99 lines
3.3 KiB
C#
99 lines
3.3 KiB
C#
/* ****************************************************************************
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*
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* Copyright (c) Microsoft Corporation.
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*
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* This source code is subject to terms and conditions of the Microsoft Public License. A
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* copy of the license can be found in the License.html file at the root of this distribution. If
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* you cannot locate the Microsoft Public License, please send an email to
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* dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
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* by the terms of the Microsoft Public License.
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*
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* You must not remove this notice, or any other, from this software.
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*
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*
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* ***************************************************************************/
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using System; using Microsoft;
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#if !SILVERLIGHT // ComObject
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Security;
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#if CODEPLEX_40
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namespace System.Dynamic {
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#else
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namespace Microsoft.Scripting {
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#endif
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/// <summary>
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/// ComEventSinksContainer is just a regular list with a finalizer.
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/// This list is usually attached as a custom data for RCW object and
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/// is finalized whenever RCW is finalized.
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/// </summary>
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internal class ComEventSinksContainer : List<ComEventSink>, IDisposable {
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private ComEventSinksContainer() {
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}
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private static readonly object _ComObjectEventSinksKey = new object();
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2201:DoNotRaiseReservedExceptionTypes")]
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1002:DoNotExposeGenericLists")]
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[SecurityCritical]
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public static ComEventSinksContainer FromRuntimeCallableWrapper(object rcw, bool createIfNotFound) {
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// !!! Marshal.Get/SetComObjectData has a LinkDemand for UnmanagedCode which will turn into
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// a full demand. We need to avoid this by making this method SecurityCritical
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object data = Marshal.GetComObjectData(rcw, _ComObjectEventSinksKey);
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if (data != null || createIfNotFound == false) {
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return (ComEventSinksContainer)data;
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}
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lock (_ComObjectEventSinksKey) {
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data = Marshal.GetComObjectData(rcw, _ComObjectEventSinksKey);
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if (data != null) {
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return (ComEventSinksContainer)data;
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}
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ComEventSinksContainer comEventSinks = new ComEventSinksContainer();
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if (!Marshal.SetComObjectData(rcw, _ComObjectEventSinksKey, comEventSinks)) {
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throw Error.SetComObjectDataFailed();
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}
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return comEventSinks;
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}
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}
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#region IDisposable Members
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#if CLR2
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[SecurityCritical, SecurityTreatAsSafe]
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#else
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[SecuritySafeCritical]
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#endif
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public void Dispose() {
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DisposeAll();
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GC.SuppressFinalize(this);
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}
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#endregion
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[SecurityCritical]
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private void DisposeAll() {
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foreach (ComEventSink sink in this) {
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sink.Dispose();
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}
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}
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#if CLR2
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[SecurityCritical, SecurityTreatAsSafe]
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#else
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[SecuritySafeCritical]
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#endif
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~ComEventSinksContainer() {
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DisposeAll();
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}
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}
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}
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#endif
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