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)
• Status: Closed
• Category: MySQL Server: C API (client library)
• Severity: S4 (Feature request)
• Version: 5.5,5.6
• OS: Any
• 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] MySQL Verification Team

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...