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Add new user variables for tuning memory usage:

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query_alloc_block_size, query_prealloc_size, range_alloc_block_size,transaction_alloc_block_size and transaction_prealloc_size
Add more checks for "out of memory" detection in range optimization
This commit is contained in:
monty@mashka.mysql.fi
2003-10-11 22:00:24 +03:00
parent 9bba878b8c
commit c95d142f8f
21 changed files with 257 additions and 81 deletions
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14
sql/opt_range.h
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@ -80,7 +80,7 @@ public:
ha_rows records;
double read_time;
QUICK_SELECT(TABLE *table,uint index_arg,bool no_alloc=0);
QUICK_SELECT(THD *thd, TABLE *table,uint index_arg,bool no_alloc=0);
virtual ~QUICK_SELECT();
void reset(void) { next=0; it.rewind(); }
int init() { return error=file->index_init(index); }
@ -124,13 +124,15 @@ class SQL_SELECT :public Sql_alloc {
SQL_SELECT();
~SQL_SELECT();
bool check_quick(bool force_quick_range=0, ha_rows limit = HA_POS_ERROR)
{ return test_quick_select(~0L,0,limit, force_quick_range) < 0; }
bool check_quick(THD *thd, bool force_quick_range= 0,
ha_rows limit= HA_POS_ERROR)
{ return test_quick_select(thd, ~0L,0,limit, force_quick_range) < 0; }
inline bool skipp_record() { return cond ? cond->val_int() == 0 : 0; }
int test_quick_select(key_map keys,table_map prev_tables,ha_rows limit,
bool force_quick_range=0);
int test_quick_select(THD *thd, key_map keys, table_map prev_tables,
ha_rows limit, bool force_quick_range=0);
};
QUICK_SELECT *get_quick_select_for_ref(TABLE *table, struct st_table_ref *ref);
QUICK_SELECT *get_quick_select_for_ref(THD *thd, TABLE *table,
struct st_table_ref *ref);
#endif