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If the server is compiled WITH_WSREP=OFF, we should avoid evaluating conditions on a global variable that is constant. WSREP_ON_: Renamed from WSREP_ON. Defined only WITH_WSREP=ON. WSREP_ON: Defined as unlikely(WSREP_ON_). wsrep_on(): Defined as WSREP_ON && wsrep_service->wsrep_on_func(). The reason why we have wsrep_on() at all is that the macro WSREP(thd) depends on the definition of THD, and that is intentionally an opaque data type for InnoDB. So, we cannot avoid invoking wsrep_on(), but we can evaluate the less expensive condition WSREP_ON before calling the function. |
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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 |