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Put in locks on m_killRecord to replace changed locks on m_entityUpdates.SyncRoot 

These locks are necessary to avoid a delete/update race condition for scene objects.
However, since we're now locking on m_killRecord this shouldn't cause delays to m_entityUpdates reprioritization
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Justin Clark-Casey (justincc) 2010-12-15 23:11:42 +00:00
parent ed26376ec5
commit 0745d65344
1 changed files with 203 additions and 196 deletions
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11
OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
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@ -327,7 +327,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
/// thread servicing the m_primFullUpdates queue after a kill. If this happens the object persists as an /// thread servicing the m_primFullUpdates queue after a kill. If this happens the object persists as an
/// ownerless phantom. /// ownerless phantom.
/// ///
/// All manipulation of this set has to occur under an m_entityUpdates.SyncRoot lock /// All manipulation of this set has to occur under a lock
/// ///
/// </value> /// </value>
protected HashSet<uint> m_killRecord; protected HashSet<uint> m_killRecord;
@ -1521,7 +1521,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (m_scene.GetScenePresence(localID) == null) if (m_scene.GetScenePresence(localID) == null)
{ {
lock (m_entityUpdates.SyncRoot) // We must lock for both manipulating the kill record and sending the packet, in order to avoid a race
// condition where a kill can be processed before an out-of-date update for the same object.
lock (m_killRecord)
{ {
m_killRecord.Add(localID); m_killRecord.Add(localID);
@ -3558,6 +3560,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (maxUpdates <= 0) maxUpdates = Int32.MaxValue; if (maxUpdates <= 0) maxUpdates = Int32.MaxValue;
int updatesThisCall = 0; int updatesThisCall = 0;
// We must lock for both manipulating the kill record and sending the packet, in order to avoid a race
// condition where a kill can be processed before an out-of-date update for the same object.
lock (m_killRecord)
{
EntityUpdate update; EntityUpdate update;
while (updatesThisCall < maxUpdates) while (updatesThisCall < maxUpdates)
{ {
@ -3774,6 +3780,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
OutPacket(packet, ThrottleOutPacketType.Task, true); OutPacket(packet, ThrottleOutPacketType.Task, true);
} }
}
#endregion Packet Sending #endregion Packet Sending
} }