37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
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// Copyright 2019 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE.chromium file.
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#include "shell/common/gin_helper/function_template.h"
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namespace gin_helper {
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CallbackHolderBase::CallbackHolderBase(v8::Isolate* isolate)
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: v8_ref_(isolate, v8::External::New(isolate, this)) {
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v8_ref_.SetWeak(this, &CallbackHolderBase::FirstWeakCallback,
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v8::WeakCallbackType::kParameter);
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}
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CallbackHolderBase::~CallbackHolderBase() {
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DCHECK(v8_ref_.IsEmpty());
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}
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v8::Local<v8::External> CallbackHolderBase::GetHandle(v8::Isolate* isolate) {
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return v8::Local<v8::External>::New(isolate, v8_ref_);
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}
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// static
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void CallbackHolderBase::FirstWeakCallback(
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const v8::WeakCallbackInfo<CallbackHolderBase>& data) {
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data.GetParameter()->v8_ref_.Reset();
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data.SetSecondPassCallback(SecondWeakCallback);
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}
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// static
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void CallbackHolderBase::SecondWeakCallback(
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const v8::WeakCallbackInfo<CallbackHolderBase>& data) {
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delete data.GetParameter();
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}
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} // namespace gin_helper
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