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flotsam cache: reduce number of calls to File.SetLastAccessTime, (if that option is enabled )

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This commit is contained in:
UbitUmarov
2021-07-04 03:13:43 +01:00
parent 2c9f299687
commit 2b6a8698c1
1 changed files with 24 additions and 2 deletions
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26
OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
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@@ -115,6 +115,8 @@ namespace OpenSim.Region.CoreModules.Asset
private readonly object weakAssetReferencesLock = new object();
private bool m_updateFileTimeOnCacheHit = false;
private static ExpiringKey<string> m_lastFileAccessTimeChange = null;
public FlotsamAssetCache()
{
List<char> invalidChars = new List<char>();
@@ -183,6 +185,9 @@ namespace OpenSim.Region.CoreModules.Asset
m_CacheWarnAt = assetConfig.GetInt("CacheWarnAt", m_CacheWarnAt);
}
if(m_updateFileTimeOnCacheHit)
m_lastFileAccessTimeChange = new ExpiringKey<string>(300000);
if(m_MemoryCacheEnabled)
m_MemoryCache = new ExpiringCacheOS<string, AssetBase>((int)m_MemoryExpiration * 500);
@@ -430,11 +435,12 @@ namespace OpenSim.Region.CoreModules.Asset
/// </summary>
/// <param name="filename">Filename.</param>
/// <returns><c>true</c>, if the update was successful, false otherwise.</returns>
private static bool UpdateFileLastAccessTime(string filename)
private static bool CheckUpdateFileLastAccessTime(string filename)
{
try
{
File.SetLastAccessTime(filename, DateTime.Now);
m_lastFileAccessTimeChange.Add(filename, 900000);
return true;
}
catch (FileNotFoundException)
@@ -447,6 +453,21 @@ namespace OpenSim.Region.CoreModules.Asset
}
}
private static void UpdateFileLastAccessTime(string filename)
{
try
{
if(!m_lastFileAccessTimeChange.ContainsKey(filename))
{
File.SetLastAccessTime(filename, DateTime.Now);
m_lastFileAccessTimeChange.Add(filename, 900000);
}
}
catch
{
}
}
private AssetBase GetFromWeakReference(string id)
{
AssetBase asset = null;
@@ -974,6 +995,7 @@ namespace OpenSim.Region.CoreModules.Asset
bformatter.Serialize(stream, asset);
stream.Flush();
}
m_lastFileAccessTimeChange.Add(filename, 900000);
}
catch (IOException e)
{
@@ -1096,7 +1118,7 @@ namespace OpenSim.Region.CoreModules.Asset
break;
string idstr = id.ToString();
if (!UpdateFileLastAccessTime(GetFileName(idstr)) && tryGetUncached)
if (tryGetUncached && !CheckUpdateFileLastAccessTime(GetFileName(idstr)))
{
cooldown += 5;
m_AssetService.Get(idstr);