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