[jira] [Commented] (MESOS-2211) Include guard naming fixup

["Greg Mann (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-2211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15419523#comment-15419523 ] 

Greg Mann commented on MESOS-2211:
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This just came up in a review, so I'm adding my comments here. I would propose one of the following 3 approaches, in my personal order of preference:

* Use both {{#define}} guards _and_ {{#pragma once}}. This gives us the best of both worlds, with little effort.
* Use {{#pragma once}} since it's widely supported. As [~karya] suggested, we could amend our style guide to accommodate this.
* Use {{#define}} guards which contain the full path in the guard. Verbosity in include guards is not something that I'm worried about, and this provides a dead simple way to ensure a unique name for every guard.

> Include guard naming fixup
> --------------------------
>
>                 Key: MESOS-2211
>                 URL: https://issues.apache.org/jira/browse/MESOS-2211
>             Project: Mesos
>          Issue Type: Bug
>            Reporter: Till Toenshoff
>            Priority: Trivial
>              Labels: mesosphere
>
> Triggered by a comment in a review request, I noticed that we currently have no consistent style for naming include guards.
> Examples: 
> include/mesos/resources.hpp: {{#define __RESOURCES_HPP__}}
> include/mesos/executor.hpp: {{#define __MESOS_EXECUTOR_HPP__}}
> include/mesos/mesos.hpp: {{#define __MESOS_HPP__}}
> I think the **right** way would be stating the path and include file name within the guard, so the above at fault become:
> include/mesos/resources.hpp: {{#define __MESOS_RESOURCES_HPP__}}
> include/mesos/mesos.hpp: {{#define __MESOS_MESOS_HPP__}}
> Everything from include/XXX should have a __XXX_ prefix in its guard name, anything from src/XXX should have a __XXX_ prefix. This should also apply to multiple folder levels; e.g. include/XXX/YYY/FOO should have a __XXX_YYY_FOO prefix.



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