File size: 2,161 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | // Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Management.Automation.InteropServices;
namespace System.Management.Automation.ComInterop
{
/// <summary>
/// ComEventSinksContainer is just a regular list with a finalizer.
/// This list is usually attached as a custom data for RCW object and
/// is finalized whenever RCW is finalized.
/// </summary>
internal class ComEventSinksContainer : List<ComEventsSink>, IDisposable
{
private ComEventSinksContainer()
{
}
private static readonly object s_comObjectEventSinksKey = new object();
public static ComEventSinksContainer FromRuntimeCallableWrapper(object rcw, bool createIfNotFound)
{
object data = Marshal.GetComObjectData(rcw, s_comObjectEventSinksKey);
if (data != null || !createIfNotFound)
{
return (ComEventSinksContainer)data;
}
lock (s_comObjectEventSinksKey)
{
data = Marshal.GetComObjectData(rcw, s_comObjectEventSinksKey);
if (data != null)
{
return (ComEventSinksContainer)data;
}
ComEventSinksContainer comEventSinks = new ComEventSinksContainer();
if (!Marshal.SetComObjectData(rcw, s_comObjectEventSinksKey, comEventSinks))
{
throw Error.SetComObjectDataFailed();
}
return comEventSinks;
}
}
#region IDisposable Members
public void Dispose()
{
DisposeAll();
GC.SuppressFinalize(this);
}
#endregion
private void DisposeAll()
{
foreach (ComEventsSink sink in this)
{
ComEventsSink.RemoveAll(sink);
}
}
~ComEventSinksContainer()
{
DisposeAll();
}
}
}
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