Also time other API functions calling into javascript.

src/log.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 688 matching lines @@
   LogMessageBuilder msg(this);
   msg.Append("shared-library,\"%ls\",0x%08" V8PRIxPTR ",0x%08" V8PRIxPTR "\n",
              library_path,
              start,
              end);
   msg.WriteToLogFile();
 }
 
 
 void Logger::TimerEvent(const char* name, int64_t start, int64_t end) {
+  if (!log_->IsEnabled()) return;
   ASSERT(FLAG_log_timer_events);
   LogMessageBuilder msg(this);
   int since_epoch = static_cast<int>(start - epoch_);
   int pause_time = static_cast<int>(end - start);
   msg.Append("timer-event,\"%s\",%ld,%ld\n", name, since_epoch, pause_time);
   msg.WriteToLogFile();
 }
 
 
+void Logger::TimerEventScope::LogTimerEvent() {
+  Logger* logger = isolate_->logger();
+  if (logger->is_logging()) {
+    logger->TimerEvent(name_, start_, OS::Ticks());
+  }
+}
+
+
 const char* Logger::TimerEventScope::v8_recompile_synchronous =
     "V8.RecompileSynchronous";
 const char* Logger::TimerEventScope::v8_recompile_parallel =
     "V8.RecompileParallel";
 const char* Logger::TimerEventScope::v8_compile_full_code =
     "V8.CompileFullCode";
 const char* Logger::TimerEventScope::v8_execute = "V8.Execute";
 
 
 void Logger::LogRegExpSource(Handle<JSRegExp> regexp) {
@@ skipping 1163 matching lines @@
 void SamplerRegistry::RemoveActiveSampler(Sampler* sampler) {
   ASSERT(sampler->IsActive());
   ScopedLock lock(active_samplers_mutex);
   ASSERT(active_samplers_ != NULL);
   bool removed = active_samplers_->RemoveElement(sampler);
   ASSERT(removed);
   USE(removed);
 }
 
 } }  // namespace v8::internal