public FuserFileHandler GetFileHandler(string filename, ref FuserDefinition.FUSER_FILE_INFO rawHFile)
{
FuserFileHandler ret = null;
if (rawHFile.Context != 0)
{
int index = (int)rawHFile.Context; // TODO: remove casting
lock (this.handlers) {
if (index > 0 && index <= this.ListHandlerMaxID)
{
PVCStoredHandle sh = this.handlers[index];
if (sh != null)
{
ret = CreateFileHandler(filename, sh.FileHandle, rawHFile);
}
}
}
}
if (ret == null)
{
ret = RegisterFileHandler(filename, ref rawHFile);
}
return(ret);
}
public FuserFileHandler RegisterFileHandler(string filename, ref FuserDefinition.FUSER_FILE_INFO rawHFile)
{
FileHandler fh = new FileHandler(filename);
lock (this.handlers) {
//int n = this.handlers.Count + 1;
bool InsertNewItem = true;
if (this.reserve.Count > 0 && this.reserve.Count >= LIMIT_MIN_COUNT_RESERVE)
{
// try to take an item from the reserve list.
PVCStoredHandle sh = this.reserve.Peek();
if (sh == null)
{
System.Diagnostics.Debugger.Break();
}
if (sh.CheckReInsert())
{
sh = this.reserve.Dequeue();
int index = sh.GetHandleID;
if (this.handlers[index] != null)
{
return(null);
}
this.handlers[index] = new PVCStoredHandle(index, fh);
if (this.handlers[index].GetHandleID != index)
{
return(null);
}
rawHFile.Context = (ulong)index; // TODO: remove casting
InsertNewItem = false;
}
}
if (InsertNewItem)
{
ListHandlerMaxID++;
this.handlers.Add(new PVCStoredHandle(ListHandlerMaxID, fh));
if (this.handlers[ListHandlerMaxID].GetHandleID != ListHandlerMaxID)
{
return(null);
}
rawHFile.Context = (ulong)ListHandlerMaxID; // TODO: remove casting
}
}
return(CreateFileHandler(filename, fh, rawHFile));
}
public void RemoveFileHandler(ref FuserDefinition.FUSER_FILE_INFO rawHFile)
{
if (rawHFile.Context != 0)
{
int index = (int)rawHFile.Context; // TODO: remove casting
lock (this.handlers) {
rawHFile.Context = 0; // immediately removes the reference
if (index > 0 && index <= this.ListHandlerMaxID)
{
PVCStoredHandle sh = this.handlers[index];
this.handlers[index] = null; // Removes saved handles
if (sh != null)
{
sh.Close();
this.reserve.Enqueue(sh);
}
}
}
}
}
