Report approximated duration in milliseconds for profile nodes.

src/cpu-profiler.cc

 // Copyright 2010 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 418 matching lines @@
       Logger::LogFunctionObjects();
       Logger::LogAccessorCallbacks();
     }
     // Enable stack sampling.
     reinterpret_cast<Sampler*>(Logger::ticker_)->Start();
   }
 }
 
 
 CpuProfile* CpuProfiler::StopCollectingProfile(const char* title) {
+  const double actual_sampling_rate = generator_->actual_sampling_rate();
   StopProcessorIfLastProfile();
-  CpuProfile* result = profiles_->StopProfiling(title);
+  CpuProfile* result = profiles_->StopProfiling(title, actual_sampling_rate);
   if (result != NULL) {
     result->Print();
   }
   return result;
 }
 
 
 CpuProfile* CpuProfiler::StopCollectingProfile(String* title) {
+  const double actual_sampling_rate = generator_->actual_sampling_rate();
   StopProcessorIfLastProfile();
-  return profiles_->StopProfiling(title);
+  return profiles_->StopProfiling(title, actual_sampling_rate);
 }
 
 
 void CpuProfiler::StopProcessorIfLastProfile() {
   if (profiles_->is_last_profile()) {
     reinterpret_cast<Sampler*>(Logger::ticker_)->Stop();
     processor_->Stop();
     processor_->Join();
     delete processor_;
     delete generator_;
@@ skipping 22 matching lines @@
 void CpuProfiler::TearDown() {
 #ifdef ENABLE_LOGGING_AND_PROFILING
   if (singleton_ != NULL) {
     delete singleton_;
   }
   singleton_ = NULL;
 #endif
 }
 
 } }  // namespace v8::internal