sean-m
/
Vanara
mirror of https://github.com/dahall/Vanara.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Added SafeAllocatedMemoryHandleBase.HandleChanged event and overrode SetHandle

nullableenabled
David Hall 2024-04-23 08:24:12 -06:00
parent a0bf0b3164
commit 4d17d7143e
1 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Core/InteropServices/SafeMemoryHandle.cs
View File

@ -261,6 +261,9 @@ public abstract class MemoryMethodsBase : IMemoryMethods
/// <seealso cref="SafeHandle"/>
public abstract class SafeAllocatedMemoryHandleBase : SafeHandle, IComparable<SafeAllocatedMemoryHandleBase>, IEquatable<SafeAllocatedMemoryHandleBase>
{
/// <summary>Occurs when the handle has changed.</summary>
public event EventHandler<IntPtr>? HandleChanged;
/// <summary>Initializes a new instance of the <see cref="SafeAllocatedMemoryHandleBase"/> class.</summary>
/// <param name="handle">The handle.</param>
/// <param name="ownsHandle">if set to <c>true</c> if this class is responsible for freeing the memory on disposal.</param>
@ -401,6 +404,14 @@ public abstract class SafeAllocatedMemoryHandleBase : SafeHandle, IComparable<Sa
finally { Unlock(); }
}
/// <summary>Sets the handle to the specified pre-existing handle.</summary>
/// <param name="h">The pre-existing handle to use.</param>
/// <remarks>
/// Use the SetHandle method only if you need to support a pre-existing handle (for example, if the handle is returned in a structure)
/// because the .NET Framework COM interop infrastructure does not support marshaling output handles in a structure.
/// </remarks>
new protected void SetHandle(IntPtr h) { base.SetHandle(h); HandleChanged?.Invoke(this, h); }
private class SafeBufferImpl : SafeBuffer
{
public SafeBufferImpl(SafeAllocatedMemoryHandleBase hMem) : base(false) => Initialize((ulong)hMem.Size);