mirror of
https://github.com/DrKLO/Telegram.git
synced 2024-12-23 15:00:50 +01:00
292 lines
8.9 KiB
C++
292 lines
8.9 KiB
C++
/*
|
|
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef VIDEO_STATS_COUNTER_H_
|
|
#define VIDEO_STATS_COUNTER_H_
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include "rtc_base/constructor_magic.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class AggregatedCounter;
|
|
class Clock;
|
|
class Samples;
|
|
|
|
// |StatsCounterObserver| is called periodically when a metric is updated.
|
|
class StatsCounterObserver {
|
|
public:
|
|
virtual void OnMetricUpdated(int sample) = 0;
|
|
|
|
virtual ~StatsCounterObserver() {}
|
|
};
|
|
|
|
struct AggregatedStats {
|
|
std::string ToString() const;
|
|
std::string ToStringWithMultiplier(int multiplier) const;
|
|
|
|
int64_t num_samples = 0;
|
|
int min = -1;
|
|
int max = -1;
|
|
int average = -1;
|
|
// TODO(asapersson): Consider adding median/percentiles.
|
|
};
|
|
|
|
// Classes which periodically computes a metric.
|
|
//
|
|
// During a period, |kProcessIntervalMs|, different metrics can be computed e.g:
|
|
// - |AvgCounter|: average of samples
|
|
// - |PercentCounter|: percentage of samples
|
|
// - |PermilleCounter|: permille of samples
|
|
//
|
|
// Each periodic metric can be either:
|
|
// - reported to an |observer| each period
|
|
// - aggregated during the call (e.g. min, max, average)
|
|
//
|
|
// periodically computed
|
|
// GetMetric() GetMetric() => AggregatedStats
|
|
// ^ ^ (e.g. min/max/avg)
|
|
// | |
|
|
// | * * * * | ** * * * * | ...
|
|
// |<- process interval ->|
|
|
//
|
|
// (*) - samples
|
|
//
|
|
//
|
|
// Example usage:
|
|
//
|
|
// AvgCounter counter(&clock, nullptr);
|
|
// counter.Add(5);
|
|
// counter.Add(1);
|
|
// counter.Add(6); // process interval passed -> GetMetric() avg:4
|
|
// counter.Add(7);
|
|
// counter.Add(3); // process interval passed -> GetMetric() avg:5
|
|
// counter.Add(10);
|
|
// counter.Add(20); // process interval passed -> GetMetric() avg:15
|
|
// AggregatedStats stats = counter.GetStats();
|
|
// stats: {min:4, max:15, avg:8}
|
|
//
|
|
|
|
// Note: StatsCounter takes ownership of |observer|.
|
|
|
|
class StatsCounter {
|
|
public:
|
|
virtual ~StatsCounter();
|
|
|
|
// Gets metric within an interval. Returns true on success false otherwise.
|
|
virtual bool GetMetric(int* metric) const = 0;
|
|
|
|
// Gets the value to use for an interval without samples.
|
|
virtual int GetValueForEmptyInterval() const = 0;
|
|
|
|
// Gets aggregated stats (i.e. aggregate of periodically computed metrics).
|
|
AggregatedStats GetStats();
|
|
|
|
// Reports metrics for elapsed intervals to AggregatedCounter and GetStats.
|
|
AggregatedStats ProcessAndGetStats();
|
|
|
|
// Reports metrics for elapsed intervals to AggregatedCounter and pauses stats
|
|
// (i.e. empty intervals will be discarded until next sample is added).
|
|
void ProcessAndPause();
|
|
|
|
// As above with a minimum pause time. Added samples within this interval will
|
|
// not resume the stats (i.e. stop the pause).
|
|
void ProcessAndPauseForDuration(int64_t min_pause_time_ms);
|
|
|
|
// Reports metrics for elapsed intervals to AggregatedCounter and stops pause.
|
|
void ProcessAndStopPause();
|
|
|
|
// Checks if a sample has been added (i.e. Add or Set called).
|
|
bool HasSample() const;
|
|
|
|
protected:
|
|
StatsCounter(Clock* clock,
|
|
int64_t process_intervals_ms,
|
|
bool include_empty_intervals,
|
|
StatsCounterObserver* observer);
|
|
|
|
void Add(int sample);
|
|
void Set(int64_t sample, uint32_t stream_id);
|
|
void SetLast(int64_t sample, uint32_t stream_id);
|
|
|
|
const bool include_empty_intervals_;
|
|
const int64_t process_intervals_ms_;
|
|
const std::unique_ptr<AggregatedCounter> aggregated_counter_;
|
|
const std::unique_ptr<Samples> samples_;
|
|
|
|
private:
|
|
bool TimeToProcess(int* num_elapsed_intervals);
|
|
void TryProcess();
|
|
void ReportMetricToAggregatedCounter(int value, int num_values_to_add) const;
|
|
bool IncludeEmptyIntervals() const;
|
|
void Resume();
|
|
void ResumeIfMinTimePassed();
|
|
|
|
Clock* const clock_;
|
|
const std::unique_ptr<StatsCounterObserver> observer_;
|
|
int64_t last_process_time_ms_;
|
|
bool paused_;
|
|
int64_t pause_time_ms_;
|
|
int64_t min_pause_time_ms_;
|
|
};
|
|
|
|
// AvgCounter: average of samples
|
|
//
|
|
// | * * * | * * | ...
|
|
// | Add(5) Add(1) Add(6) | Add(5) Add(5) |
|
|
// GetMetric | (5 + 1 + 6) / 3 | (5 + 5) / 2 |
|
|
//
|
|
// |include_empty_intervals|: If set, intervals without samples will be included
|
|
// in the stats. The value for an interval is
|
|
// determined by GetValueForEmptyInterval().
|
|
//
|
|
class AvgCounter : public StatsCounter {
|
|
public:
|
|
AvgCounter(Clock* clock,
|
|
StatsCounterObserver* observer,
|
|
bool include_empty_intervals);
|
|
~AvgCounter() override {}
|
|
|
|
void Add(int sample);
|
|
|
|
private:
|
|
bool GetMetric(int* metric) const override;
|
|
|
|
// Returns the last computed metric (i.e. from GetMetric).
|
|
int GetValueForEmptyInterval() const override;
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(AvgCounter);
|
|
};
|
|
|
|
// MaxCounter: maximum of samples
|
|
//
|
|
// | * * * | * * | ...
|
|
// | Add(5) Add(1) Add(6) | Add(5) Add(5) |
|
|
// GetMetric | max: (5, 1, 6) | max: (5, 5) |
|
|
//
|
|
class MaxCounter : public StatsCounter {
|
|
public:
|
|
MaxCounter(Clock* clock,
|
|
StatsCounterObserver* observer,
|
|
int64_t process_intervals_ms);
|
|
~MaxCounter() override {}
|
|
|
|
void Add(int sample);
|
|
|
|
private:
|
|
bool GetMetric(int* metric) const override;
|
|
int GetValueForEmptyInterval() const override;
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(MaxCounter);
|
|
};
|
|
|
|
// PercentCounter: percentage of samples
|
|
//
|
|
// | * * * | * * | ...
|
|
// | Add(T) Add(F) Add(T) | Add(F) Add(T) |
|
|
// GetMetric | 100 * 2 / 3 | 100 * 1 / 2 |
|
|
//
|
|
class PercentCounter : public StatsCounter {
|
|
public:
|
|
PercentCounter(Clock* clock, StatsCounterObserver* observer);
|
|
~PercentCounter() override {}
|
|
|
|
void Add(bool sample);
|
|
|
|
private:
|
|
bool GetMetric(int* metric) const override;
|
|
int GetValueForEmptyInterval() const override;
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(PercentCounter);
|
|
};
|
|
|
|
// PermilleCounter: permille of samples
|
|
//
|
|
// | * * * | * * | ...
|
|
// | Add(T) Add(F) Add(T) | Add(F) Add(T) |
|
|
// GetMetric | 1000 * 2 / 3 | 1000 * 1 / 2 |
|
|
//
|
|
class PermilleCounter : public StatsCounter {
|
|
public:
|
|
PermilleCounter(Clock* clock, StatsCounterObserver* observer);
|
|
~PermilleCounter() override {}
|
|
|
|
void Add(bool sample);
|
|
|
|
private:
|
|
bool GetMetric(int* metric) const override;
|
|
int GetValueForEmptyInterval() const override;
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(PermilleCounter);
|
|
};
|
|
|
|
// RateCounter: units per second
|
|
//
|
|
// | * * * | * * | ...
|
|
// | Add(5) Add(1) Add(6) | Add(5) Add(5) |
|
|
// |<------ 2 sec ------->| |
|
|
// GetMetric | (5 + 1 + 6) / 2 | (5 + 5) / 2 |
|
|
//
|
|
// |include_empty_intervals|: If set, intervals without samples will be included
|
|
// in the stats. The value for an interval is
|
|
// determined by GetValueForEmptyInterval().
|
|
//
|
|
class RateCounter : public StatsCounter {
|
|
public:
|
|
RateCounter(Clock* clock,
|
|
StatsCounterObserver* observer,
|
|
bool include_empty_intervals);
|
|
~RateCounter() override {}
|
|
|
|
void Add(int sample);
|
|
|
|
private:
|
|
bool GetMetric(int* metric) const override;
|
|
int GetValueForEmptyInterval() const override; // Returns zero.
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(RateCounter);
|
|
};
|
|
|
|
// RateAccCounter: units per second (used for counters)
|
|
//
|
|
// | * * * | * * | ...
|
|
// | Set(5) Set(6) Set(8) | Set(11) Set(13) |
|
|
// |<------ 2 sec ------->| |
|
|
// GetMetric | (8 - 0) / 2 | (13 - 8) / 2 |
|
|
//
|
|
// |include_empty_intervals|: If set, intervals without samples will be included
|
|
// in the stats. The value for an interval is
|
|
// determined by GetValueForEmptyInterval().
|
|
//
|
|
class RateAccCounter : public StatsCounter {
|
|
public:
|
|
RateAccCounter(Clock* clock,
|
|
StatsCounterObserver* observer,
|
|
bool include_empty_intervals);
|
|
~RateAccCounter() override {}
|
|
|
|
void Set(int64_t sample, uint32_t stream_id);
|
|
|
|
// Sets the value for previous interval.
|
|
// To be used if a value other than zero is initially required.
|
|
void SetLast(int64_t sample, uint32_t stream_id);
|
|
|
|
private:
|
|
bool GetMetric(int* metric) const override;
|
|
int GetValueForEmptyInterval() const override; // Returns zero.
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(RateAccCounter);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // VIDEO_STATS_COUNTER_H_
|