linux-packaging-mono/mcs/class/referencesource/System/compmod/microsoft/win32/safehandles/SafeThreadHandle.cs

// ==++==
// 
//   Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// ==--==
/*============================================================
**
** Class:  SafeThreadHandle 
**
**
** A wrapper for a thread handle
**
** 
===========================================================*/

using System;
using System.Security;
using System.Diagnostics;
using System.Security.Permissions;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using Microsoft.Win32;
using Microsoft.Win32.SafeHandles;
using System.Runtime.ConstrainedExecution;

namespace Microsoft.Win32.SafeHandles {
    [SuppressUnmanagedCodeSecurityAttribute]
    internal sealed class SafeThreadHandle : SafeHandleZeroOrMinusOneIsInvalid
    { 
        internal SafeThreadHandle() : base(true) {
        } 

        internal void InitialSetHandle(IntPtr h){
            Debug.Assert(base.IsInvalid, "Safe handle should only be set once");
            base.SetHandle(h);
         }
        
        override  protected bool ReleaseHandle() {
            return SafeNativeMethods.CloseHandle(handle);
        }

    }
}