1
#region Copyright notice and license
3
// Copyright 2015, Google Inc.
4
// All rights reserved.
6
// Redistribution and use in source and binary forms, with or without
7
// modification, are permitted provided that the following conditions are
10
// * Redistributions of source code must retain the above copyright
11
// notice, this list of conditions and the following disclaimer.
12
// * Redistributions in binary form must reproduce the above
13
// copyright notice, this list of conditions and the following disclaimer
14
// in the documentation and/or other materials provided with the
16
// * Neither the name of Google Inc. nor the names of its
17
// contributors may be used to endorse or promote products derived from
18
// this software without specific prior written permission.
20
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35
using System.Diagnostics;
36
using System.Runtime.CompilerServices;
37
using System.Runtime.InteropServices;
38
using System.Threading;
39
using System.Threading.Tasks;
40
using Grpc.Core.Internal;
41
using Grpc.Core.Utils;
43
namespace Grpc.Core.Internal
46
/// If error != null, there's been an error or operation has been cancelled.
48
internal delegate void AsyncCompletionDelegate<T>(T result, Exception error);
51
/// Helper for transforming AsyncCompletionDelegate into full-fledged Task.
53
internal class AsyncCompletionTaskSource<T>
55
readonly TaskCompletionSource<T> tcs = new TaskCompletionSource<T>();
56
readonly AsyncCompletionDelegate<T> completionDelegate;
58
public AsyncCompletionTaskSource()
60
completionDelegate = new AsyncCompletionDelegate<T>(HandleCompletion);
71
public AsyncCompletionDelegate<T> CompletionDelegate
75
return completionDelegate;
79
private void HandleCompletion(T value, Exception error)
86
if (error is OperationCanceledException)
91
tcs.SetException(error);
b'\\ No newline at end of file'