122 lines
2.8 KiB
C#
122 lines
2.8 KiB
C#
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// System.Net.DnsAsyncResult
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo.mono@gmail.com)
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//
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// Copyright (c) 2011 Gonzalo Paniagua Javier
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//
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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.IO;
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using System.Threading;
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using Mono.Net.Dns;
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namespace System.Net
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{
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class DnsAsyncResult : IAsyncResult
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{
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static WaitCallback internal_cb = new WaitCallback (CB);
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ManualResetEvent handle;
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bool synch;
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bool is_completed;
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AsyncCallback callback;
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object state;
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IPHostEntry entry;
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Exception exc;
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public DnsAsyncResult (AsyncCallback cb, object state)
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{
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this.callback = cb;
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this.state = state;
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}
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public void SetCompleted (bool synch, IPHostEntry entry, Exception e)
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{
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this.synch = synch;
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this.entry = entry;
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exc = e;
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lock (this) {
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if (is_completed)
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return;
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is_completed = true;
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if (handle != null)
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handle.Set ();
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}
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if (callback != null)
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ThreadPool.QueueUserWorkItem (internal_cb, this);
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}
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public void SetCompleted (bool synch, Exception e)
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{
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SetCompleted (synch, null, e);
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}
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public void SetCompleted (bool synch, IPHostEntry entry)
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{
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SetCompleted (synch, entry, null);
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}
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static void CB (object _this)
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{
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DnsAsyncResult ares = (DnsAsyncResult) _this;
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ares.callback (ares);
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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 WaitHandle AsyncWaitHandle {
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get {
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lock (this) {
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if (handle == null)
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handle = new ManualResetEvent (is_completed);
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}
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return handle;
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}
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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 IPHostEntry HostEntry {
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get { return entry; }
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}
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public bool CompletedSynchronously {
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get { return synch; }
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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 is_completed;
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}
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}
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}
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}
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}
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