gecko-dev/dom/filehandle/PBackgroundFileHandle.ipdl
Nika Layzell 95a883d65d Bug 1754004 - Part 3: Move RemoteLazyInputStream to its own toplevel protocol, r=asuth,necko-reviewers,dragana
This is a complete rewrite of RemoteLazyInputStream to run off of its own
toplevel protocol, rather than being managed by other protocols like
PBackground or PContent. This should improve performance thanks to no longer
needing to operate on a main or worker thread, and due to no longer needing the
migration step for the stream actor.

This also acts as a step towards no longer requiring a manager actor to
serialize input streams, as the type is now actor-agnostic, and should support
being sent over IPC between any pair of processes.

Differential Revision: https://phabricator.services.mozilla.com/D141040
2022-05-13 14:16:10 +00:00

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
include protocol PBackgroundFileRequest;
include protocol PBackgroundMutableFile;
include IPCBlob;
include "mozilla/dom/indexedDB/ActorsChild.h";
namespace mozilla {
namespace dom {
struct FileRequestGetMetadataParams
{
bool size;
bool lastModified;
};
struct FileRequestReadParams
{
uint64_t offset;
uint64_t size;
};
struct FileRequestStringData
{
nsCString string;
};
struct FileRequestBlobData
{
IPCBlob blob;
};
union FileRequestData
{
FileRequestStringData;
FileRequestBlobData;
};
struct FileRequestWriteParams
{
uint64_t offset;
FileRequestData data;
uint64_t dataLength;
};
struct FileRequestTruncateParams
{
uint64_t offset;
};
struct FileRequestFlushParams
{
};
union FileRequestParams
{
FileRequestGetMetadataParams;
FileRequestReadParams;
FileRequestWriteParams;
FileRequestTruncateParams;
FileRequestFlushParams;
};
[ManualDealloc, ChildImpl="indexedDB::BackgroundFileHandleChild", ParentImpl=virtual]
protocol PBackgroundFileHandle
{
manager PBackgroundMutableFile;
manages PBackgroundFileRequest;
parent:
async DeleteMe();
async Finish();
async Abort();
async PBackgroundFileRequest(FileRequestParams params);
child:
async __delete__();
async Complete(bool aborted);
};
} // namespace dom
} // namespace mozilla