Add more timing information in the VM to track time spent is dart code Vs native code.

runtime/vm/dart_entry.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/dart_entry.h"
 
 #include "vm/class_finalizer.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/debugger.h"
@@ skipping 34 matching lines @@
   // Get the entrypoint corresponding to the function specified, this
   // will result in a compilation of the function if it is not already
   // compiled.
   if (!function.HasCode()) {
     const Error& error = Error::Handle(Compiler::CompileFunction(function));
     if (!error.IsNull()) {
       return error.raw();
     }
   }
   // Now Call the invoke stub which will invoke the dart function.
+  Isolate* isolate = Isolate::Current();
+  TIMERSCOPE(isolate, time_dart_execution);
   invokestub entrypoint = reinterpret_cast<invokestub>(
       StubCode::InvokeDartCodeEntryPoint());
-  const Code& code = Code::Handle(function.CurrentCode());
+  const Code& code = Code::Handle(isolate, function.CurrentCode());
   ASSERT(!code.IsNull());
-  ASSERT(Isolate::Current()->no_callback_scope_depth() == 0);
+  ASSERT(isolate->no_callback_scope_depth() == 0);
 #if defined(USING_SIMULATOR)
-    return bit_copy<RawObject*, int64_t>(Simulator::Current()->Call(
-        reinterpret_cast<int32_t>(entrypoint),
-        static_cast<int32_t>(code.EntryPoint()),
-        reinterpret_cast<int32_t>(&arguments_descriptor),
-        reinterpret_cast<int32_t>(&arguments),
-        reinterpret_cast<int32_t>(&context)));
+  return bit_copy<RawObject*, int64_t>(Simulator::Current()->Call(
+      reinterpret_cast<int32_t>(entrypoint),
+      static_cast<int32_t>(code.EntryPoint()),
+      reinterpret_cast<int32_t>(&arguments_descriptor),
+      reinterpret_cast<int32_t>(&arguments),
+      reinterpret_cast<int32_t>(&context)));
 #else
-    return entrypoint(code.EntryPoint(),
-                      arguments_descriptor,
-                      arguments,
-                      context);
+  return entrypoint(code.EntryPoint(),
+                    arguments_descriptor,
+                    arguments,
+                    context);
 #endif
 }
 
 
 RawObject* DartEntry::InvokeClosure(const Array& arguments) {
   const Array& arguments_descriptor =
       Array::Handle(ArgumentsDescriptor::New(arguments.Length()));
   return InvokeClosure(arguments, arguments_descriptor);
 }
 
@@ skipping 417 matching lines @@
   // Get send port class from isolate library.
   const Library& isolate_lib = Library::Handle(Library::IsolateLibrary());
   const Class& send_port_cls = Class::Handle(
       isolate_lib.LookupClassAllowPrivate(Symbols::_SendPortImpl()));
   // Check for the same class id.
   ASSERT(!send_port_cls.IsNull());
   return cls.id() == send_port_cls.id();
 }
 
 }  // namespace dart