Merge pull request #11409 from AdmiralCurtiss/performance-tracker-refactorings

Performance tracker refactorings extracted from PR #11348.

Source/Core/VideoCommon/PerformanceMetrics.cpp

@@ -134,7 +134,7 @@ void PerformanceMetrics::DrawImGuiStats(const float backbuffer_scale) const
         ImPlot::PushStyleColor(ImPlotCol_PlotBg, {0, 0, 0, 0});
         ImPlot::PushStyleColor(ImPlotCol_LegendBg, {0, 0, 0, 0.2f});
         ImPlot::PushStyleVar(ImPlotStyleVar_FitPadding, ImVec2(0.f, 0.f));
-        ImPlot::PushStyleVar(ImPlotStyleVar_LineWeight, 3.f);
+        ImPlot::PushStyleVar(ImPlotStyleVar_LineWeight, 1.5f * backbuffer_scale);
         ImPlot::SetupAxes(nullptr, nullptr,
                           ImPlotAxisFlags_Lock | ImPlotAxisFlags_Invert |
                               ImPlotAxisFlags_NoDecorations | ImPlotAxisFlags_NoHighlight,

Source/Core/VideoCommon/PerformanceMetrics.h

@@ -34,7 +34,7 @@ public:
 private:
   PerformanceTracker m_fps_counter{"render_times.txt"};
   PerformanceTracker m_vps_counter{"vblank_times.txt"};
-  PerformanceTracker m_speed_counter{nullptr, 500000};
+  PerformanceTracker m_speed_counter{std::nullopt, 500000};
 };
 
 extern PerformanceMetrics g_perf_metrics;

Source/Core/VideoCommon/PerformanceTracker.cpp

@@ -5,8 +5,10 @@
 
 #include <algorithm>
 #include <cmath>
-#include <implot.h>
 #include <iomanip>
+#include <mutex>
+
+#include <implot.h>
 
 #include "Common/CommonTypes.h"
 #include "Common/FileUtil.h"
@@ -16,7 +18,7 @@
 
 static constexpr double SAMPLE_RC_RATIO = 0.25;
 
-PerformanceTracker::PerformanceTracker(const char* log_name,
+PerformanceTracker::PerformanceTracker(const std::optional<std::string> log_name,
                                        const std::optional<s64> sample_window_us)
     : m_on_state_changed_handle{Core::AddOnStateChangedCallback([this](Core::State state) {
         if (state == Core::State::Paused)
@@ -36,7 +38,7 @@ PerformanceTracker::~PerformanceTracker()
 
 void PerformanceTracker::Reset()
 {
-  std::lock_guard lock{m_mutex};
+  std::unique_lock lock{m_mutex};
 
   QueueClear();
   m_last_time = Clock::now();
@@ -47,7 +49,7 @@ void PerformanceTracker::Reset()
 
 void PerformanceTracker::Count()
 {
-  std::lock_guard lock{m_mutex};
+  std::unique_lock lock{m_mutex};
 
   if (m_paused)
     return;
@@ -84,8 +86,7 @@ void PerformanceTracker::Count()
 
   m_dt_std = std::nullopt;
 
-  if (m_log_name && g_ActiveConfig.bLogRenderTimeToFile)
-    LogRenderTimeToFile(diff);
+  LogRenderTimeToFile(diff);
 }
 
 DT PerformanceTracker::GetSampleWindow() const
@@ -97,19 +98,19 @@ DT PerformanceTracker::GetSampleWindow() const
 
 double PerformanceTracker::GetHzAvg() const
 {
-  std::lock_guard lock{m_mutex};
+  std::shared_lock lock{m_mutex};
   return m_hz_avg;
 }
 
 DT PerformanceTracker::GetDtAvg() const
 {
-  std::lock_guard lock{m_mutex};
+  std::shared_lock lock{m_mutex};
   return m_dt_avg;
 }
 
 DT PerformanceTracker::GetDtStd() const
 {
-  std::lock_guard lock{m_mutex};
+  std::unique_lock lock{m_mutex};
 
   if (m_dt_std)
     return *m_dt_std;
@@ -130,7 +131,7 @@ DT PerformanceTracker::GetDtStd() const
 
 DT PerformanceTracker::GetLastRawDt() const
 {
-  std::lock_guard lock{m_mutex};
+  std::shared_lock lock{m_mutex};
 
   if (QueueEmpty())
     return DT::zero();
@@ -142,7 +143,7 @@ void PerformanceTracker::ImPlotPlotLines(const char* label) const
 {
   static std::array<float, MAX_DT_QUEUE_SIZE + 2> x, y;
 
-  std::lock_guard lock{m_mutex};
+  std::shared_lock lock{m_mutex};
 
   if (QueueEmpty())
     return;
@@ -228,9 +229,13 @@ bool PerformanceTracker::QueueEmpty() const
 
 void PerformanceTracker::LogRenderTimeToFile(DT val)
 {
+  if (!m_log_name || !g_ActiveConfig.bLogRenderTimeToFile)
+    return;
+
   if (!m_bench_file.is_open())
   {
-    File::OpenFStream(m_bench_file, File::GetUserPath(D_LOGS_IDX) + m_log_name, std::ios_base::out);
+    File::OpenFStream(m_bench_file, File::GetUserPath(D_LOGS_IDX) + *m_log_name,
+                      std::ios_base::out);
   }
 
   m_bench_file << std::fixed << std::setprecision(8) << DT_ms(val).count() << std::endl;
@@ -238,7 +243,7 @@ void PerformanceTracker::LogRenderTimeToFile(DT val)
 
 void PerformanceTracker::SetPaused(bool paused)
 {
-  std::lock_guard lock{m_mutex};
+  std::unique_lock lock{m_mutex};
 
   m_paused = paused;
   if (m_paused)

Source/Core/VideoCommon/PerformanceTracker.h

@@ -6,8 +6,8 @@
 #include <array>
 #include <chrono>
 #include <fstream>
-#include <mutex>
 #include <optional>
+#include <shared_mutex>
 
 #include "Common/CommonTypes.h"
 
@@ -34,8 +34,8 @@ private:
   }
 
 public:
-  PerformanceTracker(const char* log_name = nullptr,
-                     const std::optional<s64> sample_window_us = {});
+  PerformanceTracker(const std::optional<std::string> log_name = std::nullopt,
+                     const std::optional<s64> sample_window_us = std::nullopt);
   ~PerformanceTracker();
 
   PerformanceTracker(const PerformanceTracker&) = delete;
@@ -77,7 +77,7 @@ private:  // Functions for managing dt queue
   int m_on_state_changed_handle;
 
   // Name of log file and file stream
-  const char* m_log_name;
+  std::optional<std::string> m_log_name;
   std::ofstream m_bench_file;
 
   // Last time Count() was called
@@ -100,5 +100,5 @@ private:  // Functions for managing dt queue
   mutable std::optional<DT> m_dt_std = std::nullopt;
 
   // Used to enable thread safety with the performance tracker
-  mutable std::mutex m_mutex;
+  mutable std::shared_mutex m_mutex;
 };