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THD::init_for_queries() pushed back:

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see comments to the method why


sql/sql_class.h:
  THD::init_for_queries() pushed back:
  see comments to the method why
  Cleanup
This commit is contained in:
unknown
2003-12-21 22:26:45 +03:00
parent b4b8d1f677
commit 2fe005174f
4 changed files with 30 additions and 7 deletions
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11
sql/sql_class.h
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@ -405,7 +405,6 @@ struct system_variables
void free_tmp_table(THD *thd, TABLE *entry);
class Prepared_statement;
/*
State of a single command executed against this connection.
@ -760,6 +759,16 @@ public:
~THD();
void init(void);
/*
Initialize memory roots necessary for query processing and (!)
pre-allocate memory for it. We can't do that in THD constructor because
there are use cases (acl_init, delayed inserts, watcher threads,
killing mysqld) where it's vital to not allocate excessive and not used
memory. Note, that we still don't return error from init_for_queries():
if preallocation fails, we should notice that at the first call to
alloc_root.
*/
void init_for_queries();
void change_user(void);
void cleanup(void);
bool store_globals();