public void UnloadUnusedBundles(int tag)
{
if (m_AssetBundles.Count == 0)
{
return;
}
AssetBundleReference abr = null;
Stack <string> checkQueue = StackPool <string> .Get();
HashSet <string> checkings = HashSetPool <string> .Get();
Action <string> checkFun = (key) =>
{
abr = m_AssetBundles[key];
checkings.Remove(key);
if (abr.isUnused())
{
//check dependencies
if (abr.dependencies != null && abr.dependencies.Count > 0)
{
foreach (AssetBundleReference sub in abr.dependencies)
{
//只有同样tag和空tag的ref才需要重新检查。
if (sub.isCache && (sub.tagCount == 0 || sub.HaveTag(tag)) && !checkings.Contains(sub.name))
{
checkQueue.Push(sub.name);
}
}
}
abr.Dispose();
m_AssetBundles.Remove(key);
}
};
foreach (string key in m_AssetBundles.Keys)
{
abr = m_AssetBundles[key];
if (abr.HaveTag(tag) && abr.isCache)
{
checkQueue.Push(key);
checkings.Add(key);
}
}
//recheck unused asset bundle
while (checkQueue.Count > 0)
{
checkFun(checkQueue.Pop());
}
StackPool <string> .Release(checkQueue);
HashSetPool <string> .Release(checkings);
}
void ReleaseDependencies()
{
var iter = m_Dependencies.GetEnumerator();
while (iter.MoveNext())
{
iter.Current.Release();
}
HashSetPool <AssetBundleReference> .Release(m_Dependencies);
m_Dependencies = null;
}
public virtual void Dispose(bool disposing, bool forceRemoveAll)
{
if (!m_Disposed)
{
if (disposing)
{
ListPool <WeakReference> .Release(m_Owners);
m_Owners = null;
HashSetPool <int> .Release(m_Tags);
}
m_Disposed = true;
}
}