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