[serializer] introduce API to serialize internal fields

src/api.cc

 // Copyright 2012 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/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 505 matching lines @@
   SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
   DCHECK(!data->created_);
   DCHECK_EQ(reinterpret_cast<i::Isolate*>(data->isolate_),
             Utils::OpenHandle(*template_obj)->GetIsolate());
   size_t index = static_cast<int>(data->templates_.Size());
   data->templates_.Append(template_obj);
   return index;
 }
 
 StartupData SnapshotCreator::CreateBlob(
-    SnapshotCreator::FunctionCodeHandling function_code_handling) {
+    SnapshotCreator::FunctionCodeHandling function_code_handling,
+    SerializeInternalFieldsCallback callback) {
   SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(data->isolate_);
   DCHECK(!data->created_);
 
   {
     int num_templates = static_cast<int>(data->templates_.Size());
     i::HandleScope scope(isolate);
     i::Handle<i::FixedArray> templates =
         isolate->factory()->NewFixedArray(num_templates, i::TENURED);
     for (int i = 0; i < num_templates; i++) {
@@ skipping 20 matching lines @@
     contexts.Add(*context);
   }
   data->contexts_.Clear();
 
   i::StartupSerializer startup_serializer(isolate, function_code_handling);
   startup_serializer.SerializeStrongReferences();
 
   // Serialize each context with a new partial serializer.
   i::List<i::SnapshotData*> context_snapshots(num_contexts);
   for (int i = 0; i < num_contexts; i++) {
-    i::PartialSerializer partial_serializer(isolate, &startup_serializer);
+    i::PartialSerializer partial_serializer(isolate, &startup_serializer,
+                                            callback);
     partial_serializer.Serialize(&contexts[i]);
     context_snapshots.Add(new i::SnapshotData(&partial_serializer));
   }
 
   startup_serializer.SerializeWeakReferencesAndDeferred();
   i::SnapshotData startup_snapshot(&startup_serializer);
   StartupData result =
       i::Snapshot::CreateSnapshotBlob(&startup_snapshot, &context_snapshots);
 
   // Delete heap-allocated context snapshot instances.
@@ skipping 7312 matching lines @@
   if (params.create_histogram_callback) {
     v8_isolate->SetCreateHistogramFunction(params.create_histogram_callback);
   }
 
   if (params.add_histogram_sample_callback) {
     v8_isolate->SetAddHistogramSampleFunction(
         params.add_histogram_sample_callback);
   }
 
   isolate->set_api_external_references(params.external_references);
+  isolate->set_deserialize_internal_fields_callback(
+      params.deserialize_internal_fields_callback);
   SetResourceConstraints(isolate, params.constraints);
   // TODO(jochen): Once we got rid of Isolate::Current(), we can remove this.
   Isolate::Scope isolate_scope(v8_isolate);
   if (params.entry_hook || !i::Snapshot::Initialize(isolate)) {
     isolate->Init(NULL);
   }
   return v8_isolate;
 }
 
 
@@ skipping 1590 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8