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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Net;
using OpenMetaverse;
namespace OpenSim.Framework
{
/// <summary>
/// Maps from client AgentID and RemoteEndPoint values to IClientAPI
/// references for all of the connected clients
/// </summary>
public class ClientManager
{
/// <summary>A dictionary mapping from <seealso cref="UUID"/>
/// to <seealso cref="IClientAPI"/> references</summary>
private Dictionary<UUID, IClientAPI> m_dict1;
/// <summary>A dictionary mapping from <seealso cref="IPEndPoint"/>
/// to <seealso cref="IClientAPI"/> references</summary>
private Dictionary<IPEndPoint, IClientAPI> m_dict2;
/// <summary>An immutable collection of <seealso cref="IClientAPI"/>
/// references</summary>
private IClientAPI[] m_array;
/// <summary>Synchronization object for writing to the collections</summary>
private object m_syncRoot = new object();
/// <summary>Number of clients in the collection</summary>
public int Count
{
get
{
lock (m_syncRoot)
return m_dict1.Count;
}
}
/// <summary>
/// Default constructor
/// </summary>
public ClientManager()
{
m_dict1 = new Dictionary<UUID, IClientAPI>();
m_dict2 = new Dictionary<IPEndPoint, IClientAPI>();
m_array = null;
}
/// <summary>
/// Add a client reference to the collection if it does not already
/// exist
/// </summary>
/// <param name="value">Reference to the client object</param>
/// <returns>True if the client reference was successfully added,
/// otherwise false if the given key already existed in the collection</returns>
public bool Add(IClientAPI value)
{
lock (m_syncRoot)
{
m_dict1[value.AgentId] = value;
m_dict2[value.RemoteEndPoint] = value;
m_array = null;
}
return true;
}
/// <summary>
/// Remove a client from the collection
/// </summary>
/// <param name="key">UUID of the client to remove</param>
/// <returns>True if a client was removed, or false if the given UUID
/// was not present in the collection</returns>
public bool Remove(UUID key)
{
lock (m_syncRoot)
{
IClientAPI value;
if (m_dict1.TryGetValue(key, out value))
{
m_dict1.Remove(key);
m_dict2.Remove(value.RemoteEndPoint);
m_array = null;
return true;
}
}
return false;
}
/// <summary>
/// Resets the client collection
/// </summary>
public void Clear()
{
lock (m_syncRoot)
{
m_dict1.Clear();
m_dict2.Clear();
m_array = null;
}
}
/// <summary>
/// Checks if a UUID is in the collection
/// </summary>
/// <param name="key">UUID to check for</param>
/// <returns>True if the UUID was found in the collection, otherwise false</returns>
public bool ContainsKey(UUID key)
{
lock (m_syncRoot)
return m_dict1.ContainsKey(key);
}
/// <summary>
/// Checks if an endpoint is in the collection
/// </summary>
/// <param name="key">Endpoint to check for</param>
/// <returns>True if the endpoint was found in the collection, otherwise false</returns>
public bool ContainsKey(IPEndPoint key)
{
lock (m_syncRoot)
return m_dict2.ContainsKey(key);
}
/// <summary>
/// Attempts to fetch a value out of the collection
/// </summary>
/// <param name="key">UUID of the client to retrieve</param>
/// <param name="value">Retrieved client, or null on lookup failure</param>
/// <returns>True if the lookup succeeded, otherwise false</returns>
public bool TryGetValue(UUID key, out IClientAPI value)
{
try
{
lock (m_syncRoot)
return m_dict1.TryGetValue(key, out value);
}
catch
{
value = null;
return false;
}
}
/// <summary>
/// Attempts to fetch a value out of the collection
/// </summary>
/// <param name="key">Endpoint of the client to retrieve</param>
/// <param name="value">Retrieved client, or null on lookup failure</param>
/// <returns>True if the lookup succeeded, otherwise false</returns>
public bool TryGetValue(IPEndPoint key, out IClientAPI value)
{
try
{
lock (m_syncRoot)
return m_dict2.TryGetValue(key, out value);
}
catch
{
value = null;
return false;
}
}
/// <summary>
/// Performs a given task synchronously for each of the elements in
/// the collection
/// </summary>
/// <param name="action">Action to perform on each element</param>
public void ForEach(Action<IClientAPI> action)
{
IClientAPI[] localArray;
lock (m_syncRoot)
{
if (m_array == null)
{
if (m_dict1.Count == 0)
return;
m_array = new IClientAPI[m_dict1.Count];
m_dict1.Values.CopyTo(m_array, 0);
}
localArray = m_array;
}
for (int i = 0; i < localArray.Length; i++)
action(localArray[i]);
}
}
}
|
