The Tor Browser / file comparison
comparison: dom/plugins/ipc/PPluginBackgroundDestroyer.ipdl
dom/plugins/ipc/PPluginBackgroundDestroyer.ipdl
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:1c69f6dee073 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: sw=4 ts=8 et : | |
| 3 */ | |
| 4 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 include protocol PPluginInstance; | |
| 9 | |
| 10 namespace mozilla { | |
| 11 namespace plugins { | |
| 12 | |
| 13 /** | |
| 14 * This protocol exists to allow us to correctly destroy background | |
| 15 * surfaces. The browser owns the surfaces, but shares a "reference" | |
| 16 * with the plugin. The browser needs to notify the plugin when the | |
| 17 * background is going to be destroyed, but it can't rely on the | |
| 18 * plugin to destroy it because the plugin may crash at any time. So | |
| 19 * the plugin instance relinquishes destruction of the its old | |
| 20 * background to actors of this protocol, which can deal with crashy | |
| 21 * corner cases more easily than the instance. | |
| 22 */ | |
| 23 protocol PPluginBackgroundDestroyer { | |
| 24 manager PPluginInstance; | |
| 25 | |
| 26 // The ctor message for this protocol serves double-duty as | |
| 27 // notification that that the background is stale. | |
| 28 | |
| 29 parent: | |
| 30 __delete__(); | |
| 31 | |
| 32 state DESTROYING: | |
| 33 recv __delete__; | |
| 34 }; | |
| 35 | |
| 36 } // namespace plugins | |
| 37 } // namespace mozilla |
