private static int GetLogBackupFileHandle(string filename)
{
int i;
if (!LogBackupFilenameLookup.TryGetValue(filename, out i))
{
i = Interlocked.Increment(ref _logBackupFilenameLookupCounter);
LogBackupFilenameLookup[filename] = i;
LogBackupFileHandleLookup[i] = filename;
}
return(i);
}
private static void RemoveFromLogBackupLookup(string filename)
{
//** remove from backup streams list
var fs = BackupStreams[filename];
if (fs != null)
{
fs.Dispose();
BackupStreams.Remove(filename);
}
//** remove from backup filename lookup list
int i;
if (LogBackupFilenameLookup.TryGetValue(filename, out i))
{
LogBackupFileHandleLookup.Remove(i);
LogBackupFilenameLookup.Remove(filename);
}
}