SecurityContextTokenHandle.cs

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using System.Threading;
using Microsoft.Win32.SafeHandles;
 
namespace System.Net.Security;
 
internal sealed class SecurityContextTokenHandle : CriticalHandleZeroOrMinusOneIsInvalid
{
    private int _disposed;
 
    internal IntPtr DangerousGetHandle()
    {
        return handle;
    }
 
    protected override bool ReleaseHandle()
    {
        if (!IsInvalid && Interlocked.Increment(ref _disposed) == 1)
        {
            return global::Interop.Kernel32.CloseHandle(handle);
        }
        return true;
    }
}