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Overview
| Comment: | Also prevent repeated calls into GetAssemblyDirectory and GetXmlConfigFileName when their respective searches are not successful. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
384b2aecc24bf1f2f46fd922fc4dced7 |
| User & Date: | mistachkin 2017-05-12 20:43:17.385 |
References
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2017-05-12
| ||
| 20:45 | Cherrypick of [384b2aecc24bf1], avoid repeated calls into GetAssemblyDirectory/GetXmlConfigFileName for null returns. check-in: 6058d5f357 user: mistachkin tags: branch-1.0.105 | |
Context
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2017-05-13
| ||
| 05:42 | Merge in applicable changes from the 1.0.105.1 release. check-in: c2adf5a112 user: mistachkin tags: trunk | |
|
2017-05-12
| ||
| 20:45 | Cherrypick of [384b2aecc24bf1], avoid repeated calls into GetAssemblyDirectory/GetXmlConfigFileName for null returns. check-in: 6058d5f357 user: mistachkin tags: branch-1.0.105 | |
| 20:43 | Also prevent repeated calls into GetAssemblyDirectory and GetXmlConfigFileName when their respective searches are not successful. check-in: 384b2aecc2 user: mistachkin tags: trunk | |
|
2017-05-11
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| 15:54 | Update version history docs. check-in: 13fa3545f6 user: mistachkin tags: trunk | |
Changes
Changes to System.Data.SQLite/UnsafeNativeMethods.cs.
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/// <see cref="GetAssemblyDirectory" /> method -OR- null if that method
/// has never returned a valid value.
/// </summary>
private static string cachedAssemblyDirectory;
/////////////////////////////////////////////////////////////////////////
/// <summary>
/// When this field is non-zero, it indicates the
/// <see cref="GetAssemblyDirectory" /> method was not able to locate a
/// suitable assembly directory. The
/// <see cref="GetCachedAssemblyDirectory" /> method will check this
/// field and skips calls into the <see cref="GetAssemblyDirectory" />
/// method whenever it is non-zero.
/// </summary>
private static bool noAssemblyDirectory;
/////////////////////////////////////////////////////////////////////////
/// <summary>
/// This is the cached return value from the
/// <see cref="GetXmlConfigFileName" /> method -OR- null if that method
/// has never returned a valid value.
/// </summary>
private static string cachedXmlConfigFileName;
/////////////////////////////////////////////////////////////////////////
/// <summary>
/// When this field is non-zero, it indicates the
/// <see cref="GetXmlConfigFileName" /> method was not able to locate a
/// suitable XML configuration file name. The
/// <see cref="GetCachedXmlConfigFileName" /> method will check this
/// field and skips calls into the <see cref="GetXmlConfigFileName" />
/// method whenever it is non-zero.
/// </summary>
private static bool noXmlConfigFileName;
#endregion
/////////////////////////////////////////////////////////////////////////
/// <summary>
/// For now, this method simply calls the Initialize method.
/// </summary>
static UnsafeNativeMethods()
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DebugData.IncrementOtherCount("Method_ResetCachedXmlConfigFileName");
#endif
#endregion
lock (staticSyncRoot)
{
cachedXmlConfigFileName = null;
noXmlConfigFileName = false;
}
}
/////////////////////////////////////////////////////////////////////////
/// <summary>
/// Queries and returns the cached XML configuration file name for the
/// assembly containing the managed System.Data.SQLite components, if
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#endif
#endregion
lock (staticSyncRoot)
{
if (cachedXmlConfigFileName != null)
return cachedXmlConfigFileName;
if (noXmlConfigFileName)
return null;
}
return GetXmlConfigFileName();
}
/////////////////////////////////////////////////////////////////////////
/// <summary>
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lock (staticSyncRoot)
{
cachedXmlConfigFileName = fileName;
}
return fileName;
}
lock (staticSyncRoot)
{
noXmlConfigFileName = true;
}
return null;
}
/////////////////////////////////////////////////////////////////////////
/// <summary>
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DebugData.IncrementOtherCount("Method_ResetCachedAssemblyDirectory");
#endif
#endregion
lock (staticSyncRoot)
{
cachedAssemblyDirectory = null;
noAssemblyDirectory = false;
}
}
/////////////////////////////////////////////////////////////////////////
/// <summary>
/// Queries and returns the cached directory for the assembly currently
/// being executed, if available. If the cached assembly directory value
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#endif
#endregion
lock (staticSyncRoot)
{
if (cachedAssemblyDirectory != null)
return cachedAssemblyDirectory;
if (noAssemblyDirectory)
return null;
}
return GetAssemblyDirectory();
}
/////////////////////////////////////////////////////////////////////////
/// <summary>
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#endregion
try
{
Assembly assembly = Assembly.GetExecutingAssembly();
if (assembly == null)
{
lock (staticSyncRoot)
{
noAssemblyDirectory = true;
}
return null;
}
string fileName = null;
#if PLATFORM_COMPACTFRAMEWORK
AssemblyName assemblyName = assembly.GetName();
if (assemblyName == null)
{
lock (staticSyncRoot)
{
noAssemblyDirectory = true;
}
return null;
}
fileName = assemblyName.CodeBase;
#else
if (!CheckAssemblyCodeBase(assembly, ref fileName))
fileName = assembly.Location;
#endif
if (String.IsNullOrEmpty(fileName))
{
lock (staticSyncRoot)
{
noAssemblyDirectory = true;
}
return null;
}
string directory = Path.GetDirectoryName(fileName);
if (String.IsNullOrEmpty(directory))
{
lock (staticSyncRoot)
{
noAssemblyDirectory = true;
}
return null;
}
lock (staticSyncRoot)
{
cachedAssemblyDirectory = directory;
}
return directory;
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}
catch
{
// do nothing.
}
#endif
}
lock (staticSyncRoot)
{
noAssemblyDirectory = true;
}
return null;
}
#endregion
/////////////////////////////////////////////////////////////////////////
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