mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 20:47:44 +00:00
58 lines
2.2 KiB
Plaintext
58 lines
2.2 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
|
|
* 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 "nsISupports.idl"
|
|
|
|
interface mozIStorageConnection;
|
|
|
|
/**
|
|
* This interface contains the information that the Storage service needs to
|
|
* vacuum a database. This interface is created as a service through the
|
|
* category manager with the category "vacuum-participant".
|
|
* Please see https://developer.mozilla.org/en/mozIStorageVacuumParticipant for
|
|
* more information.
|
|
*/
|
|
[scriptable, uuid(8f367508-1d9a-4d3f-be0c-ac11b6dd7dbf)]
|
|
interface mozIStorageVacuumParticipant : nsISupports {
|
|
/**
|
|
* The expected page size in bytes for the database. The vacuum manager will
|
|
* try to correct the page size during idle based on this value.
|
|
*
|
|
* @note If the database is using the WAL journal mode, the page size won't
|
|
* be changed to the requested value. See bug 634374.
|
|
* @note Valid page size values are powers of 2 between 512 and 65536.
|
|
* The suggested value is mozIStorageConnection::defaultPageSize.
|
|
*/
|
|
readonly attribute long expectedDatabasePageSize;
|
|
|
|
/**
|
|
* Connection to the database file to be vacuumed.
|
|
*/
|
|
readonly attribute mozIStorageConnection databaseConnection;
|
|
|
|
/**
|
|
* Notifies when a vacuum operation begins. Listeners should avoid using the
|
|
* database till onEndVacuum is received.
|
|
*
|
|
* @return true to proceed with the vacuum, false if the participant wants to
|
|
* opt-out for now, it will be retried later. Useful when participant
|
|
* is running some other heavy operation that can't be interrupted.
|
|
*
|
|
* @note When a vacuum operation starts or ends it will also dispatch a global
|
|
* "heavy-io-task" notification through the observer service with the
|
|
* data argument being either "vacuum-begin" or "vacuum-end".
|
|
*/
|
|
boolean onBeginVacuum();
|
|
|
|
/**
|
|
* Notifies when a vacuum operation ends.
|
|
*
|
|
* @param aSucceeded
|
|
* reports if the vacuum succeeded or failed.
|
|
*/
|
|
void onEndVacuum(in boolean aSucceeded);
|
|
};
|