// Cache_Free
//
// Frees the memory and removes it from the LRU list
private void Free(CacheUser c)
{
if (c.data == null)
{
Utilities.Error("Cache_Free: not allocated");
}
var entry = ( CacheEntry )c;
entry.Remove( );
}
// Cache_Check
/// <summary>
/// Cache_Check
/// Returns value of c.data if still cached or null
/// </summary>
public Object Check(CacheUser c)
{
var cs = ( CacheEntry )c;
if (cs == null || cs.data == null)
{
return(null);
}
// move to head of LRU
cs.RemoveFromLRU( );
cs.LRUInstertAfter(Head);
return(cs.data);
}