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Added interface for first set of dynamic variables.

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jani@rhols221.adsl.netsonic.fi
2002-06-28 19:30:09 +03:00
parent 20005fad01
commit 7cad1f9313
21 changed files with 265 additions and 128 deletions
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17
sql/sql_select.cc
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@@ -1717,6 +1717,7 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
{
ulong rec;
double tmp;
THD *thd= current_thd;
if (!rest_tables)
{
@@ -1983,7 +1984,8 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
tmp=(double) s->read_time;
/* Calculate time to read through cache */
tmp*=(1.0+floor((double) cache_record_length(join,idx)*
record_count/(double) join_buff_size));
record_count /
(double) thd->variables.join_buff_size));
}
if (best == DBL_MAX ||
(tmp + record_count/(double) TIME_FOR_COMPARE*s->found_records <
@@ -3774,12 +3776,13 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
param->recinfo=recinfo;
store_record(table,2); // Make empty default record
if (tmp_table_size == ~(ulong) 0) // No limit
if (thd->variables.tmp_table_size == ~(ulong) 0) // No limit
table->max_rows= ~(ha_rows) 0;
else
table->max_rows=(((table->db_type == DB_TYPE_HEAP) ?
min(tmp_table_size, max_heap_table_size) :
tmp_table_size)/ table->reclength);
min(thd->variables.tmp_table_size,
thd->variables.max_heap_table_size) :
thd->variables.tmp_table_size)/ table->reclength);
set_if_bigger(table->max_rows,1); // For dummy start options
keyinfo=param->keyinfo;
@@ -5760,6 +5763,8 @@ remove_duplicates(JOIN *join, TABLE *entry,List<Item> &fields, Item *having)
int error;
ulong reclength,offset;
uint field_count;
THD *thd= current_thd;
DBUG_ENTER("remove_duplicates");
entry->reginfo.lock_type=TL_WRITE;
@@ -5788,7 +5793,7 @@ remove_duplicates(JOIN *join, TABLE *entry,List<Item> &fields, Item *having)
if (entry->db_type == DB_TYPE_HEAP ||
(!entry->blob_fields &&
((ALIGN_SIZE(reclength) +sizeof(HASH_LINK)) * entry->file->records <
sortbuff_size)))
thd->variables.sortbuff_size)))
error=remove_dup_with_hash_index(join->thd, entry,
field_count, first_field,
reclength, having);
@@ -6109,7 +6114,7 @@ join_init_cache(THD *thd,JOIN_TAB *tables,uint table_count)
cache->length=length+blobs*sizeof(char*);
cache->blobs=blobs;
*blob_ptr=0; /* End sequentel */
size=max(join_buff_size,cache->length);
size=max(thd->variables.join_buff_size, cache->length);
if (!(cache->buff=(uchar*) my_malloc(size,MYF(0))))
DBUG_RETURN(1); /* Don't use cache */ /* purecov: inspected */
cache->end=cache->buff+size;