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To save 32KB memory per thread when --log-bin is not used, we do not

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init the binlog_cache (THD::transaction.trans_log).
I have checked all places where trans_log is used, because as now
it may not be inited in some cases, we have to be cautious
(will forward this commit mail to Heikki).


sql/handler.cc:
  Do not use the transaction binlog cache if binlog is not open
sql/sql_class.cc:
  We do not init the transaction binlog cache if binlog is not open.
  This saves 32 KB memory per thread, if --log-bin is not used.
sql/sql_class.h:
  warning comment
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unknown
2004-03-26 19:11:37 +01:00
parent 1450ee3a67
commit 11bea84e43
3 changed files with 17 additions and 12 deletions
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sql/sql_class.h
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@@ -684,7 +684,7 @@ public:
delayed_insert *di;
my_bool tablespace_op; /* This is TRUE in DISCARD/IMPORT TABLESPACE */
struct st_transactions {
IO_CACHE trans_log;
IO_CACHE trans_log; // Inited ONLY if binlog is open !
THD_TRANS all; // Trans since BEGIN WORK
THD_TRANS stmt; // Trans for current statement
uint bdb_lock_count;