Module cache_object 

Cache object representation plus disk-backed serialization helpers used by the pack decoder to bound memory while still serving delta reconstruction quickly.

Structs

ArcWrapper

Implementing encapsulation of Arc to enable third-party Trait HeapSize implementation for the Arc type Because of use Arc in LruCache, the LruCache is not clear whether a pointer will drop the referenced content when it is ejected from the cache, the actual memory usage is not accurate

CacheObject

Represents a cached object in memory, which may be a delta or a base object.

Traits

ArcWrapperBounds

trait alias for simple use

FileLoadStore

file load&store trait

MemSizeRecorder

Heap-size recorder for a class(struct)
You should use a static Var to record mem-size and record mem-size after construction & minus it in drop()
So, variable-size fields in object should NOT be modified to keep heap-size stable.
Or, you can record the initial mem-size in this object
Or, update it (not impl)