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