Home | History | Annotate | Download | only in gin 
      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "gin/function_template.h"
      6 
      7 namespace gin {
      8 
      9 namespace internal {
     10 
     11 CallbackHolderBase::CallbackHolderBase(v8::Isolate* isolate)
     12     : v8_ref_(isolate, v8::External::New(isolate, this)) {
     13   v8_ref_.SetWeak(this, &CallbackHolderBase::WeakCallback);
     14 }
     15 
     16 CallbackHolderBase::~CallbackHolderBase() {
     17   DCHECK(v8_ref_.IsEmpty());
     18 }
     19 
     20 v8::Handle<v8::External> CallbackHolderBase::GetHandle(v8::Isolate* isolate) {
     21   return v8::Local<v8::External>::New(isolate, v8_ref_);
     22 }
     23 
     24 // static
     25 void CallbackHolderBase::WeakCallback(
     26     const v8::WeakCallbackData<v8::External, CallbackHolderBase>& data) {
     27   data.GetParameter()->v8_ref_.Reset();
     28   delete data.GetParameter();
     29 }
     30 
     31 }  // namespace internal
     32 
     33 }  // namespace gin
     34