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Add likely/unlikely to speed up execution

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Added to:
- if (error)
- Lex
- sql_yacc.yy and sql_yacc_ora.yy
- In header files to alloc() calls
- Added thd argument to thd_net_is_killed()
This commit is contained in:
Monty
2018-04-04 12:16:12 +03:00
parent a22a339f8e
commit 30ebc3ee9e
118 changed files with 4874 additions and 4440 deletions
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7
sql/sql_help.cc
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@ -618,8 +618,9 @@ SQL_SELECT *prepare_simple_select(THD *thd, Item *cond,
table->covering_keys.clear_all();
SQL_SELECT *res= make_select(table, 0, 0, cond, 0, 0, error);
if (*error || (res && res->check_quick(thd, 0, HA_POS_ERROR)) ||
(res && res->quick && res->quick->reset()))
if (unlikely(*error) ||
(likely(res) && unlikely(res->check_quick(thd, 0, HA_POS_ERROR))) ||
(likely(res) && res->quick && unlikely(res->quick->reset())))
{
delete res;
res=0;
@ -658,7 +659,7 @@ SQL_SELECT *prepare_select_for_name(THD *thd, const char *mask, size_t mlen,
pfname->charset()),
new (mem_root) Item_string_ascii(thd, "\\"),
FALSE);
if (thd->is_fatal_error)
if (unlikely(thd->is_fatal_error))
return 0; // OOM
return prepare_simple_select(thd, cond, table, error);
}