fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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krad 1f0142ce19 Persistent Read Cache (Part 2) Data structure for building persistent read cache index ... Summary: We expect the persistent read cache to perform at speeds upto 8 GB/s. In order to accomplish that, we need build a index mechanism which operate in the order of multiple millions per sec rate. This patch provide the basic data structure to accomplish that: (1) Hash table implementation with lock contention spread It is based on the StripedHashSet<T> implementation in The Art of multiprocessor programming by Maurice Henry & Nir Shavit (2) LRU implementation Place holder algorithm for further optimizing (3) Evictable Hash Table implementation Building block for building index data structure that evicts data like files etc TODO: (1) Figure if the sharded hash table and LRU can be used instead (2) Figure if we need to support configurable eviction algorithm for EvictableHashTable Test Plan: Run unit tests Subscribers: andrewkr, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D55785		8 years ago
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hash_table.h	Persistent Read Cache (Part 2) Data structure for building persistent read cache index	8 years ago
hash_table_bench.cc	Persistent Read Cache (Part 2) Data structure for building persistent read cache index	8 years ago
hash_table_evictable.h	Persistent Read Cache (Part 2) Data structure for building persistent read cache index	8 years ago
hash_table_test.cc	Persistent Read Cache (Part 2) Data structure for building persistent read cache index	8 years ago
lrulist.h	Persistent Read Cache (Part 2) Data structure for building persistent read cache index	8 years ago