public T CheckOut()
{
long now = DateTime.Now.Ticks;
T obj = null;
if (Unlocked.Count > 0)
{
foreach (var keyval in Unlocked)
{
obj = keyval.Key;
if (now - keyval.Value > ExpirationTime)
{
Unlocked.Remove(obj);
Expire(obj);
obj = null;
}
else
{
if (Validate(obj))
{
Unlocked.Remove(obj);
Locked.Add(obj, now);
return(obj);
}
else
{
Unlocked.Remove(obj);
Expire(obj);
obj = null;
}
}
}
}
obj = Create();
Locked.Add(obj, now);
return(obj);
}
