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Really bad idea to lock m_UserCache for so long in UserManagementModule. Added a special lock object instead, if we really want to avoid concurrent executions of that code.

cpu-performance
Diva Canto 2013-06-11 15:36:27 -07:00
parent 57141e34bf
commit b33db917f5
1 changed files with 17 additions and 13 deletions
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6
OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs
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@ -56,6 +56,7 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
// The cache
protected Dictionary<UUID, UserData> m_UserCache = new Dictionary<UUID, UserData>();
private object m_AddUserLock = new object();
#region ISharedRegionModule
@ -475,9 +476,11 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
UserData oldUser;
//lock the whole block - prevent concurrent update
lock (m_UserCache)
lock (m_AddUserLock)
{
lock (m_UserCache)
m_UserCache.TryGetValue(id, out oldUser);
if (oldUser != null)
{
if (creatorData == null || creatorData == String.Empty)
@ -490,6 +493,7 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
//and creator's home URL's
if ((oldUser.FirstName == "Unknown" && !creatorData.Contains("Unknown")) || (oldUser.HomeURL != null && !creatorData.StartsWith(oldUser.HomeURL)))
{
lock (m_UserCache)
m_UserCache.Remove(id);
m_log.DebugFormat("[USER MANAGEMENT MODULE]: Re-adding user with id {0}, creatorData [{1}] and old HomeURL {2}", id, creatorData, oldUser.HomeURL);
}