src: put (de)serialization code into node_snapshotable.h/cc

So that it's easier to find the corresponding code.

PR-URL: https://github.com/nodejs/node/pull/37114
Refs: https://github.com/nodejs/node/pull/36943
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>

3 files changed, 61 insertions, 13 deletions

diff --git a/src/node_main_instance.cc b/src/node_main_instance.cc
index 37d9dbb9b75..b1c9444fcad 100644
--- a/src/node_main_instance.cc
+++ b/src/node_main_instance.cc
@@ -5,6 +5,7 @@
 #include "node_external_reference.h"
 #include "node_internals.h"
 #include "node_options-inl.h"
+#include "node_snapshotable.h"
 #include "node_v8_platform-inl.h"
 #include "util-inl.h"
 #if defined(LEAK_SANITIZER)
@@ -22,7 +23,6 @@ using v8::HandleScope;
 using v8::Isolate;
 using v8::Local;
 using v8::Locker;
-using v8::Object;
 
 std::unique_ptr<ExternalReferenceRegistry> NodeMainInstance::registry_ =
     nullptr;
@@ -167,18 +167,6 @@ int NodeMainInstance::Run(const EnvSerializeInfo* env_info) {
   return exit_code;
 }
 
-void DeserializeNodeInternalFields(Local<Object> holder,
-                                   int index,
-                                   v8::StartupData payload,
-                                   void* env) {
-  if (payload.raw_size == 0) {
-    holder->SetAlignedPointerInInternalField(index, nullptr);
-    return;
-  }
-  // No embedder object in the builtin snapshot yet.
-  UNREACHABLE();
-}
-
 DeleteFnPtr<Environment, FreeEnvironment>
 NodeMainInstance::CreateMainEnvironment(int* exit_code,
                                         const EnvSerializeInfo* env_info) {
diff --git a/src/node_snapshotable.cc b/src/node_snapshotable.cc
new file mode 100644
index 00000000000..21de1086856
--- /dev/null
+++ b/src/node_snapshotable.cc
@@ -0,0 +1,39 @@
+
+#include "node_snapshotable.h"
+#include "base_object-inl.h"
+
+namespace node {
+
+using v8::Local;
+using v8::Object;
+using v8::StartupData;
+
+void DeserializeNodeInternalFields(Local<Object> holder,
+                                   int index,
+                                   v8::StartupData payload,
+                                   void* env) {
+  if (payload.raw_size == 0) {
+    holder->SetAlignedPointerInInternalField(index, nullptr);
+    return;
+  }
+  // No embedder object in the builtin snapshot yet.
+  UNREACHABLE();
+}
+
+StartupData SerializeNodeContextInternalFields(Local<Object> holder,
+                                               int index,
+                                               void* env) {
+  void* ptr = holder->GetAlignedPointerFromInternalField(index);
+  if (ptr == nullptr || ptr == env) {
+    return StartupData{nullptr, 0};
+  }
+  if (ptr == env && index == ContextEmbedderIndex::kEnvironment) {
+    return StartupData{nullptr, 0};
+  }
+
+  // No embedder objects in the builtin snapshot yet.
+  UNREACHABLE();
+  return StartupData{nullptr, 0};
+}
+
+}  // namespace node
diff --git a/src/node_snapshotable.h b/src/node_snapshotable.h
new file mode 100644
index 00000000000..c45c1381b55
--- /dev/null
+++ b/src/node_snapshotable.h
@@ -0,0 +1,21 @@
+
+#ifndef SRC_NODE_SNAPSHOTABLE_H_
+#define SRC_NODE_SNAPSHOTABLE_H_
+
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
+#include "v8.h"
+namespace node {
+
+v8::StartupData SerializeNodeContextInternalFields(v8::Local<v8::Object> holder,
+                                                   int index,
+                                                   void* env);
+void DeserializeNodeInternalFields(v8::Local<v8::Object> holder,
+                                   int index,
+                                   v8::StartupData payload,
+                                   void* env);
+}  // namespace node
+
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
+#endif  // SRC_NODE_SNAPSHOTABLE_H_