private static void OnClear(AssetRefHelper helper)
{
foreach (var assetRef in helper.refList.ToArray())
{
OnUnRef(helper, assetRef);
}
}
private static void OnUnRef(AssetRefHelper helper, AssetRef assetRef)
{
if (assetRefDict.TryGetValue(assetRef, out var set))
{
set.Remove(helper.gameObject);
}
}
private static void OnRef(AssetRefHelper helper, AssetRef assetRef)
{
if (assetRefDict.TryGetValue(assetRef, out var set))
{
set.Add(helper.gameObject);
}
else
{
set = new HashSet <GameObject>();
set.Add(helper.gameObject);
assetRefDict[assetRef] = set;
}
}
//抓取信息，一帧调用一次即可
public AssetFrameInfo CaptureFrame()
{
//所有的资源
Dictionary <UnityEngine.Object, AssetInfo> assetMap = new Dictionary <UnityEngine.Object, AssetInfo>();
//依赖关系
Dictionary <UnityEngine.Object, AssetRefList> depMap = new Dictionary <UnityEngine.Object, AssetRefList>();
float cacheHitPercent = 0.0f;
foreach (var abLoader in abLoaders)
{
var lruInfo = new HashSet <string>(abLoader.GetLruInfo());
cacheHitPercent += abLoader.cacheHitPercent;
foreach (var abInfo in abLoader.GetLoadedAbs())
{
if (abInfo == null)
{
continue;
}
AssetInfo info = new AssetInfo();
info.asset = abInfo.ab;
info.assetRef = GetAssetRef(abInfo.ab);
if (info.assetRef != null)
{
info.isCacheWeak = weakRefs.Contains(info.assetRef);
info.isCacheStrong = strongRefs.Contains(info.assetRef);
info.refGameObjects = AssetRefHelper.FindGameObjects(info.assetRef);
}
info.isInLru = lruInfo.Contains(abInfo.abPath);
assetMap[info.asset] = info;
depMap[info.asset] = abInfo.deps;
}
}
//整理依赖关系，构造双向查询
foreach (var pair in assetMap)
{
var info = pair.Value;
var asset = pair.Key;
if (depMap.TryGetValue(asset, out var deps))
{
info.refs = new List <AssetInfo>();
foreach (var dep in deps.ToArray())
{
var depInfo = assetMap[dep.asset]; //必须可以取到
info.refs.Add(depInfo);
if (depInfo.refedByOthers == null)
{
depInfo.refedByOthers = new List <AssetInfo>();
}
depInfo.refedByOthers.Add(info);
}
}
}
AssetFrameInfo frameInfo = new AssetFrameInfo();
frameInfo.assetInfos = assetMap.Values.ToArray();
frameInfo.cacheHitPercent = cacheHitPercent / abLoaders.Count;
return(frameInfo);
}