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Chain.cs
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Chain.cs
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// Copyright 2017 Tim Oster. All rights reserved.
// Use of this source code is governed by the MIT license.
// More information can be found in the LICENSE file.
namespace rmnp
{
class Chain
{
internal class Link
{
public Link next;
public Packet packet;
internal Link(Link next, Packet packet)
{
this.next = next;
this.packet = packet;
}
}
private byte next;
private Link start;
private byte length;
private byte maxLength;
private readonly object mutex = new object();
internal Chain(byte maxLength)
{
this.maxLength = maxLength;
}
internal void Reset()
{
lock (this.mutex)
{
this.next = 0;
this.start = null;
this.length = 0;
this.maxLength = 0;
}
}
internal void ChainPacket(Packet packet)
{
lock (this.mutex)
{
if (this.start == null)
{
this.start = new Link(null, packet);
}
else
{
Link link = null;
for (Link l = this.start; l != null; l = l.next)
{
if (Util.GreaterThanOrder(packet.Order, l.packet.Order)) link = l;
else break;
}
if (link == null) this.start = new Link(this.start, packet);
else link.next = new Link(link.next, packet);
}
if (this.length >= this.maxLength)
{
this.start = this.start.next;
this.length--;
}
this.length++;
}
}
internal Link PopConsecutive()
{
lock (this.mutex)
{
Link last = null;
for (Link l = this.start; l != null; l = l.next)
{
if (l.packet.Order == this.next)
{
this.length--;
this.next++;
last = l;
}
else
{
break;
}
}
if (last != null)
{
Link start = this.start;
this.start = last.next;
last.next = null;
return start;
}
return null;
}
}
internal void Skip()
{
lock (this.mutex)
{
if (this.start != null)
{
this.next = this.start.packet.Order;
}
}
}
}
}