That's enough to get me past this hurdle. I am not sure this is the right
path... I think we could make more money by doing less slicing and dicing
of data in TCL and more in the database.
Thanks!
On Mon, Nov 25, 2013 at 1:16 PM, Jeff Rogers <dv...@diphi.com> wrote:
> Ian Harding wrote:
>
>> I have a mountain of code in TCL, and I am thinking of rewriting some of
>> it in C.
>>
>> In a C module I have a function that is registered to an URL. Like I
>> said, I have a bunch of TCL code that I would like to be able to use
>> until (if ever) it gets rewritten.
>>
>> I see that I can execute TCL code and get a string back via
>> Ns_TclEval(). It seems to work, but my first attempt, foolishly, was to
>> use a utility TCL proc that returns a db handle. I can execute it, and I
>> get the string that represents the name of the handle, but that's not
>> exactly the same as a C Ns_DbHandle.
>>
>> Is there any way to share stuff like db handles back and forth like that?
>>
>
> The function to get a Ns_DbHandle from a handle name is
> NS_EXTERN int Ns_TclDbGetHandle(Tcl_Interp *interp, char *handleId,
> Ns_DbHandle **handle)
>
> You still have to honor the db handle lifecycle (i.e., release it at the
> end of a request) and sharing restrictions (don't share across threads)
> when you're in C code.
>
>
> I saw some functions for sharing an Ns_Set, but that's about it.
>>
>> I would appreciate any pointers for this kind of thing... I am just
>> getting started.
>>
>
> The header files in "include" are the definition of the public API. A lot
> of the functions aren't well documented separately, but most are documented
> in their source files. Using 'ctags' is helpful.
>
> Why are you rewriting? If it's intended for performance, make sure you
> are testing your performance and addressing the hotspots and not just
> things that look like they might be slow.
>
> There is an aolserver channel on freenode, it's quiet but there's
> typically a few people there. Feel free to stop by.
>
> Pretty basic pointers here, but they're all I have at the moment :)
>
> -J
>
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