/// <summary>
/// Instantiates the ReadQueueManager
/// </summary>
/// <param name="myWriteQueueLock">hold all position which are currently not written from WriteQueueManager</param>
public ReadQueueManager(WriteQueueLock myWriteQueueLock)
{
_WriteQueueLock = myWriteQueueLock;
GraphFSFileStream = null;
ShutdownReaderThread = false;
_ReadQueue = new List<QueueEntry>();
_ReaderThread = new Thread(new ThreadStart(ReadQueueThread));
_ReaderThread.Name = "ReadQueueManager.ReadQueueThread()";
_ReaderThread.Priority = ThreadPriority.Highest;
_ReaderThread.Start();
}
/// <summary>
/// Instantiates the ReadQueueManager and attaches the given FileStream
/// </summary>
/// <param name="myInputFileStream">the FileStream for reading and writing</param>
/// <param name="myWriteQueueLock">hold all position which are currently not written from WriteQueueManager</param>
public ReadQueueManager(FileStream myInputFileStream, WriteQueueLock myWriteQueueLock)
: this(myWriteQueueLock)
{
SetFileStream(myInputFileStream);
}
/// <summary>
/// Instantiates the WriteQueueManager and attaches the given FileStream
/// </summary>
/// <param name="myInputFileStream">the FileStream for reading and writing</param>
/// <param name="myWriteQueueLock">hold all position which are currently not written from WriteQueueManager</param>
public WriteQueueManager(FileStream myInputFileStream, WriteQueueLock myWriteQueueLock)
: this(myWriteQueueLock)
{
// First do the normal stuff!
SetFileStream(myInputFileStream);
}
public override Boolean AttachStorage(String myStorageLocation)
{
lock (this)
{
if (_FileStream == null)
{
_StorageLocation = myStorageLocation;
var _ImageFileLocation = GetImageFileLocation(myStorageLocation);
_WriteQueueLock = new WriteQueueLock();
_FileStream = new FileStream(_ImageFileLocation, FileMode.Open);
_ReadQueue = new ReadQueueManager(_WriteQueueLock);
_WriteQueue = new WriteQueueManager(_WriteQueueLock);
_ReadQueue.SetFileStream(_FileStream);
_WriteQueue.SetFileStream(_FileStream);
// Configure the ByteCache
if (_ByteCacheSettings == null)
_ByteCacheSettings = new CacheSettings()
{
TimerDueTime = TimeSpan.FromSeconds(3),
TimerPeriod = TimeSpan.FromSeconds(120),
AbsoluteExpirationTimeSpan = TimeSpan.FromSeconds(120),
ExpirationType = ExpirationTypes.Absolute
};
_ByteCache = new ByteCache("<FileStorage> " + _StorageLocation, _ByteCacheSettings);
_WriteQueue.NotificationDispatcher = _NotificationDispatcher;
_WriteQueue.OnFlushSucceeded += new FlushSucceededHandler(WriteQueue_OnFlushSucceeded);
return true;
}
return false;
}
}