80 lines
2.3 KiB
C#
80 lines
2.3 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.ServiceModel.ComIntegration
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{
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using System;
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using System.Runtime;
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using System.Runtime.InteropServices;
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using System.ServiceModel;
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class ComProxy : IDisposable
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{
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IntPtr inner;
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IDisposable ccw;
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internal static ComProxy Create(IntPtr outer, object obj, IDisposable disp)
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{
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if (outer == IntPtr.Zero)
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{
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throw Fx.AssertAndThrow("Outer cannot be null");
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}
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IntPtr inner = IntPtr.Zero;
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inner = Marshal.CreateAggregatedObject(outer, obj);
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int refCount = Marshal.AddRef(inner);
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// Workaround for the CLR ref count issue.
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if (3 == refCount)
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Marshal.Release(inner);
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Marshal.Release(inner);
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return new ComProxy(inner, disp);
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}
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internal ComProxy(IntPtr inner, IDisposable disp)
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{
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this.inner = inner;
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ccw = disp;
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}
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internal void QueryInterface(ref Guid riid, out IntPtr tearoff)
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{
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if (inner == IntPtr.Zero)
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{
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throw Fx.AssertAndThrow("Inner should not be Null at this point");
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}
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int hr = Marshal.QueryInterface(inner, ref riid, out tearoff);
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if (hr != HR.S_OK)
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{
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throw Fx.AssertAndThrow("QueryInterface should succeed");
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}
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}
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void IDisposable.Dispose()
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{
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Dispose(true);
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}
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void Dispose(bool disposing)
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{
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if (inner == IntPtr.Zero)
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{
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throw Fx.AssertAndThrow("Inner should not be Null at this point");
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}
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Marshal.Release(inner);
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if (disposing)
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{
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if (ccw != null)
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ccw.Dispose();
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}
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}
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public ComProxy Clone()
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{
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if (inner == IntPtr.Zero)
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{
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throw Fx.AssertAndThrow("Inner should not be Null at this point");
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}
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Marshal.AddRef(inner);
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return new ComProxy(inner, null);
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}
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}
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}
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