/// <summary>
/// Flush all "modified" data blocks in cache onto Disk.
/// NOTE: cache fault event will also cause modified data blocks
/// to be saved to disk and Save will only save those "modified ones"
/// that didn't get evicted from cache during said event.
/// </summary>
public virtual void Flush()
{
bool saveIt = false;
bool saveDelayed = DelaySaveBlocks;
if (IsOpen && IsDirty)
{
//RegisterChange();
IsDirty = false;
if (FileStream != null)
{
//** save the collection Item(s) in cache
SaveState |= SaveTypes.CollectionSave;
if (!DelaySaveBlocks)
{
DelaySaveBlocks = MruManager.Count < 20;
}
MruManager.Flush();
SaveState ^= SaveTypes.CollectionSave;
//** save the collection's meta data
WriteToDisk(this, !IsPartOfCollection);
saveIt = true;
AddToBlocks(DiskBuffer, Blocks);
}
}
if (deletedBlocks != null)
{
deletedBlocks.Flush();
}
if (!saveIt)
{
return;
}
DelaySaveBlocks = saveDelayed;
SaveBlocks(false);
}