Put V8 extras into the snapshot

src/snapshot/natives.h

 // Copyright 2011 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.
 
 #ifndef V8_SNAPSHOT_NATIVES_H_
 #define V8_SNAPSHOT_NATIVES_H_
 
+#include "src/heap/heap.h"
+#include "src/heap/heap-inl.h"
+#include "src/objects.h"
+#include "src/objects-inl.h"
 #include "src/vector.h"
 
 namespace v8 { class StartupData; }  // Forward declaration.
 
 namespace v8 {
 namespace internal {
 
 enum NativeType { CORE, CODE_STUB, EXPERIMENTAL, EXTRAS, D8, TEST };
 
 template <NativeType type>
 class NativesCollection {
  public:
+  // The following methods are implemented in js2c-generated code:
+
   // Number of built-in scripts.
   static int GetBuiltinsCount();
   // Number of debugger implementation scripts.
   static int GetDebuggerCount();
 
   // These are used to access built-in scripts.  The debugger implementation
   // scripts have an index in the interval [0, GetDebuggerCount()).  The
   // non-debugger scripts have an index in the interval [GetDebuggerCount(),
   // GetNativesCount()).
   static int GetIndex(const char* name);
   static Vector<const char> GetScriptSource(int index);
   static Vector<const char> GetScriptName(int index);
   static Vector<const char> GetScriptsSource();
+
+  // The following methods are implemented below:
+
+  inline static FixedArray* GetSourceCache(Heap* heap);
+  static void UpdateSourceCache(Heap* heap);
 };
 
 typedef NativesCollection<CORE> Natives;
 typedef NativesCollection<CODE_STUB> CodeStubNatives;
 typedef NativesCollection<EXPERIMENTAL> ExperimentalNatives;
 typedef NativesCollection<EXTRAS> ExtraNatives;
 
+
+template <>
+inline FixedArray* Natives::GetSourceCache(Heap* heap) {
+  return heap->natives_source_cache();
+}
+
+
+template <>
+inline FixedArray* ExperimentalNatives::GetSourceCache(Heap* heap) {
+  return heap->experimental_natives_source_cache();
+}
+
+
+template <>
+inline FixedArray* ExtraNatives::GetSourceCache(Heap* heap) {
+  return heap->extra_natives_source_cache();
+}
+
+
+template <>
+inline FixedArray* CodeStubNatives::GetSourceCache(Heap* heap) {
+  return heap->code_stub_natives_source_cache();
+}
+
+template <NativeType type>
+void NativesCollection<type>::UpdateSourceCache(Heap* heap) {
+  for (int i = 0; i < GetBuiltinsCount(); i++) {
+    Object* source = GetSourceCache(heap)->get(i);
+    if (!source->IsUndefined()) {
+      ExternalOneByteString::cast(source)->update_data_cache();
+    }
+  }
+}
+
+
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
 // Used for reading the natives at runtime. Implementation in natives-empty.cc
 void SetNativesFromFile(StartupData* natives_blob);
 void ReadNatives();
 void DisposeNatives();
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_SNAPSHOT_NATIVES_H_