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MDEV-6274 Collation usage statistics

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Adding collation usage statistics into the feedback plugin I_S table.
This commit is contained in:
Alexander Barkov
2014-08-11 05:45:45 +04:00
parent 4105cbf4a2
commit 22a64047d1
7 changed files with 99 additions and 2 deletions
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19
plugin/feedback/utils.cc
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@@ -383,6 +383,25 @@ int fill_misc_data(THD *thd, TABLE_LIST *tables)
return 0;
}
int fill_collation_statistics(THD *thd, TABLE_LIST *tables)
{
TABLE *table= tables->table;
for (uint id= 1; id < MY_ALL_CHARSETS_SIZE; id++)
{
ulonglong count;
if (my_collation_is_known_id(id) &&
(count= my_collation_statistics_get_use_count(id)))
{
char name[MY_CS_NAME_SIZE + 32];
size_t namelen= my_snprintf(name, sizeof(name),
"Collation used %s",
get_charset_name(id));
INSERT2(name, namelen, (count, UNSIGNED));
}
}
return 0;
};
/**
calculates the server unique identifier