gecko-dev/dom/storage/PBackgroundSessionStorageManager.ipdl
Tom Tung 45a97b5b83 Bug 1654080 - Use PBackground for syncing SessionStorageCache and use LSWriteOptimizer to send data changes; r=dom-workers-and-storage-reviewers,janv,nika
This patch does:
- Use LSWriteOptimizer
- Remove SessionStorageService since it's unused.
- Move IPC from PContent to PBackground
(by SessionStorageManager{Child, Parent} and SessionStorageCache{Child, Parent}).
- Extract SessionStorageManagerBase and add PBackgroundSessionStorageManager.
- Expose a getter function to get a BackgroundParentManager for top context id
on the parent.

IPC
- Before this patch:
  - Copy from parent while loading a document.
    - Mark cache entry on the parent process as loaded by the child id.
  - Update change on checkpoint.
  - Unmark cache entry on the parent process as unloaded for the child id while
  the parent actor is destorying.
- After this patch:
  - Sync IPC load in the first SessionStorage operation.
  - Update change on checkpoint

`BackgroundSessionStorageManager`'s lifecycle on the parent process.
- Create by `SessionStorageManagerParent` and register to the `sManagers`.
- Hold by `SessionStorageManagerParent` and `sManagers`.
- Remove from the `sManagers` while the corresponding `BrowsingContext` is
destructed (on the parent process).

Depends on D89341

Differential Revision: https://phabricator.services.mozilla.com/D89342
2020-10-14 00:19:33 +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 PBackground;
include protocol PBackgroundSessionStorageCache;
namespace mozilla {
namespace dom {
sync refcounted protocol PBackgroundSessionStorageManager
{
manager PBackground;
manages PBackgroundSessionStorageCache;
parent:
async PBackgroundSessionStorageCache(nsCString aOriginAttrs, nsCString aOriginKey);
async DeleteMe();
child:
async __delete__();
};
} // namespace dom
} // namespace mozilla