void Logger::DeleteEventInternal(LogEventsAndTags event, Address from) { |
| 931 | if (!Log::IsEnabled() || !FLAG_log_code) return; |
| 932 | LogMessageBuilder msg; |
| 933 | msg.Append("%s,", log_events_[event]); |
| 934 | msg.AppendAddress(from); |
| 935 | if (FLAG_compress_log) { |
| 936 | ASSERT(compression_helper_ != NULL); |
| 937 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 938 | } |
| 939 | msg.Append('\n'); |
| 940 | msg.WriteToLogFile(); |
| 941 | } |
| 942 | #endif |
| 943 | |
| 944 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 945 | void Logger::ResourceEvent(const char* name, const char* tag) { |
| 946 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 947 | if (!Log::IsEnabled() || !FLAG_log) return; |
| 948 | LogMessageBuilder msg; |
| 949 | msg.Append("%s,%s,", name, tag); |
| 950 | |
| 951 | uint32_t sec, usec; |
| 952 | if (OS::GetUserTime(&sec, &usec) != -1) { |
| 953 | msg.Append("%d,%d,", sec, usec); |
| 954 | } |
| 955 | msg.Append("%.0f", OS::TimeCurrentMillis()); |
| 956 | |
| 957 | msg.Append('\n'); |
| 958 | msg.WriteToLogFile(); |
| 959 | #endif |
| 960 | } |
| 961 | |
| 962 | |
| 963 | void Logger::SuspectReadEvent(String* name, Object* obj) { |
| 964 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 965 | if (!Log::IsEnabled() || !FLAG_log_suspect) return; |
| 966 | LogMessageBuilder msg; |
| 967 | String* class_name = obj->IsJSObject() |
| 968 | ? JSObject::cast(obj)->class_name() |
| 969 | : Heap::empty_string(); |
| 970 | msg.Append("suspect-read,"); |
| 971 | msg.Append(class_name); |
| 972 | msg.Append(','); |
| 973 | msg.Append('"'); |
| 974 | msg.Append(name); |
| 975 | msg.Append('"'); |
| 976 | msg.Append('\n'); |
| 977 | msg.WriteToLogFile(); |
| 978 | #endif |
| 979 | } |
| 980 | |
| 981 | |
| 982 | void Logger::HeapSampleBeginEvent(const char* space, const char* kind) { |
| 983 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 984 | if (!Log::IsEnabled() || !FLAG_log_gc) return; |
| 985 | LogMessageBuilder msg; |
| 986 | // Using non-relative system time in order to be able to synchronize with |
| 987 | // external memory profiling events (e.g. DOM memory size). |
| 988 | msg.Append("heap-sample-begin,\"%s\",\"%s\",%.0f\n", |
| 989 | space, kind, OS::TimeCurrentMillis()); |
| 990 | msg.WriteToLogFile(); |
| 991 | #endif |
| 992 | } |
| 993 | |
| 994 | |
| 995 | void Logger::HeapSampleStats(const char* space, const char* kind, |
| 996 | int capacity, int used) { |
| 997 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 998 | if (!Log::IsEnabled() || !FLAG_log_gc) return; |
| 999 | LogMessageBuilder msg; |
| 1000 | msg.Append("heap-sample-stats,\"%s\",\"%s\",%d,%d\n", |
| 1001 | space, kind, capacity, used); |
| 1002 | msg.WriteToLogFile(); |
| 1003 | #endif |
| 1004 | } |
| 1005 | |
| 1006 | |
| 1007 | void Logger::HeapSampleEndEvent(const char* space, const char* kind) { |
| 1008 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1009 | if (!Log::IsEnabled() || !FLAG_log_gc) return; |
| 1010 | LogMessageBuilder msg; |
| 1011 | msg.Append("heap-sample-end,\"%s\",\"%s\"\n", space, kind); |
| 1012 | msg.WriteToLogFile(); |
| 1013 | #endif |
| 1014 | } |
| 1015 | |
| 1016 | |
| 1017 | void Logger::HeapSampleItemEvent(const char* type, int number, int bytes) { |
| 1018 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1019 | if (!Log::IsEnabled() || !FLAG_log_gc) return; |
| 1020 | LogMessageBuilder msg; |
| 1021 | msg.Append("heap-sample-item,%s,%d,%d\n", type, number, bytes); |
| 1022 | msg.WriteToLogFile(); |
| 1023 | #endif |
| 1024 | } |
| 1025 | |
| 1026 | |
| 1027 | void Logger::HeapSampleJSConstructorEvent(const char* constructor, |
| 1028 | int number, int bytes) { |
| 1029 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1030 | if (!Log::IsEnabled() || !FLAG_log_gc) return; |
| 1031 | LogMessageBuilder msg; |
| 1032 | msg.Append("heap-js-cons-item,%s,%d,%d\n", constructor, number, bytes); |
| 1033 | msg.WriteToLogFile(); |
| 1034 | #endif |
| 1035 | } |
| 1036 | |
| 1037 | |
| 1038 | void Logger::HeapSampleJSRetainersEvent( |
| 1039 | const char* constructor, const char* event) { |
| 1040 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1041 | if (!Log::IsEnabled() || !FLAG_log_gc) return; |
| 1042 | // Event starts with comma, so we don't have it in the format string. |
| 1043 | static const char* event_text = "heap-js-ret-item,%s"; |
| 1044 | // We take placeholder strings into account, but it's OK to be conservative. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1045 | static const int event_text_len = StrLength(event_text); |
| 1046 | const int cons_len = StrLength(constructor); |
| 1047 | const int event_len = StrLength(event); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1048 | int pos = 0; |
| 1049 | // Retainer lists can be long. We may need to split them into multiple events. |
| 1050 | do { |
| 1051 | LogMessageBuilder msg; |
| 1052 | msg.Append(event_text, constructor); |
| 1053 | int to_write = event_len - pos; |
| 1054 | if (to_write > Log::kMessageBufferSize - (cons_len + event_text_len)) { |
| 1055 | int cut_pos = pos + Log::kMessageBufferSize - (cons_len + event_text_len); |
| 1056 | ASSERT(cut_pos < event_len); |
| 1057 | while (cut_pos > pos && event[cut_pos] != ',') --cut_pos; |
| 1058 | if (event[cut_pos] != ',') { |
| 1059 | // Crash in debug mode, skip in release mode. |
| 1060 | ASSERT(false); |
| 1061 | return; |
| 1062 | } |
| 1063 | // Append a piece of event that fits, without trailing comma. |
| 1064 | msg.AppendStringPart(event + pos, cut_pos - pos); |
| 1065 | // Start next piece with comma. |
| 1066 | pos = cut_pos; |
| 1067 | } else { |
| 1068 | msg.Append("%s", event + pos); |
| 1069 | pos += event_len; |
| 1070 | } |
| 1071 | msg.Append('\n'); |
| 1072 | msg.WriteToLogFile(); |
| 1073 | } while (pos < event_len); |
| 1074 | #endif |
| 1075 | } |
| 1076 | |
| 1077 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1078 | void Logger::HeapSampleJSProducerEvent(const char* constructor, |
| 1079 | Address* stack) { |
| 1080 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1081 | if (!Log::IsEnabled() || !FLAG_log_gc) return; |
| 1082 | LogMessageBuilder msg; |
| 1083 | msg.Append("heap-js-prod-item,%s", constructor); |
| 1084 | while (*stack != NULL) { |
| 1085 | msg.Append(",0x%" V8PRIxPTR, *stack++); |
| 1086 | } |
| 1087 | msg.Append("\n"); |
| 1088 | msg.WriteToLogFile(); |
| 1089 | #endif |
| 1090 | } |
| 1091 | |
| 1092 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1093 | void Logger::DebugTag(const char* call_site_tag) { |
| 1094 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1095 | if (!Log::IsEnabled() || !FLAG_log) return; |
| 1096 | LogMessageBuilder msg; |
| 1097 | msg.Append("debug-tag,%s\n", call_site_tag); |
| 1098 | msg.WriteToLogFile(); |
| 1099 | #endif |
| 1100 | } |
| 1101 | |
| 1102 | |
| 1103 | void Logger::DebugEvent(const char* event_type, Vector<uint16_t> parameter) { |
| 1104 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1105 | if (!Log::IsEnabled() || !FLAG_log) return; |
| 1106 | StringBuilder s(parameter.length() + 1); |
| 1107 | for (int i = 0; i < parameter.length(); ++i) { |
| 1108 | s.AddCharacter(static_cast<char>(parameter[i])); |
| 1109 | } |
| 1110 | char* parameter_string = s.Finalize(); |
| 1111 | LogMessageBuilder msg; |
| 1112 | msg.Append("debug-queue-event,%s,%15.3f,%s\n", |
| 1113 | event_type, |
| 1114 | OS::TimeCurrentMillis(), |
| 1115 | parameter_string); |
| 1116 | DeleteArray(parameter_string); |
| 1117 | msg.WriteToLogFile(); |
| 1118 | #endif |
| 1119 | } |
| 1120 | |
| 1121 | |
| 1122 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1123 | void Logger::TickEvent(TickSample* sample, bool overflow) { |
| 1124 | if (!Log::IsEnabled() || !FLAG_prof) return; |
| 1125 | static Address prev_sp = NULL; |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 1126 | static Address prev_function = NULL; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1127 | LogMessageBuilder msg; |
| 1128 | msg.Append("%s,", log_events_[TICK_EVENT]); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 1129 | Address prev_addr = sample->pc; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1130 | msg.AppendAddress(prev_addr); |
| 1131 | msg.Append(','); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 1132 | msg.AppendAddress(sample->sp, prev_sp); |
| 1133 | prev_sp = sample->sp; |
| 1134 | msg.Append(','); |
| 1135 | msg.AppendAddress(sample->function, prev_function); |
| 1136 | prev_function = sample->function; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1137 | msg.Append(",%d", static_cast<int>(sample->state)); |
| 1138 | if (overflow) { |
| 1139 | msg.Append(",overflow"); |
| 1140 | } |
| 1141 | for (int i = 0; i < sample->frames_count; ++i) { |
| 1142 | msg.Append(','); |
| 1143 | msg.AppendAddress(sample->stack[i], prev_addr); |
| 1144 | prev_addr = sample->stack[i]; |
| 1145 | } |
| 1146 | if (FLAG_compress_log) { |
| 1147 | ASSERT(compression_helper_ != NULL); |
| 1148 | if (!compression_helper_->HandleMessage(&msg)) return; |
| 1149 | } |
| 1150 | msg.Append('\n'); |
| 1151 | msg.WriteToLogFile(); |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | int Logger::GetActiveProfilerModules() { |
| 1156 | int result = PROFILER_MODULE_NONE; |
| 1157 | if (!profiler_->paused()) { |
| 1158 | result |= PROFILER_MODULE_CPU; |
| 1159 | } |
| 1160 | if (FLAG_log_gc) { |
| 1161 | result |= PROFILER_MODULE_HEAP_STATS | PROFILER_MODULE_JS_CONSTRUCTORS; |
| 1162 | } |
| 1163 | return result; |
| 1164 | } |
| 1165 | |
| 1166 | |
| 1167 | void Logger::PauseProfiler(int flags) { |
| 1168 | if (!Log::IsEnabled()) return; |
| 1169 | const int active_modules = GetActiveProfilerModules(); |
| 1170 | const int modules_to_disable = active_modules & flags; |
| 1171 | if (modules_to_disable == PROFILER_MODULE_NONE) return; |
| 1172 | |
| 1173 | if (modules_to_disable & PROFILER_MODULE_CPU) { |
| 1174 | profiler_->pause(); |
| 1175 | if (FLAG_prof_lazy) { |
| 1176 | if (!FLAG_sliding_state_window) ticker_->Stop(); |
| 1177 | FLAG_log_code = false; |
| 1178 | // Must be the same message as Log::kDynamicBufferSeal. |
| 1179 | LOG(UncheckedStringEvent("profiler", "pause")); |
| 1180 | } |
| 1181 | } |
| 1182 | if (modules_to_disable & |
| 1183 | (PROFILER_MODULE_HEAP_STATS | PROFILER_MODULE_JS_CONSTRUCTORS)) { |
| 1184 | FLAG_log_gc = false; |
| 1185 | } |
| 1186 | // Turn off logging if no active modules remain. |
| 1187 | if ((active_modules & ~flags) == PROFILER_MODULE_NONE) { |
| 1188 | is_logging_ = false; |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | |
| 1193 | void Logger::ResumeProfiler(int flags) { |
| 1194 | if (!Log::IsEnabled()) return; |
| 1195 | const int modules_to_enable = ~GetActiveProfilerModules() & flags; |
| 1196 | if (modules_to_enable != PROFILER_MODULE_NONE) { |
| 1197 | is_logging_ = true; |
| 1198 | } |
| 1199 | if (modules_to_enable & PROFILER_MODULE_CPU) { |
| 1200 | if (FLAG_prof_lazy) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1201 | profiler_->Engage(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1202 | LOG(UncheckedStringEvent("profiler", "resume")); |
| 1203 | FLAG_log_code = true; |
| 1204 | LogCompiledFunctions(); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 1205 | LogFunctionObjects(); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1206 | LogAccessorCallbacks(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1207 | if (!FLAG_sliding_state_window) ticker_->Start(); |
| 1208 | } |
| 1209 | profiler_->resume(); |
| 1210 | } |
| 1211 | if (modules_to_enable & |
| 1212 | (PROFILER_MODULE_HEAP_STATS | PROFILER_MODULE_JS_CONSTRUCTORS)) { |
| 1213 | FLAG_log_gc = true; |
| 1214 | } |
| 1215 | } |
| 1216 | |
| 1217 | |
| 1218 | // This function can be called when Log's mutex is acquired, |
| 1219 | // either from main or Profiler's thread. |
| 1220 | void Logger::StopLoggingAndProfiling() { |
| 1221 | Log::stop(); |
| 1222 | PauseProfiler(PROFILER_MODULE_CPU); |
| 1223 | } |
| 1224 | |
| 1225 | |
| 1226 | bool Logger::IsProfilerSamplerActive() { |
| 1227 | return ticker_->IsActive(); |
| 1228 | } |
| 1229 | |
| 1230 | |
| 1231 | int Logger::GetLogLines(int from_pos, char* dest_buf, int max_size) { |
| 1232 | return Log::GetLogLines(from_pos, dest_buf, max_size); |
| 1233 | } |
| 1234 | |
| 1235 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1236 | static int EnumerateCompiledFunctions(Handle<SharedFunctionInfo>* sfis) { |
| 1237 | AssertNoAllocation no_alloc; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1238 | int compiled_funcs_count = 0; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1239 | HeapIterator iterator; |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 1240 | for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1241 | if (!obj->IsSharedFunctionInfo()) continue; |
| 1242 | SharedFunctionInfo* sfi = SharedFunctionInfo::cast(obj); |
| 1243 | if (sfi->is_compiled() |
| 1244 | && (!sfi->script()->IsScript() |
| 1245 | || Script::cast(sfi->script())->HasValidSource())) { |
| 1246 | if (sfis != NULL) |
| 1247 | sfis[compiled_funcs_count] = Handle<SharedFunctionInfo>(sfi); |
| 1248 | ++compiled_funcs_count; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1249 | } |
| 1250 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1251 | return compiled_funcs_count; |
| 1252 | } |
| 1253 | |
| 1254 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1255 | void Logger::LogCodeObject(Object* object) { |
| 1256 | if (FLAG_log_code) { |
| 1257 | Code* code_object = Code::cast(object); |
| 1258 | LogEventsAndTags tag = Logger::STUB_TAG; |
| 1259 | const char* description = "Unknown code from the snapshot"; |
| 1260 | switch (code_object->kind()) { |
| 1261 | case Code::FUNCTION: |
| 1262 | return; // We log this later using LogCompiledFunctions. |
| 1263 | case Code::STUB: |
| 1264 | description = CodeStub::MajorName(code_object->major_key()); |
| 1265 | tag = Logger::STUB_TAG; |
| 1266 | break; |
| 1267 | case Code::BUILTIN: |
| 1268 | description = "A builtin from the snapshot"; |
| 1269 | tag = Logger::BUILTIN_TAG; |
| 1270 | break; |
| 1271 | case Code::KEYED_LOAD_IC: |
| 1272 | description = "A keyed load IC from the snapshot"; |
| 1273 | tag = Logger::KEYED_LOAD_IC_TAG; |
| 1274 | break; |
| 1275 | case Code::LOAD_IC: |
| 1276 | description = "A load IC from the snapshot"; |
| 1277 | tag = Logger::LOAD_IC_TAG; |
| 1278 | break; |
| 1279 | case Code::STORE_IC: |
| 1280 | description = "A store IC from the snapshot"; |
| 1281 | tag = Logger::STORE_IC_TAG; |
| 1282 | break; |
| 1283 | case Code::KEYED_STORE_IC: |
| 1284 | description = "A keyed store IC from the snapshot"; |
| 1285 | tag = Logger::KEYED_STORE_IC_TAG; |
| 1286 | break; |
| 1287 | case Code::CALL_IC: |
| 1288 | description = "A call IC from the snapshot"; |
| 1289 | tag = Logger::CALL_IC_TAG; |
| 1290 | break; |
| 1291 | } |
| 1292 | LOG(CodeCreateEvent(tag, code_object, description)); |
| 1293 | } |
| 1294 | } |
| 1295 | |
| 1296 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1297 | void Logger::LogCompiledFunctions() { |
| 1298 | HandleScope scope; |
| 1299 | const int compiled_funcs_count = EnumerateCompiledFunctions(NULL); |
| 1300 | Handle<SharedFunctionInfo>* sfis = |
| 1301 | NewArray< Handle<SharedFunctionInfo> >(compiled_funcs_count); |
| 1302 | EnumerateCompiledFunctions(sfis); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1303 | |
| 1304 | // During iteration, there can be heap allocation due to |
| 1305 | // GetScriptLineNumber call. |
| 1306 | for (int i = 0; i < compiled_funcs_count; ++i) { |
| 1307 | Handle<SharedFunctionInfo> shared = sfis[i]; |
| 1308 | Handle<String> name(String::cast(shared->name())); |
| 1309 | Handle<String> func_name(name->length() > 0 ? |
| 1310 | *name : shared->inferred_name()); |
| 1311 | if (shared->script()->IsScript()) { |
| 1312 | Handle<Script> script(Script::cast(shared->script())); |
| 1313 | if (script->name()->IsString()) { |
| 1314 | Handle<String> script_name(String::cast(script->name())); |
| 1315 | int line_num = GetScriptLineNumber(script, shared->start_position()); |
| 1316 | if (line_num > 0) { |
| 1317 | LOG(CodeCreateEvent(Logger::LAZY_COMPILE_TAG, |
| 1318 | shared->code(), *func_name, |
| 1319 | *script_name, line_num + 1)); |
| 1320 | } else { |
| 1321 | // Can't distinguish enum and script here, so always use Script. |
| 1322 | LOG(CodeCreateEvent(Logger::SCRIPT_TAG, |
| 1323 | shared->code(), *script_name)); |
| 1324 | } |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1325 | } else { |
| 1326 | LOG(CodeCreateEvent( |
| 1327 | Logger::LAZY_COMPILE_TAG, shared->code(), *func_name)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1328 | } |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1329 | } else if (shared->function_data()->IsFunctionTemplateInfo()) { |
| 1330 | // API function. |
| 1331 | FunctionTemplateInfo* fun_data = |
| 1332 | FunctionTemplateInfo::cast(shared->function_data()); |
| 1333 | Object* raw_call_data = fun_data->call_code(); |
| 1334 | if (!raw_call_data->IsUndefined()) { |
| 1335 | CallHandlerInfo* call_data = CallHandlerInfo::cast(raw_call_data); |
| 1336 | Object* callback_obj = call_data->callback(); |
| 1337 | Address entry_point = v8::ToCData<Address>(callback_obj); |
| 1338 | LOG(CallbackEvent(*func_name, entry_point)); |
| 1339 | } |
| 1340 | } else { |
| 1341 | LOG(CodeCreateEvent( |
| 1342 | Logger::LAZY_COMPILE_TAG, shared->code(), *func_name)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1343 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1344 | } |
| 1345 | |
| 1346 | DeleteArray(sfis); |
| 1347 | } |
| 1348 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1349 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 1350 | void Logger::LogFunctionObjects() { |
| 1351 | AssertNoAllocation no_alloc; |
| 1352 | HeapIterator iterator; |
| 1353 | for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { |
| 1354 | if (!obj->IsJSFunction()) continue; |
| 1355 | JSFunction* jsf = JSFunction::cast(obj); |
| 1356 | if (!jsf->is_compiled()) continue; |
| 1357 | LOG(FunctionCreateEvent(jsf)); |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1362 | void Logger::LogAccessorCallbacks() { |
| 1363 | AssertNoAllocation no_alloc; |
| 1364 | HeapIterator iterator; |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame^] | 1365 | for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1366 | if (!obj->IsAccessorInfo()) continue; |
| 1367 | AccessorInfo* ai = AccessorInfo::cast(obj); |
| 1368 | if (!ai->name()->IsString()) continue; |
| 1369 | String* name = String::cast(ai->name()); |
| 1370 | Address getter_entry = v8::ToCData<Address>(ai->getter()); |
| 1371 | if (getter_entry != 0) { |
| 1372 | LOG(GetterCallbackEvent(name, getter_entry)); |
| 1373 | } |
| 1374 | Address setter_entry = v8::ToCData<Address>(ai->setter()); |
| 1375 | if (setter_entry != 0) { |
| 1376 | LOG(SetterCallbackEvent(name, setter_entry)); |
| 1377 | } |
| 1378 | } |
| 1379 | } |
| 1380 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1381 | #endif |
| 1382 | |
| 1383 | |
| 1384 | bool Logger::Setup() { |
| 1385 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1386 | // --log-all enables all the log flags. |
| 1387 | if (FLAG_log_all) { |
| 1388 | FLAG_log_runtime = true; |
| 1389 | FLAG_log_api = true; |
| 1390 | FLAG_log_code = true; |
| 1391 | FLAG_log_gc = true; |
| 1392 | FLAG_log_suspect = true; |
| 1393 | FLAG_log_handles = true; |
| 1394 | FLAG_log_regexp = true; |
| 1395 | } |
| 1396 | |
| 1397 | // --prof implies --log-code. |
| 1398 | if (FLAG_prof) FLAG_log_code = true; |
| 1399 | |
| 1400 | // --prof_lazy controls --log-code, implies --noprof_auto. |
| 1401 | if (FLAG_prof_lazy) { |
| 1402 | FLAG_log_code = false; |
| 1403 | FLAG_prof_auto = false; |
| 1404 | } |
| 1405 | |
| 1406 | bool start_logging = FLAG_log || FLAG_log_runtime || FLAG_log_api |
| 1407 | || FLAG_log_code || FLAG_log_gc || FLAG_log_handles || FLAG_log_suspect |
| 1408 | || FLAG_log_regexp || FLAG_log_state_changes; |
| 1409 | |
| 1410 | bool open_log_file = start_logging || FLAG_prof_lazy; |
| 1411 | |
| 1412 | // If we're logging anything, we need to open the log file. |
| 1413 | if (open_log_file) { |
| 1414 | if (strcmp(FLAG_logfile, "-") == 0) { |
| 1415 | Log::OpenStdout(); |
| 1416 | } else if (strcmp(FLAG_logfile, "*") == 0) { |
| 1417 | Log::OpenMemoryBuffer(); |
| 1418 | } else if (strchr(FLAG_logfile, '%') != NULL) { |
| 1419 | // If there's a '%' in the log file name we have to expand |
| 1420 | // placeholders. |
| 1421 | HeapStringAllocator allocator; |
| 1422 | StringStream stream(&allocator); |
| 1423 | for (const char* p = FLAG_logfile; *p; p++) { |
| 1424 | if (*p == '%') { |
| 1425 | p++; |
| 1426 | switch (*p) { |
| 1427 | case '\0': |
| 1428 | // If there's a % at the end of the string we back up |
| 1429 | // one character so we can escape the loop properly. |
| 1430 | p--; |
| 1431 | break; |
| 1432 | case 't': { |
| 1433 | // %t expands to the current time in milliseconds. |
| 1434 | double time = OS::TimeCurrentMillis(); |
| 1435 | stream.Add("%.0f", FmtElm(time)); |
| 1436 | break; |
| 1437 | } |
| 1438 | case '%': |
| 1439 | // %% expands (contracts really) to %. |
| 1440 | stream.Put('%'); |
| 1441 | break; |
| 1442 | default: |
| 1443 | // All other %'s expand to themselves. |
| 1444 | stream.Put('%'); |
| 1445 | stream.Put(*p); |
| 1446 | break; |
| 1447 | } |
| 1448 | } else { |
| 1449 | stream.Put(*p); |
| 1450 | } |
| 1451 | } |
| 1452 | SmartPointer<const char> expanded = stream.ToCString(); |
| 1453 | Log::OpenFile(*expanded); |
| 1454 | } else { |
| 1455 | Log::OpenFile(FLAG_logfile); |
| 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | current_state_ = &bottom_state_; |
| 1460 | |
| 1461 | ticker_ = new Ticker(kSamplingIntervalMs); |
| 1462 | |
| 1463 | if (FLAG_sliding_state_window && sliding_state_window_ == NULL) { |
| 1464 | sliding_state_window_ = new SlidingStateWindow(); |
| 1465 | } |
| 1466 | |
| 1467 | log_events_ = FLAG_compress_log ? |
| 1468 | kCompressedLogEventsNames : kLongLogEventsNames; |
| 1469 | if (FLAG_compress_log) { |
| 1470 | compression_helper_ = new CompressionHelper(kCompressionWindowSize); |
| 1471 | } |
| 1472 | |
| 1473 | is_logging_ = start_logging; |
| 1474 | |
| 1475 | if (FLAG_prof) { |
| 1476 | profiler_ = new Profiler(); |
| 1477 | if (!FLAG_prof_auto) { |
| 1478 | profiler_->pause(); |
| 1479 | } else { |
| 1480 | is_logging_ = true; |
| 1481 | } |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1482 | if (!FLAG_prof_lazy) { |
| 1483 | profiler_->Engage(); |
| 1484 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1485 | } |
| 1486 | |
| 1487 | LogMessageBuilder::set_write_failure_handler(StopLoggingAndProfiling); |
| 1488 | |
| 1489 | return true; |
| 1490 | |
| 1491 | #else |
| 1492 | return false; |
| 1493 | #endif |
| 1494 | } |
| 1495 | |
| 1496 | |
| 1497 | void Logger::TearDown() { |
| 1498 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1499 | LogMessageBuilder::set_write_failure_handler(NULL); |
| 1500 | |
| 1501 | // Stop the profiler before closing the file. |
| 1502 | if (profiler_ != NULL) { |
| 1503 | profiler_->Disengage(); |
| 1504 | delete profiler_; |
| 1505 | profiler_ = NULL; |
| 1506 | } |
| 1507 | |
| 1508 | delete compression_helper_; |
| 1509 | compression_helper_ = NULL; |
| 1510 | |
| 1511 | delete sliding_state_window_; |
| 1512 | sliding_state_window_ = NULL; |
| 1513 | |
| 1514 | delete ticker_; |
| 1515 | ticker_ = NULL; |
| 1516 | |
| 1517 | Log::Close(); |
| 1518 | #endif |
| 1519 | } |
| 1520 | |
| 1521 | |
| 1522 | void Logger::EnableSlidingStateWindow() { |
| 1523 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 1524 | // If the ticker is NULL, Logger::Setup has not been called yet. In |
| 1525 | // that case, we set the sliding_state_window flag so that the |
| 1526 | // sliding window computation will be started when Logger::Setup is |
| 1527 | // called. |
| 1528 | if (ticker_ == NULL) { |
| 1529 | FLAG_sliding_state_window = true; |
| 1530 | return; |
| 1531 | } |
| 1532 | // Otherwise, if the sliding state window computation has not been |
| 1533 | // started we do it now. |
| 1534 | if (sliding_state_window_ == NULL) { |
| 1535 | sliding_state_window_ = new SlidingStateWindow(); |
| 1536 | } |
| 1537 | #endif |
| 1538 | } |
| 1539 | |
| 1540 | |
| 1541 | } } // namespace v8::internal |