public MmfObjectPtr Insert(MmfObjectPtr info, byte[] item)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (info == null)
{
throw new ArgumentNullException("item");
}
if (!info.View.IsOpen)
{
_viewManager.OpenView(info.View);
}
// Check if this item can be accomodated in existing space.
if (info.Arena.HasDataSpace((uint)item.Length))
{
info.Arena.SetMemContents(item);
}
else
{
// Try to add it elsewhere and then delete the current space.
MmfObjectPtr newInfo = Add(item);
//if (newInfo != null)
//{
//Remove(info); //as we are updating original hash table links, so before call remove we must update the hash-table entry, instead of updating later.
//I am moving this remove call to MmfStorageProvide 'Insert' methods ....
//}
info = newInfo;
}
return(info);
}
/// <summary>
/// Gets the object from the memory mapped file.
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
public byte[] Get(MmfObjectPtr info)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (!info.View.IsOpen)
{
_viewManager.OpenView(info.View);
}
byte[] item = info.Arena.GetMemContents();
info.View.Usage++;
return(item);
}
public byte[] Remove(MmfObjectPtr info)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (!info.View.IsOpen)
{
_viewManager.OpenView(info.View);
}
byte[] item = info.Arena.GetMemContents();
// Reclaim space for current item.
info.View.DeAllocate(info.Arena);
return(item);
}