content/media/webaudio/PlayingRefChangeHandler.h@97036ab72558 (annotated)
content/media/webaudio/PlayingRefChangeHandler.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| 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 | #ifndef PlayingRefChangeHandler_h__ |
| michael@0 | 8 | #define PlayingRefChangeHandler_h__ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "nsThreadUtils.h" |
| michael@0 | 11 | #include "AudioNodeStream.h" |
| michael@0 | 12 | |
| michael@0 | 13 | namespace mozilla { |
| michael@0 | 14 | namespace dom { |
| michael@0 | 15 | |
| michael@0 | 16 | class PlayingRefChangeHandler : public nsRunnable |
| michael@0 | 17 | { |
| michael@0 | 18 | public: |
| michael@0 | 19 | enum ChangeType { ADDREF, RELEASE }; |
| michael@0 | 20 | PlayingRefChangeHandler(AudioNodeStream* aStream, ChangeType aChange) |
| michael@0 | 21 | : mStream(aStream) |
| michael@0 | 22 | , mChange(aChange) |
| michael@0 | 23 | { |
| michael@0 | 24 | } |
| michael@0 | 25 | |
| michael@0 | 26 | NS_IMETHOD Run() |
| michael@0 | 27 | { |
| michael@0 | 28 | nsRefPtr<AudioNode> node; |
| michael@0 | 29 | { |
| michael@0 | 30 | // No need to keep holding the lock for the whole duration of this |
| michael@0 | 31 | // function, since we're holding a strong reference to it, so if |
| michael@0 | 32 | // we can obtain the reference, we will hold the node alive in |
| michael@0 | 33 | // this function. |
| michael@0 | 34 | MutexAutoLock lock(mStream->Engine()->NodeMutex()); |
| michael@0 | 35 | node = mStream->Engine()->Node(); |
| michael@0 | 36 | } |
| michael@0 | 37 | if (node) { |
| michael@0 | 38 | if (mChange == ADDREF) { |
| michael@0 | 39 | node->MarkActive(); |
| michael@0 | 40 | } else if (mChange == RELEASE) { |
| michael@0 | 41 | node->MarkInactive(); |
| michael@0 | 42 | } |
| michael@0 | 43 | } |
| michael@0 | 44 | return NS_OK; |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | private: |
| michael@0 | 48 | nsRefPtr<AudioNodeStream> mStream; |
| michael@0 | 49 | ChangeType mChange; |
| michael@0 | 50 | }; |
| michael@0 | 51 | |
| michael@0 | 52 | } |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | #endif |
| michael@0 | 56 |
