content/media/Latency.h@97036ab72558 (annotated)
content/media/Latency.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 MOZILLA_LATENCY_H |
| michael@0 | 8 | #define MOZILLA_LATENCY_H |
| michael@0 | 9 | |
| michael@0 | 10 | #include "mozilla/TimeStamp.h" |
| michael@0 | 11 | #include "prlog.h" |
| michael@0 | 12 | #include "nsCOMPtr.h" |
| michael@0 | 13 | #include "nsIThread.h" |
| michael@0 | 14 | #include "mozilla/Monitor.h" |
| michael@0 | 15 | #include "nsISupportsImpl.h" |
| michael@0 | 16 | #include "nsIObserver.h" |
| michael@0 | 17 | |
| michael@0 | 18 | class AsyncLatencyLogger; |
| michael@0 | 19 | class LogEvent; |
| michael@0 | 20 | |
| michael@0 | 21 | PRLogModuleInfo* GetLatencyLog(); |
| michael@0 | 22 | |
| michael@0 | 23 | // This class is a singleton. It is refcounted. |
| michael@0 | 24 | class AsyncLatencyLogger : public nsIObserver |
| michael@0 | 25 | { |
| michael@0 | 26 | NS_DECL_THREADSAFE_ISUPPORTS |
| michael@0 | 27 | NS_DECL_NSIOBSERVER |
| michael@0 | 28 | |
| michael@0 | 29 | public: |
| michael@0 | 30 | |
| michael@0 | 31 | enum LatencyLogIndex { |
| michael@0 | 32 | AudioMediaStreamTrack = 0, |
| michael@0 | 33 | VideoMediaStreamTrack, |
| michael@0 | 34 | Cubeb, |
| michael@0 | 35 | AudioStream, |
| michael@0 | 36 | NetEQ, |
| michael@0 | 37 | AudioCaptureBase, // base time for capturing an audio stream |
| michael@0 | 38 | AudioCapture, // records number of samples captured and the time |
| michael@0 | 39 | AudioTrackInsertion, // # of samples inserted into a mediastreamtrack and the time |
| michael@0 | 40 | MediaPipelineAudioInsertion, // Timestamp and time of timestamp |
| michael@0 | 41 | AudioTransmit, // Timestamp and socket send time |
| michael@0 | 42 | AudioReceive, // Timestamp and receive time |
| michael@0 | 43 | MediaPipelineAudioPlayout, // Timestamp and playout into MST time |
| michael@0 | 44 | MediaStreamCreate, // Source and TrackUnion streams |
| michael@0 | 45 | AudioStreamCreate, // TrackUnion stream and AudioStream |
| michael@0 | 46 | AudioSendRTP, |
| michael@0 | 47 | AudioRecvRTP, |
| michael@0 | 48 | _MAX_INDEX |
| michael@0 | 49 | }; |
| michael@0 | 50 | // Log with a null timestamp |
| michael@0 | 51 | void Log(LatencyLogIndex index, uint64_t aID, int64_t aValue); |
| michael@0 | 52 | // Log with a timestamp |
| michael@0 | 53 | void Log(LatencyLogIndex index, uint64_t aID, int64_t aValue, |
| michael@0 | 54 | mozilla::TimeStamp &aTime); |
| michael@0 | 55 | // Write a log message to NSPR |
| michael@0 | 56 | void WriteLog(LatencyLogIndex index, uint64_t aID, int64_t aValue, |
| michael@0 | 57 | mozilla::TimeStamp timestamp); |
| michael@0 | 58 | // Get the base time used by the logger for delta calculations |
| michael@0 | 59 | void GetStartTime(mozilla::TimeStamp &aStart); |
| michael@0 | 60 | |
| michael@0 | 61 | static AsyncLatencyLogger* Get(bool aStartTimer = false); |
| michael@0 | 62 | static void InitializeStatics(); |
| michael@0 | 63 | // After this is called, the global log object may go away |
| michael@0 | 64 | static void ShutdownLogger(); |
| michael@0 | 65 | private: |
| michael@0 | 66 | AsyncLatencyLogger(); |
| michael@0 | 67 | virtual ~AsyncLatencyLogger(); |
| michael@0 | 68 | int64_t GetTimeStamp(); |
| michael@0 | 69 | void Init(); |
| michael@0 | 70 | // Shut down the thread associated with this, and make sure it doesn't |
| michael@0 | 71 | // start up again. |
| michael@0 | 72 | void Shutdown(); |
| michael@0 | 73 | // The thread on which the IO happens |
| michael@0 | 74 | nsCOMPtr<nsIThread> mThread; |
| michael@0 | 75 | // This can be initialized on multiple threads, but is protected by a |
| michael@0 | 76 | // monitor. After the initialization phase, it is accessed on the log |
| michael@0 | 77 | // thread only. |
| michael@0 | 78 | mozilla::TimeStamp mStart; |
| michael@0 | 79 | // This monitor protects mStart and mMediaLatencyLog for the |
| michael@0 | 80 | // initialization sequence. It is initialized at layout startup, and |
| michael@0 | 81 | // destroyed at layout shutdown. |
| michael@0 | 82 | mozilla::Mutex mMutex; |
| michael@0 | 83 | }; |
| michael@0 | 84 | |
| michael@0 | 85 | // need uint32_t versions for access from webrtc/trunk code |
| michael@0 | 86 | // Log without a time delta |
| michael@0 | 87 | void LogLatency(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue); |
| michael@0 | 88 | void LogLatency(uint32_t index, uint64_t aID, int64_t aValue); |
| michael@0 | 89 | // Log TimeStamp::Now() (as delta) |
| michael@0 | 90 | void LogTime(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue); |
| michael@0 | 91 | void LogTime(uint32_t index, uint64_t aID, int64_t aValue); |
| michael@0 | 92 | // Log the specified time (as delta) |
| michael@0 | 93 | void LogTime(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue, |
| michael@0 | 94 | mozilla::TimeStamp &aTime); |
| michael@0 | 95 | |
| michael@0 | 96 | // For generating unique-ish ids for logged sources |
| michael@0 | 97 | #define LATENCY_STREAM_ID(source, trackID) \ |
| michael@0 | 98 | ((((uint64_t) (source)) & ~0x0F) | (trackID)) |
| michael@0 | 99 | |
| michael@0 | 100 | #endif |
