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avoid a mulithread dictionary values change issue

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This commit is contained in:
UbitUmarov
2022-03-10 14:10:53 +00:00
parent 2637656176
commit 5ffa1801d8
2 changed files with 19 additions and 11 deletions
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26
OpenSim/Framework/ExpiringCacheOS.cs
View File

@@ -41,6 +41,7 @@ namespace OpenSim.Framework
private ReaderWriterLockSlim m_rwLock;
private readonly Dictionary<TKey1, int> m_expireControl;
private readonly Dictionary<TKey1, TValue1> m_values;
TValue1[] valuesArrayCache = null;
private readonly double m_startTS;
private readonly int m_expire;
@@ -142,6 +143,7 @@ namespace OpenSim.Framework
gotWriteLock = true;
}
valuesArrayCache = null;
foreach (TKey1 key in expired)
{
m_expireControl.Remove(key);
@@ -190,6 +192,7 @@ namespace OpenSim.Framework
m_expireControl[key] = now;
m_values[key] = val;
valuesArrayCache = null;
CheckTimer();
}
finally
@@ -234,6 +237,7 @@ namespace OpenSim.Framework
m_expireControl[key] = now;
m_values[key] = val;
valuesArrayCache = null;
CheckTimer();
}
finally
@@ -258,7 +262,9 @@ namespace OpenSim.Framework
}
success = m_expireControl.Remove(key);
success |= m_values.Remove(key);
if(m_expireControl.Count == 0)
if(success)
valuesArrayCache = null;
if (m_expireControl.Count == 0)
DisposeTimer();
}
finally
@@ -285,6 +291,7 @@ namespace OpenSim.Framework
DisposeTimer();
m_expireControl.Clear();
m_values.Clear();
valuesArrayCache = null;
}
finally
{
@@ -381,9 +388,7 @@ namespace OpenSim.Framework
public bool TryGetValue(TKey1 key, out TValue1 value)
{
bool success;
bool gotLock = false;
try
{
try {}
@@ -393,15 +398,13 @@ namespace OpenSim.Framework
gotLock = true;
}
success = m_values.TryGetValue(key, out value);
return m_values.TryGetValue(key, out value);
}
finally
{
if (gotLock)
m_rwLock.ExitReadLock();
}
return success;
}
public bool TryGetValue(TKey1 key, int expireMS, out TValue1 value)
@@ -457,7 +460,7 @@ namespace OpenSim.Framework
return success;
}
public ICollection<TValue1> Values
public TValue1[] Values
{
get
{
@@ -470,7 +473,12 @@ namespace OpenSim.Framework
m_rwLock.EnterUpgradeableReadLock();
gotLock = true;
}
return m_values.Values;
if(valuesArrayCache == null)
{
valuesArrayCache = new TValue1[m_values.Count];
m_values.Values.CopyTo(valuesArrayCache, 0);
}
return valuesArrayCache;
}
finally
{
@@ -480,6 +488,7 @@ namespace OpenSim.Framework
}
}
/*
public ICollection<TKey1> Keys
{
get
@@ -502,5 +511,6 @@ namespace OpenSim.Framework
}
}
}
*/
}
}

4
OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs
View File

@@ -1237,9 +1237,7 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
cdt.AddColumn("HomeURL", 40);
cdt.AddColumn("Checked", 10);
ICollection<UserData> copy = m_userCacheByID.Values;
foreach(UserData u in copy)
foreach(UserData u in m_userCacheByID.Values)
{
cdt.AddRow(u.Id, string.Format("{0} {1}", u.FirstName, u.LastName), u.HomeURL, u.HasGridUserTried ? "yes" : "no");
}