283 lines
9.2 KiB
C#
283 lines
9.2 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Net;
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using OpenSim.Framework;
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using OpenMetaverse;
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using ReaderWriterLockImpl = OpenMetaverse.ReaderWriterLockSlim;
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namespace OpenSim.Region.ClientStack.LindenUDP
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{
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public sealed class UDPClientCollection
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{
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Dictionary<UUID, LLUDPClient> Dictionary1;
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Dictionary<IPEndPoint, LLUDPClient> Dictionary2;
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LLUDPClient[] Array;
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ReaderWriterLockImpl rwLock = new ReaderWriterLockImpl();
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object m_sync = new object();
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public UDPClientCollection()
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{
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Dictionary1 = new Dictionary<UUID, LLUDPClient>();
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Dictionary2 = new Dictionary<IPEndPoint, LLUDPClient>();
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Array = new LLUDPClient[0];
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}
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public UDPClientCollection(int capacity)
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{
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Dictionary1 = new Dictionary<UUID, LLUDPClient>(capacity);
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Dictionary2 = new Dictionary<IPEndPoint, LLUDPClient>(capacity);
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Array = new LLUDPClient[0];
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}
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public void Add(UUID key1, IPEndPoint key2, LLUDPClient value)
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{
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//rwLock.EnterWriteLock();
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//try
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//{
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// if (Dictionary1.ContainsKey(key1))
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// {
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// if (!Dictionary2.ContainsKey(key2))
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// throw new ArgumentException("key1 exists in the dictionary but not key2");
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// }
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// else if (Dictionary2.ContainsKey(key2))
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// {
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// if (!Dictionary1.ContainsKey(key1))
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// throw new ArgumentException("key2 exists in the dictionary but not key1");
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// }
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// Dictionary1[key1] = value;
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// Dictionary2[key2] = value;
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// LLUDPClient[] oldArray = Array;
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// int oldLength = oldArray.Length;
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// LLUDPClient[] newArray = new LLUDPClient[oldLength + 1];
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// for (int i = 0; i < oldLength; i++)
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// newArray[i] = oldArray[i];
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// newArray[oldLength] = value;
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// Array = newArray;
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//}
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//finally { rwLock.ExitWriteLock(); }
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lock (m_sync)
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{
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if (Dictionary1.ContainsKey(key1))
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{
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if (!Dictionary2.ContainsKey(key2))
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throw new ArgumentException("key1 exists in the dictionary but not key2");
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}
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else if (Dictionary2.ContainsKey(key2))
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{
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if (!Dictionary1.ContainsKey(key1))
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throw new ArgumentException("key2 exists in the dictionary but not key1");
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}
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Dictionary1[key1] = value;
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Dictionary2[key2] = value;
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LLUDPClient[] oldArray = Array;
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int oldLength = oldArray.Length;
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LLUDPClient[] newArray = new LLUDPClient[oldLength + 1];
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for (int i = 0; i < oldLength; i++)
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newArray[i] = oldArray[i];
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newArray[oldLength] = value;
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Array = newArray;
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}
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}
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public bool Remove(UUID key1, IPEndPoint key2)
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{
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//rwLock.EnterWriteLock();
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//try
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//{
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// LLUDPClient value;
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// if (Dictionary1.TryGetValue(key1, out value))
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// {
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// Dictionary1.Remove(key1);
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// Dictionary2.Remove(key2);
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// LLUDPClient[] oldArray = Array;
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// int oldLength = oldArray.Length;
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// LLUDPClient[] newArray = new LLUDPClient[oldLength - 1];
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// int j = 0;
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// for (int i = 0; i < oldLength; i++)
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// {
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// if (oldArray[i] != value)
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// newArray[j++] = oldArray[i];
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// }
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// Array = newArray;
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// return true;
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// }
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//}
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//finally { rwLock.ExitWriteLock(); }
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//return false;
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lock (m_sync)
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{
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LLUDPClient value;
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if (Dictionary1.TryGetValue(key1, out value))
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{
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Dictionary1.Remove(key1);
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Dictionary2.Remove(key2);
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LLUDPClient[] oldArray = Array;
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int oldLength = oldArray.Length;
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LLUDPClient[] newArray = new LLUDPClient[oldLength - 1];
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int j = 0;
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for (int i = 0; i < oldLength; i++)
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{
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if (oldArray[i] != value)
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newArray[j++] = oldArray[i];
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}
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Array = newArray;
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return true;
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}
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}
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return false;
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}
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public void Clear()
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{
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//rwLock.EnterWriteLock();
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//try
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//{
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// Dictionary1.Clear();
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// Dictionary2.Clear();
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// Array = new LLUDPClient[0];
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//}
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//finally { rwLock.ExitWriteLock(); }
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lock (m_sync)
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{
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Dictionary1.Clear();
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Dictionary2.Clear();
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Array = new LLUDPClient[0];
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}
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}
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public int Count
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{
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get { return Array.Length; }
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}
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public bool ContainsKey(UUID key)
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{
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return Dictionary1.ContainsKey(key);
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}
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public bool ContainsKey(IPEndPoint key)
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{
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return Dictionary2.ContainsKey(key);
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}
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public bool TryGetValue(UUID key, out LLUDPClient value)
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{
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////bool success;
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////bool doLock = !rwLock.IsUpgradeableReadLockHeld;
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////if (doLock) rwLock.EnterReadLock();
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////try { success = Dictionary1.TryGetValue(key, out value); }
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////finally { if (doLock) rwLock.ExitReadLock(); }
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////return success;
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lock (m_sync)
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return Dictionary1.TryGetValue(key, out value);
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//try
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//{
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// return Dictionary1.TryGetValue(key, out value);
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//}
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//catch { }
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//value = null;
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//return false;
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}
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public bool TryGetValue(IPEndPoint key, out LLUDPClient value)
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{
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////bool success;
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////bool doLock = !rwLock.IsUpgradeableReadLockHeld;
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////if (doLock) rwLock.EnterReadLock();
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////try { success = Dictionary2.TryGetValue(key, out value); }
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////finally { if (doLock) rwLock.ExitReadLock(); }
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////return success;
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lock (m_sync)
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return Dictionary2.TryGetValue(key, out value);
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//try
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//{
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// return Dictionary2.TryGetValue(key, out value);
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//}
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//catch { }
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//value = null;
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//return false;
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}
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public void ForEach(Action<LLUDPClient> action)
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{
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//bool doLock = !rwLock.IsUpgradeableReadLockHeld;
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//if (doLock) rwLock.EnterUpgradeableReadLock();
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//try { Parallel.ForEach<LLUDPClient>(Array, action); }
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//finally { if (doLock) rwLock.ExitUpgradeableReadLock(); }
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LLUDPClient[] localArray = null;
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lock (m_sync)
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{
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localArray = new LLUDPClient[Array.Length];
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Array.CopyTo(localArray, 0);
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}
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Parallel.ForEach<LLUDPClient>(localArray, action);
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}
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}
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}
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