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Added IntPtr.AsRef extension method

pull/180/head
dahall 2020-11-10 21:35:58 -07:00
parent 317947d16b
commit c2640876c3
1 changed files with 9 additions and 0 deletions
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9
Core/Extensions/InteropExtensions.cs
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@ -42,6 +42,15 @@ namespace Vanara.Extensions
return new ReadOnlySpan<T>((ptr + prefixBytes).ToPointer(), length);
}
/// <summary>Gets a reference to a structure based on this allocated memory.</summary>
/// <typeparam name="T">The type of items in the <see cref="Span{T}"/>.</typeparam>
/// <param name="ptr">A pointer to the starting address of a specified number of <typeparamref name="T"/> elements in memory.</param>
/// <param name="prefixBytes">Bytes to skip before starting the span.</param>
/// <param name="allocatedBytes">If known, the total number of bytes allocated to the native memory in <paramref name="ptr"/>.</param>
/// <returns>A referenced structure.</returns>
public static ref T AsRef<T>(this IntPtr ptr, int prefixBytes = 0, SizeT allocatedBytes = default) =>
ref MemoryMarshal.GetReference(AsSpan<T>(ptr, 1, prefixBytes, allocatedBytes));
/// <summary>Returns the pointer as a <see cref="Span{T}"/>.</summary>
/// <typeparam name="T">The type of items in the <see cref="Span{T}"/>.</typeparam>
/// <param name="ptr">A pointer to the starting address of a specified number of <typeparamref name="T"/> elements in memory.</param>