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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gin/function_template.h"
namespace gin {
namespace internal {
CallbackHolderBase::CallbackHolderBase(v8::Isolate* isolate)
: v8_ref_(isolate, v8::External::New(isolate, this)) {
v8_ref_.SetWeak(this, &CallbackHolderBase::FirstWeakCallback,
v8::WeakCallbackType::kParameter);
}
CallbackHolderBase::~CallbackHolderBase() {
DCHECK(v8_ref_.IsEmpty());
}
v8::Local<v8::External> CallbackHolderBase::GetHandle(v8::Isolate* isolate) {
return v8::Local<v8::External>::New(isolate, v8_ref_);
}
// static
void CallbackHolderBase::FirstWeakCallback(
const v8::WeakCallbackInfo<CallbackHolderBase>& data) {
data.GetParameter()->v8_ref_.Reset();
data.SetSecondPassCallback(SecondWeakCallback);
}
// static
void CallbackHolderBase::SecondWeakCallback(
const v8::WeakCallbackInfo<CallbackHolderBase>& data) {
delete data.GetParameter();
}
} // namespace internal
} // namespace gin
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