Bug #68121 Support for floating-point system variables using the plugin interface.
Submitted: 18 Jan 2013 21:54 Modified: 15 Jul 2013 18:12
Reporter: Davi Arnaut (OCA) Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: C API (client library) Severity:S4 (Feature request)
Version:5.5,5.6 OS:Any
Assigned to: CPU Architecture:Any

[18 Jan 2013 21:54] Davi Arnaut
Description:
It would be useful if the server plugin interface allowed plugins to define and expose floating-point system variables of type double.

How to repeat:
There is currently no way to define floating-point system variables using the server plugin API.
[18 Jan 2013 21:54] Davi Arnaut
Support for floating-point system variables using the plugin interface.

(*) I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.

Contribution: 0001-Support-for-floating-point-system-variables-using-th.patch (application/octet-stream, text), 11.92 KiB.

[18 Jan 2013 21:55] Davi Arnaut
The fractional part of the def, min and max values of system  variables is ignored.

(*) I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.

Contribution: 0002-The-fractional-part-of-the-def-min-and-max-values-of.patch (application/octet-stream, text), 9.50 KiB.

[18 Jan 2013 22:02] Mark Callaghan
For the FB change see http://bugs.mysql.com/bug.php?id=62534
I have not compared it with the patch from Davi
[19 Jan 2013 4:22] Shane Bester
many variables really need this functionlity, thanks davi!
[15 Jul 2013 18:12] Paul Dubois
Noted in 5.7.2 changelog.

Plugins can now define and expose floating-point system variables of
type double using the MYSQL_SYSVAR_DOUBLE() and MYSQL_THDVAR_DOUBLE()
accessor macros. See:
http://dev.mysql.com/doc/refman/5.7/en/plugin-data-structures.html#client-plugin-descripto...