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bc7a1dc1fb
With trx_sys_t::rw_trx_ids removal, MVCC snapshot overhead became slightly higher. That is instead of copying an array we now have to iterate LF_HASH. All this done under trx_sys.mutex protection. This patch moves MVCC snapshot out of trx_sys.mutex. Clean-ups: Removed MVCC: doesn't make too much sense to keep it in a separate class anymore. Refactored ReadView so that it now calls register()/deregister() routines (it was vice versa before). ReadView doesn't have friends anymore. :( Even less trx_sys.mutex references. |
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| archive | ||
| blackhole | ||
| cassandra | ||
| connect | ||
| csv | ||
| example | ||
| federated | ||
| federatedx | ||
| heap | ||
| innobase | ||
| maria | ||
| mroonga | ||
| myisam | ||
| myisammrg | ||
| oqgraph | ||
| perfschema | ||
| rocksdb | ||
| sequence | ||
| sphinx | ||
| spider | ||
| test_sql_discovery | ||
| tokudb | ||