Precompilation:

runtime/vm/dart.cc

 // Copyright (c) 2013, 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.h"
 
 #include "vm/code_observers.h"
 #include "vm/cpu.h"
 #include "vm/dart_api_state.h"
 #include "vm/dart_entry.h"
@@ skipping 143 matching lines @@
     ObjectStore::Init(vm_isolate_);
     TargetCPUFeatures::InitOnce();
     Object::InitOnce(vm_isolate_);
     ArgumentsDescriptor::InitOnce();
     ICData::InitOnce();
     // When precompiled the stub code is initialized from the snapshot.
     if (!precompiled) {
       StubCode::InitOnce();
     }
     if (vm_isolate_snapshot != NULL) {
+      NOT_IN_PRODUCT(TimelineDurationScope tds(Timeline::GetVMStream(),
+                                               "VMIsolateSnapshot"));
       if (data_snapshot != NULL) {
         vm_isolate_->SetupDataSnapshotPage(data_snapshot);
       }
       const Snapshot* snapshot = Snapshot::SetupFromBuffer(vm_isolate_snapshot);
       if (snapshot == NULL) {
         return "Invalid vm isolate snapshot seen.";
       }
       ASSERT(snapshot->kind() == Snapshot::kFull);
       VmIsolateSnapshotReader reader(snapshot->content(),
                                      snapshot->length(),
@@ skipping 21 matching lines @@
     // We need to initialize the constants here for the vm isolate thread due to
     // bootstrapping issues.
     T->InitVMConstants();
     Scanner::InitOnce();
 #if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
     // Dart VM requires at least SSE2.
     if (!TargetCPUFeatures::sse2_supported()) {
       return "SSE2 is required.";
     }
 #endif
-    Object::FinalizeVMIsolate(vm_isolate_);
+    {
+      NOT_IN_PRODUCT(TimelineDurationScope tds(Timeline::GetVMStream(),
+                                               "FinalizeVMIsolate"));
+      Object::FinalizeVMIsolate(vm_isolate_);
+    }
 #if defined(DEBUG)
     vm_isolate_->heap()->Verify(kRequireMarked);
 #endif
   }
   // Allocate the "persistent" scoped handles for the predefined API
   // values (such as Dart_True, Dart_False and Dart_Null).
   Api::InitHandles();
 
   Thread::ExitIsolate();  // Unregister the VM isolate from this thread.
   Isolate::SetCreateCallback(create);
@@ skipping 349 matching lines @@
   return predefined_handles_->handles_.IsValidScopedHandle(address);
 }
 
 
 bool Dart::IsReadOnlyApiHandle(Dart_Handle handle) {
   ASSERT(predefined_handles_ != NULL);
   return predefined_handles_->api_handles_.IsValidHandle(handle);
 }
 
 }  // namespace dart