Merge branch 'master' into 20-empty-nca-lockup

- fixed a typo i found
- awaiting dialog on invalid unpacked error
-

src/ARMeilleure/Common/EntryTable.cs

@@ -168,7 +168,7 @@ namespace ARMeilleure.Common
             {
                 _allocated.Dispose();
 
-                foreach (IntPtr page in _pages.Values)
+                foreach (nint page in _pages.Values)
                 {
                     NativeAllocator.Instance.Free((void*)page);
                 }

src/Ryujinx.Audio.Backends.Apple/AppleHardwareDeviceDriver.cs

@@ -44,12 +44,12 @@ namespace Ryujinx.Audio.Backends.Apple
 
                 int result = AudioQueueNewOutput(
                     ref format,
-                    IntPtr.Zero,
+                    nint.Zero,
-                    IntPtr.Zero,
+                    nint.Zero,
-                    IntPtr.Zero,
+                    nint.Zero,
-                    IntPtr.Zero,
+                    nint.Zero,
                     0,
-                    out IntPtr testQueue);
+                    out nint testQueue);
 
                 if (result == 0)
                 {
@@ -95,12 +95,12 @@ namespace Ryujinx.Audio.Backends.Apple
                     GetAudioFormat(SampleFormat.PcmInt16, Constants.TargetSampleRate, 2);
                 int result = AudioQueueNewOutput(
                     ref format,
-                    IntPtr.Zero,
+                    nint.Zero,
-                    IntPtr.Zero,
+                    nint.Zero,
-                    IntPtr.Zero,
+                    nint.Zero,
-                    IntPtr.Zero,
+                    nint.Zero,
                     0,
-                    out IntPtr testQueue);
+                    out nint testQueue);
 
                 if (result == 0)
                 {
@@ -110,8 +110,9 @@ namespace Ryujinx.Audio.Backends.Apple
 
                 return false;
             }
-            catch
+            catch (Exception e)
             {
+                Logger.Error?.Print(LogClass.Audio, $"Failed to check if AudioToolbox is supported: {e.Message}\n{e.StackTrace}");
                 return false;
             }
         }

src/Ryujinx.Audio.Backends.Apple/AppleHardwareDeviceSession.cs

@@ -1,15 +1,12 @@
 using Ryujinx.Audio.Backends.Common;
 using Ryujinx.Audio.Common;
-using Ryujinx.Common.Logging;
 using Ryujinx.Memory;
 using System;
 using System.Collections.Concurrent;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Runtime.Versioning;
-using Ryujinx.Audio.Backends.Apple.Native;
 using static Ryujinx.Audio.Backends.Apple.Native.AudioToolbox;
-using static Ryujinx.Audio.Backends.Apple.AppleHardwareDeviceDriver;
 
 namespace Ryujinx.Audio.Backends.Apple
 {
@@ -27,8 +24,8 @@ namespace Ryujinx.Audio.Backends.Apple
         private readonly AudioQueueOutputCallback _callbackDelegate;
         private readonly GCHandle _gcHandle;
 
-        private IntPtr _audioQueue;
+        private nint _audioQueue;
-        private readonly IntPtr[] _audioQueueBuffers = new IntPtr[NumBuffers];
+        private readonly nint[] _audioQueueBuffers = new nint[NumBuffers];
         private readonly int[] _bufferBytesFilled = new int[NumBuffers];
 
         private readonly int _bytesPerFrame;
@@ -41,9 +38,9 @@ namespace Ryujinx.Audio.Backends.Apple
 
         [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
         private delegate void AudioQueueOutputCallback(
-            IntPtr userData,
+            nint userData,
-            IntPtr audioQueue,
+            nint audioQueue,
-            IntPtr buffer);
+            nint buffer);
 
         public AppleHardwareDeviceSession(
             AppleHardwareDeviceDriver driver,
@@ -72,15 +69,15 @@ namespace Ryujinx.Audio.Backends.Apple
                     RequestedSampleRate,
                     RequestedChannelCount);
 
-                IntPtr callbackPtr = Marshal.GetFunctionPointerForDelegate(_callbackDelegate);
+                nint callbackPtr = Marshal.GetFunctionPointerForDelegate(_callbackDelegate);
-                IntPtr userData = GCHandle.ToIntPtr(_gcHandle);
+                nint userData = GCHandle.ToIntPtr(_gcHandle);
 
                 int result = AudioQueueNewOutput(
                     ref format,
                     callbackPtr,
                     userData,
-                    IntPtr.Zero,
+                    nint.Zero,
-                    IntPtr.Zero,
+                    nint.Zero,
                     0,
                     out _audioQueue);
 
@@ -102,7 +99,7 @@ namespace Ryujinx.Audio.Backends.Apple
             }
         }
 
-        private unsafe void PrimeBuffer(IntPtr bufferPtr, int bufferIndex)
+        private unsafe void PrimeBuffer(nint bufferPtr, int bufferIndex)
         {
             AudioQueueBuffer* buffer = (AudioQueueBuffer*)bufferPtr;
 
@@ -126,12 +123,12 @@ namespace Ryujinx.Audio.Backends.Apple
             buffer->AudioDataByteSize = (uint)capacityBytes;
             _bufferBytesFilled[bufferIndex] = bytesToRead;
 
-            AudioQueueEnqueueBuffer(_audioQueue, bufferPtr, 0, IntPtr.Zero);
+            AudioQueueEnqueueBuffer(_audioQueue, bufferPtr, 0, nint.Zero);
         }
 
-        private void OutputCallback(IntPtr userData, IntPtr audioQueue, IntPtr bufferPtr)
+        private void OutputCallback(nint userData, nint audioQueue, nint bufferPtr)
         {
-            if (!_started || bufferPtr == IntPtr.Zero)
+            if (!_started || bufferPtr == nint.Zero)
                 return;
 
             int bufferIndex = Array.IndexOf(_audioQueueBuffers, bufferPtr);
@@ -176,7 +173,7 @@ namespace Ryujinx.Audio.Backends.Apple
             }
         }
 
-        private unsafe void ApplyVolume(IntPtr dataPtr, int byteSize)
+        private unsafe void ApplyVolume(nint dataPtr, int byteSize)
         {
             float volume = Math.Clamp(_volume * _driver.Volume, 0f, 1f);
             if (volume >= 0.999f)
@@ -226,7 +223,7 @@ namespace Ryujinx.Audio.Backends.Apple
                     return;
 
                 _started = true;
-                AudioQueueStart(_audioQueue, IntPtr.Zero);
+                AudioQueueStart(_audioQueue, nint.Zero);
             }
         }
 
@@ -265,11 +262,11 @@ namespace Ryujinx.Audio.Backends.Apple
             {
                 Stop();
 
-                if (_audioQueue != IntPtr.Zero)
+                if (_audioQueue != nint.Zero)
                 {
                     AudioQueueStop(_audioQueue, true);
                     AudioQueueDispose(_audioQueue, true);
-                    _audioQueue = IntPtr.Zero;
+                    _audioQueue = nint.Zero;
                 }
 
                 if (_gcHandle.IsAllocated)

src/Ryujinx.Audio.Backends.SoundIo/Native/SoundIoOutStreamContext.cs

@@ -130,7 +130,7 @@ namespace Ryujinx.Audio.Backends.SoundIo.Native
             unsafe
             {
                 int* frameCountPtr = &nativeFrameCount;
-                IntPtr* arenasPtr = &arenas;
+                nint* arenasPtr = &arenas;
                 CheckError(soundio_outstream_begin_write(_context, (nint)arenasPtr, (nint)frameCountPtr));
 
                 frameCount = *frameCountPtr;

src/Ryujinx.Cpu/AddressTable.cs

@@ -30,9 +30,9 @@ namespace ARMeilleure.Common
             /// <summary>
             /// Base address for the page.
             /// </summary>
-            public readonly IntPtr Address;
+            public readonly nint Address;
 
-            public AddressTablePage(bool isSparse, IntPtr address)
+            public AddressTablePage(bool isSparse, nint address)
             {
                 IsSparse = isSparse;
                 Address = address;
@@ -47,20 +47,20 @@ namespace ARMeilleure.Common
             public readonly SparseMemoryBlock Block;
             private readonly TrackingEventDelegate _trackingEvent;
 
-            public TableSparseBlock(ulong size, Action<IntPtr> ensureMapped, PageInitDelegate pageInit)
+            public TableSparseBlock(ulong size, Action<nint> ensureMapped, PageInitDelegate pageInit)
             {
                 SparseMemoryBlock block = new(size, pageInit, null);
 
                 _trackingEvent = (address, size, write) =>
                 {
                     ulong pointer = (ulong)block.Block.Pointer + address;
-                    ensureMapped((IntPtr)pointer);
+                    ensureMapped((nint)pointer);
                     return pointer;
                 };
 
                 bool added = NativeSignalHandler.AddTrackedRegion(
                     (nuint)block.Block.Pointer,
-                    (nuint)(block.Block.Pointer + (IntPtr)block.Block.Size),
+                    (nuint)(block.Block.Pointer + (nint)block.Block.Size),
                     Marshal.GetFunctionPointerForDelegate(_trackingEvent));
 
                 if (!added)
@@ -116,7 +116,7 @@ namespace ARMeilleure.Common
         }
 
         /// <inheritdoc/>
-        public IntPtr Base
+        public nint Base
         {
             get
             {
@@ -124,7 +124,7 @@ namespace ARMeilleure.Common
 
                 lock (_pages)
                 {
-                    return (IntPtr)GetRootPage();
+                    return (nint)GetRootPage();
                 }
             }
         }
@@ -240,7 +240,7 @@ namespace ARMeilleure.Common
 
                 long index = Levels[^1].GetValue(address);
 
-                EnsureMapped((IntPtr)(page + index));
+                EnsureMapped((nint)(page + index));
 
                 return ref page[index];
             }
@@ -284,7 +284,7 @@ namespace ARMeilleure.Common
         /// Ensure the given pointer is mapped in any overlapping sparse reservations.
         /// </summary>
         /// <param name="ptr">Pointer to be mapped</param>
-        private void EnsureMapped(IntPtr ptr)
+        private void EnsureMapped(nint ptr)
         {
             if (Sparse)
             {
@@ -299,7 +299,7 @@ namespace ARMeilleure.Common
                     {
                         SparseMemoryBlock sparse = reserved.Block;
 
-                        if (ptr >= sparse.Block.Pointer && ptr < sparse.Block.Pointer + (IntPtr)sparse.Block.Size)
+                        if (ptr >= sparse.Block.Pointer && ptr < sparse.Block.Pointer + (nint)sparse.Block.Size)
                         {
                             sparse.EnsureMapped((ulong)(ptr - sparse.Block.Pointer));
 
@@ -319,15 +319,15 @@ namespace ARMeilleure.Common
         /// </summary>
         /// <param name="level">Level to get the fill value for</param>
         /// <returns>The fill value</returns>
-        private IntPtr GetFillValue(int level)
+        private nint GetFillValue(int level)
         {
             if (_fillBottomLevel != null && level == Levels.Length - 2)
             {
-                return (IntPtr)_fillBottomLevelPtr;
+                return (nint)_fillBottomLevelPtr;
             }
             else
             {
-                return IntPtr.Zero;
+                return nint.Zero;
             }
         }
 
@@ -379,7 +379,7 @@ namespace ARMeilleure.Common
         /// <param name="fill">Fill value</param>
         /// <param name="leaf"><see langword="true"/> if leaf; otherwise <see langword="false"/></param>
         /// <returns>Allocated block</returns>
-        private IntPtr Allocate<T>(int length, T fill, bool leaf) where T : unmanaged
+        private nint Allocate<T>(int length, T fill, bool leaf) where T : unmanaged
         {
             int size = sizeof(T) * length;
 
@@ -405,7 +405,7 @@ namespace ARMeilleure.Common
                     }
                 }
 
-                page = new AddressTablePage(true, block.Block.Pointer + (IntPtr)_sparseReservedOffset);
+                page = new AddressTablePage(true, block.Block.Pointer + (nint)_sparseReservedOffset);
 
                 _sparseReservedOffset += (ulong)size;
 
@@ -413,7 +413,7 @@ namespace ARMeilleure.Common
             }
             else
             {
-                IntPtr address = (IntPtr)NativeAllocator.Instance.Allocate((uint)size);
+                nint address = (nint)NativeAllocator.Instance.Allocate((uint)size);
                 page = new AddressTablePage(false, address);
 
                 Span<T> span = new((void*)page.Address, length);

src/Ryujinx.Graphics.Gpu/Image/TextureGroup.cs

@@ -658,7 +658,7 @@ namespace Ryujinx.Graphics.Gpu.Image
 
                 bool canImport = Storage.Info.IsLinear && Storage.Info.Stride >= Storage.Info.Width * Storage.Info.FormatInfo.BytesPerPixel;
 
-                IntPtr hostPointer = canImport ? _physicalMemory.GetHostPointer(Storage.Range) : 0;
+                nint hostPointer = canImport ? _physicalMemory.GetHostPointer(Storage.Range) : 0;
 
                 if (hostPointer != 0 && _context.Renderer.PrepareHostMapping(hostPointer, Storage.Size))
                 {

src/Ryujinx.Graphics.Vulkan/Auto.cs

@@ -1,3 +1,4 @@
+using Ryujinx.Common.Logging;
 using System;
 using System.Diagnostics;
 using System.Threading;
@@ -114,7 +115,7 @@ namespace Ryujinx.Graphics.Vulkan
                 cbs.AddDependant(this);
 
                 // We need to add a dependency on the command buffer to all objects this object
-                // references aswell.
+                // references as well.
                 if (_referencedObjs != null)
                 {
                     for (int i = 0; i < _referencedObjs.Length; i++)
@@ -176,6 +177,8 @@ namespace Ryujinx.Graphics.Vulkan
                 }
             }
 
+            // This can somehow become -1.
+            // Logger.Info?.PrintMsg(LogClass.Gpu, $"_referenceCount: {_referenceCount}");
             Debug.Assert(_referenceCount >= 0);
         }
 

src/Ryujinx.Graphics.Vulkan/MoltenVK/MVKInitialization.cs

@@ -19,7 +19,7 @@ namespace Ryujinx.Graphics.Vulkan.MoltenVK
 
         public static void Initialize()
         {
-            IntPtr configSize = (nint)Marshal.SizeOf<MVKConfiguration>();
+            nint configSize = (nint)Marshal.SizeOf<MVKConfiguration>();
 
             vkGetMoltenVKConfigurationMVK(nint.Zero, out MVKConfiguration config, configSize);
 

src/Ryujinx.Graphics.Vulkan/VulkanInitialization.cs

@@ -86,7 +86,7 @@ namespace Ryujinx.Graphics.Vulkan
                 enabledExtensions = enabledExtensions.Append(ExtDebugUtils.ExtensionName).ToArray();
             }
 
-            IntPtr appName = Marshal.StringToHGlobalAnsi(AppName);
+            nint appName = Marshal.StringToHGlobalAnsi(AppName);
 
             ApplicationInfo applicationInfo = new()
             {
@@ -166,7 +166,7 @@ namespace Ryujinx.Graphics.Vulkan
 
         internal static DeviceInfo[] GetSuitablePhysicalDevices(Vk api)
         {
-            IntPtr appName = Marshal.StringToHGlobalAnsi(AppName);
+            nint appName = Marshal.StringToHGlobalAnsi(AppName);
 
             ApplicationInfo applicationInfo = new()
             {

src/Ryujinx.HLE/FileSystem/ContentManager.cs

@@ -1059,7 +1059,7 @@ namespace Ryujinx.HLE.FileSystem
             }
         }
 
-        public static bool AreKeysAlredyPresent(string pathToCheck)
+        public static bool AreKeysAlreadyPresent(string pathToCheck)
         {
             string[] fileNames = ["prod.keys", "title.keys", "console.keys", "dev.keys"];
             foreach (string file in fileNames)

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/ManagedSocket.cs

@@ -21,7 +21,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
 
         public bool Blocking { get => Socket.Blocking; set => Socket.Blocking = value; }
 
-        public nint Handle => IntPtr.Zero;
+        public nint Handle => nint.Zero;
 
         public IPEndPoint RemoteEndPoint => Socket.RemoteEndPoint as IPEndPoint;
 

src/Ryujinx.HLE/Loaders/Processes/ProcessLoader.cs

@@ -14,6 +14,7 @@ using Ryujinx.HLE.Loaders.Executables;
 using Ryujinx.HLE.Loaders.Processes.Extensions;
 using System;
 using System.Collections.Concurrent;
+using System.Collections.Generic;
 using System.IO;
 using Path = System.IO.Path;
 
@@ -27,10 +28,15 @@ namespace Ryujinx.HLE.Loaders.Processes
 
         private ulong _latestPid;
 
-        public ProcessResult ActiveApplication
+        public ProcessResult? ActiveApplication
         {
             get
             {
+                return _processesByPid.GetValueOrDefault(_latestPid);
+                
+                // Using this if statement locks up the UI and prevents a new game from loading.
+                // Haven't quite deduced why yet.
+                
                 if (!_processesByPid.TryGetValue(_latestPid, out ProcessResult value))
                     throw new RyujinxException(
                         $"The HLE Process map did not have a process with ID {_latestPid}. Are you missing firmware?");
@@ -144,7 +150,7 @@ namespace Ryujinx.HLE.Loaders.Processes
         public bool LoadUnpackedNca(string exeFsDirPath, string romFsPath = null)
         {
             ProcessResult processResult = new LocalFileSystem(exeFsDirPath).Load(_device, romFsPath);
-
+            
             if (processResult.ProcessId != 0 && _processesByPid.TryAdd(processResult.ProcessId, processResult))
             {
                 if (processResult.Start(_device))

src/Ryujinx.HLE/Loaders/Processes/ProcessResult.cs

@@ -4,7 +4,6 @@ using LibHac.Ns;
 using Ryujinx.Common.Logging;
 using Ryujinx.Cpu;
 using Ryujinx.HLE.HOS.SystemState;
-using Ryujinx.HLE.Loaders.Processes.Extensions;
 using Ryujinx.Horizon.Common;
 
 namespace Ryujinx.HLE.Loaders.Processes
@@ -52,6 +51,7 @@ namespace Ryujinx.HLE.Loaders.Processes
 
             if (metaLoader is not null)
             {
+                Logger.Info?.Print(LogClass.Application,$"metaLoader: {metaLoader}");
                 ulong programId = metaLoader.ProgramId;
 
                 Name = ApplicationControlProperties.Title[(int)titleLanguage].NameString.ToString();
@@ -71,8 +71,15 @@ namespace Ryujinx.HLE.Loaders.Processes
                 ProgramId = programId;
                 ProgramIdText = $"{programId:x16}";
                 Is64Bit = metaLoader.IsProgram64Bit;
+            } 
+            
+            else
+            {
+                Logger.Error?.Print(LogClass.Application,$"metaLoader is null !!!");
+                ProcessId = 0;
+                return;
             }
-
+            
             DiskCacheEnabled = diskCacheEnabled;
             AllowCodeMemoryForJit = allowCodeMemoryForJit;
         }

src/Ryujinx.Memory/WindowsShared/PlaceholderManager.cs

@@ -159,7 +159,7 @@ namespace Ryujinx.Memory.WindowsShared
         {
             SplitForMap((ulong)location, (ulong)size, srcOffset);
 
-            IntPtr ptr = WindowsApi.MapViewOfFile3(
+            nint ptr = WindowsApi.MapViewOfFile3(
                 sharedMemory,
                 WindowsApi.CurrentProcessHandle,
                 location,

src/Ryujinx.Tests/Memory/PartialUnmaps.cs

@@ -227,7 +227,7 @@ namespace Ryujinx.Tests.Memory
 
             // Create some info to be used for managing the native writing loop.
             int stateSize = Unsafe.SizeOf<NativeWriteLoopState>();
-            IntPtr statePtr = Marshal.AllocHGlobal(stateSize);
+            nint statePtr = Marshal.AllocHGlobal(stateSize);
             Unsafe.InitBlockUnaligned((void*)statePtr, 0, (uint)stateSize);
 
             ref NativeWriteLoopState writeLoopState = ref Unsafe.AsRef<NativeWriteLoopState>((void*)statePtr);

src/Ryujinx/Systems/AppHost.cs

@@ -62,7 +62,7 @@ using VSyncMode = Ryujinx.Common.Configuration.VSyncMode;
 
 namespace Ryujinx.Ava.Systems
 {
-    internal class AppHost
+    internal class AppHost : IDisposable
     {
         private const int CursorHideIdleTime = 5; // Hide Cursor seconds.
         private const float MaxResolutionScale = 4.0f; // Max resolution hotkeys can scale to before wrapping.
@@ -438,7 +438,7 @@ namespace Ryujinx.Ava.Systems
 
                         SaveBitmapAsPng(bitmapToSave, path);
 
-                        Logger.Notice.Print(LogClass.Application, $"Screenshot saved to {path}", "Screenshot");
+                        Logger.Notice.Print(LogClass.Application, $"Screenshot saved to '{path}'.", "Screenshot");
                     }
                 });
             }
@@ -611,27 +611,40 @@ namespace Ryujinx.Ava.Systems
 
             _isActive = false;
 
-            // NOTE: The render loop is allowed to stay alive until the renderer itself is disposed, as it may handle resource dispose.
-            // We only need to wait for all commands submitted during the main gpu loop to be processed.
-            _gpuDoneEvent.WaitOne();
-            _gpuDoneEvent.Dispose();
-
             DisplaySleep.Restore();
 
             NpadManager.Dispose();
             TouchScreenManager.Dispose();
             Device.Dispose();
+            
+            // NOTE: The render loop is allowed to stay alive until the renderer itself is disposed, as it may handle resource dispose.
+            // We only need to wait for all commands submitted during the main gpu loop to be processed.
+            // If the GPU has no work and is cancelled, we need to handle that as well.
 
+            WaitHandle.WaitAny(new[] { _gpuDoneEvent, _gpuCancellationTokenSource.Token.WaitHandle });
+            _gpuCancellationTokenSource.Dispose();
+            
+            // Waiting for work to be finished before we dispose.
+            if (_renderingStarted)
+            {
+                Device.Gpu.WaitUntilGpuReady();
+            }
+            
+            _gpuDoneEvent.Dispose();
+            
             DisposeGpu();
-
             AppExit?.Invoke(this, EventArgs.Empty);
         }
 
-        private void Dispose()
+        // MUST be public to inherit from IDisposable
+        public void Dispose()
         {
             if (Device.Processes != null)
-                MainWindowViewModel.UpdateGameMetadata(Device.Processes.ActiveApplication.ProgramIdText, _playTimer.Elapsed);
+            {
-
+                MainWindowViewModel.UpdateGameMetadata(Device.Processes.ActiveApplication?.ProgramIdText, 
+                    _playTimer.Elapsed);
+            }
+            
             ConfigurationState.Instance.System.IgnoreMissingServices.Event -= UpdateIgnoreMissingServicesState;
             ConfigurationState.Instance.Graphics.AspectRatio.Event -= UpdateAspectRatioState;
             ConfigurationState.Instance.System.EnableDockedMode.Event -= UpdateDockedModeState;
@@ -646,7 +659,6 @@ namespace Ryujinx.Ava.Systems
             _topLevel.PointerExited -= TopLevel_PointerExited;
 
             _gpuCancellationTokenSource.Cancel();
-            _gpuCancellationTokenSource.Dispose();
 
             _chrono.Stop();
             _playTimer.Stop();
@@ -672,6 +684,12 @@ namespace Ryujinx.Ava.Systems
             }
             else
             {
+                // No use waiting on something that never started work
+                if (_renderingStarted)
+                {
+                    Device.Gpu.WaitUntilGpuReady();
+                }
+                
                 Device.DisposeGpu();
             }
         }
@@ -686,7 +704,7 @@ namespace Ryujinx.Ava.Systems
             _cursorState = CursorStates.ForceChangeCursor;
         }
 
-        public async Task<bool> LoadGuestApplication(BlitStruct<ApplicationControlProperty>? customNacpData = null)
+        public async Task LoadGuestApplication(CancellationTokenSource cts, BlitStruct<ApplicationControlProperty>? customNacpData = null)
         {
             DiscordIntegrationModule.GuestAppStartedAt = Timestamps.Now;
 
@@ -715,7 +733,8 @@ namespace Ryujinx.Ava.Systems
                                 await UserErrorDialog.ShowUserErrorDialog(userError);
                                 Device.Dispose();
 
-                                return false;
+                                cts.Cancel();
+                                throw new OperationCanceledException(cts.Token);
                             }
                         }
 
@@ -724,10 +743,11 @@ namespace Ryujinx.Ava.Systems
                             await UserErrorDialog.ShowUserErrorDialog(userError);
                             Device.Dispose();
 
-                            return false;
+                            cts.Cancel();
+                            throw new OperationCanceledException(cts.Token);
                         }
 
-                        // Tell the user that we installed a firmware for them.
+                        // Tell the user that we installed firmware for them.
                         if (userError is UserError.NoFirmware)
                         {
                             firmwareVersion = ContentManager.GetCurrentFirmwareVersion();
@@ -747,7 +767,8 @@ namespace Ryujinx.Ava.Systems
                         await UserErrorDialog.ShowUserErrorDialog(userError);
                         Device.Dispose();
 
-                        return false;
+                        cts.Cancel();
+                        throw new OperationCanceledException(cts.Token);
                     }
                 }
             }
@@ -762,7 +783,8 @@ namespace Ryujinx.Ava.Systems
                 {
                     Device.Dispose();
 
-                    return false;
+                    cts.Cancel();
+                    throw new OperationCanceledException(cts.Token);
                 }
             }
             else if (Directory.Exists(ApplicationPath))
@@ -782,20 +804,24 @@ namespace Ryujinx.Ava.Systems
 
                     if (!Device.LoadCart(ApplicationPath, romFsFiles[0]))
                     {
+                        await ContentDialogHelper.CreateErrorDialog(
+                            "Please specify an unpacked game directory with a valid exefs or NSO/NRO.");
                         Device.Dispose();
 
-                        return false;
+                        cts.Cancel();
+                        throw new OperationCanceledException(cts.Token);
                     }
                 }
                 else
                 {
                     Logger.Info?.Print(LogClass.Application, "Loading as cart WITHOUT RomFS.");
-
                     if (!Device.LoadCart(ApplicationPath))
                     {
+                        await ContentDialogHelper.CreateErrorDialog(
+                            "Please specify an unpacked game directory with a valid exefs or NSO/NRO.");
                         Device.Dispose();
-
+                        cts.Cancel();
-                        return false;
+                        throw new OperationCanceledException(cts.Token);
                     }
                 }
             }
@@ -813,7 +839,8 @@ namespace Ryujinx.Ava.Systems
                             {
                                 Device.Dispose();
 
-                                return false;
+                                cts.Cancel();
+                                throw new OperationCanceledException(cts.Token);
                             }
 
                             break;
@@ -826,7 +853,8 @@ namespace Ryujinx.Ava.Systems
                             {
                                 Device.Dispose();
 
-                                return false;
+                                cts.Cancel();
+                                throw new OperationCanceledException(cts.Token);
                             }
 
                             break;
@@ -840,7 +868,8 @@ namespace Ryujinx.Ava.Systems
                             {
                                 Device.Dispose();
 
-                                return false;
+                                cts.Cancel();
+                                throw new OperationCanceledException(cts.Token);
                             }
 
                             break;
@@ -855,7 +884,8 @@ namespace Ryujinx.Ava.Systems
                                 {
                                     Device.Dispose();
 
-                                    return false;
+                                    cts.Cancel();
+                                    throw new OperationCanceledException(cts.Token);
                                 }
                             }
                             catch (ArgumentOutOfRangeException)
@@ -864,7 +894,8 @@ namespace Ryujinx.Ava.Systems
 
                                 Device.Dispose();
 
-                                return false;
+                                cts.Cancel();
+                                throw new OperationCanceledException(cts.Token);
                             }
 
                             break;
@@ -873,19 +904,18 @@ namespace Ryujinx.Ava.Systems
             }
             else
             {
-                Logger.Warning?.Print(LogClass.Application, "Please specify a valid XCI/NCA/NSP/PFS0/NRO file.");
+                Logger.Warning?.Print(LogClass.Application, "Please specify a valid XCI/NCA/NSP/PFS0/NSO/NRO file.");
 
                 Device.Dispose();
 
-                return false;
+                cts.Cancel();
+                throw new OperationCanceledException(cts.Token);
             }
 
             ApplicationLibrary.LoadAndSaveMetaData(Device.Processes.ActiveApplication.ProgramIdText,
                 appMetadata => appMetadata.UpdatePreGame()
             );
             _playTimer.Start();
-
-            return true;
         }
 
         internal void Resume()
@@ -895,7 +925,7 @@ namespace Ryujinx.Ava.Systems
             _viewModel.IsPaused = false;
             _playTimer.Start();
             _viewModel.Title = TitleHelper.ActiveApplicationTitle(Device?.Processes.ActiveApplication, Program.Version, !ConfigurationState.Instance.ShowOldUI);
-            Logger.Info?.Print(LogClass.Emulation, "Emulation was resumed");
+            Logger.Info?.Print(LogClass.Emulation, "Emulation was resumed.");
         }
 
         internal void Pause()
@@ -905,7 +935,7 @@ namespace Ryujinx.Ava.Systems
             _viewModel.IsPaused = true;
             _playTimer.Stop();
             _viewModel.Title = TitleHelper.ActiveApplicationTitle(Device?.Processes.ActiveApplication, Program.Version, !ConfigurationState.Instance.ShowOldUI, LocaleManager.Instance[LocaleKeys.Paused]);
-            Logger.Info?.Print(LogClass.Emulation, "Emulation was paused");
+            Logger.Info?.Print(LogClass.Emulation, "Emulation was paused.");
         }
 
         private void InitEmulatedSwitch()
@@ -1104,7 +1134,9 @@ namespace Ryujinx.Ava.Systems
                 // Make sure all commands in the run loop are fully executed before leaving the loop.
                 if (Device.Gpu.Renderer is ThreadedRenderer threaded)
                 {
+                    Logger.Info?.PrintMsg(LogClass.Gpu, "Flushing threaded commands...");
                     threaded.FlushThreadedCommands();
+                    Logger.Info?.PrintMsg(LogClass.Gpu, "Flushed!");
                 }
 
                 _gpuDoneEvent.Set();

src/Ryujinx/Systems/AppLibrary/ApplicationLibrary.cs

@@ -849,7 +849,8 @@ namespace Ryujinx.Ava.Systems.AppLibrary
 
             foreach (ApplicationData installedApplication in Applications.Items)
             {
-                temporary += LoadAndSaveMetaData(installedApplication.IdString).TimePlayed;
+                // this should always exist... should...
+                temporary += LoadAndSaveMetaData(installedApplication.IdString).Value.TimePlayed;
             }
 
             TotalTimePlayed = temporary;
@@ -1159,15 +1160,22 @@ namespace Ryujinx.Ava.Systems.AppLibrary
             ApplicationCountUpdated?.Invoke(null, e);
         }
 
-        public static ApplicationMetadata LoadAndSaveMetaData(string titleId, Action<ApplicationMetadata> modifyFunction = null)
+        public static Gommon.Optional<ApplicationMetadata> LoadAndSaveMetaData(string titleId, Action<ApplicationMetadata> modifyFunction = null)
         {
+            if (titleId is null)
+            {
+                Logger.Warning?.PrintMsg(LogClass.Application, "Cannot save metadata because title ID is invalid.");
+                return null;
+            }
+            
             string metadataFolder = Path.Combine(AppDataManager.GamesDirPath, titleId, "gui");
             string metadataFile = Path.Combine(metadataFolder, "metadata.json");
 
             ApplicationMetadata appMetadata;
-
+            
             if (!File.Exists(metadataFile))
             {
+                Logger.Info?.Print(LogClass.Application, $"Metadata file does not exist. Creating metadata for {titleId}...");
                 Directory.CreateDirectory(metadataFolder);
 
                 appMetadata = new ApplicationMetadata();
@@ -1177,12 +1185,12 @@ namespace Ryujinx.Ava.Systems.AppLibrary
 
             try
             {
+                Logger.Debug?.Print(LogClass.Application, $"Deserializing metadata for {titleId}...");
                 appMetadata = JsonHelper.DeserializeFromFile(metadataFile, _serializerContext.ApplicationMetadata);
             }
             catch (JsonException)
             {
                 Logger.Warning?.Print(LogClass.Application, $"Failed to parse metadata json for {titleId}. Loading defaults.");
-
                 appMetadata = new ApplicationMetadata();
             }
 

src/Ryujinx/Systems/DiscordIntegrationModule.cs

@@ -82,7 +82,7 @@ namespace Ryujinx.Ava.Systems
 
         public static void Use(Optional<string> titleId)
         {
-            if (titleId.TryGet(out string tid))
+            if (titleId.TryGet(out string tid) && Switch.Shared.Processes.ActiveApplication is not null)
                 SwitchToPlayingState(
                     ApplicationLibrary.LoadAndSaveMetaData(tid),
                     Switch.Shared.Processes.ActiveApplication

src/Ryujinx/UI/Models/SaveModel.cs

@@ -57,8 +57,15 @@ namespace Ryujinx.Ava.UI.Models
             }
             else
             {
-                ApplicationMetadata appMetadata = ApplicationLibrary.LoadAndSaveMetaData(TitleIdString);
+                Gommon.Optional<ApplicationMetadata> appMetadata = ApplicationLibrary.LoadAndSaveMetaData(TitleIdString);
-                Title = appMetadata.Title ?? TitleIdString;
+                if (appMetadata != null)
+                {
+                    Title = appMetadata.Value.Title ?? TitleIdString;
+                }
+                else
+                {
+                    Title = "<INVALID>";
+                }
             }
 
             Task.Run(() =>

src/Ryujinx/UI/ViewModels/MainWindowViewModel.cs

@@ -1029,7 +1029,7 @@ namespace Ryujinx.Ava.UI.ViewModels
                 string dialogMessage =
                     LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogKeysInstallerKeysInstallMessage);
 
-                if (ContentManager.AreKeysAlredyPresent(systemDirectory))
+                if (ContentManager.AreKeysAlreadyPresent(systemDirectory))
                 {
                     dialogMessage +=
                         LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys
@@ -1703,11 +1703,6 @@ namespace Ryujinx.Ava.UI.ViewModels
 
             Logger.RestartTime();
 
-            SelectedIcon ??= ApplicationLibrary.GetApplicationIcon(application.Path,
-                ConfigurationState.Instance.System.Language, application.Id);
-
-            PrepareLoadScreen();
-
             RendererHostControl = new RendererHost();
 
             AppHost = new AppHost(
@@ -1721,18 +1716,34 @@ namespace Ryujinx.Ava.UI.ViewModels
                 UserChannelPersistence,
                 this,
                 TopLevel);
+            
+            CancellationTokenSource cts = new CancellationTokenSource();
 
-            if (!await AppHost.LoadGuestApplication(customNacpData))
+            try
             {
+                await AppHost.LoadGuestApplication(cts, customNacpData);
+            }
+            catch (OperationCanceledException exception)
+            {
+                Logger.Info?.Print(LogClass.Application,
+                    "LoadGuestApplication was interrupted !!! " + exception.Message);
                 AppHost.DisposeContext();
                 AppHost = null;
-
                 return;
             }
-
+            finally
+            {
+                cts.Dispose();
+            }
+            
             CanUpdate = false;
 
             application.Name ??= AppHost.Device.Processes.ActiveApplication.Name;
+            
+            SelectedIcon ??= ApplicationLibrary.GetApplicationIcon(application.Path,
+                ConfigurationState.Instance.System.Language, application.Id);
+
+            PrepareLoadScreen();
 
             LoadHeading = LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.LoadingHeading, application.Name);
 
@@ -1754,9 +1765,9 @@ namespace Ryujinx.Ava.UI.ViewModels
                 RendererHostControl.Focus();
             });
 
-        public static void UpdateGameMetadata(string titleId, TimeSpan playTime)
+        public static void UpdateGameMetadata(string titleId, TimeSpan playTime) 
             => ApplicationLibrary.LoadAndSaveMetaData(titleId, appMetadata => appMetadata.UpdatePostGame(playTime));
-
+        
         public void RefreshFirmwareStatus()
         {
             SystemVersion version = null;