зеркало из https://github.com/mozilla/gecko-dev.git
100 строки
3.6 KiB
C++
100 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_LATENCY_H
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#define MOZILLA_LATENCY_H
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#include "mozilla/TimeStamp.h"
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#include "mozilla/Logging.h"
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#include "nsCOMPtr.h"
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#include "nsIThread.h"
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#include "mozilla/Monitor.h"
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#include "nsISupportsImpl.h"
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#include "nsIObserver.h"
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class AsyncLatencyLogger;
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mozilla::LogModule* GetLatencyLog();
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// This class is a singleton. It is refcounted.
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class AsyncLatencyLogger : public nsIObserver
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{
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIOBSERVER
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public:
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enum LatencyLogIndex {
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AudioMediaStreamTrack = 0,
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VideoMediaStreamTrack,
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Cubeb,
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AudioStream,
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NetEQ,
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AudioCaptureBase, // base time for capturing an audio stream
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AudioCapture, // records number of samples captured and the time
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AudioTrackInsertion, // # of samples inserted into a mediastreamtrack and the time
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MediaPipelineAudioInsertion, // Timestamp and time of timestamp
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AudioTransmit, // Timestamp and socket send time
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AudioReceive, // Timestamp and receive time
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MediaPipelineAudioPlayout, // Timestamp and playout into MST time
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MediaStreamCreate, // Source and TrackUnion streams
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AudioStreamCreate, // TrackUnion stream and AudioStream
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AudioSendRTP,
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AudioRecvRTP,
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_MAX_INDEX
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};
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// Log with a null timestamp
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void Log(LatencyLogIndex index, uint64_t aID, int64_t aValue);
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// Log with a timestamp
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void Log(LatencyLogIndex index, uint64_t aID, int64_t aValue,
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mozilla::TimeStamp &aTime);
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// Write a log message to NSPR
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void WriteLog(LatencyLogIndex index, uint64_t aID, int64_t aValue,
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mozilla::TimeStamp timestamp);
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// Get the base time used by the logger for delta calculations
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void GetStartTime(mozilla::TimeStamp &aStart);
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static AsyncLatencyLogger* Get(bool aStartTimer = false);
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static void InitializeStatics();
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// After this is called, the global log object may go away
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static void ShutdownLogger();
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private:
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AsyncLatencyLogger();
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virtual ~AsyncLatencyLogger();
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int64_t GetTimeStamp();
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void Init();
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// Shut down the thread associated with this, and make sure it doesn't
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// start up again.
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void Shutdown();
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// The thread on which the IO happens
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nsCOMPtr<nsIThread> mThread;
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// This can be initialized on multiple threads, but is protected by a
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// monitor. After the initialization phase, it is accessed on the log
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// thread only.
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mozilla::TimeStamp mStart;
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// This monitor protects mStart and mMediaLatencyLog for the
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// initialization sequence. It is initialized at layout startup, and
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// destroyed at layout shutdown.
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mozilla::Mutex mMutex;
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};
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// need uint32_t versions for access from webrtc/trunk code
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// Log without a time delta
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void LogLatency(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue);
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void LogLatency(uint32_t index, uint64_t aID, int64_t aValue);
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// Log TimeStamp::Now() (as delta)
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void LogTime(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue);
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void LogTime(uint32_t index, uint64_t aID, int64_t aValue);
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// Log the specified time (as delta)
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void LogTime(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue,
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mozilla::TimeStamp &aTime);
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// For generating unique-ish ids for logged sources
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#define LATENCY_STREAM_ID(source, trackID) \
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((((uint64_t) (source)) & ~0x0F) | (trackID))
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#endif
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