Revert of [Tracing] Embed V8 runtime call stats into tracing.

src/tracing/trace-event.cc

Index: src/tracing/trace-event.cc
diff --git a/src/tracing/trace-event.cc b/src/tracing/trace-event.cc
index 0c32b5d9ad9e2475ed4cab64aa37b0dd03d36021..04f1f2e2ea0d0a8df9f504b24954cfc7857cd413 100644
--- a/src/tracing/trace-event.cc
+++ b/src/tracing/trace-event.cc
@@ -4,134 +4,14 @@
 
 #include "src/tracing/trace-event.h"
 
-#include <string.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_) {
-    v8::internal::tracing::AddTraceEvent(
-        TRACE_EVENT_PHASE_END, p_data_->category_group_enabled, p_data_->name,
-        v8::internal::tracing::kGlobalScope, v8::internal::tracing::kNoId,
-        TRACE_EVENT_FLAG_NONE, v8::internal::tracing::kNoId,
-        "runtime-call-stat",
-        p_data_->isolate
-            ? TRACE_STR_COPY(
-                  p_data_->isolate->trace_event_stats_table()->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,
-        TRACE_EVENT_FLAG_NONE, v8::internal::tracing::kNoId);
-  }
-}
-
-void CallStatsScopedTracer::Initialize(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_;
-  TraceEventStatsTable* table = isolate->trace_event_stats_table();
-  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);
-}
-
-void TraceEventStatsTable::Enter(Isolate* isolate,
-                                 TraceEventCallStatsTimer* timer,
-                                 CounterId counter_id) {
-  TraceEventStatsTable* table = isolate->trace_event_stats_table();
-  RuntimeCallCounter* counter = &(table->*counter_id);
-  timer->Start(counter, table->current_timer_);
-  table->current_timer_ = timer;
-}
-
-void TraceEventStatsTable::Leave(Isolate* isolate,
-                                 TraceEventCallStatsTimer* timer) {
-  TraceEventStatsTable* table = isolate->trace_event_stats_table();
-  if (table->current_timer_ == timer) {
-    table->current_timer_ = timer->Stop();
-  }
-}
-
-void TraceEventStatsTable::Reset() {
-  in_use_ = true;
-  current_timer_ = nullptr;
-#define RESET_COUNTER(name) this->name.Reset();
-  FOR_EACH_MANUAL_COUNTER(RESET_COUNTER)
-#undef RESET_COUNTER
-
-#define RESET_COUNTER(name, nargs, result_size) this->Runtime_##name.Reset();
-  FOR_EACH_INTRINSIC(RESET_COUNTER)
-#undef RESET_COUNTER
-
-#define RESET_COUNTER(name) this->Builtin_##name.Reset();
-  BUILTIN_LIST_C(RESET_COUNTER)
-#undef RESET_COUNTER
-
-#define RESET_COUNTER(name) this->API_##name.Reset();
-  FOR_EACH_API_COUNTER(RESET_COUNTER)
-#undef RESET_COUNTER
-
-#define RESET_COUNTER(name) this->Handler_##name.Reset();
-  FOR_EACH_HANDLER_COUNTER(RESET_COUNTER)
-#undef RESET_COUNTER
-}
-
-const char* TraceEventStatsTable::Dump() {
-  buffer_.str("");
-  buffer_.clear();
-  buffer_ << "{";
-#define DUMP_COUNTER(name) \
-  if (this->name.count > 0) this->name.Dump(buffer_);
-  FOR_EACH_MANUAL_COUNTER(DUMP_COUNTER)
-#undef DUMP_COUNTER
-
-#define DUMP_COUNTER(name, nargs, result_size) \
-  if (this->Runtime_##name.count > 0) this->Runtime_##name.Dump(buffer_);
-  FOR_EACH_INTRINSIC(DUMP_COUNTER)
-#undef DUMP_COUNTER
-
-#define DUMP_COUNTER(name) \
-  if (this->Builtin_##name.count > 0) this->Builtin_##name.Dump(buffer_);
-  BUILTIN_LIST_C(DUMP_COUNTER)
-#undef DUMP_COUNTER
-
-#define DUMP_COUNTER(name) \
-  if (this->API_##name.count > 0) this->API_##name.Dump(buffer_);
-  FOR_EACH_API_COUNTER(DUMP_COUNTER)
-#undef DUMP_COUNTER
-
-#define DUMP_COUNTER(name) \
-  if (this->Handler_##name.count > 0) this->Handler_##name.Dump(buffer_);
-  FOR_EACH_HANDLER_COUNTER(DUMP_COUNTER)
-#undef DUMP_COUNTER
-  buffer_ << "\"END\":[]}";
-  std::string buffer_str = buffer_.str();
-  size_t length = buffer_str.size();
-  char* buffer_c_str = new char[length + 1];
-  memcpy(buffer_c_str, buffer_str.c_str(), length + 1);
-  in_use_ = false;
-  return buffer_c_str;
 }
 
 }  // namespace tracing