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Numerous packet improvements.

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Don't allow packets to be resent before they have actually been sent for the
first time. Switch from serializing a packet to get it's length to the LibOMV
provided Length property. Fix resend timing. Fix the use of dangling references
to Acked packets. Fix the packet handler to play nice with the packet pool.
Fix the packet pool. Add data block recycling to the packet pool. Packet pool
is now ENABLED by default. Add config option to disable packet and data block
reuse. Add ObjectUpdate and ImprovedTerseObjectUpdate to the packets being
recycled.
This commit is contained in:
Melanie Thielker
2009-05-02 13:16:41 +00:00
parent 8c97214741
commit 62bcf0e694
7 changed files with 108 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
OpenSim/Region/ClientStack/LindenUDP/LLPacketHandler.cs
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@@ -253,7 +253,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
item.TickCount = Environment.TickCount;
item.Identifier = id;
item.Resends = 0;
item.Length = packet.ToBytes().Length;
item.Length = packet.Length;
item.Sequence = packet.Header.Sequence;
m_PacketQueue.Enqueue(item);
m_PacketsSent++;
@@ -310,7 +311,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// Packets this old get resent
//
if ((now - data.TickCount) > m_ResendTimeout)
if ((now - data.TickCount) > m_ResendTimeout && data.Sequence != 0)
{
if (resent < 20)
{
@@ -325,6 +326,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
m_NeedAck.Remove(packet.Header.Sequence);
TriggerOnPacketDrop(packet, data.Identifier);
m_PacketQueue.Cancel(packet.Header.Sequence);
PacketPool.Instance.ReturnPacket(packet);
continue;
}
@@ -586,11 +588,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
return;
m_NeedAck.Remove(id);
// We can't return this packet, it will just have to be GC'd
// Reason for that is that the packet may still be in the
// send queue, and if it gets reused things get messy!
//
// PacketPool.Instance.ReturnPacket(data.Packet);
m_PacketQueue.Cancel(data.Sequence);
PacketPool.Instance.ReturnPacket(data.Packet);
m_UnackedBytes -= data.Length;
}
}
@@ -680,7 +679,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
item.TickCount = Environment.TickCount;
item.Identifier = 0;
item.Resends = 0;
item.Length = packet.ToBytes().Length;
item.Length = packet.Length;
item.Sequence = packet.Header.Sequence;
m_NeedAck.Add(key, item);
}
@@ -719,6 +719,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (data.Identifier != null && data.Identifier == id)
{
m_NeedAck.Remove(data.Packet.Header.Sequence);
m_PacketQueue.Cancel(data.Sequence);
PacketPool.Instance.ReturnPacket(data.Packet);
return;
}
@@ -745,6 +746,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (packet.Header.Sequence == 0)
{
packet.Header.Sequence = NextPacketSequenceNumber();
item.Sequence = packet.Header.Sequence;
item.TickCount = Environment.TickCount;
lock (m_NeedAck)
{
@@ -793,7 +796,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// Dont't return in that case
//
if (!packet.Header.Reliable)
{
m_PacketQueue.Cancel(item.Sequence);
PacketPool.Instance.ReturnPacket(packet);
}
}
private void Abort()