Make DolphinAnalytics a true singleton - static local variables are initialized in a thread safe manner since C++11

Also works around a Visual Studio 2017 bug where static inline class fields are destructed multiple times

Source/Android/jni/MainAndroid.cpp

@@ -639,7 +639,7 @@ static void Run(JNIEnv* env, const std::vector<std::string>& paths, bool first_o
 
   if (first_open)
   {
-    DolphinAnalytics::Instance()->ReportDolphinStart(GetAnalyticValue("DEVICE_TYPE"));
+    DolphinAnalytics::Instance().ReportDolphinStart(GetAnalyticValue("DEVICE_TYPE"));
   }
 
   WiimoteReal::InitAdapterClass();

Source/Core/Core/Analytics.cpp

@@ -53,14 +53,10 @@ DolphinAnalytics::DolphinAnalytics()
   MakeBaseBuilder();
 }
 
-std::shared_ptr<DolphinAnalytics> DolphinAnalytics::Instance()
+DolphinAnalytics& DolphinAnalytics::Instance()
 {
-  std::lock_guard lk{s_instance_mutex};
-  if (!s_instance)
-  {
-    s_instance.reset(new DolphinAnalytics());
-  }
-  return s_instance;
+  static DolphinAnalytics instance;
+  return instance;
 }
 
 void DolphinAnalytics::ReloadConfig()

Source/Core/Core/Analytics.h

@@ -36,7 +36,7 @@ class DolphinAnalytics
 {
 public:
   // Performs lazy-initialization of a singleton and returns the instance.
-  static std::shared_ptr<DolphinAnalytics> Instance();
+  static DolphinAnalytics& Instance();
 
 #if defined(ANDROID)
   // Get value from java.
@@ -124,9 +124,4 @@ private:
 
   std::mutex m_reporter_mutex;
   Common::AnalyticsReporter m_reporter;
-
-  // Shared pointer in order to allow for multithreaded use of the instance and
-  // avoid races at reinitialization time.
-  static inline std::mutex s_instance_mutex;
-  static inline std::shared_ptr<DolphinAnalytics> s_instance;
 };

Source/Core/Core/ConfigManager.cpp

@@ -745,7 +745,7 @@ void SConfig::SetRunningGameMetadata(const std::string& game_id, const std::stri
     HLE::Reload();
     PatchEngine::Reload();
     HiresTexture::Update();
-    DolphinAnalytics::Instance()->ReportGameStart();
+    DolphinAnalytics::Instance().ReportGameStart();
   }
 }
 

Source/Core/Core/Core.cpp

@@ -322,7 +322,7 @@ static void CpuThread(const std::optional<std::string>& savestate_path, bool del
     Common::SetCurrentThreadName("CPU-GPU thread");
 
   // This needs to be delayed until after the video backend is ready.
-  DolphinAnalytics::Instance()->ReportGameStart();
+  DolphinAnalytics::Instance().ReportGameStart();
 
   if (_CoreParameter.bFastmem)
     EMM::InstallExceptionHandler();  // Let's run under memory watch

Source/Core/Core/HW/WiimoteEmu/EmuSubroutines.cpp

@@ -520,7 +520,7 @@ bool Wiimote::ProcessReadDataRequest()
         m_read_request.address + m_read_request.size > CameraLogic::REPORT_DATA_OFFSET;
 
     if (is_reading_ext || is_reading_ir)
-      DolphinAnalytics::Instance()->ReportGameQuirk(GameQuirk::DIRECTLY_READS_WIIMOTE_INPUT);
+      DolphinAnalytics::Instance().ReportGameQuirk(GameQuirk::DIRECTLY_READS_WIIMOTE_INPUT);
 
     // Top byte of address is ignored on the bus, but it IS maintained in the read-reply.
     auto const bytes_read = m_i2c_bus.BusRead(

Source/Core/Core/PowerPC/PPCCache.cpp

@@ -154,7 +154,7 @@ u32 InstructionCache::ReadInstruction(u32 addr)
   {
     INFO_LOG(POWERPC, "ICache read at %08x returned stale data: CACHED: %08x vs. RAM: %08x", addr,
              res, inmem);
-    DolphinAnalytics::Instance()->ReportGameQuirk(GameQuirk::ICACHE_MATTERS);
+    DolphinAnalytics::Instance().ReportGameQuirk(GameQuirk::ICACHE_MATTERS);
   }
   return res;
 }

Source/Core/DolphinNoGUI/MainNoGUI.cpp

@@ -202,7 +202,7 @@ int main(int argc, char* argv[])
   sigaction(SIGINT, &sa, nullptr);
   sigaction(SIGTERM, &sa, nullptr);
 
-  DolphinAnalytics::Instance()->ReportDolphinStart("nogui");
+  DolphinAnalytics::Instance().ReportDolphinStart("nogui");
 
   if (!BootManager::BootCore(std::move(boot), s_platform->GetWindowSystemInfo()))
   {

Source/Core/DolphinQt/Main.cpp

@@ -177,7 +177,7 @@ int main(int argc, char* argv[])
   int retval;
 
   {
-    DolphinAnalytics::Instance()->ReportDolphinStart("qt");
+    DolphinAnalytics::Instance().ReportDolphinStart("qt");
 
     MainWindow win{std::move(boot), static_cast<const char*>(options.get("movie"))};
     if (options.is_set("debugger"))
@@ -210,7 +210,7 @@ int main(int argc, char* argv[])
       SConfig::GetInstance().m_analytics_permission_asked = true;
       Settings::Instance().SetAnalyticsEnabled(answer == QMessageBox::Yes);
 
-      DolphinAnalytics::Instance()->ReloadConfig();
+      DolphinAnalytics::Instance().ReloadConfig();
     }
 #endif
 

Source/Core/DolphinQt/Settings/GeneralPane.cpp

@@ -300,7 +300,7 @@ void GeneralPane::OnSaveConfig()
 
 #if defined(USE_ANALYTICS) && USE_ANALYTICS
   Settings::Instance().SetAnalyticsEnabled(m_checkbox_enable_analytics->isChecked());
-  DolphinAnalytics::Instance()->ReloadConfig();
+  DolphinAnalytics::Instance().ReloadConfig();
 #endif
   settings.bCPUThread = m_checkbox_dualcore->isChecked();
   Config::SetBaseOrCurrent(Config::MAIN_CPU_THREAD, m_checkbox_dualcore->isChecked());
@@ -325,8 +325,8 @@ void GeneralPane::OnSaveConfig()
 #if defined(USE_ANALYTICS) && USE_ANALYTICS
 void GeneralPane::GenerateNewIdentity()
 {
-  DolphinAnalytics::Instance()->GenerateNewIdentity();
-  DolphinAnalytics::Instance()->ReloadConfig();
+  DolphinAnalytics::Instance().GenerateNewIdentity();
+  DolphinAnalytics::Instance().ReloadConfig();
   ModalMessageBox message_box(this);
   message_box.setIcon(QMessageBox::Information);
   message_box.setWindowTitle(tr("Identity Generation"));

Source/Core/VideoCommon/RenderBase.cpp

@@ -1282,7 +1282,7 @@ void Renderer::Swap(u32 xfb_addr, u32 fb_width, u32 fb_stride, u32 fb_height, u6
       perf_sample.speed_ratio = SystemTimers::GetEstimatedEmulationPerformance();
       perf_sample.num_prims = stats.thisFrame.numPrims + stats.thisFrame.numDLPrims;
       perf_sample.num_draw_calls = stats.thisFrame.numDrawCalls;
-      DolphinAnalytics::Instance()->ReportPerformanceInfo(std::move(perf_sample));
+      DolphinAnalytics::Instance().ReportPerformanceInfo(std::move(perf_sample));
 
       if (IsFrameDumping())
         DumpCurrentFrame(xfb_entry->texture.get(), xfb_rect, ticks);