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

Andrew Kryczka fe395fb63d Allow incrementing refcount on cache handles ... Summary: Previously the only way to increment a handle's refcount was to invoke Lookup(), which (1) did hash table lookup to get cache handle, (2) incremented that handle's refcount. For a future DeleteRange optimization, I added a function, Ref(), for when the caller already has a cache handle and only needs to do (2). Closes https://github.com/facebook/rocksdb/pull/1761 Differential Revision: D4397114 Pulled By: ajkr fbshipit-source-id: 9addbe5		8 years ago
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sim_cache.cc	Allow incrementing refcount on cache handles	8 years ago
sim_cache_test.cc	add sim_cache stats to Statistics	9 years ago