gecko-dev/dom/indexedDB/PBackgroundIDBCursor.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 PBackgroundIDBTransaction;
include protocol PBackgroundIDBVersionChangeTransaction;
include protocol PBackgroundMutableFile;
include PBackgroundIDBSharedTypes;
include "mozilla/dom/indexedDB/SerializationHelpers.h";
include "mozilla/dom/indexedDB/ActorsChild.h";
using struct mozilla::void_t from "mozilla/ipc/IPCCore.h";
using class mozilla::dom::indexedDB::Key
from "mozilla/dom/indexedDB/Key.h";
namespace mozilla {
namespace dom {
namespace indexedDB {
struct ContinueParams
{
Key key;
};
struct ContinuePrimaryKeyParams
{
Key key;
Key primaryKey;
};
struct AdvanceParams
{
uint32_t count;
};
union CursorRequestParams
{
ContinueParams;
ContinuePrimaryKeyParams;
AdvanceParams;
};
struct ObjectStoreCursorResponse
{
Key key;
SerializedStructuredCloneReadInfo cloneInfo;
};
struct ObjectStoreKeyCursorResponse
{
Key key;
};
struct IndexCursorResponse
{
Key key;
Key sortKey;
Key objectKey;
SerializedStructuredCloneReadInfo cloneInfo;
};
struct IndexKeyCursorResponse
{
Key key;
Key sortKey;
Key objectKey;
};
// TODO: All cursor responses must be arrays!
union CursorResponse
{
void_t;
nsresult;
ObjectStoreCursorResponse[];
ObjectStoreKeyCursorResponse[];
IndexCursorResponse[];
IndexKeyCursorResponse[];
};
[ChildImpl="indexedDB::BackgroundCursorChildBase", ParentImpl=virtual]
protocol PBackgroundIDBCursor
{
manager PBackgroundIDBTransaction or PBackgroundIDBVersionChangeTransaction;
parent:
async DeleteMe();
async Continue(CursorRequestParams params, Key currentKey,
Key currentObjectStoreKey);
child:
async __delete__();
async Response(CursorResponse response);
};
} // namespace indexedDB
} // namespace dom
} // namespace mozilla