// Copyright 2015 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 "src/tracing/trace-event.h" #include <string.h> #include "src/counters.h" #include "src/isolate.h" #include "src/v8.h" namespace v8 { namespace internal { namespace tracing { // A global flag used as a shortcut to check for the // v8.runtime-call-stats category due to its high frequency use. base::Atomic32 kRuntimeCallStatsTracingEnabled = false; v8::Platform* TraceEventHelper::GetCurrentPlatform() { return v8::internal::V8::GetCurrentPlatform(); } void CallStatsScopedTracer::AddEndTraceEvent() { if (!has_parent_scope_ && p_data_->isolate) { v8::internal::tracing::AddTraceEvent( TRACE_EVENT_PHASE_END, p_data_->category_group_enabled, p_data_->name, v8::internal::tracing::kGlobalScope, v8::internal::tracing::kNoId, v8::internal::tracing::kNoId, TRACE_EVENT_FLAG_NONE, "runtime-call-stats", TRACE_STR_COPY( p_data_->isolate->counters()->runtime_call_stats()->Dump())); } else { v8::internal::tracing::AddTraceEvent( TRACE_EVENT_PHASE_END, p_data_->category_group_enabled, p_data_->name, v8::internal::tracing::kGlobalScope, v8::internal::tracing::kNoId, v8::internal::tracing::kNoId, TRACE_EVENT_FLAG_NONE); } } void CallStatsScopedTracer::Initialize(v8::internal::Isolate* isolate, const uint8_t* category_group_enabled, const char* name) { data_.isolate = isolate; data_.category_group_enabled = category_group_enabled; data_.name = name; p_data_ = &data_; RuntimeCallStats* table = isolate->counters()->runtime_call_stats(); has_parent_scope_ = table->InUse(); if (!has_parent_scope_) table->Reset(); v8::internal::tracing::AddTraceEvent( TRACE_EVENT_PHASE_BEGIN, category_group_enabled, name, v8::internal::tracing::kGlobalScope, v8::internal::tracing::kNoId, TRACE_EVENT_FLAG_NONE, v8::internal::tracing::kNoId); } } // namespace tracing } // namespace internal } // namespace v8