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Prevent race conditions when one thread removes an NPC SP before another thread has retreived it after checking whether the NPC exists.

0.7.4.1
Justin Clark-Casey (justincc) 2012-08-14 21:44:06 +01:00
parent c6efebdd8c
commit 7ec8e7e025
2 changed files with 49 additions and 38 deletions
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62
OpenSim/Region/OptionalModules/World/NPC/NPCModule.cs
View File

@ -176,16 +176,17 @@ namespace OpenSim.Region.OptionalModules.World.NPC
if (m_avatars.ContainsKey(agentID))
{
ScenePresence sp;
scene.TryGetScenePresence(agentID, out sp);
if (scene.TryGetScenePresence(agentID, out sp))
{
m_log.DebugFormat(
"[NPC MODULE]: Moving {0} to {1} in {2}, noFly {3}, landAtTarget {4}",
sp.Name, pos, scene.RegionInfo.RegionName, noFly, landAtTarget);
m_log.DebugFormat(
"[NPC MODULE]: Moving {0} to {1} in {2}, noFly {3}, landAtTarget {4}",
sp.Name, pos, scene.RegionInfo.RegionName, noFly, landAtTarget);
sp.MoveToTarget(pos, noFly, landAtTarget);
sp.SetAlwaysRun = running;
return true;
sp.MoveToTarget(pos, noFly, landAtTarget);
sp.SetAlwaysRun = running;
return true;
}
}
}
@ -199,12 +200,13 @@ namespace OpenSim.Region.OptionalModules.World.NPC
if (m_avatars.ContainsKey(agentID))
{
ScenePresence sp;
scene.TryGetScenePresence(agentID, out sp);
if (scene.TryGetScenePresence(agentID, out sp))
{
sp.Velocity = Vector3.Zero;
sp.ResetMoveToTarget();
sp.Velocity = Vector3.Zero;
sp.ResetMoveToTarget();
return true;
return true;
}
}
}
@ -222,9 +224,6 @@ namespace OpenSim.Region.OptionalModules.World.NPC
{
if (m_avatars.ContainsKey(agentID))
{
ScenePresence sp;
scene.TryGetScenePresence(agentID, out sp);
m_avatars[agentID].Say(channel, text);
return true;
@ -240,9 +239,6 @@ namespace OpenSim.Region.OptionalModules.World.NPC
{
if (m_avatars.ContainsKey(agentID))
{
ScenePresence sp;
scene.TryGetScenePresence(agentID, out sp);
m_avatars[agentID].Shout(channel, text);
return true;
@ -259,11 +255,13 @@ namespace OpenSim.Region.OptionalModules.World.NPC
if (m_avatars.ContainsKey(agentID))
{
ScenePresence sp;
scene.TryGetScenePresence(agentID, out sp);
sp.HandleAgentRequestSit(m_avatars[agentID], agentID, partID, Vector3.Zero);
// sp.HandleAgentSit(m_avatars[agentID], agentID);
return true;
if (scene.TryGetScenePresence(agentID, out sp))
{
sp.HandleAgentRequestSit(m_avatars[agentID], agentID, partID, Vector3.Zero);
// sp.HandleAgentSit(m_avatars[agentID], agentID);
return true;
}
}
}
@ -276,9 +274,6 @@ namespace OpenSim.Region.OptionalModules.World.NPC
{
if (m_avatars.ContainsKey(agentID))
{
ScenePresence sp;
scene.TryGetScenePresence(agentID, out sp);
m_avatars[agentID].Whisper(channel, text);
return true;
@ -295,10 +290,12 @@ namespace OpenSim.Region.OptionalModules.World.NPC
if (m_avatars.ContainsKey(agentID))
{
ScenePresence sp;
scene.TryGetScenePresence(agentID, out sp);
sp.StandUp();
if (scene.TryGetScenePresence(agentID, out sp))
{
sp.StandUp();
return true;
return true;
}
}
}
@ -311,6 +308,7 @@ namespace OpenSim.Region.OptionalModules.World.NPC
{
if (m_avatars.ContainsKey(agentID))
return m_avatars[agentID].Touch(objectID);
return false;
}
}
@ -321,9 +319,7 @@ namespace OpenSim.Region.OptionalModules.World.NPC
{
NPCAvatar av;
if (m_avatars.TryGetValue(agentID, out av))
{
return av.OwnerID;
}
}
return UUID.Zero;

25
OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
View File

@ -2434,8 +2434,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
if (!npcModule.CheckPermissions(npcId, m_host.OwnerID))
return new LSL_Vector(0, 0, 0);
Vector3 pos = World.GetScenePresence(npcId).AbsolutePosition;
return new LSL_Vector(pos.X, pos.Y, pos.Z);
ScenePresence sp = World.GetScenePresence(npcId);
if (sp != null)
{
Vector3 pos = sp.AbsolutePosition;
return new LSL_Vector(pos.X, pos.Y, pos.Z);
}
}
return new LSL_Vector(0, 0, 0);
@ -2503,9 +2508,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
return new LSL_Rotation(Quaternion.Identity.X, Quaternion.Identity.Y, Quaternion.Identity.Z, Quaternion.Identity.W);
ScenePresence sp = World.GetScenePresence(npcId);
Quaternion rot = sp.Rotation;
return new LSL_Rotation(rot.X, rot.Y, rot.Z, rot.W);
if (sp != null)
{
Quaternion rot = sp.Rotation;
return new LSL_Rotation(rot.X, rot.Y, rot.Z, rot.W);
}
}
return new LSL_Rotation(Quaternion.Identity.X, Quaternion.Identity.Y, Quaternion.Identity.Z, Quaternion.Identity.W);
@ -2527,7 +2535,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
return;
ScenePresence sp = World.GetScenePresence(npcId);
sp.Rotation = LSL_Api.Rot2Quaternion(rotation);
if (sp != null)
sp.Rotation = LSL_Api.Rot2Quaternion(rotation);
}
}
@ -2689,6 +2699,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
{
CheckThreatLevel(ThreatLevel.High, "osNpcTouch");
m_host.AddScriptLPS(1);
INPCModule module = World.RequestModuleInterface<INPCModule>();
int linkNum = link_num.value;
if (module != null || (linkNum < 0 && linkNum != ScriptBaseClass.LINK_THIS))
@ -2696,12 +2707,15 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
UUID npcId;
if (!UUID.TryParse(npcLSL_Key, out npcId) || !module.CheckPermissions(npcId, m_host.OwnerID))
return;
SceneObjectPart part = null;
UUID objectId;
if (UUID.TryParse(LSL_String.ToString(object_key), out objectId))
part = World.GetSceneObjectPart(objectId);
if (part == null)
return;
if (linkNum != ScriptBaseClass.LINK_THIS)
{
if (linkNum == 0 || linkNum == ScriptBaseClass.LINK_ROOT)
@ -2716,6 +2730,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
return;
}
}
module.Touch(npcId, part.UUID);
}
}