Removed need for NAN_GC_CALLBACK

Author: kkoopa

nan.h

@@ -595,29 +595,43 @@ class TryCatch {
     object->SetAlignedPointerInInternalField(index, value);
   }
 
-# define NAN_GC_CALLBACK(name)                                                 \
-    void name(v8::Isolate *isolate, v8::GCType type, v8::GCCallbackFlags flags)
+  typedef void (*GCCallback)(v8::GCType type, v8::GCCallbackFlags flags);
 
+namespace imp {
+  template<GCCallback F>
+  class GCCallback {
+   public:
+    static void call(
+        v8::Isolate *isolate, v8::GCType type, v8::GCCallbackFlags flags) {
+      F(type, flags);
+    }
+  };
+}
+
+  template<GCCallback F>
   NAN_INLINE void AddGCEpilogueCallback(
-      v8::Isolate::GCEpilogueCallback callback
-    , v8::GCType gc_type_filter = v8::kGCTypeAll) {
-    v8::Isolate::GetCurrent()->AddGCEpilogueCallback(callback, gc_type_filter);
+    v8::GCType gc_type_filter = v8::kGCTypeAll) {
+    v8::Isolate::GetCurrent()->AddGCEpilogueCallback(
+        imp::GCCallback<F>::call, gc_type_filter);
   }
 
-  NAN_INLINE void RemoveGCEpilogueCallback(
-      v8::Isolate::GCEpilogueCallback callback) {
-    v8::Isolate::GetCurrent()->RemoveGCEpilogueCallback(callback);
+  template<GCCallback F>
+  NAN_INLINE void RemoveGCEpilogueCallback() {
+    v8::Isolate::GetCurrent()->RemoveGCEpilogueCallback(
+        imp::GCCallback<F>::call);
   }
 
+  template<GCCallback F>
   NAN_INLINE void AddGCPrologueCallback(
-      v8::Isolate::GCPrologueCallback callback
-    , v8::GCType gc_type_filter = v8::kGCTypeAll) {
-    v8::Isolate::GetCurrent()->AddGCPrologueCallback(callback, gc_type_filter);
+    v8::GCType gc_type_filter = v8::kGCTypeAll) {
+    v8::Isolate::GetCurrent()->AddGCPrologueCallback(
+        imp::GCCallback<F>::call, gc_type_filter);
   }
 
-  NAN_INLINE void RemoveGCPrologueCallback(
-      v8::Isolate::GCPrologueCallback callback) {
-    v8::Isolate::GetCurrent()->RemoveGCPrologueCallback(callback);
+  template<GCCallback F>
+  NAN_INLINE void RemoveGCPrologueCallback() {
+    v8::Isolate::GetCurrent()->RemoveGCPrologueCallback(
+        imp::GCCallback<F>::call);
   }
 
   NAN_INLINE void GetHeapStatistics(
@@ -981,26 +995,25 @@ class Utf8String {
     object->SetPointerInInternalField(index, value);
   }
 
-# define NAN_GC_CALLBACK(name)                                                 \
-    void name(v8::GCType type, v8::GCCallbackFlags flags)
+  typedef void (*GCCallback)(v8::GCType type, v8::GCCallbackFlags flags);
 
+  template<GCCallback F>
   NAN_INLINE void AddGCEpilogueCallback(
-    v8::GCEpilogueCallback callback
-  , v8::GCType gc_type_filter = v8::kGCTypeAll) {
-    v8::V8::AddGCEpilogueCallback(callback, gc_type_filter);
+    v8::GCType gc_type_filter = v8::kGCTypeAll) {
+    v8::V8::AddGCEpilogueCallback(F, gc_type_filter);
   }
-  NAN_INLINE void RemoveGCEpilogueCallback(
-    v8::GCEpilogueCallback callback) {
-    v8::V8::RemoveGCEpilogueCallback(callback);
+  template<GCCallback F>
+  NAN_INLINE void RemoveGCEpilogueCallback() {
+    v8::V8::RemoveGCEpilogueCallback(F);
   }
+  template<GCCallback F>
   NAN_INLINE void AddGCPrologueCallback(
-    v8::GCPrologueCallback callback
-  , v8::GCType gc_type_filter = v8::kGCTypeAll) {
-    v8::V8::AddGCPrologueCallback(callback, gc_type_filter);
+    v8::GCType gc_type_filter = v8::kGCTypeAll) {
+    v8::V8::AddGCPrologueCallback(F, gc_type_filter);
   }
-  NAN_INLINE void RemoveGCPrologueCallback(
-    v8::GCPrologueCallback callback) {
-    v8::V8::RemoveGCPrologueCallback(callback);
+  template<GCCallback F>
+  NAN_INLINE void RemoveGCPrologueCallback() {
+    v8::V8::RemoveGCPrologueCallback(F);
   }
   NAN_INLINE void GetHeapStatistics(
     v8::HeapStatistics *heap_statistics) {
@@ -1341,6 +1354,8 @@ typedef void NAN_INDEX_QUERY_RETURN_TYPE;
     Nan::NAN_INDEX_QUERY_RETURN_TYPE name(                                     \
         uint32_t index                                                         \
       , Nan::NAN_INDEX_QUERY_ARGS_TYPE info)
+# define NAN_GC_CALLBACK(name)                                                 \
+    void name(v8::GCType type, v8::GCCallbackFlags flags)
 
 class Callback {
  public:

test/cpp/gc.cpp

@@ -22,25 +22,27 @@ NAN_GC_CALLBACK(gcEpilogueCallback) {
 }
 
 NAN_METHOD(Hook) {
-  AddGCPrologueCallback(gcPrologueCallback);
-  AddGCEpilogueCallback(gcEpilogueCallback);
+  AddGCPrologueCallback<gcPrologueCallback>();
+  AddGCEpilogueCallback<gcEpilogueCallback>();
   info.GetReturnValue().SetUndefined();
 }
 
 NAN_METHOD(Check) {
   HandleScope scope;
   info.GetReturnValue().Set(
       New(prologue_called && epilogue_called));
+  RemoveGCPrologueCallback<gcPrologueCallback>();
+  RemoveGCEpilogueCallback<gcEpilogueCallback>();
 }
 
 NAN_MODULE_INIT(Init) {
   Set(target
     , New<v8::String>("hook").ToLocalChecked()
-    , New<v8::FunctionTemplate>(Hook)->GetFunction()
+    , GetFunction(New<v8::FunctionTemplate>(Hook)).ToLocalChecked()
   );
   Set(target
     , New<v8::String>("check").ToLocalChecked()
-    , New<v8::FunctionTemplate>(Check)->GetFunction()
+    , GetFunction(New<v8::FunctionTemplate>(Check)).ToLocalChecked()
   );
 }