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104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
// Copyright 2022 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <array>
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#include <chrono>
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#include <fstream>
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#include <optional>
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#include <shared_mutex>
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#include "Common/CommonTypes.h"
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class PerformanceTracker
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{
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private:
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// Must be powers of 2 for masking to work
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static constexpr u64 MAX_DT_QUEUE_SIZE = 1UL << 12;
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static constexpr u64 MAX_QUALITY_GRAPH_SIZE = 1UL << 8;
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static inline std::size_t IncrementIndex(const std::size_t index)
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{
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return (index + 1) & (MAX_DT_QUEUE_SIZE - 1);
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}
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static inline std::size_t DecrementIndex(const std::size_t index)
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{
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return (index - 1) & (MAX_DT_QUEUE_SIZE - 1);
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}
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static inline std::size_t GetDifference(const std::size_t begin, const std::size_t end)
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{
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return (end - begin) & (MAX_DT_QUEUE_SIZE - 1);
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}
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public:
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PerformanceTracker(const std::optional<std::string> log_name = std::nullopt,
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const std::optional<s64> sample_window_us = std::nullopt);
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~PerformanceTracker();
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PerformanceTracker(const PerformanceTracker&) = delete;
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PerformanceTracker& operator=(const PerformanceTracker&) = delete;
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PerformanceTracker(PerformanceTracker&&) = delete;
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PerformanceTracker& operator=(PerformanceTracker&&) = delete;
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// Functions for recording performance information
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void Reset();
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void Count();
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// Functions for reading performance information
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DT GetSampleWindow() const;
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double GetHzAvg() const;
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DT GetDtAvg() const;
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DT GetDtStd() const;
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DT GetLastRawDt() const;
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void ImPlotPlotLines(const char* label) const;
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private: // Functions for managing dt queue
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inline void QueueClear();
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inline void QueuePush(DT dt);
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inline const DT& QueuePop();
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inline const DT& QueueTop() const;
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inline const DT& QueueBottom() const;
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std::size_t inline QueueSize() const;
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bool inline QueueEmpty() const;
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// Handle pausing and logging
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void LogRenderTimeToFile(DT val);
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void SetPaused(bool paused);
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bool m_paused = false;
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int m_on_state_changed_handle;
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// Name of log file and file stream
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std::optional<std::string> m_log_name;
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std::ofstream m_bench_file;
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// Last time Count() was called
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TimePoint m_last_time;
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// Amount of time to sample dt's over (defaults to config)
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const std::optional<s64> m_sample_window_us;
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// Queue + Running Total used to calculate average dt
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DT m_dt_total = DT::zero();
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std::array<DT, MAX_DT_QUEUE_SIZE> m_dt_queue;
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std::size_t m_dt_queue_begin = 0;
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std::size_t m_dt_queue_end = 0;
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// Average rate/time throughout the window
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DT m_dt_avg = DT::zero(); // Uses Moving Average
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double m_hz_avg = 0.0; // Uses Moving Average + Euler Average
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// Used to initialize this on demand instead of on every Count()
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mutable std::optional<DT> m_dt_std = std::nullopt;
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// Used to enable thread safety with the performance tracker
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mutable std::shared_mutex m_mutex;
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};
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