Yueh-Hsuan Chiang 181191a1e4 Add a counter for collecting the wait time on db mutex. ... Summary: Add a counter for collecting the wait time on db mutex. Also add MutexWrapper and CondVarWrapper for measuring wait time. Test Plan: ./db_test export ROCKSDB_TESTS=MutexWaitStats ./db_test verify stats output using db_bench make clean make release ./db_bench --statistics=1 --benchmarks=fillseq,readwhilewriting --num=10000 --threads=10 Sample output: rocksdb.db.mutex.wait.micros COUNT : 7546866 Reviewers: MarkCallaghan, rven, sdong, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D32787		2015-02-04 21:39:45 -08:00
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rocksdb	Add a counter for collecting the wait time on db mutex.	2015-02-04 21:39:45 -08:00
utilities	Fix iOS compile with -Wshorten-64-to-32	2014-11-13 14:39:30 -05:00