netwerk/cache2/nsICacheStorage.idl@ac0c01689b40 (annotated)
netwerk/cache2/nsICacheStorage.idl
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #include "nsISupports.idl" |
| michael@0 | 6 | |
| michael@0 | 7 | interface nsIURI; |
| michael@0 | 8 | interface nsICacheEntryOpenCallback; |
| michael@0 | 9 | interface nsICacheEntryDoomCallback; |
| michael@0 | 10 | interface nsICacheStorageVisitor; |
| michael@0 | 11 | |
| michael@0 | 12 | /** |
| michael@0 | 13 | * Representation of a cache storage. There can be just-in-mem, |
| michael@0 | 14 | * in-mem+on-disk, in-mem+on-disk+app-cache or just a specific |
| michael@0 | 15 | * app-cache storage. |
| michael@0 | 16 | */ |
| michael@0 | 17 | [scriptable, uuid(d983ba0c-433f-4017-abc1-93af737c82e4)] |
| michael@0 | 18 | interface nsICacheStorage : nsISupports |
| michael@0 | 19 | { |
| michael@0 | 20 | /** |
| michael@0 | 21 | * Placeholder for specifying "no special flags" during open. |
| michael@0 | 22 | */ |
| michael@0 | 23 | const uint32_t OPEN_NORMALLY = 0; |
| michael@0 | 24 | |
| michael@0 | 25 | /** |
| michael@0 | 26 | * Rewrite any existing data when opening a URL. |
| michael@0 | 27 | */ |
| michael@0 | 28 | const uint32_t OPEN_TRUNCATE = 1 << 0; |
| michael@0 | 29 | |
| michael@0 | 30 | /** |
| michael@0 | 31 | * Only open an existing entry. Don't create a new one. |
| michael@0 | 32 | */ |
| michael@0 | 33 | const uint32_t OPEN_READONLY = 1 << 1; |
| michael@0 | 34 | |
| michael@0 | 35 | /** |
| michael@0 | 36 | * Use for first-paint blocking loads. |
| michael@0 | 37 | */ |
| michael@0 | 38 | const uint32_t OPEN_PRIORITY = 1 << 2; |
| michael@0 | 39 | |
| michael@0 | 40 | /** |
| michael@0 | 41 | * Bypass the cache load when write is still in progress. |
| michael@0 | 42 | */ |
| michael@0 | 43 | const uint32_t OPEN_BYPASS_IF_BUSY = 1 << 3; |
| michael@0 | 44 | |
| michael@0 | 45 | /** |
| michael@0 | 46 | * Perform the cache entry check (onCacheEntryCheck invocation) on any thread |
| michael@0 | 47 | * for optimal perfomance optimization. If this flag is not specified it is |
| michael@0 | 48 | * ensured that onCacheEntryCheck is called on the same thread as respective |
| michael@0 | 49 | * asyncOpen has been called. |
| michael@0 | 50 | */ |
| michael@0 | 51 | const uint32_t CHECK_MULTITHREADED = 1 << 4; |
| michael@0 | 52 | |
| michael@0 | 53 | /** |
| michael@0 | 54 | * Asynchronously opens a cache entry for the specified URI. |
| michael@0 | 55 | * Result is fetched asynchronously via the callback. |
| michael@0 | 56 | * |
| michael@0 | 57 | * @param aURI |
| michael@0 | 58 | * The URI to search in cache or to open for writting. |
| michael@0 | 59 | * @param aIdExtension |
| michael@0 | 60 | * Any string that will extend (distinguish) the entry. Two entries |
| michael@0 | 61 | * with the same aURI but different aIdExtension will be comletely |
| michael@0 | 62 | * different entries. If you don't know what aIdExtension should be |
| michael@0 | 63 | * leave it empty. |
| michael@0 | 64 | * @param aFlags |
| michael@0 | 65 | * OPEN_NORMALLY - open cache entry normally for read and write |
| michael@0 | 66 | * OPEN_TRUNCATE - delete any existing entry before opening it |
| michael@0 | 67 | * OPEN_READONLY - don't create an entry if there is none |
| michael@0 | 68 | * OPEN_PRIORITY - give this request a priority over others |
| michael@0 | 69 | * OPEN_BYPASS_IF_BUSY - backward compatibility only, LOAD_BYPASS_LOCAL_CACHE_IF_BUSY |
| michael@0 | 70 | * CHECK_MULTITHREADED - onCacheEntryCheck may be called on any thread, consumer |
| michael@0 | 71 | * implementation is thread-safe |
| michael@0 | 72 | * @param aCallback |
| michael@0 | 73 | * The consumer that receives the result. |
| michael@0 | 74 | * IMPORTANT: The callback may be called sooner the method returns. |
| michael@0 | 75 | */ |
| michael@0 | 76 | void asyncOpenURI(in nsIURI aURI, in ACString aIdExtension, |
| michael@0 | 77 | in uint32_t aFlags, |
| michael@0 | 78 | in nsICacheEntryOpenCallback aCallback); |
| michael@0 | 79 | |
| michael@0 | 80 | /** |
| michael@0 | 81 | * Asynchronously removes an entry belonging to the URI from the cache. |
| michael@0 | 82 | */ |
| michael@0 | 83 | void asyncDoomURI(in nsIURI aURI, in ACString aIdExtension, |
| michael@0 | 84 | in nsICacheEntryDoomCallback aCallback); |
| michael@0 | 85 | |
| michael@0 | 86 | /** |
| michael@0 | 87 | * Asynchronously removes all cached entries under this storage. |
| michael@0 | 88 | * NOTE: Disk storage also evicts memory storage. |
| michael@0 | 89 | */ |
| michael@0 | 90 | void asyncEvictStorage(in nsICacheEntryDoomCallback aCallback); |
| michael@0 | 91 | |
| michael@0 | 92 | /** |
| michael@0 | 93 | * Visits the storage and its entries. |
| michael@0 | 94 | * NOTE: Disk storage also visits memory storage. |
| michael@0 | 95 | */ |
| michael@0 | 96 | void asyncVisitStorage(in nsICacheStorageVisitor aVisitor, |
| michael@0 | 97 | in boolean aVisitEntries); |
| michael@0 | 98 | }; |
