1 files changed, 70 insertions, 0 deletions
diff --git a/Ryujinx.Core/OsHle/Handles/HSharedMem.cs b/Ryujinx.Core/OsHle/Handles/HSharedMem.cs
new file mode 100644
index 00000000..3d56ff92
--- /dev/null
+++ b/Ryujinx.Core/OsHle/Handles/HSharedMem.cs
@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.Core.OsHle.Handles
+{
+    class HSharedMem
+    {
+        private List<long> Positions;
+
+        public int PositionsCount => Positions.Count;
+
+        public EventHandler<EventArgs> MemoryMapped;
+        public EventHandler<EventArgs> MemoryUnmapped;
+
+        public HSharedMem(long PhysPos)
+        {
+            Positions = new List<long>();
+        }
+
+        public void AddVirtualPosition(long Position)
+        {
+            lock (Positions)
+            {
+                Positions.Add(Position);
+
+                MemoryMapped?.Invoke(this, EventArgs.Empty);
+            }
+        }
+
+        public void RemoveVirtualPosition(long Position)
+        {
+            lock (Positions)
+            {
+                Positions.Remove(Position);
+
+                MemoryUnmapped?.Invoke(this, EventArgs.Empty);
+            }
+        }
+
+        public long GetVirtualPosition(int Index)
+        {
+            lock (Positions)
+            {
+                if (Index < 0 || Index >= Positions.Count)
+                {
+                    throw new ArgumentOutOfRangeException(nameof(Index));
+                }
+
+                return Positions[Index];
+            }
+        }
+
+        public bool TryGetLastVirtualPosition(out long Position)
+        {
+            lock (Positions)
+            {
+                if (Positions.Count > 0)
+                {
+                    Position = Positions[Positions.Count - 1];
+
+                    return true;
+                }
+
+                Position = 0;
+
+                return false;
+            }
+        }
+    }
+}
+\ No newline at end of file