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Igor Canadi 1cf5deb8fd Introduce CacheAllocator, a custom allocator for cache blocks (#4437) 
Summary:
This is a conceptually simple change, but it touches many files to
pass the allocator through function calls.

We introduce CacheAllocator, which can be used by clients to configure
custom allocator for cache blocks. Our motivation is to hook this up
with folly's `JemallocNodumpAllocator`
(f43ce6d686/folly/experimental/JemallocNodumpAllocator.h),
but there are many other possible use cases.

Additionally, this commit cleans up memory allocation in
`util/compression.h`, making sure that all allocations are wrapped in a
unique_ptr as soon as possible.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4437

Differential Revision: D10132814

Pulled By: yiwu-arbug

fbshipit-source-id: be1343a4b69f6048df127939fea9bbc96969f564
 		2018-10-02 17:24:58 -07:00
..
cache_bench.cc comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
cache_test.cc Comment out unused variables 2018-03-05 13:13:41 -08:00
clock_cache.cc comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
clock_cache.h Change RocksDB License 2017-07-15 16:11:23 -07:00
lru_cache.cc Introduce CacheAllocator, a custom allocator for cache blocks (#4437) 2018-10-02 17:24:58 -07:00
lru_cache.h Introduce CacheAllocator, a custom allocator for cache blocks (#4437) 2018-10-02 17:24:58 -07:00
lru_cache_test.cc LRUCache midpoint insertion 2018-05-24 15:57:33 -07:00
sharded_cache.cc Introduce CacheAllocator, a custom allocator for cache blocks (#4437) 2018-10-02 17:24:58 -07:00
sharded_cache.h Introduce CacheAllocator, a custom allocator for cache blocks (#4437) 2018-10-02 17:24:58 -07:00