src: slim down env-inl.h

Move big and/or infrequently used functions from env-inl.h to env.cc to
speed up build times and reduce binary bloat.

This commit also touches async_wrap-inl.h and base_object-inl.h because
those are closely interwined with env-inl.h.

Non-functional change.

Refs: #43712

PR-URL: #43745
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>

Author: bnoordhuis

src/async_wrap-inl.h

@@ -80,13 +80,6 @@ inline v8::MaybeLocal<v8::Value> AsyncWrap::MakeCallback(
   return MakeCallback(cb_v.As<v8::Function>(), argc, argv);
 }
 
-
-// Defined here to avoid a circular dependency with env-inl.h.
-inline AsyncHooks::DefaultTriggerAsyncIdScope ::DefaultTriggerAsyncIdScope(
-    AsyncWrap* async_wrap)
-    : DefaultTriggerAsyncIdScope(async_wrap->env(),
-                                 async_wrap->get_async_id()) {}
-
 }  // namespace node
 
 #endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

src/base_object-inl.h

@@ -32,40 +32,6 @@
 
 namespace node {
 
-BaseObject::BaseObject(Environment* env, v8::Local<v8::Object> object)
-    : persistent_handle_(env->isolate(), object), env_(env) {
-  CHECK_EQ(false, object.IsEmpty());
-  CHECK_GT(object->InternalFieldCount(), 0);
-  object->SetAlignedPointerInInternalField(
-      BaseObject::kSlot,
-      static_cast<void*>(this));
-  env->AddCleanupHook(DeleteMe, static_cast<void*>(this));
-  env->modify_base_object_count(1);
-}
-
-BaseObject::~BaseObject() {
-  env()->modify_base_object_count(-1);
-  env()->RemoveCleanupHook(DeleteMe, static_cast<void*>(this));
-
-  if (UNLIKELY(has_pointer_data())) {
-    PointerData* metadata = pointer_data();
-    CHECK_EQ(metadata->strong_ptr_count, 0);
-    metadata->self = nullptr;
-    if (metadata->weak_ptr_count == 0)
-      delete metadata;
-  }
-
-  if (persistent_handle_.IsEmpty()) {
-    // This most likely happened because the weak callback below cleared it.
-    return;
-  }
-
-  {
-    v8::HandleScope handle_scope(env()->isolate());
-    object()->SetAlignedPointerInInternalField(BaseObject::kSlot, nullptr);
-  }
-}
-
 void BaseObject::Detach() {
   CHECK_GT(pointer_data()->strong_ptr_count, 0);
   pointer_data()->is_detached = true;
@@ -107,28 +73,6 @@ T* BaseObject::FromJSObject(v8::Local<v8::Value> object) {
   return static_cast<T*>(FromJSObject(object));
 }
 
-
-void BaseObject::MakeWeak() {
-  if (has_pointer_data()) {
-    pointer_data()->wants_weak_jsobj = true;
-    if (pointer_data()->strong_ptr_count > 0) return;
-  }
-
-  persistent_handle_.SetWeak(
-      this,
-      [](const v8::WeakCallbackInfo<BaseObject>& data) {
-        BaseObject* obj = data.GetParameter();
-        // Clear the persistent handle so that ~BaseObject() doesn't attempt
-        // to mess with internal fields, since the JS object may have
-        // transitioned into an invalid state.
-        // Refs: https://github.com/nodejs/node/issues/18897
-        obj->persistent_handle_.Reset();
-        CHECK_IMPLIES(obj->has_pointer_data(),
-                      obj->pointer_data()->strong_ptr_count == 0);
-        obj->OnGCCollect();
-      }, v8::WeakCallbackType::kParameter);
-}
-
 void BaseObject::OnGCCollect() {
   delete this;
 }
@@ -148,23 +92,6 @@ bool BaseObject::IsWeakOrDetached() const {
   return pd->wants_weak_jsobj || pd->is_detached;
 }
 
-void BaseObject::LazilyInitializedJSTemplateConstructor(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  DCHECK(args.IsConstructCall());
-  DCHECK_GT(args.This()->InternalFieldCount(), 0);
-  args.This()->SetAlignedPointerInInternalField(BaseObject::kSlot, nullptr);
-}
-
-v8::Local<v8::FunctionTemplate>
-BaseObject::MakeLazilyInitializedJSTemplate(Environment* env) {
-  v8::Local<v8::FunctionTemplate> t =
-      env->NewFunctionTemplate(LazilyInitializedJSTemplateConstructor);
-  t->Inherit(BaseObject::GetConstructorTemplate(env));
-  t->InstanceTemplate()->SetInternalFieldCount(
-      BaseObject::kInternalFieldCount);
-  return t;
-}
-
 template <int Field>
 void BaseObject::InternalFieldGet(
     v8::Local<v8::String> property,
@@ -185,37 +112,6 @@ bool BaseObject::has_pointer_data() const {
   return pointer_data_ != nullptr;
 }
 
-BaseObject::PointerData* BaseObject::pointer_data() {
-  if (!has_pointer_data()) {
-    PointerData* metadata = new PointerData();
-    metadata->wants_weak_jsobj = persistent_handle_.IsWeak();
-    metadata->self = this;
-    pointer_data_ = metadata;
-  }
-  CHECK(has_pointer_data());
-  return pointer_data_;
-}
-
-void BaseObject::decrease_refcount() {
-  CHECK(has_pointer_data());
-  PointerData* metadata = pointer_data();
-  CHECK_GT(metadata->strong_ptr_count, 0);
-  unsigned int new_refcount = --metadata->strong_ptr_count;
-  if (new_refcount == 0) {
-    if (metadata->is_detached) {
-      OnGCCollect();
-    } else if (metadata->wants_weak_jsobj && !persistent_handle_.IsEmpty()) {
-      MakeWeak();
-    }
-  }
-}
-
-void BaseObject::increase_refcount() {
-  unsigned int prev_refcount = pointer_data()->strong_ptr_count++;
-  if (prev_refcount == 0 && !persistent_handle_.IsEmpty())
-    persistent_handle_.ClearWeak();
-}
-
 template <typename T, bool kIsWeak>
 BaseObject::PointerData*
 BaseObjectPtrImpl<T, kIsWeak>::pointer_data() const {

src/base_object.h

@@ -44,8 +44,8 @@ class BaseObject : public MemoryRetainer {
 
   // Associates this object with `object`. It uses the 0th internal field for
   // that, and in particular aborts if there is no such field.
-  inline BaseObject(Environment* env, v8::Local<v8::Object> object);
-  inline ~BaseObject() override;
+  BaseObject(Environment* env, v8::Local<v8::Object> object);
+  ~BaseObject() override;
 
   BaseObject() = delete;
 
@@ -65,7 +65,7 @@ class BaseObject : public MemoryRetainer {
   // was also passed to the `BaseObject()` constructor initially.
   // This may return `nullptr` if the C++ object has not been constructed yet,
   // e.g. when the JS object used `MakeLazilyInitializedJSTemplate`.
-  static inline void LazilyInitializedJSTemplateConstructor(
+  static void LazilyInitializedJSTemplateConstructor(
       const v8::FunctionCallbackInfo<v8::Value>& args);
   static inline BaseObject* FromJSObject(v8::Local<v8::Value> object);
   template <typename T>
@@ -74,7 +74,7 @@ class BaseObject : public MemoryRetainer {
   // Make the `v8::Global` a weak reference and, `delete` this object once
   // the JS object has been garbage collected and there are no (strong)
   // BaseObjectPtr references to it.
-  inline void MakeWeak();
+  void MakeWeak();
 
   // Undo `MakeWeak()`, i.e. turn this into a strong reference that is a GC
   // root and will not be touched by the garbage collector.
@@ -88,7 +88,7 @@ class BaseObject : public MemoryRetainer {
   // Utility to create a FunctionTemplate with one internal field (used for
   // the `BaseObject*` pointer) and a constructor that initializes that field
   // to `nullptr`.
-  static inline v8::Local<v8::FunctionTemplate> MakeLazilyInitializedJSTemplate(
+  static v8::Local<v8::FunctionTemplate> MakeLazilyInitializedJSTemplate(
       Environment* env);
 
   // Setter/Getter pair for internal fields that can be passed to SetAccessor.
@@ -202,11 +202,11 @@ class BaseObject : public MemoryRetainer {
   inline bool has_pointer_data() const;
   // This creates a PointerData struct if none was associated with this
   // BaseObject before.
-  inline PointerData* pointer_data();
+  PointerData* pointer_data();
 
   // Functions that adjust the strong pointer count.
-  inline void decrease_refcount();
-  inline void increase_refcount();
+  void decrease_refcount();
+  void increase_refcount();
 
   Environment* env_;
   PointerData* pointer_data_ = nullptr;