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mantis 8438: work around null ref

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UbitUmarov
2019-01-01 13:16:35 +00:00
parent 02492f7b15
commit 9c043fe414
1 changed files with 26 additions and 27 deletions
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53
OpenSim/Region/Framework/Scenes/SceneGraph.cs
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@@ -69,7 +69,7 @@ namespace OpenSim.Region.Framework.Scenes
#region Fields
protected System.Threading.ReaderWriterLockSlim m_scenePresencesLock = new System.Threading.ReaderWriterLockSlim();
protected System.Threading.ReaderWriterLockSlim m_scenePresencesLock;
protected ConcurrentDictionary<UUID, ScenePresence> m_scenePresenceMap = new ConcurrentDictionary<UUID, ScenePresence>();
protected ConcurrentDictionary<uint, ScenePresence> m_scenePresenceLocalIDMap = new ConcurrentDictionary<uint, ScenePresence>();
@@ -119,6 +119,7 @@ namespace OpenSim.Region.Framework.Scenes
protected internal SceneGraph(Scene parent)
{
m_scenePresencesLock = new System.Threading.ReaderWriterLockSlim();
m_parentScene = parent;
}
@@ -153,6 +154,9 @@ namespace OpenSim.Region.Framework.Scenes
m_scenePresenceMap = new ConcurrentDictionary<UUID, ScenePresence>();
m_scenePresenceLocalIDMap = new ConcurrentDictionary<uint, ScenePresence>();
m_scenePresenceArray = new List<ScenePresence>();
if (_PhyScene != null)
_PhyScene.OnPhysicsCrash -= physicsBasedCrash;
_PhyScene = null;
}
finally
{
@@ -168,6 +172,7 @@ namespace OpenSim.Region.Framework.Scenes
Entities.Clear();
m_scenePresencesLock.Dispose();
m_scenePresencesLock = null;
}
#region Update Methods
@@ -695,10 +700,13 @@ namespace OpenSim.Region.Framework.Scenes
ScenePresence presence = new ScenePresence(client, m_parentScene, appearance, type);
Entities[presence.UUID] = presence;
bool entered = false;
m_scenePresencesLock.EnterWriteLock();
try
{
m_scenePresencesLock.EnterWriteLock();
entered = true;
m_numChildAgents++;
List<ScenePresence> newlist = new List<ScenePresence>(m_scenePresenceArray);
@@ -731,7 +739,8 @@ namespace OpenSim.Region.Framework.Scenes
}
finally
{
m_scenePresencesLock.ExitWriteLock();
if(entered)
m_scenePresencesLock.ExitWriteLock();
}
return presence;
@@ -749,9 +758,11 @@ namespace OpenSim.Region.Framework.Scenes
agentID);
}
m_scenePresencesLock.EnterWriteLock();
bool entered = false;
try
{
m_scenePresencesLock.EnterWriteLock();
entered = true;
// Remove the presence reference from the dictionary
ScenePresence oldref;
if(m_scenePresenceMap.TryRemove(agentID, out oldref))
@@ -769,7 +780,8 @@ namespace OpenSim.Region.Framework.Scenes
}
finally
{
m_scenePresencesLock.ExitWriteLock();
if(entered)
m_scenePresencesLock.ExitWriteLock();
}
}
@@ -896,15 +908,21 @@ namespace OpenSim.Region.Framework.Scenes
/// <returns></returns>
protected internal List<ScenePresence> GetScenePresences()
{
m_scenePresencesLock.EnterReadLock();
bool entered = false;
try
{
m_scenePresencesLock.EnterReadLock();
entered = true;
return m_scenePresenceArray;
}
catch
{
return new List<ScenePresence>();
}
finally
{
m_scenePresencesLock.ExitReadLock();
if(entered)
m_scenePresencesLock.ExitReadLock();
}
}
@@ -1207,8 +1225,6 @@ namespace OpenSim.Region.Framework.Scenes
{
foreach (SceneObjectPart p in ((SceneObjectGroup)entity).Parts)
{
// m_log.DebugFormat("[SCENE GRAPH]: Part {0} has name {1}", p.UUID, p.Name);
if (p.Name == name)
{
sop = p;
@@ -1312,23 +1328,6 @@ namespace OpenSim.Region.Framework.Scenes
/// <param name="action"></param>
public void ForEachScenePresence(Action<ScenePresence> action)
{
// Once all callers have their delegates configured for parallelism, we can unleash this
/*
Action<ScenePresence> protectedAction = new Action<ScenePresence>(delegate(ScenePresence sp)
{
try
{
action(sp);
}
catch (Exception e)
{
m_log.Info("[SCENEGRAPH]: Error in " + m_parentScene.RegionInfo.RegionName + ": " + e.ToString());
m_log.Info("[SCENEGRAPH]: Stack Trace: " + e.StackTrace);
}
});
Parallel.ForEach<ScenePresence>(GetScenePresences(), protectedAction);
*/
// For now, perform actions serially
List<ScenePresence> presences = GetScenePresences();
foreach (ScenePresence sp in presences)
{