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Allow the thread watchdog to accept an alarm method that is invoked if the timeout is breached.

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This alarm can then invoke this to log extra information.
This is used in LLUDPServer to show which client was being processed when incoming and outgoing udp watchdog alarms are triggered.
This commit is contained in:
Justin Clark-Casey (justincc)
2012-06-07 02:44:13 +01:00
parent 514dd85199
commit 98b46d48fe
4 changed files with 96 additions and 25 deletions
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69
OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
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@@ -163,6 +163,16 @@ namespace OpenSim.Region.ClientStack.LindenUDP
private int m_malformedCount = 0; // Guard against a spamming attack
/// <summary>
/// Record current outgoing client for monitoring purposes.
/// </summary>
private IClientAPI m_currentOutgoingClient;
/// <summary>
/// Recording current incoming client for monitoring purposes.
/// </summary>
private IClientAPI m_currentIncomingClient;
public LLUDPServer(IPAddress listenIP, ref uint port, int proxyPortOffsetParm, bool allow_alternate_port, IConfigSource configSource, AgentCircuitManager circuitManager)
: base(listenIP, (int)port)
{
@@ -244,19 +254,56 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (m_scene == null)
throw new InvalidOperationException("[LLUDPSERVER]: Cannot LLUDPServer.Start() without an IScene reference");
m_log.Info("[LLUDPSERVER]: Starting the LLUDP server in " + (m_asyncPacketHandling ? "asynchronous" : "synchronous") + " mode");
m_log.InfoFormat(
"[LLUDPSERVER]: Starting the LLUDP server in {0} mode",
m_asyncPacketHandling ? "asynchronous" : "synchronous");
base.Start(m_recvBufferSize, m_asyncPacketHandling);
// Start the packet processing threads
Watchdog.StartThread(
IncomingPacketHandler, "Incoming Packets (" + m_scene.RegionInfo.RegionName + ")", ThreadPriority.Normal, false, true);
IncomingPacketHandler,
string.Format("Incoming Packets ({0})", m_scene.RegionInfo.RegionName),
ThreadPriority.Normal,
false,
true,
GetWatchdogIncomingAlarmData,
Watchdog.WATCHDOG_TIMEOUT_MS);
Watchdog.StartThread(
OutgoingPacketHandler, "Outgoing Packets (" + m_scene.RegionInfo.RegionName + ")", ThreadPriority.Normal, false, true);
OutgoingPacketHandler,
string.Format("Outgoing Packets ({0})", m_scene.RegionInfo.RegionName),
ThreadPriority.Normal,
false,
true,
GetWatchdogOutgoingAlarmData,
Watchdog.WATCHDOG_TIMEOUT_MS);
m_elapsedMSSinceLastStatReport = Environment.TickCount;
}
/// <summary>
/// If the outgoing UDP thread times out, then return client that was being processed to help with debugging.
/// </summary>
/// <returns></returns>
private string GetWatchdogIncomingAlarmData()
{
return string.Format(
"Client is {0}",
m_currentIncomingClient != null ? m_currentIncomingClient.Name : "none");
}
/// <summary>
/// If the outgoing UDP thread times out, then return client that was being processed to help with debugging.
/// </summary>
/// <returns></returns>
private string GetWatchdogOutgoingAlarmData()
{
return string.Format(
"Client is {0}",
m_currentOutgoingClient != null ? m_currentOutgoingClient.Name : "none");
}
public new void Stop()
{
m_log.Info("[LLUDPSERVER]: Shutting down the LLUDP server for " + m_scene.RegionInfo.RegionName);
@@ -1173,6 +1220,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// client. m_packetSent will be set to true if a packet is sent
m_scene.ForEachClient(clientPacketHandler);
m_currentOutgoingClient = null;
// If nothing was sent, sleep for the minimum amount of time before a
// token bucket could get more tokens
if (!m_packetSent)
@@ -1191,6 +1240,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
private void ClientOutgoingPacketHandler(IClientAPI client)
{
m_currentOutgoingClient = client;
try
{
if (client is LLClientView)
@@ -1216,8 +1267,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
}
catch (Exception ex)
{
m_log.Error("[LLUDPSERVER]: OutgoingPacketHandler iteration for " + client.Name +
" threw an exception: " + ex.Message, ex);
m_log.Error(
string.Format("[LLUDPSERVER]: OutgoingPacketHandler iteration for {0} threw ", client.Name), ex);
}
}
@@ -1243,6 +1294,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
nticks++;
watch1.Start();
m_currentOutgoingClient = client;
try
{
if (client is LLClientView)
@@ -1344,6 +1397,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// Make sure this client is still alive
if (m_scene.TryGetClient(udpClient.AgentID, out client))
{
m_currentIncomingClient = client;
try
{
// Process this packet
@@ -1361,6 +1416,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
m_log.ErrorFormat("[LLUDPSERVER]: Client packet handler for {0} for packet {1} threw an exception", udpClient.AgentID, packet.Type);
m_log.Error(e.Message, e);
}
finally
{
m_currentIncomingClient = null;
}
}
else
{