| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "v8.h" |
| |
| #include "cpu-profiler-inl.h" |
| |
| #include "compiler.h" |
| #include "frames-inl.h" |
| #include "hashmap.h" |
| #include "log-inl.h" |
| #include "vm-state-inl.h" |
| |
| #include "../include/v8-profiler.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| static const int kProfilerStackSize = 64 * KB; |
| |
| |
| ProfilerEventsProcessor::ProfilerEventsProcessor( |
| ProfileGenerator* generator, |
| Sampler* sampler, |
| TimeDelta period) |
| : Thread(Thread::Options("v8:ProfEvntProc", kProfilerStackSize)), |
| generator_(generator), |
| sampler_(sampler), |
| running_(true), |
| period_(period), |
| last_code_event_id_(0), last_processed_code_event_id_(0) { |
| } |
| |
| |
| void ProfilerEventsProcessor::Enqueue(const CodeEventsContainer& event) { |
| event.generic.order = ++last_code_event_id_; |
| events_buffer_.Enqueue(event); |
| } |
| |
| |
| void ProfilerEventsProcessor::AddCurrentStack(Isolate* isolate) { |
| TickSampleEventRecord record(last_code_event_id_); |
| RegisterState regs; |
| StackFrameIterator it(isolate); |
| if (!it.done()) { |
| StackFrame* frame = it.frame(); |
| regs.sp = frame->sp(); |
| regs.fp = frame->fp(); |
| regs.pc = frame->pc(); |
| } |
| record.sample.Init(isolate, regs); |
| ticks_from_vm_buffer_.Enqueue(record); |
| } |
| |
| |
| void ProfilerEventsProcessor::StopSynchronously() { |
| if (!running_) return; |
| running_ = false; |
| Join(); |
| } |
| |
| |
| bool ProfilerEventsProcessor::ProcessCodeEvent() { |
| CodeEventsContainer record; |
| if (events_buffer_.Dequeue(&record)) { |
| switch (record.generic.type) { |
| #define PROFILER_TYPE_CASE(type, clss) \ |
| case CodeEventRecord::type: \ |
| record.clss##_.UpdateCodeMap(generator_->code_map()); \ |
| break; |
| |
| CODE_EVENTS_TYPE_LIST(PROFILER_TYPE_CASE) |
| |
| #undef PROFILER_TYPE_CASE |
| default: return true; // Skip record. |
| } |
| last_processed_code_event_id_ = record.generic.order; |
| return true; |
| } |
| return false; |
| } |
| |
| ProfilerEventsProcessor::SampleProcessingResult |
| ProfilerEventsProcessor::ProcessOneSample() { |
| if (!ticks_from_vm_buffer_.IsEmpty() |
| && ticks_from_vm_buffer_.Peek()->order == |
| last_processed_code_event_id_) { |
| TickSampleEventRecord record; |
| ticks_from_vm_buffer_.Dequeue(&record); |
| generator_->RecordTickSample(record.sample); |
| return OneSampleProcessed; |
| } |
| |
| const TickSampleEventRecord* record = ticks_buffer_.Peek(); |
| if (record == NULL) { |
| if (ticks_from_vm_buffer_.IsEmpty()) return NoSamplesInQueue; |
| return FoundSampleForNextCodeEvent; |
| } |
| if (record->order != last_processed_code_event_id_) { |
| return FoundSampleForNextCodeEvent; |
| } |
| generator_->RecordTickSample(record->sample); |
| ticks_buffer_.Remove(); |
| return OneSampleProcessed; |
| } |
| |
| |
| void ProfilerEventsProcessor::Run() { |
| while (running_) { |
| ElapsedTimer timer; |
| timer.Start(); |
| // Keep processing existing events until we need to do next sample. |
| do { |
| if (FoundSampleForNextCodeEvent == ProcessOneSample()) { |
| // All ticks of the current last_processed_code_event_id_ are |
| // processed, proceed to the next code event. |
| ProcessCodeEvent(); |
| } |
| } while (!timer.HasExpired(period_)); |
| |
| // Schedule next sample. sampler_ is NULL in tests. |
| if (sampler_) sampler_->DoSample(); |
| } |
| |
| // Process remaining tick events. |
| do { |
| SampleProcessingResult result; |
| do { |
| result = ProcessOneSample(); |
| } while (result == OneSampleProcessed); |
| } while (ProcessCodeEvent()); |
| } |
| |
| |
| void* ProfilerEventsProcessor::operator new(size_t size) { |
| return AlignedAlloc(size, V8_ALIGNOF(ProfilerEventsProcessor)); |
| } |
| |
| |
| void ProfilerEventsProcessor::operator delete(void* ptr) { |
| AlignedFree(ptr); |
| } |
| |
| |
| int CpuProfiler::GetProfilesCount() { |
| // The count of profiles doesn't depend on a security token. |
| return profiles_->profiles()->length(); |
| } |
| |
| |
| CpuProfile* CpuProfiler::GetProfile(int index) { |
| return profiles_->profiles()->at(index); |
| } |
| |
| |
| void CpuProfiler::DeleteAllProfiles() { |
| if (is_profiling_) StopProcessor(); |
| ResetProfiles(); |
| } |
| |
| |
| void CpuProfiler::DeleteProfile(CpuProfile* profile) { |
| profiles_->RemoveProfile(profile); |
| delete profile; |
| if (profiles_->profiles()->is_empty() && !is_profiling_) { |
| // If this was the last profile, clean up all accessory data as well. |
| ResetProfiles(); |
| } |
| } |
| |
| |
| static bool FilterOutCodeCreateEvent(Logger::LogEventsAndTags tag) { |
| return FLAG_prof_browser_mode |
| && (tag != Logger::CALLBACK_TAG |
| && tag != Logger::FUNCTION_TAG |
| && tag != Logger::LAZY_COMPILE_TAG |
| && tag != Logger::REG_EXP_TAG |
| && tag != Logger::SCRIPT_TAG); |
| } |
| |
| |
| void CpuProfiler::CallbackEvent(Name* name, Address entry_point) { |
| if (FilterOutCodeCreateEvent(Logger::CALLBACK_TAG)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = entry_point; |
| rec->entry = profiles_->NewCodeEntry( |
| Logger::CALLBACK_TAG, |
| profiles_->GetName(name)); |
| rec->size = 1; |
| rec->shared = NULL; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag, |
| Code* code, |
| const char* name) { |
| if (FilterOutCodeCreateEvent(tag)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = profiles_->NewCodeEntry(tag, profiles_->GetFunctionName(name)); |
| rec->size = code->ExecutableSize(); |
| rec->shared = NULL; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag, |
| Code* code, |
| Name* name) { |
| if (FilterOutCodeCreateEvent(tag)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = profiles_->NewCodeEntry(tag, profiles_->GetFunctionName(name)); |
| rec->size = code->ExecutableSize(); |
| rec->shared = NULL; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag, |
| Code* code, |
| SharedFunctionInfo* shared, |
| CompilationInfo* info, |
| Name* name) { |
| if (FilterOutCodeCreateEvent(tag)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = profiles_->NewCodeEntry(tag, profiles_->GetFunctionName(name)); |
| if (info) { |
| rec->entry->set_no_frame_ranges(info->ReleaseNoFrameRanges()); |
| } |
| if (shared->script()->IsScript()) { |
| ASSERT(Script::cast(shared->script())); |
| Script* script = Script::cast(shared->script()); |
| rec->entry->set_script_id(script->id()->value()); |
| rec->entry->set_bailout_reason( |
| GetBailoutReason(shared->DisableOptimizationReason())); |
| } |
| rec->size = code->ExecutableSize(); |
| rec->shared = shared->address(); |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag, |
| Code* code, |
| SharedFunctionInfo* shared, |
| CompilationInfo* info, |
| Name* source, int line, int column) { |
| if (FilterOutCodeCreateEvent(tag)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = profiles_->NewCodeEntry( |
| tag, |
| profiles_->GetFunctionName(shared->DebugName()), |
| CodeEntry::kEmptyNamePrefix, |
| profiles_->GetName(source), |
| line, |
| column); |
| if (info) { |
| rec->entry->set_no_frame_ranges(info->ReleaseNoFrameRanges()); |
| } |
| ASSERT(Script::cast(shared->script())); |
| Script* script = Script::cast(shared->script()); |
| rec->entry->set_script_id(script->id()->value()); |
| rec->size = code->ExecutableSize(); |
| rec->shared = shared->address(); |
| rec->entry->set_bailout_reason( |
| GetBailoutReason(shared->DisableOptimizationReason())); |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag, |
| Code* code, |
| int args_count) { |
| if (FilterOutCodeCreateEvent(tag)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = profiles_->NewCodeEntry( |
| tag, |
| profiles_->GetName(args_count), |
| "args_count: "); |
| rec->size = code->ExecutableSize(); |
| rec->shared = NULL; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeMoveEvent(Address from, Address to) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_MOVE); |
| CodeMoveEventRecord* rec = &evt_rec.CodeMoveEventRecord_; |
| rec->from = from; |
| rec->to = to; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeDisableOptEvent(Code* code, SharedFunctionInfo* shared) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_DISABLE_OPT); |
| CodeDisableOptEventRecord* rec = &evt_rec.CodeDisableOptEventRecord_; |
| rec->start = code->address(); |
| rec->bailout_reason = GetBailoutReason(shared->DisableOptimizationReason()); |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::CodeDeleteEvent(Address from) { |
| } |
| |
| |
| void CpuProfiler::SharedFunctionInfoMoveEvent(Address from, Address to) { |
| CodeEventsContainer evt_rec(CodeEventRecord::SHARED_FUNC_MOVE); |
| SharedFunctionInfoMoveEventRecord* rec = |
| &evt_rec.SharedFunctionInfoMoveEventRecord_; |
| rec->from = from; |
| rec->to = to; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::GetterCallbackEvent(Name* name, Address entry_point) { |
| if (FilterOutCodeCreateEvent(Logger::CALLBACK_TAG)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = entry_point; |
| rec->entry = profiles_->NewCodeEntry( |
| Logger::CALLBACK_TAG, |
| profiles_->GetName(name), |
| "get "); |
| rec->size = 1; |
| rec->shared = NULL; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::RegExpCodeCreateEvent(Code* code, String* source) { |
| if (FilterOutCodeCreateEvent(Logger::REG_EXP_TAG)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = profiles_->NewCodeEntry( |
| Logger::REG_EXP_TAG, |
| profiles_->GetName(source), |
| "RegExp: "); |
| rec->size = code->ExecutableSize(); |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| void CpuProfiler::SetterCallbackEvent(Name* name, Address entry_point) { |
| if (FilterOutCodeCreateEvent(Logger::CALLBACK_TAG)) return; |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = entry_point; |
| rec->entry = profiles_->NewCodeEntry( |
| Logger::CALLBACK_TAG, |
| profiles_->GetName(name), |
| "set "); |
| rec->size = 1; |
| rec->shared = NULL; |
| processor_->Enqueue(evt_rec); |
| } |
| |
| |
| CpuProfiler::CpuProfiler(Isolate* isolate) |
| : isolate_(isolate), |
| sampling_interval_(TimeDelta::FromMicroseconds( |
| FLAG_cpu_profiler_sampling_interval)), |
| profiles_(new CpuProfilesCollection(isolate->heap())), |
| generator_(NULL), |
| processor_(NULL), |
| is_profiling_(false) { |
| } |
| |
| |
| CpuProfiler::CpuProfiler(Isolate* isolate, |
| CpuProfilesCollection* test_profiles, |
| ProfileGenerator* test_generator, |
| ProfilerEventsProcessor* test_processor) |
| : isolate_(isolate), |
| sampling_interval_(TimeDelta::FromMicroseconds( |
| FLAG_cpu_profiler_sampling_interval)), |
| profiles_(test_profiles), |
| generator_(test_generator), |
| processor_(test_processor), |
| is_profiling_(false) { |
| } |
| |
| |
| CpuProfiler::~CpuProfiler() { |
| ASSERT(!is_profiling_); |
| delete profiles_; |
| } |
| |
| |
| void CpuProfiler::set_sampling_interval(TimeDelta value) { |
| ASSERT(!is_profiling_); |
| sampling_interval_ = value; |
| } |
| |
| |
| void CpuProfiler::ResetProfiles() { |
| delete profiles_; |
| profiles_ = new CpuProfilesCollection(isolate()->heap()); |
| } |
| |
| |
| void CpuProfiler::StartProfiling(const char* title, bool record_samples) { |
| if (profiles_->StartProfiling(title, record_samples)) { |
| StartProcessorIfNotStarted(); |
| } |
| } |
| |
| |
| void CpuProfiler::StartProfiling(String* title, bool record_samples) { |
| StartProfiling(profiles_->GetName(title), record_samples); |
| } |
| |
| |
| void CpuProfiler::StartProcessorIfNotStarted() { |
| if (processor_ != NULL) { |
| processor_->AddCurrentStack(isolate_); |
| return; |
| } |
| Logger* logger = isolate_->logger(); |
| // Disable logging when using the new implementation. |
| saved_is_logging_ = logger->is_logging_; |
| logger->is_logging_ = false; |
| generator_ = new ProfileGenerator(profiles_); |
| Sampler* sampler = logger->sampler(); |
| processor_ = new ProfilerEventsProcessor( |
| generator_, sampler, sampling_interval_); |
| is_profiling_ = true; |
| // Enumerate stuff we already have in the heap. |
| ASSERT(isolate_->heap()->HasBeenSetUp()); |
| if (!FLAG_prof_browser_mode) { |
| logger->LogCodeObjects(); |
| } |
| logger->LogCompiledFunctions(); |
| logger->LogAccessorCallbacks(); |
| LogBuiltins(); |
| // Enable stack sampling. |
| sampler->SetHasProcessingThread(true); |
| sampler->IncreaseProfilingDepth(); |
| processor_->AddCurrentStack(isolate_); |
| processor_->StartSynchronously(); |
| } |
| |
| |
| CpuProfile* CpuProfiler::StopProfiling(const char* title) { |
| if (!is_profiling_) return NULL; |
| StopProcessorIfLastProfile(title); |
| CpuProfile* result = profiles_->StopProfiling(title); |
| if (result != NULL) { |
| result->Print(); |
| } |
| return result; |
| } |
| |
| |
| CpuProfile* CpuProfiler::StopProfiling(String* title) { |
| if (!is_profiling_) return NULL; |
| const char* profile_title = profiles_->GetName(title); |
| StopProcessorIfLastProfile(profile_title); |
| return profiles_->StopProfiling(profile_title); |
| } |
| |
| |
| void CpuProfiler::StopProcessorIfLastProfile(const char* title) { |
| if (profiles_->IsLastProfile(title)) StopProcessor(); |
| } |
| |
| |
| void CpuProfiler::StopProcessor() { |
| Logger* logger = isolate_->logger(); |
| Sampler* sampler = reinterpret_cast<Sampler*>(logger->ticker_); |
| is_profiling_ = false; |
| processor_->StopSynchronously(); |
| delete processor_; |
| delete generator_; |
| processor_ = NULL; |
| generator_ = NULL; |
| sampler->SetHasProcessingThread(false); |
| sampler->DecreaseProfilingDepth(); |
| logger->is_logging_ = saved_is_logging_; |
| } |
| |
| |
| void CpuProfiler::LogBuiltins() { |
| Builtins* builtins = isolate_->builtins(); |
| ASSERT(builtins->is_initialized()); |
| for (int i = 0; i < Builtins::builtin_count; i++) { |
| CodeEventsContainer evt_rec(CodeEventRecord::REPORT_BUILTIN); |
| ReportBuiltinEventRecord* rec = &evt_rec.ReportBuiltinEventRecord_; |
| Builtins::Name id = static_cast<Builtins::Name>(i); |
| rec->start = builtins->builtin(id)->address(); |
| rec->builtin_id = id; |
| processor_->Enqueue(evt_rec); |
| } |
| } |
| |
| |
| } } // namespace v8::internal |