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42b7f1a58c
This prevents copies and avoids the hack we have to avoid this, which
right now is using nsDependent{C,}String.
Non-virtual actors can still use `nsString` if they need to on the
receiving end.
Differential Revision: https://phabricator.services.mozilla.com/D152519
87 lines
2.5 KiB
C++
87 lines
2.5 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 "TemporaryIPCBlobChild.h"
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#include "mozilla/dom/BlobImpl.h"
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#include "mozilla/dom/MutableBlobStorage.h"
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#include "mozilla/dom/IPCBlobUtils.h"
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#include <private/pprio.h>
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namespace mozilla::dom {
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TemporaryIPCBlobChild::TemporaryIPCBlobChild(MutableBlobStorage* aStorage)
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: mMutableBlobStorage(aStorage), mActive(true) {
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MOZ_ASSERT(aStorage);
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}
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TemporaryIPCBlobChild::~TemporaryIPCBlobChild() = default;
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mozilla::ipc::IPCResult TemporaryIPCBlobChild::RecvFileDesc(
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const FileDescriptor& aFD) {
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MOZ_ASSERT(mActive);
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auto rawFD = aFD.ClonePlatformHandle();
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PRFileDesc* prfile = PR_ImportFile(PROsfd(rawFD.release()));
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mMutableBlobStorage->TemporaryFileCreated(prfile);
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mMutableBlobStorage = nullptr;
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return IPC_OK();
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}
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mozilla::ipc::IPCResult TemporaryIPCBlobChild::Recv__delete__(
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const IPCBlobOrError& aBlobOrError) {
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mActive = false;
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mMutableBlobStorage = nullptr;
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if (aBlobOrError.type() == IPCBlobOrError::TIPCBlob) {
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// This must be always deserialized.
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RefPtr<BlobImpl> blobImpl =
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IPCBlobUtils::Deserialize(aBlobOrError.get_IPCBlob());
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MOZ_ASSERT(blobImpl);
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if (mCallback) {
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mCallback->OperationSucceeded(blobImpl);
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}
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} else if (mCallback) {
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MOZ_ASSERT(aBlobOrError.type() == IPCBlobOrError::Tnsresult);
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mCallback->OperationFailed(aBlobOrError.get_nsresult());
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}
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mCallback = nullptr;
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return IPC_OK();
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}
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void TemporaryIPCBlobChild::ActorDestroy(ActorDestroyReason aWhy) {
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mActive = false;
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mMutableBlobStorage = nullptr;
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if (mCallback) {
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mCallback->OperationFailed(NS_ERROR_FAILURE);
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mCallback = nullptr;
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}
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}
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void TemporaryIPCBlobChild::AskForBlob(TemporaryIPCBlobChildCallback* aCallback,
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const nsACString& aContentType,
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PRFileDesc* aFD) {
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MOZ_ASSERT(aCallback);
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MOZ_ASSERT(!mCallback);
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if (!mActive) {
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aCallback->OperationFailed(NS_ERROR_FAILURE);
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return;
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}
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FileDescriptor fdd = FileDescriptor(
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FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(aFD)));
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mCallback = aCallback;
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SendOperationDone(aContentType, fdd);
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}
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} // namespace mozilla::dom
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