120 lines
2.9 KiB
C#
120 lines
2.9 KiB
C#
//
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// System.IO/FileStreamAsyncResult.cs
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo@ximian.com)
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//
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// (c) 2004 Novell, Inc. (http://www.novell.com)
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//
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// 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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using System.Threading;
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namespace System.IO
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{
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class FileStreamAsyncResult : IAsyncResult {
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/* Same structure in the runtime */
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object state;
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bool completed;
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bool done;
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Exception exc;
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ManualResetEvent wh;
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AsyncCallback cb;
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bool completedSynch;
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#pragma warning disable 649
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public byte [] Buffer;
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public int Offset;
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public int Count;
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public int OriginalCount;
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public int BytesRead;
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#pragma warning restore 649
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AsyncCallback realcb;
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public FileStreamAsyncResult (AsyncCallback cb, object state)
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{
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this.state = state;
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this.realcb = cb;
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if (realcb != null)
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this.cb = new AsyncCallback (CBWrapper);
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wh = new ManualResetEvent (false);
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}
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static void CBWrapper (IAsyncResult ares)
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{
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FileStreamAsyncResult res = (FileStreamAsyncResult) ares;
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res.realcb.BeginInvoke (ares, null, null);
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}
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public void SetComplete (Exception e)
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{
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exc = e;
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completed = true;
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wh.Set ();
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if (cb != null)
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cb (this);
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}
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public void SetComplete (Exception e, int nbytes)
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{
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this.BytesRead = nbytes;
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SetComplete (e);
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}
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public void SetComplete (Exception e, int nbytes, bool synch)
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{
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completedSynch = synch;
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SetComplete (e, nbytes);
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}
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public object AsyncState {
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get { return state; }
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}
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public bool CompletedSynchronously {
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get { return completedSynch; }
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}
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public WaitHandle AsyncWaitHandle {
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get { return wh; }
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}
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public bool IsCompleted {
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get { return completed; }
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}
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public Exception Exception {
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get { return exc; }
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}
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public bool Done {
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get { return done; }
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set { done = value; }
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}
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}
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}
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