dom/plugins/ipc/PPluginBackgroundDestroyer.ipdl@6474c204b198 (annotated)
dom/plugins/ipc/PPluginBackgroundDestroyer.ipdl
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * vim: sw=4 ts=8 et : |
| michael@0 | 3 | */ |
| michael@0 | 4 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 5 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 6 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 7 | |
| michael@0 | 8 | include protocol PPluginInstance; |
| michael@0 | 9 | |
| michael@0 | 10 | namespace mozilla { |
| michael@0 | 11 | namespace plugins { |
| michael@0 | 12 | |
| michael@0 | 13 | /** |
| michael@0 | 14 | * This protocol exists to allow us to correctly destroy background |
| michael@0 | 15 | * surfaces. The browser owns the surfaces, but shares a "reference" |
| michael@0 | 16 | * with the plugin. The browser needs to notify the plugin when the |
| michael@0 | 17 | * background is going to be destroyed, but it can't rely on the |
| michael@0 | 18 | * plugin to destroy it because the plugin may crash at any time. So |
| michael@0 | 19 | * the plugin instance relinquishes destruction of the its old |
| michael@0 | 20 | * background to actors of this protocol, which can deal with crashy |
| michael@0 | 21 | * corner cases more easily than the instance. |
| michael@0 | 22 | */ |
| michael@0 | 23 | protocol PPluginBackgroundDestroyer { |
| michael@0 | 24 | manager PPluginInstance; |
| michael@0 | 25 | |
| michael@0 | 26 | // The ctor message for this protocol serves double-duty as |
| michael@0 | 27 | // notification that that the background is stale. |
| michael@0 | 28 | |
| michael@0 | 29 | parent: |
| michael@0 | 30 | __delete__(); |
| michael@0 | 31 | |
| michael@0 | 32 | state DESTROYING: |
| michael@0 | 33 | recv __delete__; |
| michael@0 | 34 | }; |
| michael@0 | 35 | |
| michael@0 | 36 | } // namespace plugins |
| michael@0 | 37 | } // namespace mozilla |
