Use System.Runtime.InteropServices.NativeMemory on modern .NET #99

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1. CurtHagenlocher

   added the

   Feature

   issue type on Oct 1, 2025
2. CurtHagenlocher commented on Mar 20, 2026

   

   CurtHagenlocher

   on Mar 20, 2026

   Last edited by CurtHagenlocher

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   Can also use the following on older .NET:

   internal static class AlignedMalloc
   {
       // Allocate aligned memory
       [DllImport("ucrtbase.dll", CallingConvention = CallingConvention.Cdecl)]
       internal static extern IntPtr _aligned_malloc(
           UIntPtr size,
           UIntPtr alignment);
   
       // Free aligned memory
       [DllImport("ucrtbase.dll", CallingConvention = CallingConvention.Cdecl)]
       internal static extern void _aligned_free(
           IntPtr memblock);
   
       // Optional: reallocate aligned memory
       [DllImport("ucrtbase.dll", CallingConvention = CallingConvention.Cdecl)]
       internal static extern IntPtr _aligned_realloc(
           IntPtr memblock,
           UIntPtr size,
           UIntPtr alignment);
   
       [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
       static extern IntPtr LoadLibrary(string lpFileName);
   
       [DllImport("kernel32.dll", SetLastError = true)]
       static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
   
       public static bool HasAlignedMalloc()
       {
           IntPtr h = LoadLibrary("ucrtbase.dll");
           if (h == IntPtr.Zero)
               return false;
   
           return GetProcAddress(h, "_aligned_malloc") != IntPtr.Zero;
       }
   }