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

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Peter Dillinger ca7ccbe2ea Misc hashing updates / upgrades (#5909) ... Summary: - Updated our included xxhash implementation to version 0.7.2 (== the latest dev version as of 2019-10-09). - Using XXH_NAMESPACE (like other fb projects) to avoid potential name collisions. - Added fastrange64, and unit tests for it and fastrange32. These are faster alternatives to hash % range. - Use preview version of XXH3 instead of MurmurHash64A for NPHash64 -- Had to update cache_test to increase probability of passing for any given hash function. - Use fastrange64 instead of % with uses of NPHash64 -- Had to fix WritePreparedTransactionTest.CommitOfDelayedPrepared to avoid deadlock apparently caused by new hash collision. - Set default seed for NPHash64 because specifying a seed rarely makes sense for it. - Removed unnecessary include xxhash.h in a popular .h file - Rename preview version of XXH3 to XXH3p for clarity and to ease backward compatibility in case final version of XXH3 is integrated. Relying on existing unit tests for NPHash64-related changes. Each new implementation of fastrange64 passed unit tests when manipulating my local build to select it. I haven't done any integration performance tests, but I consider the improved performance of the pieces being swapped in to be well established. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5909 Differential Revision: D18125196 Pulled By: pdillinger fbshipit-source-id: f6bf83d49d20cbb2549926adf454fd035f0ecc0d		5 years ago
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optimistic_transaction.cc	Organizing rocksdb/db directory	5 years ago
optimistic_transaction.h	Use delete to disable automatic generated methods. (#5009)	5 years ago
optimistic_transaction_db_impl.cc	Refactor trimming logic for immutable memtables (#5022)	5 years ago
optimistic_transaction_db_impl.h	Make Optimistic Tx database stackable	6 years ago
optimistic_transaction_test.cc	Apply formatter to recent 200+ commits. (#5830)	5 years ago
pessimistic_transaction.cc	save a few redundant container lookups (#5875)	5 years ago
pessimistic_transaction.h	Use delete to disable automatic generated methods. (#5009)	5 years ago
pessimistic_transaction_db.cc	replace some reinterpret_cast with static_cast_with_check (#5740)	5 years ago
pessimistic_transaction_db.h	WritePrepared: skip_concurrency_control option (#5330)	5 years ago
snapshot_checker.cc	WriteUnPrepared: less virtual in iterator callback (#5049)	5 years ago
transaction_base.cc	save a few redundant container lookups (#5875)	5 years ago
transaction_base.h	WriteUnPrepared: savepoint support (#5627)	5 years ago
transaction_db_mutex_impl.cc	Apply modernize-use-override (2nd iteration)	5 years ago
transaction_db_mutex_impl.h	Change RocksDB License	7 years ago
transaction_lock_mgr.cc	Misc hashing updates / upgrades (#5909)	5 years ago
transaction_lock_mgr.h	Use delete to disable automatic generated methods. (#5009)	5 years ago
transaction_test.cc	upgrade gtest 1.7.0 => 1.8.1 for json result writing	5 years ago
transaction_test.h	Apply formatter to recent 200+ commits. (#5830)	5 years ago
transaction_util.cc	use c++17's try_emplace if available (#5696)	5 years ago
transaction_util.h	Fix PopSavePoint to merge info into the previous savepoint (#5628)	5 years ago
write_prepared_transaction_test.cc	Misc hashing updates / upgrades (#5909)	5 years ago
write_prepared_txn.cc	New API to get all merge operands for a Key (#5604)	5 years ago
write_prepared_txn.h	Use delete to disable automatic generated methods. (#5009)	5 years ago
write_prepared_txn_db.cc	Apply formatter to recent 200+ commits. (#5830)	5 years ago
write_prepared_txn_db.h	Apply formatter to recent 200+ commits. (#5830)	5 years ago
write_unprepared_transaction_test.cc	WriteUnPrepared: Split ReadYourOwnWriteStress to three (#5776)	5 years ago
write_unprepared_txn.cc	Apply formatter to recent 200+ commits. (#5830)	5 years ago
write_unprepared_txn.h	WriteUnPrepared: support iterating while writing to transaction (#5699)	5 years ago
write_unprepared_txn_db.cc	Apply formatter to recent 200+ commits. (#5830)	5 years ago
write_unprepared_txn_db.h	WriteUnPrepared: use tracked_keys_ to track keys needed for rollback (#5562)	5 years ago