CurtHagenlocher commented on issue #99:
URL: https://github.com/apache/arrow-dotnet/issues/99#issuecomment-4100307262
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;
}
}
```
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