gin/function_template.cc

   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