83777ac83f
* refactor: update gin_helper/function_template Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: crash in Node.js Worker threads Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> --------- Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com> Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>
84 lines
3 KiB
C++
84 lines
3 KiB
C++
// 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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#include "base/observer_list.h"
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#include "base/strings/strcat.h"
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namespace gin_helper {
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CallbackHolderBase::DisposeObserver::DisposeObserver(
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gin::PerIsolateData* per_isolate_data,
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CallbackHolderBase* holder)
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: per_isolate_data_(per_isolate_data), holder_(*holder) {
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if (per_isolate_data_)
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per_isolate_data_->AddDisposeObserver(this);
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}
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CallbackHolderBase::DisposeObserver::~DisposeObserver() {
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if (per_isolate_data_)
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per_isolate_data_->RemoveDisposeObserver(this);
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}
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void CallbackHolderBase::DisposeObserver::OnBeforeDispose(
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v8::Isolate* isolate) {
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holder_->v8_ref_.Reset();
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}
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void CallbackHolderBase::DisposeObserver::OnDisposed() {
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// The holder contains the observer, so the observer is destroyed here also.
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delete &holder_.get();
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}
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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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dispose_observer_(gin::PerIsolateData::From(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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void ThrowConversionError(gin::Arguments* args,
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const InvokerOptions& invoker_options,
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size_t index) {
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if (index == 0 && invoker_options.holder_is_first_argument) {
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// Failed to get the appropriate `this` object. This can happen if a
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// method is invoked using Function.prototype.[call|apply] and passed an
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// invalid (or null) `this` argument.
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std::string error =
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invoker_options.holder_type
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? base::StrCat({"Illegal invocation: Function must be "
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"called on an object of type ",
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invoker_options.holder_type})
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: "Illegal invocation";
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args->ThrowTypeError(error);
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} else {
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// Otherwise, this failed parsing on a different argument.
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// Arguments::ThrowError() will try to include appropriate information.
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// Ideally we would include the expected c++ type in the error message
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// here, too (which we can access via typeid(ArgType).name()), however we
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// compile with no-rtti, which disables typeid.
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args->ThrowError();
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}
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}
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} // namespace gin_helper
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