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2 Commits

Author SHA1 Message Date
Christian Ebner 04350b4c08 tools: add access method to LruCache 
This will return a mutable reference just like get_mut, but on a cache miss
it will get and insert the missing value via the fetch method provided via the
Cacher trait.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
 2020-01-24 09:32:09 +01:00
Christian Ebner 1685c2e341 tools: LRU cache to use for pxar FUSE implementation. 
Implements a cache with least recently used cache replacement policy.
Internally the state is tracked by a HashMap (for fast access) and a doubly
linked list (for the access order).

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
 2020-01-22 13:11:42 +01:00