109 lines
2.4 KiB
C#
109 lines
2.4 KiB
C#
// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2004 Novell, Inc.
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//
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// Authors:
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// Jackson Harper (jackson@ximian.com)
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using System;
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using System.Threading;
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namespace System.Windows.Forms {
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internal class AsyncMethodResult : IAsyncResult {
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private ManualResetEvent handle;
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private object state;
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private bool completed;
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private object return_value;
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private Exception exception;
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public AsyncMethodResult ()
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{
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handle = new ManualResetEvent (false);
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}
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public virtual WaitHandle AsyncWaitHandle {
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get {
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lock (this) {
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return handle;
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}
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}
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}
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public object AsyncState {
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get { return state; }
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set { state = value; }
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}
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public bool CompletedSynchronously {
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get { return false; }
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}
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public bool IsCompleted {
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get {
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lock (this) {
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return completed;
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}
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}
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}
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public object EndInvoke ()
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{
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lock (this) {
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if (completed) {
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if (exception == null)
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return return_value;
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else
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throw exception;
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}
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}
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handle.WaitOne ();
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if (exception != null)
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throw exception;
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return return_value;
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}
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public void Complete (object result)
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{
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lock (this) {
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completed = true;
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return_value = result;
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handle.Set ();
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}
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}
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public void CompleteWithException (Exception ex)
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{
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lock (this) {
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completed = true;
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exception = ex;
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handle.Set ();
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}
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}
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}
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}
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