Integrate Chrome tracing with V8 (WIP)

src/log.cc

 // Copyright 2011 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/log.h"
 
 #include <cstdarg>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/bailout-reason.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/cpu-profiler.h"
 #include "src/deoptimizer.h"
 #include "src/global-handles.h"
 #include "src/log-inl.h"
 #include "src/log-utils.h"
 #include "src/macro-assembler.h"
 #include "src/perf-jit.h"
 #include "src/runtime-profiler.h"
 #include "src/serialize.h"
 #include "src/string-stream.h"
+#include "src/tracing/trace-event.h"
 #include "src/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)
 };
@@ skipping 899 matching lines @@
   Log::MessageBuilder msg(log_);
   int since_epoch = static_cast<int>(timer_.Elapsed().InMicroseconds());
   const char* format = (se == START) ? "timer-event-start,\"%s\",%ld"
                                      : "timer-event-end,\"%s\",%ld";
   msg.Append(format, name, since_epoch);
   msg.WriteToLogFile();
 }
 
 
 void Logger::EnterExternal(Isolate* isolate) {
+  TRACE_EVENT_BEGIN0(TRACE_DISABLED_BY_DEFAULT("V8::External"),
+                     TimerEventExternal::name());
   LOG(isolate, TimerEvent(START, TimerEventExternal::name()));
   DCHECK(isolate->current_vm_state() == JS);
   isolate->set_current_vm_state(EXTERNAL);
 }
 
 
 void Logger::LeaveExternal(Isolate* isolate) {
+  TRACE_EVENT_END0(TRACE_DISABLED_BY_DEFAULT("V8::External"),
+                   TimerEventExternal::name());
   LOG(isolate, TimerEvent(END, TimerEventExternal::name()));
   DCHECK(isolate->current_vm_state() == EXTERNAL);
   isolate->set_current_vm_state(JS);
 }
 
 
 template <class TimerEvent>
 void TimerEventScope<TimerEvent>::LogTimerEvent(Logger::StartEnd se) {
   Logger::CallEventLogger(isolate_, TimerEvent::name(), se,
-                          TimerEvent::expose_to_api());
+                          TimerEvent::overhead());
 }
 
 
 // Instantiate template methods.
-#define V(TimerName, expose)                                           \
+#define V(TimerName, overhead)                                         \
   template void TimerEventScope<TimerEvent##TimerName>::LogTimerEvent( \
       Logger::StartEnd se);
 TIMER_EVENTS_LIST(V)
 #undef V
 
 
 void Logger::LogRegExpSource(Handle<JSRegExp> regexp) {
   // Prints "/" + re.source + "/" +
   //      (re.global?"g":"") + (re.ignorecase?"i":"") + (re.multiline?"m":"")
   Log::MessageBuilder msg(log_);
@@ skipping 954 matching lines @@
   if (jit_logger_) {
     removeCodeEventListener(jit_logger_);
     delete jit_logger_;
     jit_logger_ = NULL;
   }
 
   return log_->Close();
 }
 
 } }  // namespace v8::internal