trace-event.cc

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// 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/execution/isolate.h"
#include "src/init/v8.h"
#include "src/logging/counters.h"
#include "src/tracing/traced-value.h"
 
namespace v8 {
namespace internal {
namespace tracing {
 
#if !defined(V8_USE_PERFETTO)
v8::TracingController* TraceEventHelper::GetTracingController() {
  return v8::internal::V8::GetCurrentPlatform()->GetTracingController();
}
 
#ifdef V8_RUNTIME_CALL_STATS
 
void CallStatsScopedTracer::AddEndTraceEvent() {
  if (!has_parent_scope_ && p_data_->isolate) {
    auto value = v8::tracing::TracedValue::Create();
    p_data_->isolate->counters()->runtime_call_stats()->Dump(value.get());
    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", std::move(value));
  } 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);
}
 
#endif  // defined(V8_RUNTIME_CALL_STATS)
#endif  // !defined(V8_USE_PERFETTO)
 
}  // namespace tracing
}  // namespace internal
}  // namespace v8