/// <exception cref="System.IO.IOException"></exception>
public override Ref Peel(Ref @ref)
{
Ref leaf = @ref.GetLeaf();
if (leaf.IsPeeled() || leaf.GetObjectId() == null)
{
return(@ref);
}
ObjectIdRef newLeaf = DoPeel(leaf);
// Try to remember this peeling in the cache, so we don't have to do
// it again in the future, but only if the reference is unchanged.
if (leaf.GetStorage().IsLoose())
{
RefList <RefDirectory.LooseRef> curList = looseRefs.Get();
int idx = curList.Find(leaf.GetName());
if (0 <= idx && curList.Get(idx) == leaf)
{
RefDirectory.LooseRef asPeeled = ((RefDirectory.LooseRef)leaf).Peel(newLeaf);
RefList <RefDirectory.LooseRef> newList = curList.Set(idx, asPeeled);
looseRefs.CompareAndSet(curList, newList);
}
}
return(Recreate(@ref, newLeaf));
}
/// <exception cref="System.IO.IOException"></exception>
private Ref ReadRef(string name, RefList <Ref> packed)
{
RefList <RefDirectory.LooseRef> curList = looseRefs.Get();
int idx = curList.Find(name);
if (0 <= idx)
{
RefDirectory.LooseRef o = curList.Get(idx);
RefDirectory.LooseRef n = ScanRef(o, name);
if (n == null)
{
if (looseRefs.CompareAndSet(curList, curList.Remove(idx)))
{
modCnt.IncrementAndGet();
}
return(packed.Get(name));
}
if (o == n)
{
return(n);
}
if (looseRefs.CompareAndSet(curList, curList.Set(idx, n)))
{
modCnt.IncrementAndGet();
}
return(n);
}
RefDirectory.LooseRef n_1 = ScanRef(null, name);
if (n_1 == null)
{
return(packed.Get(name));
}
// check whether the found new ref is the an additional ref. These refs
// should not go into looseRefs
for (int i = 0; i < additionalRefsNames.Length; i++)
{
if (name.Equals(additionalRefsNames[i]))
{
return(n_1);
}
}
if (looseRefs.CompareAndSet(curList, curList.Add(idx, n_1)))
{
modCnt.IncrementAndGet();
}
return(n_1);
}