Manuel Ung ef0fc1b461 Reduce copies of LockInfo (#5172)
Summary:
The LockInfo struct is not easy to copy because it contains std::vector. Reduce copies by using move constructor and `unordered_map::emplace`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5172

Differential Revision: D14882053

Pulled By: lth

fbshipit-source-id: 93999ec6ab1a5841fb5115abb764b6c1831a6de1
2019-04-10 15:58:58 -07:00
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