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namespace Show {
static ST_FIELD_INFO table_stats_fields[]=
{
Column("TABLE_SCHEMA", Varchar(NAME_LEN), NOT_NULL, "Table_schema"),
Column("TABLE_NAME", Varchar(NAME_LEN), NOT_NULL, "Table_name"),
Column("ROWS_READ", SLonglong(), NOT_NULL, "Rows_read"),
Column("ROWS_CHANGED", SLonglong(), NOT_NULL, "Rows_changed"),
Column("ROWS_CHANGED_X_INDEXES",SLonglong(), NOT_NULL, "Rows_changed_x_#indexes"),
Column("ROWS_INSERTED", SLonglong(), NOT_NULL, "Rows_inserted"),
Column("ROWS_UPDATED", SLonglong(), NOT_NULL, "Rows_updated"),
Column("ROWS_DELETED", SLonglong(), NOT_NULL, "Rows_deleted"),
Column("KEY_READ_HITS", SLonglong(), NOT_NULL, "Key_read_hits"),
Column("KEY_READ_MISSES", SLonglong(), NOT_NULL, "Key_read_misses"),
Column("PAGES_ACCESSED", SLonglong(), NOT_NULL, "Pages_accessed"),
Column("PAGES_READ_FROM_DISK", SLonglong(), NOT_NULL, "Pages_read_from_disk"),
CEnd()
};
} // namespace Show
static int table_stats_fill(THD *thd, TABLE_LIST *tables, COND *cond)
{
TABLE *table= tables->table;
mysql_mutex_lock(&LOCK_global_table_stats);
for (uint i= 0; i < global_table_stats.records; i++)
{
char *end_of_schema;
TABLE_STATS *table_stats=
(TABLE_STATS*)my_hash_element(&global_table_stats, i);
TABLE_LIST tmp_table;
size_t schema_length, table_name_length;
struct rows_stats *rows_stats= &table_stats->rows_stats;
ulonglong rows_changed;
end_of_schema= strend(table_stats->table);
schema_length= (size_t) (end_of_schema - table_stats->table);
table_name_length= strlen(table_stats->table + schema_length + 1);
bzero((char*) &tmp_table,sizeof(tmp_table));
tmp_table.db.str= table_stats->table;
tmp_table.db.length= schema_length;
tmp_table.table_name.str= end_of_schema+1;
tmp_table.table_name.length= table_name_length;
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;
rows_changed= (rows_stats->inserted + rows_stats->updated +
rows_stats->deleted);
table->field[0]->store(table_stats->table, schema_length,
system_charset_info);
table->field[1]->store(table_stats->table + schema_length+1,
table_name_length, system_charset_info);
table->field[2]->store((longlong) rows_stats->read, TRUE);
table->field[3]->store((longlong) rows_changed, TRUE);
table->field[4]->store((longlong)table_stats->rows_changed_x_indexes,
TRUE);
table->field[5]->store((longlong) rows_stats->inserted, TRUE);
table->field[6]->store((longlong) rows_stats->updated, TRUE);
table->field[7]->store((longlong) rows_stats->deleted, TRUE);
table->field[8]->store((longlong) rows_stats->key_read_hit, TRUE);
table->field[9]->store((longlong) rows_stats->key_read_miss, TRUE);
table->field[10]->store((longlong) rows_stats->pages_accessed, TRUE);
table->field[11]->store((longlong) rows_stats->pages_read_count, TRUE);
if (schema_table_store_record(thd, table))
{
mysql_mutex_unlock(&LOCK_global_table_stats);
return 1;
}
}
mysql_mutex_unlock(&LOCK_global_table_stats);
return 0;
}
static int table_stats_reset()
{
mysql_mutex_lock(&LOCK_global_table_stats);
free_global_table_stats();
init_global_table_stats();
mysql_mutex_unlock(&LOCK_global_table_stats);
return 0;
}
static int table_stats_init(void *p)
{
ST_SCHEMA_TABLE *schema= (ST_SCHEMA_TABLE *)p;
schema->fields_info= Show::table_stats_fields;
schema->fill_table= table_stats_fill;
schema->reset_table= table_stats_reset;
return 0;
}
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