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

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Maysam Yabandeh c292dc8540 WritePrepared: reduce prepared_mutex_ overhead (#5420) ... Summary: The patch reduces the contention over prepared_mutex_ using these techniques: 1) Move ::RemovePrepared() to be called from the commit callback when we have two write queues. 2) Use two separate mutex for PreparedHeap, one prepared_mutex_ needed for ::RemovePrepared, and one ::push_pop_mutex() needed for ::AddPrepared(). Given that we call ::AddPrepared only from the first write queue and ::RemovePrepared mostly from the 2nd, this will result into each the two write queues not competing with each other over a single mutex. ::RemovePrepared might occasionally need to acquire ::push_pop_mutex() if ::erase() ends up with calling ::pop() 3) Acquire ::push_pop_mutex() on the first callback of the write queue and release it on the last. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5420 Differential Revision: D15741985 Pulled By: maysamyabandeh fbshipit-source-id: 84ce8016007e88bb6e10da5760ba1f0d26347735		6 years ago
..
optimistic_transaction.cc	Organizing rocksdb/db directory	6 years ago
optimistic_transaction.h	Extend Transaction::GetForUpdate with do_validate (#4680)	6 years ago
optimistic_transaction_db_impl.cc	Organizing rocksdb/db directory	6 years ago
optimistic_transaction_db_impl.h	Make Optimistic Tx database stackable	7 years ago
optimistic_transaction_test.cc	Move some logging related files to logging/ (#5387)	6 years ago
pessimistic_transaction.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago
pessimistic_transaction.h	WritePrepared: snapshot should be larger than max_evicted_seq_ (#4886)	6 years ago
pessimistic_transaction_db.cc	simplify include directive involving inttypes (#5402)	6 years ago
pessimistic_transaction_db.h	WritePrepared: skip_concurrency_control option (#5330)	6 years ago
snapshot_checker.cc	WriteUnPrepared: less virtual in iterator callback (#5049)	6 years ago
transaction_base.cc	simplify include directive involving inttypes (#5402)	6 years ago
transaction_base.h	Extend MultiGet batching to Transactions (#5210)	6 years ago
transaction_db_mutex_impl.cc	Apply modernize-use-override (2nd iteration)	6 years ago
transaction_db_mutex_impl.h	Change RocksDB License	7 years ago
transaction_lock_mgr.cc	simplify include directive involving inttypes (#5402)	6 years ago
transaction_lock_mgr.h	Improve transaction lock details (#5193)	6 years ago
transaction_test.cc	simplify include directive involving inttypes (#5402)	6 years ago
transaction_test.h	simplify include directive involving inttypes (#5402)	6 years ago
transaction_util.cc	simplify include directive involving inttypes (#5402)	6 years ago
transaction_util.h	WritePrepared: fix ValidateSnapshot with long-running txn (#4961)	6 years ago
write_prepared_transaction_test.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago
write_prepared_txn.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago
write_prepared_txn.h	WriteUnPrepared: less virtual in iterator callback (#5049)	6 years ago
write_prepared_txn_db.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago
write_prepared_txn_db.h	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago
write_unprepared_transaction_test.cc	simplify include directive involving inttypes (#5402)	6 years ago
write_unprepared_txn.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago
write_unprepared_txn.h	WritePrepared: fix race condition in reading batch with duplicate keys (#5147)	6 years ago
write_unprepared_txn_db.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago
write_unprepared_txn_db.h	WritePrepared: reduce prepared_mutex_ overhead (#5420)	6 years ago