Re: security hooks on object creation

(2010/11/11 3:00), Robert Haas wrote:
> On Wed, Nov 10, 2010 at 8:33 AM, KaiGai Kohei<kaigai@kaigai.gr.jp>  wrote:
>> (2010/11/10 13:06), Robert Haas wrote:
>>>>
>>>> In this patch, we put InvokeObjectAccessHook0 on the following functions.
>>>>
>>>> - heap_create_with_catalog() for relations/attributes
>>>> - ATExecAddColumn() for attributes
>>>> - NamespaceCreate() for schemas
>>>> - ProcedureCreate() for aggregates/functions
>>>> - TypeCreate() and TypeShellMake() for types
>>>> - create_proc_lang() for procedural languages
>>>> - inv_create() for large objects
>>>
>>> I think you ought to try to arrange to avoid the overhead of a
>>> function call in the common case where nobody's using the hook.
>>> That's why I originally suggested making InvokeObjectAccessHook() a
>>> macro around the actual function call.
>>>
>> Hmm. Although I have little preference here, the penalty to call
>> an empty function (when no plugins are installed) is not visible,
>> because frequency of DDL commands are not high.
>> Even so, is it necessary to replace them by macros?
>
> It's a fair point.  I'm open to other opinions but my vote is to shove
> a macro in there.  A pointer test is cheaper than a function call, and
> doesn't really complicate things much.
>
Since I have no strong preference function call here, so, I'll revise my
patch according to your vote.

Thanks,
-- 
KaiGai Kohei <kaigai@kaigai.gr.jp>