UI: Move Match PC Time to next to the time selector & change label & tooltip to clarify behavior further.

src/Ryujinx.Cpu/AppleHv/HvMemoryManager.cs

@@ -230,25 +230,20 @@ namespace Ryujinx.Cpu.AppleHv
         {
             if (size == 0)
             {
-                return Enumerable.Empty<HostMemoryRange>();
+                yield break;
             }
 
             var guestRegions = GetPhysicalRegionsImpl(va, size);
             if (guestRegions == null)
             {
-                return null;
+                yield break;
             }
 
-            var regions = new HostMemoryRange[guestRegions.Count];
-
-            for (int i = 0; i < regions.Length; i++)
+            foreach (var guestRegion in guestRegions)
             {
-                var guestRegion = guestRegions[i];
                 nint pointer = _backingMemory.GetPointer(guestRegion.Address, guestRegion.Size);
-                regions[i] = new HostMemoryRange((nuint)(ulong)pointer, guestRegion.Size);
+                yield return new HostMemoryRange((nuint)(ulong)pointer, guestRegion.Size);
             }
-
-            return regions;
         }
 
         /// <inheritdoc/>
@@ -256,23 +251,24 @@ namespace Ryujinx.Cpu.AppleHv
         {
             if (size == 0)
             {
-                return Enumerable.Empty<MemoryRange>();
+                yield break;
             }
 
-            return GetPhysicalRegionsImpl(va, size);
+            foreach (var physicalRegion in GetPhysicalRegionsImpl(va, size))
+            {
+                yield return physicalRegion;
+            }
         }
 
-        private List<MemoryRange> GetPhysicalRegionsImpl(ulong va, ulong size)
+        private IEnumerable<MemoryRange> GetPhysicalRegionsImpl(ulong va, ulong size)
         {
             if (!ValidateAddress(va) || !ValidateAddressAndSize(va, size))
             {
-                return null;
+                yield break;
             }
 
             int pages = GetPagesCount(va, (uint)size, out va);
 
-            var regions = new List<MemoryRange>();
-
             ulong regionStart = GetPhysicalAddressInternal(va);
             ulong regionSize = PageSize;
 
@@ -280,14 +276,14 @@ namespace Ryujinx.Cpu.AppleHv
             {
                 if (!ValidateAddress(va + PageSize))
                 {
-                    return null;
+                    yield break;
                 }
 
                 ulong newPa = GetPhysicalAddressInternal(va + PageSize);
 
                 if (GetPhysicalAddressInternal(va) + PageSize != newPa)
                 {
-                    regions.Add(new MemoryRange(regionStart, regionSize));
+                    yield return new MemoryRange(regionStart, regionSize);
                     regionStart = newPa;
                     regionSize = 0;
                 }
@@ -296,9 +292,7 @@ namespace Ryujinx.Cpu.AppleHv
                 regionSize += PageSize;
             }
 
-            regions.Add(new MemoryRange(regionStart, regionSize));
-
-            return regions;
+            yield return new MemoryRange(regionStart, regionSize);
         }
 
         /// <remarks>

src/Ryujinx.Cpu/Jit/MemoryManager.cs

@@ -250,25 +250,20 @@ namespace Ryujinx.Cpu.Jit
         {
             if (size == 0)
             {
-                return Enumerable.Empty<HostMemoryRange>();
+                yield break;
             }
 
             var guestRegions = GetPhysicalRegionsImpl(va, size);
             if (guestRegions == null)
             {
-                return null;
+                yield break;
             }
 
-            var regions = new HostMemoryRange[guestRegions.Count];
-
-            for (int i = 0; i < regions.Length; i++)
+            foreach (var guestRegion in guestRegions)
             {
-                var guestRegion = guestRegions[i];
                 nint pointer = _backingMemory.GetPointer(guestRegion.Address, guestRegion.Size);
-                regions[i] = new HostMemoryRange((nuint)(ulong)pointer, guestRegion.Size);
+                yield return new HostMemoryRange((nuint)(ulong)pointer, guestRegion.Size);
             }
-
-            return regions;
         }
 
         /// <inheritdoc/>
@@ -276,23 +271,24 @@ namespace Ryujinx.Cpu.Jit
         {
             if (size == 0)
             {
-                return Enumerable.Empty<MemoryRange>();
+                yield break;
             }
 
-            return GetPhysicalRegionsImpl(va, size);
+            foreach (var physicalRegion in GetPhysicalRegionsImpl(va, size))
+            {
+                yield return physicalRegion;
+            }
         }
 
-        private List<MemoryRange> GetPhysicalRegionsImpl(ulong va, ulong size)
+        private IEnumerable<MemoryRange> GetPhysicalRegionsImpl(ulong va, ulong size)
         {
             if (!ValidateAddress(va) || !ValidateAddressAndSize(va, size))
             {
-                return null;
+                yield break;
             }
 
             int pages = GetPagesCount(va, (uint)size, out va);
 
-            var regions = new List<MemoryRange>();
-
             ulong regionStart = GetPhysicalAddressInternal(va);
             ulong regionSize = PageSize;
 
@@ -300,14 +296,14 @@ namespace Ryujinx.Cpu.Jit
             {
                 if (!ValidateAddress(va + PageSize))
                 {
-                    return null;
+                    yield break;
                 }
 
                 ulong newPa = GetPhysicalAddressInternal(va + PageSize);
 
                 if (GetPhysicalAddressInternal(va) + PageSize != newPa)
                 {
-                    regions.Add(new MemoryRange(regionStart, regionSize));
+                    yield return new MemoryRange(regionStart, regionSize);
                     regionStart = newPa;
                     regionSize = 0;
                 }
@@ -316,9 +312,7 @@ namespace Ryujinx.Cpu.Jit
                 regionSize += PageSize;
             }
 
-            regions.Add(new MemoryRange(regionStart, regionSize));
-
-            return regions;
+            yield return new MemoryRange(regionStart, regionSize);
         }
 
         /// <inheritdoc/>

src/Ryujinx.Cpu/Jit/MemoryManagerHostTracked.cs

@@ -475,17 +475,15 @@ namespace Ryujinx.Cpu.Jit
             return GetPhysicalRegionsImpl(va, size);
         }
 
-        private List<MemoryRange> GetPhysicalRegionsImpl(ulong va, ulong size)
+        private IEnumerable<MemoryRange> GetPhysicalRegionsImpl(ulong va, ulong size)
         {
             if (!ValidateAddress(va) || !ValidateAddressAndSize(va, size))
             {
-                return null;
+                yield break;
             }
 
             int pages = GetPagesCount(va, (uint)size, out va);
 
-            var regions = new List<MemoryRange>();
-
             ulong regionStart = GetPhysicalAddressInternal(va);
             ulong regionSize = PageSize;
 
@@ -493,14 +491,14 @@ namespace Ryujinx.Cpu.Jit
             {
                 if (!ValidateAddress(va + PageSize))
                 {
-                    return null;
+                    yield break;
                 }
 
                 ulong newPa = GetPhysicalAddressInternal(va + PageSize);
 
                 if (GetPhysicalAddressInternal(va) + PageSize != newPa)
                 {
-                    regions.Add(new MemoryRange(regionStart, regionSize));
+                    yield return new MemoryRange(regionStart, regionSize);
                     regionStart = newPa;
                     regionSize = 0;
                 }
@@ -509,9 +507,7 @@ namespace Ryujinx.Cpu.Jit
                 regionSize += PageSize;
             }
 
-            regions.Add(new MemoryRange(regionStart, regionSize));
-
-            return regions;
+            yield return new MemoryRange(regionStart, regionSize);
         }
 
         /// <inheritdoc/>

src/Ryujinx.Cpu/LightningJit/CodeGen/Arm64/StackWalker.cs

@@ -8,8 +8,6 @@ namespace Ryujinx.Cpu.LightningJit.CodeGen.Arm64
     {
         public IEnumerable<ulong> GetCallStack(nint framePointer, nint codeRegionStart, int codeRegionSize, nint codeRegion2Start, int codeRegion2Size)
         {
-            List<ulong> functionPointers = new();
-
             while (true)
             {
                 nint functionPointer = Marshal.ReadIntPtr(framePointer, nint.Size);
@@ -20,11 +18,9 @@ namespace Ryujinx.Cpu.LightningJit.CodeGen.Arm64
                     break;
                 }
 
-                functionPointers.Add((ulong)functionPointer - 4);
+                yield return (ulong)functionPointer - 4;
                 framePointer = Marshal.ReadIntPtr(framePointer);
             }
-
-            return functionPointers;
         }
     }
 }

src/Ryujinx.Graphics.Vulkan/BufferMirrorRangeList.cs

@@ -168,16 +168,14 @@ namespace Ryujinx.Graphics.Vulkan
             return BinarySearch(list, offset, size) >= 0;
         }
 
-        public readonly List<Range> FindOverlaps(int offset, int size)
+        public readonly IEnumerable<Range> FindOverlaps(int offset, int size)
         {
             var list = _ranges;
             if (list == null)
             {
-                return null;
+                yield break;
             }
 
-            List<Range> result = null;
-
             int index = BinarySearch(list, offset, size);
 
             if (index >= 0)
@@ -189,12 +187,10 @@ namespace Ryujinx.Graphics.Vulkan
 
                 do
                 {
-                    (result ??= new List<Range>()).Add(list[index++]);
+                    yield return list[index++];
                 }
                 while (index < list.Count && list[index].OverlapsWith(offset, size));
             }
-
-            return result;
         }
 
         private static int BinarySearch(List<Range> list, int offset, int size)

src/Ryujinx.HLE/HOS/Horizon.cs

@@ -341,7 +341,7 @@ namespace Ryujinx.HLE.HOS
         {
             if (VirtualAmiibo.ApplicationBytes.Length > 0)
             {
-                VirtualAmiibo.ApplicationBytes = new byte[0];
+                VirtualAmiibo.ApplicationBytes = Array.Empty<byte>();
                 VirtualAmiibo.InputBin = string.Empty;
             }
             if (NfpDevices[nfpDeviceId].State == NfpDeviceState.SearchingForTag)
@@ -356,7 +356,7 @@ namespace Ryujinx.HLE.HOS
             VirtualAmiibo.InputBin = path;
             if (VirtualAmiibo.ApplicationBytes.Length > 0)
             {
-                VirtualAmiibo.ApplicationBytes = new byte[0];
+                VirtualAmiibo.ApplicationBytes = Array.Empty<byte>();
             }
             byte[] encryptedData = File.ReadAllBytes(path);
             VirtualAmiiboFile newFile = AmiiboBinReader.ReadBinFile(encryptedData);

src/Ryujinx.HLE/HOS/ModLoader.cs

@@ -357,7 +357,6 @@ namespace Ryujinx.HLE.HOS
         {
             string cheatName = DefaultCheatName;
             List<string> instructions = new();
-            List<Cheat> cheats = new();
 
             using StreamReader cheatData = cheatFile.OpenText();
             while (cheatData.ReadLine() is { } line)
@@ -373,13 +372,13 @@ namespace Ryujinx.HLE.HOS
 
                         Logger.Warning?.Print(LogClass.ModLoader, $"Ignoring cheat '{cheatFile.FullName}' because it is malformed");
 
-                        return Array.Empty<Cheat>();
+                        yield break;
                     }
 
                     // Add the previous section to the list.
                     if (instructions.Count > 0)
                     {
-                        cheats.Add(new Cheat($"<{cheatName} Cheat>", cheatFile, instructions));
+                        yield return new Cheat($"<{cheatName} Cheat>", cheatFile, instructions);
                     }
 
                     // Start a new cheat section.
@@ -396,10 +395,8 @@ namespace Ryujinx.HLE.HOS
             // Add the last section being processed.
             if (instructions.Count > 0)
             {
-                cheats.Add(new Cheat($"<{cheatName} Cheat>", cheatFile, instructions));
+                yield return new Cheat($"<{cheatName} Cheat>", cheatFile, instructions);
             }
-
-            return cheats;
         }
 
         // Assumes searchDirPaths don't overlap

src/Ryujinx.HLE/HOS/Services/Nfc/Nfp/VirtualAmiibo.cs

@@ -16,7 +16,7 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.Nfp
     static class VirtualAmiibo
     {
         public static uint OpenedApplicationAreaId;
-        public static byte[] ApplicationBytes = new byte[0];
+        public static byte[] ApplicationBytes = Array.Empty<byte>();
         public static string InputBin = string.Empty;
         public static string NickName = string.Empty;
         private static readonly AmiiboJsonSerializerContext _serializerContext = AmiiboJsonSerializerContext.Default;
@@ -137,7 +137,7 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.Nfp
             if (ApplicationBytes.Length > 0)
             {
                 byte[] bytes = ApplicationBytes;
-                ApplicationBytes = new byte[0];
+                ApplicationBytes = Array.Empty<byte>();
                 return bytes;
             }
             VirtualAmiiboFile virtualAmiiboFile = LoadAmiiboFile(amiiboId);

src/Ryujinx.Memory/AddressSpaceManager.cs

@@ -106,10 +106,13 @@ namespace Ryujinx.Memory
         {
             if (size == 0)
             {
-                return Enumerable.Empty<HostMemoryRange>();
+                yield break;
             }
 
-            return GetHostRegionsImpl(va, size);
+            foreach (var hostRegion in GetHostRegionsImpl(va, size))
+            {
+                yield return hostRegion;
+            }
         }
 
         /// <inheritdoc/>
@@ -117,51 +120,36 @@ namespace Ryujinx.Memory
         {
             if (size == 0)
             {
-                return Enumerable.Empty<MemoryRange>();
+                yield break;
             }
 
             var hostRegions = GetHostRegionsImpl(va, size);
             if (hostRegions == null)
             {
-                return null;
+                yield break;
             }
 
-            var regions = new MemoryRange[hostRegions.Count];
-
             ulong backingStart = (ulong)_backingMemory.Pointer;
             ulong backingEnd = backingStart + _backingMemory.Size;
 
-            int count = 0;
-
-            for (int i = 0; i < regions.Length; i++)
+            foreach (var hostRegion in hostRegions)
             {
-                var hostRegion = hostRegions[i];
-
                 if (hostRegion.Address >= backingStart && hostRegion.Address < backingEnd)
                 {
-                    regions[count++] = new MemoryRange(hostRegion.Address - backingStart, hostRegion.Size);
+                    yield return new MemoryRange(hostRegion.Address - backingStart, hostRegion.Size);
                 }
             }
-
-            if (count != regions.Length)
-            {
-                return new ArraySegment<MemoryRange>(regions, 0, count);
-            }
-
-            return regions;
         }
 
-        private List<HostMemoryRange> GetHostRegionsImpl(ulong va, ulong size)
+        private IEnumerable<HostMemoryRange> GetHostRegionsImpl(ulong va, ulong size)
         {
             if (!ValidateAddress(va) || !ValidateAddressAndSize(va, size))
             {
-                return null;
+                yield break;
             }
 
             int pages = GetPagesCount(va, size, out va);
 
-            var regions = new List<HostMemoryRange>();
-
             nuint regionStart = GetHostAddress(va);
             ulong regionSize = PageSize;
 
@@ -169,14 +157,14 @@ namespace Ryujinx.Memory
             {
                 if (!ValidateAddress(va + PageSize))
                 {
-                    return null;
+                    yield break;
                 }
 
                 nuint newHostAddress = GetHostAddress(va + PageSize);
 
                 if (GetHostAddress(va) + PageSize != newHostAddress)
                 {
-                    regions.Add(new HostMemoryRange(regionStart, regionSize));
+                    yield return new HostMemoryRange(regionStart, regionSize);
                     regionStart = newHostAddress;
                     regionSize = 0;
                 }
@@ -185,9 +173,7 @@ namespace Ryujinx.Memory
                 regionSize += PageSize;
             }
 
-            regions.Add(new HostMemoryRange(regionStart, regionSize));
-
-            return regions;
+            yield return new HostMemoryRange(regionStart, regionSize);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]

src/Ryujinx/Assets/locales.json

@@ -3771,7 +3771,7 @@
         "ar_SA": "",
         "de_DE": "",
         "el_GR": "",
-        "en_US": "Match PC Time",
+        "en_US": "Resync to PC Date & Time",
         "es_ES": "",
         "fr_FR": "",
         "he_IL": "",
@@ -14571,7 +14571,7 @@
         "ar_SA": "",
         "de_DE": "",
         "el_GR": "",
-        "en_US": "Change System Time to match your PC's date & time.",
+        "en_US": "Resync System Time to match your PC's current date & time.\n\nThis is not an active setting, it can still fall out of sync; in which case just click this button again.",
         "es_ES": "",
         "fr_FR": "",
         "he_IL": "",

src/Ryujinx/UI/Views/Settings/SettingsSystemView.axaml

@@ -181,15 +181,11 @@
                             SelectedTime="{Binding CurrentTime}"
                             Width="350"
                             ToolTip.Tip="{ext:Locale TimeTooltip}" />
-                    </StackPanel>
-                    <StackPanel
-                        Margin="350,0,0,10"
-                        Orientation="Horizontal">
                         <Button
+                            Margin="10, 0, 0, 0"
                             VerticalAlignment="Center"
                             Click="MatchSystemTime_OnClick"
                             Background="{DynamicResource SystemAccentColor}"
-                            Width="150"
                             ToolTip.Tip="{ext:Locale MatchTimeTooltip}">
                             <TextBlock Text="{ext:Locale SettingsTabSystemSystemTimeMatch}" />
                         </Button>

src/Ryujinx/UI/Views/Settings/SettingsSystemView.axaml.cs

@@ -1,7 +1,7 @@
+using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
 using Ryujinx.Ava.UI.ViewModels;
-using System;
 using TimeZone = Ryujinx.Ava.UI.Models.TimeZone;
 
 namespace Ryujinx.Ava.UI.Views.Settings