storage/public/mozIStorageVacuumParticipant.idl@ca08bd8f51b2 (annotated)
storage/public/mozIStorageVacuumParticipant.idl
Wed, 31 Dec 2014 06:55:46 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:55:46 +0100
- changeset 1
- ca08bd8f51b2
- permissions
- -rw-r--r--
Added tag TORBROWSER_REPLICA for changeset 6474c204b198
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ : |
| michael@0 | 3 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #include "nsISupports.idl" |
| michael@0 | 8 | |
| michael@0 | 9 | interface mozIStorageConnection; |
| michael@0 | 10 | |
| michael@0 | 11 | /** |
| michael@0 | 12 | * This interface contains the information that the Storage service needs to |
| michael@0 | 13 | * vacuum a database. This interface is created as a service through the |
| michael@0 | 14 | * category manager with the category "vacuum-participant". |
| michael@0 | 15 | * Please see https://developer.mozilla.org/en/mozIStorageVacuumParticipant for |
| michael@0 | 16 | * more information. |
| michael@0 | 17 | */ |
| michael@0 | 18 | [scriptable, uuid(8f367508-1d9a-4d3f-be0c-ac11b6dd7dbf)] |
| michael@0 | 19 | interface mozIStorageVacuumParticipant : nsISupports { |
| michael@0 | 20 | /** |
| michael@0 | 21 | * The expected page size in bytes for the database. The vacuum manager will |
| michael@0 | 22 | * try to correct the page size during idle based on this value. |
| michael@0 | 23 | * |
| michael@0 | 24 | * @note If the database is using the WAL journal mode, the page size won't |
| michael@0 | 25 | * be changed to the requested value. See bug 634374. |
| michael@0 | 26 | * @note Valid page size values are powers of 2 between 512 and 65536. |
| michael@0 | 27 | * The suggested value is mozIStorageConnection::defaultPageSize. |
| michael@0 | 28 | */ |
| michael@0 | 29 | readonly attribute long expectedDatabasePageSize; |
| michael@0 | 30 | |
| michael@0 | 31 | /** |
| michael@0 | 32 | * Connection to the database file to be vacuumed. |
| michael@0 | 33 | */ |
| michael@0 | 34 | readonly attribute mozIStorageConnection databaseConnection; |
| michael@0 | 35 | |
| michael@0 | 36 | /** |
| michael@0 | 37 | * Notifies when a vacuum operation begins. Listeners should avoid using the |
| michael@0 | 38 | * database till onEndVacuum is received. |
| michael@0 | 39 | * |
| michael@0 | 40 | * @return true to proceed with the vacuum, false if the participant wants to |
| michael@0 | 41 | * opt-out for now, it will be retried later. Useful when participant |
| michael@0 | 42 | * is running some other heavy operation that can't be interrupted. |
| michael@0 | 43 | * |
| michael@0 | 44 | * @note When a vacuum operation starts or ends it will also dispatch a global |
| michael@0 | 45 | * "heavy-io-task" notification through the observer service with the |
| michael@0 | 46 | * data argument being either "vacuum-begin" or "vacuum-end". |
| michael@0 | 47 | */ |
| michael@0 | 48 | boolean onBeginVacuum(); |
| michael@0 | 49 | |
| michael@0 | 50 | /** |
| michael@0 | 51 | * Notifies when a vacuum operation ends. |
| michael@0 | 52 | * |
| michael@0 | 53 | * @param aSucceeded |
| michael@0 | 54 | * reports if the vacuum succeeded or failed. |
| michael@0 | 55 | */ |
| michael@0 | 56 | void onEndVacuum(in boolean aSucceeded); |
| michael@0 | 57 | }; |
