blob: eb742aa446d19aaf4c3bde4727284ba6a7898d20 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
using System.Reactive.Concurrency;
using System.Threading;
namespace System.Reactive.Disposables
{
/// <summary>
/// Represents a disposable resource whose disposal invocation will be scheduled on the specified <seealso cref="T:System.Reactive.Concurrency.IScheduler"/>.
/// </summary>
public sealed class ScheduledDisposable : ICancelable
{
private readonly IScheduler _scheduler;
private volatile IDisposable _disposable;
/// <summary>
/// Initializes a new instance of the <see cref="T:System.Reactive.Disposables.ScheduledDisposable"/> class that uses an <see cref="T:System.Reactive.Concurrency.IScheduler"/> on which to dispose the disposable.
/// </summary>
/// <param name="scheduler">Scheduler where the disposable resource will be disposed on.</param>
/// <param name="disposable">Disposable resource to dispose on the given scheduler.</param>
/// <exception cref="ArgumentNullException"><paramref name="scheduler"/> or <paramref name="disposable"/> is null.</exception>
public ScheduledDisposable(IScheduler scheduler, IDisposable disposable)
{
if (scheduler == null)
throw new ArgumentNullException("scheduler");
if (disposable == null)
throw new ArgumentNullException("disposable");
_scheduler = scheduler;
_disposable = disposable;
}
/// <summary>
/// Gets the scheduler where the disposable resource will be disposed on.
/// </summary>
public IScheduler Scheduler
{
get { return _scheduler; }
}
/// <summary>
/// Gets the underlying disposable. After disposal, the result is undefined.
/// </summary>
public IDisposable Disposable
{
get
{
var current = _disposable;
if (current == BooleanDisposable.True)
return DefaultDisposable.Instance; // Don't leak the sentinel value.
return current;
}
}
/// <summary>
/// Gets a value that indicates whether the object is disposed.
/// </summary>
public bool IsDisposed
{
get { return _disposable == BooleanDisposable.True; }
}
/// <summary>
/// Disposes the wrapped disposable on the provided scheduler.
/// </summary>
public void Dispose()
{
Scheduler.Schedule(DisposeInner);
}
private void DisposeInner()
{
#pragma warning disable 0420
var disposable = Interlocked.Exchange(ref _disposable, BooleanDisposable.True);
#pragma warning restore 0420
if (disposable != BooleanDisposable.True)
{
disposable.Dispose();
}
}
}
}
|
