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/*
* 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 OpenSim.Framework;
using OpenMetaverse;
using ReaderWriterLockImpl = OpenMetaverse.ReaderWriterLockSlim;
namespace OpenSim.Region.ClientStack.LindenUDP
{
public sealed class UDPClientCollection
{
Dictionary<UUID, LLUDPClient> Dictionary1;
Dictionary<IPEndPoint, LLUDPClient> Dictionary2;
LLUDPClient[] Array;
ReaderWriterLockImpl rwLock = new ReaderWriterLockImpl();
object m_sync = new object();
public UDPClientCollection()
{
Dictionary1 = new Dictionary<UUID, LLUDPClient>();
Dictionary2 = new Dictionary<IPEndPoint, LLUDPClient>();
Array = new LLUDPClient[0];
}
public UDPClientCollection(int capacity)
{
Dictionary1 = new Dictionary<UUID, LLUDPClient>(capacity);
Dictionary2 = new Dictionary<IPEndPoint, LLUDPClient>(capacity);
Array = new LLUDPClient[0];
}
public void Add(UUID key1, IPEndPoint key2, LLUDPClient value)
{
//rwLock.EnterWriteLock();
//try
//{
// if (Dictionary1.ContainsKey(key1))
// {
// if (!Dictionary2.ContainsKey(key2))
// throw new ArgumentException("key1 exists in the dictionary but not key2");
// }
// else if (Dictionary2.ContainsKey(key2))
// {
// if (!Dictionary1.ContainsKey(key1))
// throw new ArgumentException("key2 exists in the dictionary but not key1");
// }
// Dictionary1[key1] = value;
// Dictionary2[key2] = value;
// LLUDPClient[] oldArray = Array;
// int oldLength = oldArray.Length;
// LLUDPClient[] newArray = new LLUDPClient[oldLength + 1];
// for (int i = 0; i < oldLength; i++)
// newArray[i] = oldArray[i];
// newArray[oldLength] = value;
// Array = newArray;
//}
//finally { rwLock.ExitWriteLock(); }
lock (m_sync)
{
if (Dictionary1.ContainsKey(key1))
{
if (!Dictionary2.ContainsKey(key2))
throw new ArgumentException("key1 exists in the dictionary but not key2");
}
else if (Dictionary2.ContainsKey(key2))
{
if (!Dictionary1.ContainsKey(key1))
throw new ArgumentException("key2 exists in the dictionary but not key1");
}
Dictionary1[key1] = value;
Dictionary2[key2] = value;
LLUDPClient[] oldArray = Array;
int oldLength = oldArray.Length;
LLUDPClient[] newArray = new LLUDPClient[oldLength + 1];
for (int i = 0; i < oldLength; i++)
newArray[i] = oldArray[i];
newArray[oldLength] = value;
Array = newArray;
}
}
public bool Remove(UUID key1, IPEndPoint key2)
{
//rwLock.EnterWriteLock();
//try
//{
// LLUDPClient value;
// if (Dictionary1.TryGetValue(key1, out value))
// {
// Dictionary1.Remove(key1);
// Dictionary2.Remove(key2);
// LLUDPClient[] oldArray = Array;
// int oldLength = oldArray.Length;
// LLUDPClient[] newArray = new LLUDPClient[oldLength - 1];
// int j = 0;
// for (int i = 0; i < oldLength; i++)
// {
// if (oldArray[i] != value)
// newArray[j++] = oldArray[i];
// }
// Array = newArray;
// return true;
// }
//}
//finally { rwLock.ExitWriteLock(); }
//return false;
lock (m_sync)
{
LLUDPClient value;
if (Dictionary1.TryGetValue(key1, out value))
{
Dictionary1.Remove(key1);
Dictionary2.Remove(key2);
LLUDPClient[] oldArray = Array;
int oldLength = oldArray.Length;
LLUDPClient[] newArray = new LLUDPClient[oldLength - 1];
int j = 0;
for (int i = 0; i < oldLength; i++)
{
if (oldArray[i] != value)
newArray[j++] = oldArray[i];
}
Array = newArray;
return true;
}
}
return false;
}
public void Clear()
{
//rwLock.EnterWriteLock();
//try
//{
// Dictionary1.Clear();
// Dictionary2.Clear();
// Array = new LLUDPClient[0];
//}
//finally { rwLock.ExitWriteLock(); }
lock (m_sync)
{
Dictionary1.Clear();
Dictionary2.Clear();
Array = new LLUDPClient[0];
}
}
public int Count
{
get { return Array.Length; }
}
public bool ContainsKey(UUID key)
{
return Dictionary1.ContainsKey(key);
}
public bool ContainsKey(IPEndPoint key)
{
return Dictionary2.ContainsKey(key);
}
public bool TryGetValue(UUID key, out LLUDPClient value)
{
//bool success;
//bool doLock = !rwLock.IsUpgradeableReadLockHeld;
//if (doLock) rwLock.EnterReadLock();
//try { success = Dictionary1.TryGetValue(key, out value); }
//finally { if (doLock) rwLock.ExitReadLock(); }
//return success;
lock (m_sync)
return Dictionary1.TryGetValue(key, out value);
}
public bool TryGetValue(IPEndPoint key, out LLUDPClient value)
{
//bool success;
//bool doLock = !rwLock.IsUpgradeableReadLockHeld;
//if (doLock) rwLock.EnterReadLock();
//try { success = Dictionary2.TryGetValue(key, out value); }
//finally { if (doLock) rwLock.ExitReadLock(); }
//return success;
lock (m_sync)
return Dictionary2.TryGetValue(key, out value);
}
public void ForEach(Action<LLUDPClient> action)
{
//bool doLock = !rwLock.IsUpgradeableReadLockHeld;
//if (doLock) rwLock.EnterUpgradeableReadLock();
//try { Parallel.ForEach<LLUDPClient>(Array, action); }
//finally { if (doLock) rwLock.ExitUpgradeableReadLock(); }
lock (m_sync)
Parallel.ForEach<LLUDPClient>(Array, action);
}
}
}
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