Address review comments

src/citra/default_ini.h

@@ -261,7 +261,7 @@ camera_inner_flip =
 log_filter = *:Info
 
 [Debugging]
-# Record frame time data, can be found in the log directory
+# Record frame time data, can be found in the log directory. Boolean value
 record_frame_times =
 # Port for listening to GDB connections.
 use_gdbstub=false

src/citra_qt/configuration/config.cpp

@@ -255,7 +255,8 @@ void Config::ReadValues() {
     qt_config->endGroup();
 
     qt_config->beginGroup("Debugging");
-    Settings::values.record_frame_times = ReadSetting("record_frame_times", false).toBool();
+    // Intentionally not using the QT default setting as this is intended to be changed in the ini
+    Settings::values.record_frame_times = qt_config->value("record_frame_times", false).toBool();
     Settings::values.use_gdbstub = ReadSetting("use_gdbstub", false).toBool();
     Settings::values.gdbstub_port = ReadSetting("gdbstub_port", 24689).toInt();
 
@@ -545,7 +546,8 @@ void Config::SaveValues() {
     qt_config->endGroup();
 
     qt_config->beginGroup("Debugging");
-    WriteSetting("record_frame_times", Settings::values.record_frame_times, false);
+    // Intentionally not using the QT default setting as this is intended to be changed in the ini
+    qt_config->setValue("record_frame_times", Settings::values.record_frame_times);
     WriteSetting("use_gdbstub", Settings::values.use_gdbstub, false);
     WriteSetting("gdbstub_port", Settings::values.gdbstub_port, 24689);
 

src/core/core.cpp

@@ -183,8 +183,8 @@ System::ResultStatus System::Init(Frontend::EmuWindow& emu_window, u32 system_mo
 
     timing = std::make_unique<Timing>();
 
-    kernel = std::make_unique<Kernel::KernelSystem>(
-        *memory, *timing, [this] { PrepareReschedule(); }, system_mode);
+    kernel = std::make_unique<Kernel::KernelSystem>(*memory, *timing,
+                                                    [this] { PrepareReschedule(); }, system_mode);
 
     if (Settings::values.use_cpu_jit) {
 #ifdef ARCHITECTURE_x86_64
@@ -321,6 +321,7 @@ void System::Shutdown() {
     VideoCore::Shutdown();
     HW::Shutdown();
     telemetry_session.reset();
+    perf_stats.reset();
     rpc_server.reset();
     cheat_engine.reset();
     service_manager.reset();

src/core/perf_stats.cpp

@@ -21,22 +21,23 @@ using std::chrono::microseconds;
 
 // Purposefully ignore the first five frames, as there's a significant amount of overhead in
 // booting that we shouldn't account for
-constexpr size_t IGNORE_FRAMES = 5;
+constexpr std::size_t IgnoreFrames = 5;
 
 namespace Core {
 
 PerfStats::PerfStats(u64 title_id) : title_id(title_id) {}
 
 PerfStats::~PerfStats() {
-    if (Settings::values.record_frame_times && title_id != 0) {
-        std::ostringstream stream;
-        std::copy(perf_history.begin() + IGNORE_FRAMES, perf_history.begin() + current_index,
-                  std::ostream_iterator<double>(stream, "\n"));
-        std::string path = FileUtil::GetUserPath(FileUtil::UserPath::LogDir);
-        std::string filename = fmt::format("{}/{:X}.csv", path, title_id);
-        FileUtil::IOFile file(filename, "w");
-        file.WriteString(stream.str());
+    if (!Settings::values.record_frame_times || title_id == 0) {
+        return;
     }
+    std::ostringstream stream;
+    std::copy(perf_history.begin() + IgnoreFrames, perf_history.begin() + current_index,
+              std::ostream_iterator<double>(stream, "\n"));
+    std::string path = FileUtil::GetUserPath(FileUtil::UserPath::LogDir);
+    std::string filename = fmt::format("{}/{:X}.csv", path, title_id);
+    FileUtil::IOFile file(filename, "w");
+    file.WriteString(stream.str());
 }
 
 void PerfStats::BeginSystemFrame() {
@@ -68,12 +69,12 @@ void PerfStats::EndGameFrame() {
 }
 
 double PerfStats::GetMeanFrametime() {
-    if (current_index < 2) {
+    if (current_index <= IgnoreFrames) {
         return 0;
     }
-    double sum = std::accumulate(perf_history.begin() + IGNORE_FRAMES,
+    double sum = std::accumulate(perf_history.begin() + IgnoreFrames,
                                  perf_history.begin() + current_index, 0);
-    return sum / (current_index - 1 - IGNORE_FRAMES);
+    return sum / (current_index - IgnoreFrames);
 }
 
 PerfStats::Results PerfStats::GetAndResetStats(microseconds current_system_time_us) {

src/core/perf_stats.h

@@ -59,7 +59,7 @@ private:
     /// Title ID for the game that is running. 0 if there is no game running yet
     u64 title_id{0};
     /// Current index for writing to the perf_history array
-    size_t current_index{0};
+    std::size_t current_index{0};
     /// Stores an hour of historical frametime data useful for processing and tracking performance
     /// regressions with code changes.
     std::array<double, 216000> perf_history = {};