Initial commit

Infra/Buffers/UnmanagedMemory.cs

@@ -0,0 +1,28 @@
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace StitchATon2.Infra.Buffers;
+
+internal sealed unsafe class UnmanagedMemory<T> : IBuffer<T> where T : unmanaged
+{
+    private readonly void* _pointer;
+    private readonly int _count;
+
+    public ref T this[int index] => ref Unsafe.AsRef<T>((T*)_pointer + index); // *((T*)_pointer + index);
+
+    public Span<T> Span => new(_pointer, _count);
+
+    public UnmanagedMemory(int count)
+    {
+        _pointer = NativeMemory.Alloc((nuint)count, (nuint)Unsafe.SizeOf<T>());
+        _count = count;
+    }
+    
+    ~UnmanagedMemory() => Dispose();
+
+    public void Dispose()
+    {
+        NativeMemory.Free(_pointer);
+        GC.SuppressFinalize(this);
+    }
+}