// Copyright 2011 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include <stdarg.h> #include "v8.h" #include "bootstrapper.h" #include "code-stubs.h" #include "cpu-profiler.h" #include "deoptimizer.h" #include "global-handles.h" #include "log.h" #include "log-utils.h" #include "macro-assembler.h" #include "platform.h" #include "runtime-profiler.h" #include "serialize.h" #include "string-stream.h" #include "vm-state-inl.h" namespace v8 { namespace internal { #define DECLARE_EVENT(ignore1, name) name, static const char* const kLogEventsNames[Logger::NUMBER_OF_LOG_EVENTS] = { LOG_EVENTS_AND_TAGS_LIST(DECLARE_EVENT) }; #undef DECLARE_EVENT #define CALL_LISTENERS(Call) \ for (int i = 0; i < listeners_.length(); ++i) { \ listeners_[i]->Call; \ } #define PROFILER_LOG(Call) \ do { \ CpuProfiler* cpu_profiler = isolate_->cpu_profiler(); \ if (cpu_profiler->is_profiling()) { \ cpu_profiler->Call; \ } \ } while (false); // ComputeMarker must only be used when SharedFunctionInfo is known. static const char* ComputeMarker(Code* code) { switch (code->kind()) { case Code::FUNCTION: return code->optimizable() ? "~" : ""; case Code::OPTIMIZED_FUNCTION: return "*"; default: return ""; } } class CodeEventLogger::NameBuffer { public: NameBuffer() { Reset(); } void Reset() { utf8_pos_ = 0; } void Init(Logger::LogEventsAndTags tag) { Reset(); AppendBytes(kLogEventsNames[tag]); AppendByte(':'); } void AppendName(Name* name) { if (name->IsString()) { AppendString(String::cast(name)); } else { Symbol* symbol = Symbol::cast(name); AppendBytes("symbol("); if (!symbol->name()->IsUndefined()) { AppendBytes("\""); AppendString(String::cast(symbol->name())); AppendBytes("\" "); } AppendBytes("hash "); AppendHex(symbol->Hash()); AppendByte(')'); } } void AppendString(String* str) { if (str == NULL) return; int uc16_length = Min(str->length(), kUtf16BufferSize); String::WriteToFlat(str, utf16_buffer, 0, uc16_length); int previous = unibrow::Utf16::kNoPreviousCharacter; for (int i = 0; i < uc16_length && utf8_pos_ < kUtf8BufferSize; ++i) { uc16 c = utf16_buffer[i]; if (c <= unibrow::Utf8::kMaxOneByteChar) { utf8_buffer_[utf8_pos_++] = static_cast<char>(c); } else { int char_length = unibrow::Utf8::Length(c, previous); if (utf8_pos_ + char_length > kUtf8BufferSize) break; unibrow::Utf8::Encode(utf8_buffer_ + utf8_pos_, c, previous); utf8_pos_ += char_length; } previous = c; } } void AppendBytes(const char* bytes, int size) { size = Min(size, kUtf8BufferSize - utf8_pos_); OS::MemCopy(utf8_buffer_ + utf8_pos_, bytes, size); utf8_pos_ += size; } void AppendBytes(const char* bytes) { AppendBytes(bytes, StrLength(bytes)); } void AppendByte(char c) { if (utf8_pos_ >= kUtf8BufferSize) return; utf8_buffer_[utf8_pos_++] = c; } void AppendInt(int n) { Vector<char> buffer(utf8_buffer_ + utf8_pos_, kUtf8BufferSize - utf8_pos_); int size = OS::SNPrintF(buffer, "%d", n); if (size > 0 && utf8_pos_ + size <= kUtf8BufferSize) { utf8_pos_ += size; } } void AppendHex(uint32_t n) { Vector<char> buffer(utf8_buffer_ + utf8_pos_, kUtf8BufferSize - utf8_pos_); int size = OS::SNPrintF(buffer, "%x", n); if (size > 0 && utf8_pos_ + size <= kUtf8BufferSize) { utf8_pos_ += size; } } const char* get() { return utf8_buffer_; } int size() const { return utf8_pos_; } private: static const int kUtf8BufferSize = 512; static const int kUtf16BufferSize = 128; int utf8_pos_; char utf8_buffer_[kUtf8BufferSize]; uc16 utf16_buffer[kUtf16BufferSize]; }; CodeEventLogger::CodeEventLogger() : name_buffer_(new NameBuffer) { } CodeEventLogger::~CodeEventLogger() { delete name_buffer_; } void CodeEventLogger::CodeCreateEvent(Logger::LogEventsAndTags tag, Code* code, const char* comment) { name_buffer_->Init(tag); name_buffer_->AppendBytes(comment); LogRecordedBuffer(code, NULL, name_buffer_->get(), name_buffer_->size()); } void CodeEventLogger::CodeCreateEvent(Logger::LogEventsAndTags tag, Code* code, Name* name) { name_buffer_->Init(tag); name_buffer_->AppendName(name); LogRecordedBuffer(code, NULL, name_buffer_->get(), name_buffer_->size()); } void CodeEventLogger::CodeCreateEvent(Logger::LogEventsAndTags tag, Code* code, SharedFunctionInfo* shared, CompilationInfo* info, Name* name) { name_buffer_->Init(tag); name_buffer_->AppendBytes(ComputeMarker(code)); name_buffer_->AppendName(name); LogRecordedBuffer(code, shared, name_buffer_->get(), name_buffer_->size()); } void CodeEventLogger::CodeCreateEvent(Logger::LogEventsAndTags tag, Code* code, SharedFunctionInfo* shared, CompilationInfo* info, Name* source, int line) { name_buffer_->Init(tag); name_buffer_->AppendBytes(ComputeMarker(code)); name_buffer_->AppendString(shared->DebugName()); name_buffer_->AppendByte(' '); if (source->IsString()) { name_buffer_->AppendString(String::cast(source)); } else { name_buffer_->AppendBytes("symbol(hash "); name_buffer_->AppendHex(Name::cast(source)->Hash()); name_buffer_->AppendByte(')'); } name_buffer_->AppendByte(':'); name_buffer_->AppendInt(line); LogRecordedBuffer(code, shared, name_buffer_->get(), name_buffer_->size()); } void CodeEventLogger::CodeCreateEvent(Logger::LogEventsAndTags tag, Code* code, int args_count) { name_buffer_->Init(tag); name_buffer_->AppendInt(args_count); LogRecordedBuffer(code, NULL, name_buffer_->get(), name_buffer_->size()); } void CodeEventLogger::RegExpCodeCreateEvent(Code* code, String* source) { name_buffer_->Init(Logger::REG_EXP_TAG); name_buffer_->AppendString(source); LogRecordedBuffer(code, NULL, name_buffer_->get(), name_buffer_->size()); } // Low-level logging support. #define LL_LOG(Call) if (ll_logger_) ll_logger_->Call; class LowLevelLogger : public CodeEventLogger { public: explicit LowLevelLogger(const char* file_name); virtual ~LowLevelLogger(); virtual void CodeMoveEvent(Address from, Address to); virtual void CodeDeleteEvent(Address from); virtual void SnapshotPositionEvent(Address addr, int pos); virtual void CodeMovingGCEvent(); private: virtual void LogRecordedBuffer(Code* code, SharedFunctionInfo* shared, const char* name, int length); // Low-level profiling event structures. struct CodeCreateStruct { static const char kTag = 'C'; int32_t name_size; Address code_address; int32_t code_size; }; struct CodeMoveStruct { static const char kTag = 'M'; Address from_address; Address to_address; }; struct CodeDeleteStruct { static const char kTag = 'D'; Address address; }; struct SnapshotPositionStruct { static const char kTag = 'P'; Address address; int32_t position; }; static const char kCodeMovingGCTag = 'G'; // Extension added to V8 log file name to get the low-level log name. static const char kLogExt[]; // File buffer size of the low-level log. We don't use the default to // minimize the associated overhead. static const int kLogBufferSize = 2 * MB; void LogCodeInfo(); void LogWriteBytes(const char* bytes, int size); template <typename T> void LogWriteStruct(const T& s) { char tag = T::kTag; LogWriteBytes(reinterpret_cast<const char*>(&tag), sizeof(tag)); LogWriteBytes(reinterpret_cast<const char*>(&s), sizeof(s)); } FILE* ll_output_handle_; }; const char LowLevelLogger::kLogExt[] = ".ll"; LowLevelLogger::LowLevelLogger(const char* name) : ll_output_handle_(NULL) { // Open the low-level log file. size_t len = strlen(name); ScopedVector<char> ll_name(static_cast<int>(len + sizeof(kLogExt))); OS::MemCopy(ll_name.start(), name, len); OS::MemCopy(ll_name.start() + len, kLogExt, sizeof(kLogExt)); ll_output_handle_ = OS::FOpen(ll_name.start(), OS::LogFileOpenMode); setvbuf(ll_output_handle_, NULL, _IOFBF, kLogBufferSize); LogCodeInfo(); } LowLevelLogger::~LowLevelLogger() { fclose(ll_output_handle_); ll_output_handle_ = NULL; } void LowLevelLogger::LogCodeInfo() { #if V8_TARGET_ARCH_IA32 const char arch[] = "ia32"; #elif V8_TARGET_ARCH_X64 const char arch[] = "x64"; #elif V8_TARGET_ARCH_ARM const char arch[] = "arm"; #elif V8_TARGET_ARCH_MIPS const char arch[] = "mips"; #else const char arch[] = "unknown"; #endif LogWriteBytes(arch, sizeof(arch)); } void LowLevelLogger::LogRecordedBuffer(Code* code, SharedFunctionInfo*, const char* name, int length) { CodeCreateStruct event; event.name_size = length; event.code_address = code->instruction_start(); ASSERT(event.code_address == code->address() + Code::kHeaderSize); event.code_size = code->instruction_size(); LogWriteStruct(event); LogWriteBytes(name, length); LogWriteBytes( reinterpret_cast<const char*>(code->instruction_start()), code->instruction_size()); } void LowLevelLogger::CodeMoveEvent(Address from, Address to) { CodeMoveStruct event; event.from_address = from + Code::kHeaderSize; event.to_address = to + Code::kHeaderSize; LogWriteStruct(event); } void LowLevelLogger::CodeDeleteEvent(Address from) { CodeDeleteStruct event; event.address = from + Code::kHeaderSize; LogWriteStruct(event); } void LowLevelLogger::SnapshotPositionEvent(Address addr, int pos) { SnapshotPositionStruct event; event.address = addr + Code::kHeaderSize; event.position = pos; LogWriteStruct(event); } void LowLevelLogger::LogWriteBytes(const char* bytes, int size) { size_t rv = fwrite(bytes, 1, size, ll_output_handle_); ASSERT(static_cast<size_t>(size) == rv); USE(rv); } void LowLevelLogger::CodeMovingGCEvent() { const char tag = kCodeMovingGCTag; LogWriteBytes(&tag, sizeof(tag)); } #define JIT_LOG(Call) if (jit_logger_) jit_logger_->Call; class JitLogger : public CodeEventLogger { public: explicit JitLogger(JitCodeEventHandler code_event_handler); virtual void CodeMoveEvent(Address from, Address to); virtual void CodeDeleteEvent(Address from); virtual void AddCodeLinePosInfoEvent( void* jit_handler_data, int pc_offset, int position, JitCodeEvent::PositionType position_type); void* StartCodePosInfoEvent(); void EndCodePosInfoEvent(Code* code, void* jit_handler_data); private: virtual void LogRecordedBuffer(Code* code, SharedFunctionInfo* shared, const char* name, int length); JitCodeEventHandler code_event_handler_; }; JitLogger::JitLogger(JitCodeEventHandler code_event_handler) : code_event_handler_(code_event_handler) { } void JitLogger::LogRecordedBuffer(Code* code, SharedFunctionInfo* shared, const char* name, int length) { JitCodeEvent event; memset(&event, 0, sizeof(event)); event.type = JitCodeEvent::CODE_ADDED; event.code_start = code->instruction_start(); event.code_len = code->instruction_size(); Handle<Script> script_handle; if (shared && shared->script()->IsScript()) { script_handle = Handle<Script>(Script::cast(shared->script())); } event.script = ToApiHandle<v8::Script>(script_handle); event.name.str = name; event.name.len = length; code_event_handler_(&event); } void JitLogger::CodeMoveEvent(Address from, Address to) { Code* from_code = Code::cast(HeapObject::FromAddress(from)); JitCodeEvent event; event.type = JitCodeEvent::CODE_MOVED; event.code_start = from_code->instruction_start(); event.code_len = from_code->instruction_size(); // Calculate the header size. const size_t header_size = from_code->instruction_start() - reinterpret_cast<byte*>(from_code); // Calculate the new start address of the instructions. event.new_code_start = reinterpret_cast<byte*>(HeapObject::FromAddress(to)) + header_size; code_event_handler_(&event); } void JitLogger::CodeDeleteEvent(Address from) { Code* from_code = Code::cast(HeapObject::FromAddress(from)); JitCodeEvent event; event.type = JitCodeEvent::CODE_REMOVED; event.code_start = from_code->instruction_start(); event.code_len = from_code->instruction_size(); code_event_handler_(&event); } void JitLogger::AddCodeLinePosInfoEvent( void* jit_handler_data, int pc_offset, int position, JitCodeEvent::PositionType position_type) { JitCodeEvent event; memset(&event, 0, sizeof(event)); event.type = JitCodeEvent::CODE_ADD_LINE_POS_INFO; event.user_data = jit_handler_data; event.line_info.offset = pc_offset; event.line_info.pos = position; event.line_info.position_type = position_type; code_event_handler_(&event); } void* JitLogger::StartCodePosInfoEvent() { JitCodeEvent event; memset(&event, 0, sizeof(event)); event.type = JitCodeEvent::CODE_START_LINE_INFO_RECORDING; code_event_handler_(&event); return event.user_data; } void JitLogger::EndCodePosInfoEvent(Code* code, void* jit_handler_data) { JitCodeEvent event; memset(&event, 0, sizeof(event)); event.type = JitCodeEvent::CODE_END_LINE_INFO_RECORDING; event.code_start = code->instruction_start(); event.user_data = jit_handler_data; code_event_handler_(&event); } // The Profiler samples pc and sp values for the main thread. // Each sample is appended to a circular buffer. // An independent thread removes data and writes it to the log. // This design minimizes the time spent in the sampler. // class Profiler: public Thread { public: explicit Profiler(Isolate* isolate); void Engage(); void Disengage(); // Inserts collected profiling data into buffer. void Insert(TickSample* sample) { if (paused_) return; if (Succ(head_) == tail_) { overflow_ = true; } else { buffer_[head_] = *sample; head_ = Succ(head_); buffer_semaphore_->Signal(); // Tell we have an element. } } // Waits for a signal and removes profiling data. bool Remove(TickSample* sample) { buffer_semaphore_->Wait(); // Wait for an element. *sample = buffer_[tail_]; bool result = overflow_; tail_ = Succ(tail_); overflow_ = false; return result; } void Run(); // Pause and Resume TickSample data collection. bool paused() const { return paused_; } void pause() { paused_ = true; } void resume() { paused_ = false; } private: // Returns the next index in the cyclic buffer. int Succ(int index) { return (index + 1) % kBufferSize; } Isolate* isolate_; // Cyclic buffer for communicating profiling samples // between the signal handler and the worker thread. static const int kBufferSize = 128; TickSample buffer_[kBufferSize]; // Buffer storage. int head_; // Index to the buffer head. int tail_; // Index to the buffer tail. bool overflow_; // Tell whether a buffer overflow has occurred. Semaphore* buffer_semaphore_; // Sempahore used for buffer synchronization. // Tells whether profiler is engaged, that is, processing thread is stated. bool engaged_; // Tells whether worker thread should continue running. bool running_; // Tells whether we are currently recording tick samples. bool paused_; }; // // Ticker used to provide ticks to the profiler and the sliding state // window. // class Ticker: public Sampler { public: Ticker(Isolate* isolate, int interval): Sampler(isolate, interval), profiler_(NULL) {} ~Ticker() { if (IsActive()) Stop(); } virtual void Tick(TickSample* sample) { if (profiler_) profiler_->Insert(sample); } void SetProfiler(Profiler* profiler) { ASSERT(profiler_ == NULL); profiler_ = profiler; IncreaseProfilingDepth(); if (!FLAG_prof_lazy && !IsActive()) Start(); } void ClearProfiler() { DecreaseProfilingDepth(); profiler_ = NULL; if (IsActive()) Stop(); } private: Profiler* profiler_; }; // // Profiler implementation. // Profiler::Profiler(Isolate* isolate) : Thread("v8:Profiler"), isolate_(isolate), head_(0), tail_(0), overflow_(false), buffer_semaphore_(OS::CreateSemaphore(0)), engaged_(false), running_(false), paused_(false) { } void Profiler::Engage() { if (engaged_) return; engaged_ = true; OS::LogSharedLibraryAddresses(); // Start thread processing the profiler buffer. running_ = true; Start(); // Register to get ticks. Logger* logger = isolate_->logger(); logger->ticker_->SetProfiler(this); logger->ProfilerBeginEvent(); } void Profiler::Disengage() { if (!engaged_) return; // Stop receiving ticks. isolate_->logger()->ticker_->ClearProfiler(); // Terminate the worker thread by setting running_ to false, // inserting a fake element in the queue and then wait for // the thread to terminate. running_ = false; TickSample sample; // Reset 'paused_' flag, otherwise semaphore may not be signalled. resume(); Insert(&sample); Join(); LOG(ISOLATE, UncheckedStringEvent("profiler", "end")); } void Profiler::Run() { TickSample sample; bool overflow = Remove(&sample); while (running_) { LOG(isolate_, TickEvent(&sample, overflow)); overflow = Remove(&sample); } } // // Logger class implementation. // Logger::Logger(Isolate* isolate) : isolate_(isolate), ticker_(NULL), profiler_(NULL), log_events_(NULL), logging_nesting_(0), cpu_profiler_nesting_(0), log_(new Log(this)), ll_logger_(NULL), jit_logger_(NULL), listeners_(5), is_initialized_(false), epoch_(0) { } Logger::~Logger() { delete log_; } void Logger::addCodeEventListener(CodeEventListener* listener) { ASSERT(!hasCodeEventListener(listener)); listeners_.Add(listener); } void Logger::removeCodeEventListener(CodeEventListener* listener) { ASSERT(hasCodeEventListener(listener)); listeners_.RemoveElement(listener); } bool Logger::hasCodeEventListener(CodeEventListener* listener) { return listeners_.Contains(listener); } void Logger::ProfilerBeginEvent() { if (!log_->IsEnabled()) return; Log::MessageBuilder msg(log_); msg.Append("profiler,\"begin\",%d\n", kSamplingIntervalMs); msg.WriteToLogFile(); } void Logger::StringEvent(const char* name, const char* value) { if (FLAG_log) UncheckedStringEvent(name, value); } void Logger::UncheckedStringEvent(const char* name, const char* value) { if (!log_->IsEnabled()) return; Log::MessageBuilder msg(log_); msg.Append("%s,\"%s\"\n", name, value); msg.WriteToLogFile(); } void Logger::IntEvent(const char* name, int value) { if (FLAG_log) UncheckedIntEvent(name, value); } void Logger::IntPtrTEvent(const char* name, intptr_t value) { if (FLAG_log) UncheckedIntPtrTEvent(name, value); } void Logger::UncheckedIntEvent(const char* name, int value) { if (!log_->IsEnabled()) return; Log::MessageBuilder msg(log_); msg.Append("%s,%d\n", name, value); msg.WriteToLogFile(); } void Logger::UncheckedIntPtrTEvent(const char* name, intptr_t value) { if (!log_->IsEnabled()) return; Log::MessageBuilder msg(log_); msg.Append("%s,%" V8_PTR_PREFIX "d\n", name, value); msg.WriteToLogFile(); } void Logger::HandleEvent(const char* name, Object** location) { if (!log_->IsEnabled() || !FLAG_log_handles) return; Log::MessageBuilder msg(log_); msg.Append("%s,0x%" V8PRIxPTR "\n", name, location); msg.WriteToLogFile(); } // ApiEvent is private so all the calls come from the Logger class. It is the // caller's responsibility to ensure that log is enabled and that // FLAG_log_api is true. void Logger::ApiEvent(const char* format, ...) { ASSERT(log_->IsEnabled() && FLAG_log_api); Log::MessageBuilder msg(log_); va_list ap; va_start(ap, format); msg.AppendVA(format, ap); va_end(ap); msg.WriteToLogFile(); } void Logger::ApiNamedSecurityCheck(Object* key) { if (!log_->IsEnabled() || !FLAG_log_api) return; if (key->IsString()) { SmartArrayPointer<char> str = String::cast(key)->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); ApiEvent("api,check-security,\"%s\"\n", *str); } else if (key->IsSymbol()) { Symbol* symbol = Symbol::cast(key); if (symbol->name()->IsUndefined()) { ApiEvent("api,check-security,symbol(hash %x)\n", Symbol::cast(key)->Hash()); } else { SmartArrayPointer<char> str = String::cast(symbol->name())->ToCString( DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); ApiEvent("api,check-security,symbol(\"%s\" hash %x)\n", *str, Symbol::cast(key)->Hash()); } } else if (key->IsUndefined()) { ApiEvent("api,check-security,undefined\n"); } else { ApiEvent("api,check-security,['no-name']\n"); } } void Logger::SharedLibraryEvent(const char* library_path, uintptr_t start, uintptr_t end) { if (!log_->IsEnabled() || !FLAG_prof) return; Log::MessageBuilder msg(log_); msg.Append("shared-library,\"%s\",0x%08" V8PRIxPTR ",0x%08" V8PRIxPTR "\n", library_path, start, end); msg.WriteToLogFile(); } void Logger::SharedLibraryEvent(const wchar_t* library_path, uintptr_t start, uintptr_t end) { if (!log_->IsEnabled() || !FLAG_prof) return; Log::MessageBuilder msg(log_); msg.Append("shared-library,\"%ls\",0x%08" V8PRIxPTR ",0x%08" V8PRIxPTR "\n", library_path, start, end); msg.WriteToLogFile(); } void Logger::CodeDeoptEvent(Code* code) { if (!log_->IsEnabled()) return; ASSERT(FLAG_log_internal_timer_events); Log::MessageBuilder msg(log_); int since_epoch = static_cast<int>(OS::Ticks() - epoch_); msg.Append("code-deopt,%ld,%d\n", since_epoch, code->CodeSize()); msg.WriteToLogFile(); } void Logger::TimerEvent(StartEnd se, const char* name) { if (!log_->IsEnabled()) return; ASSERT(FLAG_log_internal_timer_events); Log::MessageBuilder msg(log_); int since_epoch = static_cast<int>(OS::Ticks() - epoch_); const char* format = (se == START) ? "timer-event-start,\"%s\",%ld\n" : "timer-event-end,\"%s\",%ld\n"; msg.Append(format, name, since_epoch); msg.WriteToLogFile(); } void Logger::EnterExternal(Isolate* isolate) { LOG(isolate, TimerEvent(START, TimerEventScope::v8_external)); ASSERT(isolate->current_vm_state() == JS); isolate->set_current_vm_state(EXTERNAL); } void Logger::LeaveExternal(Isolate* isolate) { LOG(isolate, TimerEvent(END, TimerEventScope::v8_external)); ASSERT(isolate->current_vm_state() == EXTERNAL); isolate->set_current_vm_state(JS); } void Logger::TimerEventScope::LogTimerEvent(StartEnd se) { LOG(isolate_, TimerEvent(se, name_)); } const char* Logger::TimerEventScope::v8_recompile_synchronous = "V8.RecompileSynchronous"; const char* Logger::TimerEventScope::v8_recompile_parallel = "V8.RecompileParallel"; const char* Logger::TimerEventScope::v8_compile_full_code = "V8.CompileFullCode"; const char* Logger::TimerEventScope::v8_execute = "V8.Execute"; const char* Logger::TimerEventScope::v8_external = "V8.External"; void Logger::LogRegExpSource(Handle<JSRegExp> regexp) { // Prints "/" + re.source + "/" + // (re.global?"g":"") + (re.ignorecase?"i":"") + (re.multiline?"m":"") Log::MessageBuilder msg(log_); Handle<Object> source = GetProperty(regexp, "source"); if (!source->IsString()) { msg.Append("no source"); return; } switch (regexp->TypeTag()) { case JSRegExp::ATOM: msg.Append('a'); break; default: break; } msg.Append('/'); msg.AppendDetailed(*Handle<String>::cast(source), false); msg.Append('/'); // global flag Handle<Object> global = GetProperty(regexp, "global"); if (global->IsTrue()) { msg.Append('g'); } // ignorecase flag Handle<Object> ignorecase = GetProperty(regexp, "ignoreCase"); if (ignorecase->IsTrue()) { msg.Append('i'); } // multiline flag Handle<Object> multiline = GetProperty(regexp, "multiline"); if (multiline->IsTrue()) { msg.Append('m'); } msg.WriteToLogFile(); } void Logger::RegExpCompileEvent(Handle<JSRegExp> regexp, bool in_cache) { if (!log_->IsEnabled() || !FLAG_log_regexp) return; Log::MessageBuilder msg(log_); msg.Append("regexp-compile,"); LogRegExpSource(regexp); msg.Append(in_cache ? ",hit\n" : ",miss\n"); msg.WriteToLogFile(); } void Logger::LogRuntime(Vector<const char> format, JSArray* args) { if (!log_->IsEnabled() || !FLAG_log_runtime) return; HandleScope scope(isolate_); Log::MessageBuilder msg(log_); for (int i = 0; i < format.length(); i++) { char c = format[i]; if (c == '%' && i <= format.length() - 2) { i++; ASSERT('0' <= format[i] && format[i] <= '9'); MaybeObject* maybe = args->GetElement(format[i] - '0'); Object* obj; if (!maybe->ToObject(&obj)) { msg.Append("<exception>"); continue; } i++; switch (format[i]) { case 's': msg.AppendDetailed(String::cast(obj), false); break; case 'S': msg.AppendDetailed(String::cast(obj), true); break; case 'r': Logger::LogRegExpSource(Handle<JSRegExp>(JSRegExp::cast(obj))); break; case 'x': msg.Append("0x%x", Smi::cast(obj)->value()); break; case 'i': msg.Append("%i", Smi::cast(obj)->value()); break; default: UNREACHABLE(); } } else { msg.Append(c); } } msg.Append('\n'); msg.WriteToLogFile(); } void Logger::ApiIndexedSecurityCheck(uint32_t index) { if (!log_->IsEnabled() || !FLAG_log_api) return; ApiEvent("api,check-security,%u\n", index); } void Logger::ApiNamedPropertyAccess(const char* tag, JSObject* holder, Object* name) { ASSERT(name->IsName()); if (!log_->IsEnabled() || !FLAG_log_api) return; String* class_name_obj = holder->class_name(); SmartArrayPointer<char> class_name = class_name_obj->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); if (name->IsString()) { SmartArrayPointer<char> property_name = String::cast(name)->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); ApiEvent("api,%s,\"%s\",\"%s\"\n", tag, *class_name, *property_name); } else { Symbol* symbol = Symbol::cast(name); uint32_t hash = symbol->Hash(); if (symbol->name()->IsUndefined()) { ApiEvent("api,%s,\"%s\",symbol(hash %x)\n", tag, *class_name, hash); } else { SmartArrayPointer<char> str = String::cast(symbol->name())->ToCString( DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); ApiEvent("api,%s,\"%s\",symbol(\"%s\" hash %x)\n", tag, *class_name, *str, hash); } } } void Logger::ApiIndexedPropertyAccess(const char* tag, JSObject* holder, uint32_t index) { if (!log_->IsEnabled() || !FLAG_log_api) return; String* class_name_obj = holder->class_name(); SmartArrayPointer<char> class_name = class_name_obj->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); ApiEvent("api,%s,\"%s\",%u\n", tag, *class_name, index); } void Logger::ApiObjectAccess(const char* tag, JSObject* object) { if (!log_->IsEnabled() || !FLAG_log_api) return; String* class_name_obj = object->class_name(); SmartArrayPointer<char> class_name = class_name_obj->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); ApiEvent("api,%s,\"%s\"\n", tag, *class_name); } void Logger::ApiEntryCall(const char* name) { if (!log_->IsEnabled() || !FLAG_log_api) return; ApiEvent("api,%s\n", name); } void Logger::NewEvent(const char* name, void* object, size_t size) { if (!log_->IsEnabled() || !FLAG_log) return; Log::MessageBuilder msg(log_); msg.Append("new,%s,0x%" V8PRIxPTR ",%u\n", name, object, static_cast<unsigned int>(size)); msg.WriteToLogFile(); } void Logger::DeleteEvent(const char* name, void* object) { if (!log_->IsEnabled() || !FLAG_log) return; Log::MessageBuilder msg(log_); msg.Append("delete,%s,0x%" V8PRIxPTR "\n", name, object); msg.WriteToLogFile(); } void Logger::NewEventStatic(const char* name, void* object, size_t size) { Isolate::Current()->logger()->NewEvent(name, object, size); } void Logger::DeleteEventStatic(const char* name, void* object) { Isolate::Current()->logger()->DeleteEvent(name, object); } void Logger::CallbackEventInternal(const char* prefix, Name* name, Address entry_point) { if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); msg.Append("%s,%s,-2,", kLogEventsNames[CODE_CREATION_EVENT], kLogEventsNames[CALLBACK_TAG]); msg.AppendAddress(entry_point); if (name->IsString()) { SmartArrayPointer<char> str = String::cast(name)->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); msg.Append(",1,\"%s%s\"", prefix, *str); } else { Symbol* symbol = Symbol::cast(name); if (symbol->name()->IsUndefined()) { msg.Append(",1,symbol(hash %x)", prefix, symbol->Hash()); } else { SmartArrayPointer<char> str = String::cast(symbol->name())->ToCString( DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); msg.Append(",1,symbol(\"%s\" hash %x)", prefix, *str, symbol->Hash()); } } msg.Append('\n'); msg.WriteToLogFile(); } void Logger::CallbackEvent(Name* name, Address entry_point) { PROFILER_LOG(CallbackEvent(name, entry_point)); CallbackEventInternal("", name, entry_point); } void Logger::GetterCallbackEvent(Name* name, Address entry_point) { PROFILER_LOG(GetterCallbackEvent(name, entry_point)); CallbackEventInternal("get ", name, entry_point); } void Logger::SetterCallbackEvent(Name* name, Address entry_point) { PROFILER_LOG(SetterCallbackEvent(name, entry_point)); CallbackEventInternal("set ", name, entry_point); } static void AppendCodeCreateHeader(Log::MessageBuilder* msg, Logger::LogEventsAndTags tag, Code* code) { ASSERT(msg); msg->Append("%s,%s,%d,", kLogEventsNames[Logger::CODE_CREATION_EVENT], kLogEventsNames[tag], code->kind()); msg->AppendAddress(code->address()); msg->Append(",%d,", code->ExecutableSize()); } void Logger::CodeCreateEvent(LogEventsAndTags tag, Code* code, const char* comment) { PROFILER_LOG(CodeCreateEvent(tag, code, comment)); if (!is_logging_code_events()) return; CALL_LISTENERS(CodeCreateEvent(tag, code, comment)); if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); AppendCodeCreateHeader(&msg, tag, code); msg.AppendDoubleQuotedString(comment); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::CodeCreateEvent(LogEventsAndTags tag, Code* code, Name* name) { PROFILER_LOG(CodeCreateEvent(tag, code, name)); if (!is_logging_code_events()) return; CALL_LISTENERS(CodeCreateEvent(tag, code, name)); if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); AppendCodeCreateHeader(&msg, tag, code); if (name->IsString()) { msg.Append('"'); msg.AppendDetailed(String::cast(name), false); msg.Append('"'); } else { msg.AppendSymbolName(Symbol::cast(name)); } msg.Append('\n'); msg.WriteToLogFile(); } void Logger::CodeCreateEvent(LogEventsAndTags tag, Code* code, SharedFunctionInfo* shared, CompilationInfo* info, Name* name) { PROFILER_LOG(CodeCreateEvent(tag, code, shared, info, name)); if (!is_logging_code_events()) return; CALL_LISTENERS(CodeCreateEvent(tag, code, shared, info, name)); if (!FLAG_log_code || !log_->IsEnabled()) return; if (code == isolate_->builtins()->builtin( Builtins::kLazyCompile)) return; Log::MessageBuilder msg(log_); AppendCodeCreateHeader(&msg, tag, code); if (name->IsString()) { SmartArrayPointer<char> str = String::cast(name)->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); msg.Append("\"%s\"", *str); } else { msg.AppendSymbolName(Symbol::cast(name)); } msg.Append(','); msg.AppendAddress(shared->address()); msg.Append(",%s", ComputeMarker(code)); msg.Append('\n'); msg.WriteToLogFile(); } // Although, it is possible to extract source and line from // the SharedFunctionInfo object, we left it to caller // to leave logging functions free from heap allocations. void Logger::CodeCreateEvent(LogEventsAndTags tag, Code* code, SharedFunctionInfo* shared, CompilationInfo* info, Name* source, int line) { PROFILER_LOG(CodeCreateEvent(tag, code, shared, info, source, line)); if (!is_logging_code_events()) return; CALL_LISTENERS(CodeCreateEvent(tag, code, shared, info, source, line)); if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); AppendCodeCreateHeader(&msg, tag, code); SmartArrayPointer<char> name = shared->DebugName()->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); msg.Append("\"%s ", *name); if (source->IsString()) { SmartArrayPointer<char> sourcestr = String::cast(source)->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); msg.Append("%s", *sourcestr); } else { msg.AppendSymbolName(Symbol::cast(source)); } msg.Append(":%d\",", line); msg.AppendAddress(shared->address()); msg.Append(",%s", ComputeMarker(code)); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::CodeCreateEvent(LogEventsAndTags tag, Code* code, int args_count) { PROFILER_LOG(CodeCreateEvent(tag, code, args_count)); if (!is_logging_code_events()) return; CALL_LISTENERS(CodeCreateEvent(tag, code, args_count)); if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); AppendCodeCreateHeader(&msg, tag, code); msg.Append("\"args_count: %d\"", args_count); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::CodeMovingGCEvent() { PROFILER_LOG(CodeMovingGCEvent()); if (!is_logging_code_events()) return; if (!log_->IsEnabled() || !FLAG_ll_prof) return; CALL_LISTENERS(CodeMovingGCEvent()); OS::SignalCodeMovingGC(); } void Logger::RegExpCodeCreateEvent(Code* code, String* source) { PROFILER_LOG(RegExpCodeCreateEvent(code, source)); if (!is_logging_code_events()) return; CALL_LISTENERS(RegExpCodeCreateEvent(code, source)); if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); AppendCodeCreateHeader(&msg, REG_EXP_TAG, code); msg.Append('"'); msg.AppendDetailed(source, false); msg.Append('"'); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::CodeMoveEvent(Address from, Address to) { PROFILER_LOG(CodeMoveEvent(from, to)); if (!is_logging_code_events()) return; CALL_LISTENERS(CodeMoveEvent(from, to)); MoveEventInternal(CODE_MOVE_EVENT, from, to); } void Logger::CodeDeleteEvent(Address from) { PROFILER_LOG(CodeDeleteEvent(from)); if (!is_logging_code_events()) return; CALL_LISTENERS(CodeDeleteEvent(from)); if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); msg.Append("%s,", kLogEventsNames[CODE_DELETE_EVENT]); msg.AppendAddress(from); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::CodeLinePosInfoAddPositionEvent(void* jit_handler_data, int pc_offset, int position) { JIT_LOG(AddCodeLinePosInfoEvent(jit_handler_data, pc_offset, position, JitCodeEvent::POSITION)); } void Logger::CodeLinePosInfoAddStatementPositionEvent(void* jit_handler_data, int pc_offset, int position) { JIT_LOG(AddCodeLinePosInfoEvent(jit_handler_data, pc_offset, position, JitCodeEvent::STATEMENT_POSITION)); } void Logger::CodeStartLinePosInfoRecordEvent(PositionsRecorder* pos_recorder) { if (jit_logger_ != NULL) { pos_recorder->AttachJITHandlerData(jit_logger_->StartCodePosInfoEvent()); } } void Logger::CodeEndLinePosInfoRecordEvent(Code* code, void* jit_handler_data) { JIT_LOG(EndCodePosInfoEvent(code, jit_handler_data)); } void Logger::CodeNameEvent(Address addr, int pos, const char* code_name) { if (code_name == NULL) return; // Not a code object. Log::MessageBuilder msg(log_); msg.Append("%s,%d,", kLogEventsNames[SNAPSHOT_CODE_NAME_EVENT], pos); msg.AppendDoubleQuotedString(code_name); msg.Append("\n"); msg.WriteToLogFile(); } void Logger::SnapshotPositionEvent(Address addr, int pos) { if (!log_->IsEnabled()) return; LL_LOG(SnapshotPositionEvent(addr, pos)); if (!FLAG_log_snapshot_positions) return; Log::MessageBuilder msg(log_); msg.Append("%s,", kLogEventsNames[SNAPSHOT_POSITION_EVENT]); msg.AppendAddress(addr); msg.Append(",%d", pos); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::SharedFunctionInfoMoveEvent(Address from, Address to) { PROFILER_LOG(SharedFunctionInfoMoveEvent(from, to)); if (!is_logging_code_events()) return; MoveEventInternal(SHARED_FUNC_MOVE_EVENT, from, to); } void Logger::MoveEventInternal(LogEventsAndTags event, Address from, Address to) { if (!FLAG_log_code || !log_->IsEnabled()) return; Log::MessageBuilder msg(log_); msg.Append("%s,", kLogEventsNames[event]); msg.AppendAddress(from); msg.Append(','); msg.AppendAddress(to); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::ResourceEvent(const char* name, const char* tag) { if (!log_->IsEnabled() || !FLAG_log) return; Log::MessageBuilder msg(log_); msg.Append("%s,%s,", name, tag); uint32_t sec, usec; if (OS::GetUserTime(&sec, &usec) != -1) { msg.Append("%d,%d,", sec, usec); } msg.Append("%.0f", OS::TimeCurrentMillis()); msg.Append('\n'); msg.WriteToLogFile(); } void Logger::SuspectReadEvent(Name* name, Object* obj) { if (!log_->IsEnabled() || !FLAG_log_suspect) return; Log::MessageBuilder msg(log_); String* class_name = obj->IsJSObject() ? JSObject::cast(obj)->class_name() : isolate_->heap()->empty_string(); msg.Append("suspect-read,"); msg.Append(class_name); msg.Append(','); if (name->IsString()) { msg.Append('"'); msg.Append(String::cast(name)); msg.Append('"'); } else { msg.AppendSymbolName(Symbol::cast(name)); } msg.Append('\n'); msg.WriteToLogFile(); } void Logger::HeapSampleBeginEvent(const char* space, const char* kind) { if (!log_->IsEnabled() || !FLAG_log_gc) return; Log::MessageBuilder msg(log_); // Using non-relative system time in order to be able to synchronize with // external memory profiling events (e.g. DOM memory size). msg.Append("heap-sample-begin,\"%s\",\"%s\",%.0f\n", space, kind, OS::TimeCurrentMillis()); msg.WriteToLogFile(); } void Logger::HeapSampleEndEvent(const char* space, const char* kind) { if (!log_->IsEnabled() || !FLAG_log_gc) return; Log::MessageBuilder msg(log_); msg.Append("heap-sample-end,\"%s\",\"%s\"\n", space, kind); msg.WriteToLogFile(); } void Logger::HeapSampleItemEvent(const char* type, int number, int bytes) { if (!log_->IsEnabled() || !FLAG_log_gc) return; Log::MessageBuilder msg(log_); msg.Append("heap-sample-item,%s,%d,%d\n", type, number, bytes); msg.WriteToLogFile(); } void Logger::DebugTag(const char* call_site_tag) { if (!log_->IsEnabled() || !FLAG_log) return; Log::MessageBuilder msg(log_); msg.Append("debug-tag,%s\n", call_site_tag); msg.WriteToLogFile(); } void Logger::DebugEvent(const char* event_type, Vector<uint16_t> parameter) { if (!log_->IsEnabled() || !FLAG_log) return; StringBuilder s(parameter.length() + 1); for (int i = 0; i < parameter.length(); ++i) { s.AddCharacter(static_cast<char>(parameter[i])); } char* parameter_string = s.Finalize(); Log::MessageBuilder msg(log_); msg.Append("debug-queue-event,%s,%15.3f,%s\n", event_type, OS::TimeCurrentMillis(), parameter_string); DeleteArray(parameter_string); msg.WriteToLogFile(); } void Logger::TickEvent(TickSample* sample, bool overflow) { if (!log_->IsEnabled() || !FLAG_prof) return; Log::MessageBuilder msg(log_); msg.Append("%s,", kLogEventsNames[TICK_EVENT]); msg.AppendAddress(sample->pc); msg.Append(",%ld", static_cast<int>(OS::Ticks() - epoch_)); if (sample->has_external_callback) { msg.Append(",1,"); msg.AppendAddress(sample->external_callback); } else { msg.Append(",0,"); msg.AppendAddress(sample->tos); } msg.Append(",%d", static_cast<int>(sample->state)); if (overflow) { msg.Append(",overflow"); } for (int i = 0; i < sample->frames_count; ++i) { msg.Append(','); msg.AppendAddress(sample->stack[i]); } msg.Append('\n'); msg.WriteToLogFile(); } bool Logger::IsProfilerPaused() { return profiler_ == NULL || profiler_->paused(); } void Logger::PauseProfiler() { if (!log_->IsEnabled()) return; if (profiler_ != NULL) { // It is OK to have negative nesting. if (--cpu_profiler_nesting_ == 0) { profiler_->pause(); if (FLAG_prof_lazy) { ticker_->Stop(); FLAG_log_code = false; LOG(ISOLATE, UncheckedStringEvent("profiler", "pause")); } --logging_nesting_; } } } void Logger::ResumeProfiler() { if (!log_->IsEnabled()) return; if (profiler_ != NULL) { if (cpu_profiler_nesting_++ == 0) { ++logging_nesting_; if (FLAG_prof_lazy) { profiler_->Engage(); LOG(ISOLATE, UncheckedStringEvent("profiler", "resume")); FLAG_log_code = true; LogCompiledFunctions(); LogAccessorCallbacks(); if (!ticker_->IsActive()) ticker_->Start(); } profiler_->resume(); } } } // This function can be called when Log's mutex is acquired, // either from main or Profiler's thread. void Logger::LogFailure() { PauseProfiler(); } class EnumerateOptimizedFunctionsVisitor: public OptimizedFunctionVisitor { public: EnumerateOptimizedFunctionsVisitor(Handle<SharedFunctionInfo>* sfis, Handle<Code>* code_objects, int* count) : sfis_(sfis), code_objects_(code_objects), count_(count) { } virtual void EnterContext(Context* context) {} virtual void LeaveContext(Context* context) {} virtual void VisitFunction(JSFunction* function) { SharedFunctionInfo* sfi = SharedFunctionInfo::cast(function->shared()); Object* maybe_script = sfi->script(); if (maybe_script->IsScript() && !Script::cast(maybe_script)->HasValidSource()) return; if (sfis_ != NULL) { sfis_[*count_] = Handle<SharedFunctionInfo>(sfi); } if (code_objects_ != NULL) { ASSERT(function->code()->kind() == Code::OPTIMIZED_FUNCTION); code_objects_[*count_] = Handle<Code>(function->code()); } *count_ = *count_ + 1; } private: Handle<SharedFunctionInfo>* sfis_; Handle<Code>* code_objects_; int* count_; }; static int EnumerateCompiledFunctions(Heap* heap, Handle<SharedFunctionInfo>* sfis, Handle<Code>* code_objects) { HeapIterator iterator(heap); DisallowHeapAllocation no_gc; int compiled_funcs_count = 0; // Iterate the heap to find shared function info objects and record // the unoptimized code for them. for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { if (!obj->IsSharedFunctionInfo()) continue; SharedFunctionInfo* sfi = SharedFunctionInfo::cast(obj); if (sfi->is_compiled() && (!sfi->script()->IsScript() || Script::cast(sfi->script())->HasValidSource())) { if (sfis != NULL) { sfis[compiled_funcs_count] = Handle<SharedFunctionInfo>(sfi); } if (code_objects != NULL) { code_objects[compiled_funcs_count] = Handle<Code>(sfi->code()); } ++compiled_funcs_count; } } // Iterate all optimized functions in all contexts. EnumerateOptimizedFunctionsVisitor visitor(sfis, code_objects, &compiled_funcs_count); Deoptimizer::VisitAllOptimizedFunctions(heap->isolate(), &visitor); return compiled_funcs_count; } void Logger::LogCodeObject(Object* object) { Code* code_object = Code::cast(object); LogEventsAndTags tag = Logger::STUB_TAG; const char* description = "Unknown code from the snapshot"; switch (code_object->kind()) { case Code::FUNCTION: case Code::OPTIMIZED_FUNCTION: return; // We log this later using LogCompiledFunctions. case Code::UNARY_OP_IC: // fall through case Code::BINARY_OP_IC: // fall through case Code::COMPARE_IC: // fall through case Code::COMPARE_NIL_IC: // fall through case Code::TO_BOOLEAN_IC: // fall through case Code::STUB: description = CodeStub::MajorName(CodeStub::GetMajorKey(code_object), true); if (description == NULL) description = "A stub from the snapshot"; tag = Logger::STUB_TAG; break; case Code::REGEXP: description = "Regular expression code"; tag = Logger::REG_EXP_TAG; break; case Code::BUILTIN: description = "A builtin from the snapshot"; tag = Logger::BUILTIN_TAG; break; case Code::KEYED_LOAD_IC: description = "A keyed load IC from the snapshot"; tag = Logger::KEYED_LOAD_IC_TAG; break; case Code::LOAD_IC: description = "A load IC from the snapshot"; tag = Logger::LOAD_IC_TAG; break; case Code::STORE_IC: description = "A store IC from the snapshot"; tag = Logger::STORE_IC_TAG; break; case Code::KEYED_STORE_IC: description = "A keyed store IC from the snapshot"; tag = Logger::KEYED_STORE_IC_TAG; break; case Code::CALL_IC: description = "A call IC from the snapshot"; tag = Logger::CALL_IC_TAG; break; case Code::KEYED_CALL_IC: description = "A keyed call IC from the snapshot"; tag = Logger::KEYED_CALL_IC_TAG; break; case Code::NUMBER_OF_KINDS: break; } PROFILE(isolate_, CodeCreateEvent(tag, code_object, description)); } void Logger::LogCodeObjects() { Heap* heap = isolate_->heap(); heap->CollectAllGarbage(Heap::kMakeHeapIterableMask, "Logger::LogCodeObjects"); HeapIterator iterator(heap); DisallowHeapAllocation no_gc; for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { if (obj->IsCode()) LogCodeObject(obj); } } void Logger::LogExistingFunction(Handle<SharedFunctionInfo> shared, Handle<Code> code) { Handle<String> func_name(shared->DebugName()); if (shared->script()->IsScript()) { Handle<Script> script(Script::cast(shared->script())); int line_num = GetScriptLineNumber(script, shared->start_position()) + 1; if (script->name()->IsString()) { Handle<String> script_name(String::cast(script->name())); if (line_num > 0) { PROFILE(isolate_, CodeCreateEvent( Logger::ToNativeByScript(Logger::LAZY_COMPILE_TAG, *script), *code, *shared, NULL, *script_name, line_num)); } else { // Can't distinguish eval and script here, so always use Script. PROFILE(isolate_, CodeCreateEvent( Logger::ToNativeByScript(Logger::SCRIPT_TAG, *script), *code, *shared, NULL, *script_name)); } } else { PROFILE(isolate_, CodeCreateEvent( Logger::ToNativeByScript(Logger::LAZY_COMPILE_TAG, *script), *code, *shared, NULL, isolate_->heap()->empty_string(), line_num)); } } else if (shared->IsApiFunction()) { // API function. FunctionTemplateInfo* fun_data = shared->get_api_func_data(); Object* raw_call_data = fun_data->call_code(); if (!raw_call_data->IsUndefined()) { CallHandlerInfo* call_data = CallHandlerInfo::cast(raw_call_data); Object* callback_obj = call_data->callback(); Address entry_point = v8::ToCData<Address>(callback_obj); PROFILE(isolate_, CallbackEvent(*func_name, entry_point)); } } else { PROFILE(isolate_, CodeCreateEvent( Logger::LAZY_COMPILE_TAG, *code, *shared, NULL, *func_name)); } } void Logger::LogCompiledFunctions() { Heap* heap = isolate_->heap(); heap->CollectAllGarbage(Heap::kMakeHeapIterableMask, "Logger::LogCompiledFunctions"); HandleScope scope(isolate_); const int compiled_funcs_count = EnumerateCompiledFunctions(heap, NULL, NULL); ScopedVector< Handle<SharedFunctionInfo> > sfis(compiled_funcs_count); ScopedVector< Handle<Code> > code_objects(compiled_funcs_count); EnumerateCompiledFunctions(heap, sfis.start(), code_objects.start()); // During iteration, there can be heap allocation due to // GetScriptLineNumber call. for (int i = 0; i < compiled_funcs_count; ++i) { if (*code_objects[i] == isolate_->builtins()->builtin( Builtins::kLazyCompile)) continue; LogExistingFunction(sfis[i], code_objects[i]); } } void Logger::LogAccessorCallbacks() { Heap* heap = isolate_->heap(); heap->CollectAllGarbage(Heap::kMakeHeapIterableMask, "Logger::LogAccessorCallbacks"); HeapIterator iterator(heap); DisallowHeapAllocation no_gc; for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { if (!obj->IsExecutableAccessorInfo()) continue; ExecutableAccessorInfo* ai = ExecutableAccessorInfo::cast(obj); if (!ai->name()->IsName()) continue; Address getter_entry = v8::ToCData<Address>(ai->getter()); Name* name = Name::cast(ai->name()); if (getter_entry != 0) { PROFILE(isolate_, GetterCallbackEvent(name, getter_entry)); } Address setter_entry = v8::ToCData<Address>(ai->setter()); if (setter_entry != 0) { PROFILE(isolate_, SetterCallbackEvent(name, setter_entry)); } } } static void AddIsolateIdIfNeeded(StringStream* stream) { Isolate* isolate = Isolate::Current(); if (isolate->IsDefaultIsolate()) return; stream->Add("isolate-%p-", isolate); } static SmartArrayPointer<const char> PrepareLogFileName(const char* file_name) { if (strchr(file_name, '%') != NULL || !Isolate::Current()->IsDefaultIsolate()) { // If there's a '%' in the log file name we have to expand // placeholders. HeapStringAllocator allocator; StringStream stream(&allocator); AddIsolateIdIfNeeded(&stream); for (const char* p = file_name; *p; p++) { if (*p == '%') { p++; switch (*p) { case '\0': // If there's a % at the end of the string we back up // one character so we can escape the loop properly. p--; break; case 'p': stream.Add("%d", OS::GetCurrentProcessId()); break; case 't': { // %t expands to the current time in milliseconds. double time = OS::TimeCurrentMillis(); stream.Add("%.0f", FmtElm(time)); break; } case '%': // %% expands (contracts really) to %. stream.Put('%'); break; default: // All other %'s expand to themselves. stream.Put('%'); stream.Put(*p); break; } } else { stream.Put(*p); } } return SmartArrayPointer<const char>(stream.ToCString()); } int length = StrLength(file_name); char* str = NewArray<char>(length + 1); OS::MemCopy(str, file_name, length); str[length] = '\0'; return SmartArrayPointer<const char>(str); } bool Logger::SetUp(Isolate* isolate) { // Tests and EnsureInitialize() can call this twice in a row. It's harmless. if (is_initialized_) return true; is_initialized_ = true; // --ll-prof implies --log-code and --log-snapshot-positions. if (FLAG_ll_prof) { FLAG_log_snapshot_positions = true; } // --prof_lazy controls --log-code. if (FLAG_prof_lazy) { FLAG_log_code = false; } SmartArrayPointer<const char> log_file_name = PrepareLogFileName(FLAG_logfile); log_->Initialize(*log_file_name); if (FLAG_ll_prof) { ll_logger_ = new LowLevelLogger(*log_file_name); addCodeEventListener(ll_logger_); } ticker_ = new Ticker(isolate, kSamplingIntervalMs); if (Log::InitLogAtStart()) { logging_nesting_ = 1; } if (FLAG_prof) { profiler_ = new Profiler(isolate); if (FLAG_prof_lazy) { profiler_->pause(); } else { logging_nesting_ = 1; profiler_->Engage(); } } if (FLAG_log_internal_timer_events || FLAG_prof) epoch_ = OS::Ticks(); return true; } void Logger::SetCodeEventHandler(uint32_t options, JitCodeEventHandler event_handler) { if (jit_logger_) { removeCodeEventListener(jit_logger_); delete jit_logger_; jit_logger_ = NULL; } if (event_handler) { jit_logger_ = new JitLogger(event_handler); addCodeEventListener(jit_logger_); if (options & kJitCodeEventEnumExisting) { HandleScope scope(isolate_); LogCodeObjects(); LogCompiledFunctions(); } } } Sampler* Logger::sampler() { return ticker_; } FILE* Logger::TearDown() { if (!is_initialized_) return NULL; is_initialized_ = false; // Stop the profiler before closing the file. if (profiler_ != NULL) { profiler_->Disengage(); delete profiler_; profiler_ = NULL; } delete ticker_; ticker_ = NULL; if (ll_logger_) { removeCodeEventListener(ll_logger_); delete ll_logger_; ll_logger_ = NULL; } if (jit_logger_) { removeCodeEventListener(jit_logger_); delete jit_logger_; jit_logger_ = NULL; } return log_->Close(); } } } // namespace v8::internal