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Updated documentation, added mem-zeroing on array set

pull/60/head
David Hall 2019-04-24 08:26:50 -06:00
parent 2fff530939
commit 8770bc4bae
1 changed files with 9 additions and 1 deletions
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10
PInvoke/Shared/InteropServices/SafeElementArray.cs
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@ -11,6 +11,9 @@ namespace Vanara.InteropServices
/// A safe unmanaged array of structures allocated on the global heap with a prefix type (usually a uint or int) that determines the
/// count of elements.
/// </summary>
/// <typeparam name="TElem">The type of the array elements.</typeparam>
/// <typeparam name="TPrefix">The type of the value used to represent the number of elements in the array.</typeparam>
/// <typeparam name="TMem">The memory methods to use for allocation.</typeparam>
public class SafeElementArray<TElem, TPrefix, TMem> : SafeMemoryHandle<TMem>, IEnumerable<TElem> where TMem : IMemoryMethods, new() where TElem : struct where TPrefix : IConvertible
{
private static readonly int ElemSize = Marshal.SizeOf(typeof(TElem));
@ -31,7 +34,11 @@ namespace Vanara.InteropServices
/// </summary>
/// <param name="array">The array of bytes to copy.</param>
/// <param name="getElemSize">Size of the get elem.</param>
protected SafeElementArray(TElem[] array, Func<TElem, int> getElemSize = null) : base(IntPtr.Zero, 0, true) { GetElemSize = getElemSize; Elements = array; }
protected SafeElementArray(TElem[] array, Func<TElem, int> getElemSize = null) : base(IntPtr.Zero, 0, true)
{
GetElemSize = getElemSize;
Elements = array;
}
/// <summary>Initializes a new instance of the <see cref="SafeElementArray{TElem, TPrefix, TMem}"/> class.</summary>
/// <param name="byteSize">Size of the byte.</param>
@ -62,6 +69,7 @@ namespace Vanara.InteropServices
set
{
Size = GetElemSize != null ? PrefixSize + value.Sum(GetElemSize) : GetRequiredSize(value.Length);
Zero();
InteropExtensions.MarshalToPtr(value, handle, PrefixSize);
IntCount = value.Length;
}