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506dfe6ea3
In JS StructuredClone BufferList<SystemAllocPolicy> is typedef'd to JSStructuredCloneData and use everywhere in gecko that stores structured clone data. This patch changed some raw pointers to UniquePtr<JSStructuredCloneData> and some to stack allocated JSStructuredCloneData for better life time management. Some parameters or methods are deleted because of changing to the new data structure. MessagePortMessage now has the exactly same structure with ClonedMessageData. Maybe in the future they can be consolidated. MozReview-Commit-ID: 1IY9p5eKLgv
132 lines
3.2 KiB
C++
132 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "StructuredCloneData.h"
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#include "nsIDOMDOMException.h"
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#include "nsIMutable.h"
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#include "nsIXPConnect.h"
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#include "ipc/IPCMessageUtils.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/BlobBinding.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/dom/ToJSValue.h"
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#include "nsContentUtils.h"
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#include "nsJSEnvironment.h"
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#include "MainThreadUtils.h"
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#include "StructuredCloneTags.h"
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#include "jsapi.h"
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namespace mozilla {
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namespace dom {
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namespace ipc {
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bool
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StructuredCloneData::Copy(const StructuredCloneData& aData)
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{
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if (!aData.mInitialized) {
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return true;
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}
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if (aData.SharedData()) {
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mSharedData = aData.SharedData();
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} else {
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mSharedData =
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SharedJSAllocatedData::CreateFromExternalData(aData.Data());
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NS_ENSURE_TRUE(mSharedData, false);
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}
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PortIdentifiers().AppendElements(aData.PortIdentifiers());
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MOZ_ASSERT(BlobImpls().IsEmpty());
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BlobImpls().AppendElements(aData.BlobImpls());
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MOZ_ASSERT(GetSurfaces().IsEmpty());
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mInitialized = true;
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return true;
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}
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void
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StructuredCloneData::Read(JSContext* aCx,
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JS::MutableHandle<JS::Value> aValue,
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ErrorResult &aRv)
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{
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MOZ_ASSERT(mInitialized);
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nsIGlobalObject *global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
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MOZ_ASSERT(global);
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ReadFromBuffer(global, aCx, Data(), aValue, aRv);
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}
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void
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StructuredCloneData::Write(JSContext* aCx,
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JS::Handle<JS::Value> aValue,
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ErrorResult &aRv)
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{
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Write(aCx, aValue, JS::UndefinedHandleValue, aRv);
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}
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void
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StructuredCloneData::Write(JSContext* aCx,
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JS::Handle<JS::Value> aValue,
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JS::Handle<JS::Value> aTransfer,
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ErrorResult &aRv)
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{
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MOZ_ASSERT(!mInitialized);
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StructuredCloneHolder::Write(aCx, aValue, aTransfer, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return;
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}
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JSStructuredCloneData data;
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mBuffer->abandon();
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mBuffer->steal(&data);
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mBuffer = nullptr;
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mSharedData = new SharedJSAllocatedData(Move(data));
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mInitialized = true;
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}
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void
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StructuredCloneData::WriteIPCParams(IPC::Message* aMsg) const
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{
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WriteParam(aMsg, Data());
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}
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bool
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StructuredCloneData::ReadIPCParams(const IPC::Message* aMsg,
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PickleIterator* aIter)
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{
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MOZ_ASSERT(!mInitialized);
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JSStructuredCloneData data;
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if (!ReadParam(aMsg, aIter, &data)) {
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return false;
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}
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mSharedData = new SharedJSAllocatedData(Move(data));
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mInitialized = true;
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return true;
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}
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bool
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StructuredCloneData::CopyExternalData(const char* aData,
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size_t aDataLength)
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{
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MOZ_ASSERT(!mInitialized);
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mSharedData = SharedJSAllocatedData::CreateFromExternalData(aData,
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aDataLength);
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NS_ENSURE_TRUE(mSharedData, false);
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mInitialized = true;
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return true;
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}
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} // namespace ipc
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} // namespace dom
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} // namespace mozilla
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