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
|
//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System.Diagnostics;
using System.Net.Sockets;
using System.Runtime;
class SocketAsyncEventArgsPool : QueuedObjectPool<SocketAsyncEventArgs>
{
const int SingleBatchSize = 128 * 1024;
const int MaxBatchCount = 16;
const int MaxFreeCountFactor = 4;
int acceptBufferSize;
public SocketAsyncEventArgsPool(int acceptBufferSize)
{
if (acceptBufferSize <= 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("acceptBufferSize"));
}
this.acceptBufferSize = acceptBufferSize;
int batchCount = (SingleBatchSize + acceptBufferSize - 1) / acceptBufferSize;
if (batchCount > MaxBatchCount)
{
batchCount = MaxBatchCount;
}
Initialize(batchCount, batchCount * MaxFreeCountFactor);
}
public override bool Return(SocketAsyncEventArgs socketAsyncEventArgs)
{
CleanupAcceptSocket(socketAsyncEventArgs);
if (!base.Return(socketAsyncEventArgs))
{
this.CleanupItem(socketAsyncEventArgs);
return false;
}
return true;
}
internal static void CleanupAcceptSocket(SocketAsyncEventArgs socketAsyncEventArgs)
{
Fx.Assert(socketAsyncEventArgs != null, "socketAsyncEventArgs should not be null.");
Socket socket = socketAsyncEventArgs.AcceptSocket;
if (socket != null)
{
socketAsyncEventArgs.AcceptSocket = null;
try
{
socket.Close(0);
}
catch (SocketException ex)
{
FxTrace.Exception.TraceHandledException(ex, TraceEventType.Information);
}
catch (ObjectDisposedException ex)
{
FxTrace.Exception.TraceHandledException(ex, TraceEventType.Information);
}
}
}
protected override void CleanupItem(SocketAsyncEventArgs item)
{
item.Dispose();
}
protected override SocketAsyncEventArgs Create()
{
SocketAsyncEventArgs eventArgs = new SocketAsyncEventArgs();
byte[] acceptBuffer = DiagnosticUtility.Utility.AllocateByteArray(this.acceptBufferSize);
eventArgs.SetBuffer(acceptBuffer, 0, this.acceptBufferSize);
return eventArgs;
}
}
}
|
