1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
namespace Show {
static ST_FIELD_INFO index_stats_fields[]=
{
Column("TABLE_SCHEMA", Varchar(NAME_LEN), NOT_NULL, "Table_schema"),
Column("TABLE_NAME", Varchar(NAME_LEN), NOT_NULL, "Table_name"),
Column("INDEX_NAME", Varchar(NAME_LEN), NOT_NULL, "Index_name"),
Column("ROWS_READ", SLonglong(), NOT_NULL, "Rows_read"),
Column("QUERIES", SLonglong(), NOT_NULL, "Queries"),
CEnd()
};
} // namespace Show
static int index_stats_fill(THD *thd, TABLE_LIST *tables, COND *cond)
{
TABLE *table= tables->table;
mysql_mutex_lock(&LOCK_global_index_stats);
for (uint i= 0; i < global_index_stats.records; i++)
{
INDEX_STATS *index_stats =
(INDEX_STATS*) my_hash_element(&global_index_stats, i);
TABLE_LIST tmp_table;
const char *index_name;
size_t index_name_length;
bzero((char*) &tmp_table,sizeof(tmp_table));
tmp_table.db.str= index_stats->index;
tmp_table.db.length= strlen(index_stats->index);
tmp_table.table_name.str= index_stats->index + tmp_table.db.length + 1;
tmp_table.table_name.length= strlen(tmp_table.table_name.str);
tmp_table.grant.privilege= NO_ACL;
if (check_access(thd, SELECT_ACL, tmp_table.db.str,
&tmp_table.grant.privilege, NULL, 0, 1) ||
check_grant(thd, SELECT_ACL, &tmp_table, 1, 1, 1))
continue;
index_name= tmp_table.table_name.str + tmp_table.table_name.length + 1;
index_name_length= (index_stats->index_name_length - tmp_table.db.length -
tmp_table.table_name.length - 3);
table->field[0]->store(tmp_table.db.str, tmp_table.db.length, system_charset_info);
table->field[1]->store(tmp_table.table_name.str, tmp_table.table_name.length,
system_charset_info);
table->field[2]->store(index_name, (uint) index_name_length, system_charset_info);
table->field[3]->store((longlong)index_stats->rows_read, TRUE);
table->field[4]->store((longlong)index_stats->queries, TRUE);
if (schema_table_store_record(thd, table))
{
mysql_mutex_unlock(&LOCK_global_index_stats);
return 1;
}
}
mysql_mutex_unlock(&LOCK_global_index_stats);
return 0;
}
static int index_stats_reset()
{
mysql_mutex_lock(&LOCK_global_index_stats);
free_global_index_stats();
init_global_index_stats();
mysql_mutex_unlock(&LOCK_global_index_stats);
return 0;
}
static int index_stats_init(void *p)
{
ST_SCHEMA_TABLE *schema= (ST_SCHEMA_TABLE *)p;
schema->fields_info= Show::index_stats_fields;
schema->fill_table= index_stats_fill;
schema->reset_table= index_stats_reset;
return 0;
}
|
