Re: [libmicrohttpd] Sharing per-thread resources between connections

[Carlos Eduardo Moreira dos Santos]

I realized that pthread_once runs only once per execution instead of once per thread as I need. After reading libmicrohttpd and pthread docs, it seems that it is not possible to add any other thread initialization function besides the one in specified pthread_create. I could only find pthread_get/setspecific (and NULL value checking) as a solution for thread-local variable initialization. Please, let me know if I am going into the right direction.

Regards,
Carlos Eduardo

On Tue, Aug 12, 2014 at 6:20 PM, Christian Grothoff <address@hidden> wrote:

The real answer is that _you_ must measure it --- especially since the
real answer will depend on your platform, application and performance
requirements.  I _suspect_ that it won't matter either way.

Happy hacking!

-Christian

On 08/12/2014 10:36 PM, Carlos Eduardo Moreira dos Santos wrote:
> __thread keyword is simple to use, but I have to open one socket per
> thread, so I used pthread_once and also pthread_key_create to close it. The
> only disadvantage I noticed is running pthread_once in every access handler
> callback call. I don't know the details, but pthread_once should be fast
> enough to discard my code, isn't it?
>
> Best,
> Carlos Eduardo
>
>
> On Thu, Jul 3, 2014 at 5:05 AM, Christian Grothoff <address@hidden>
> wrote:
>
>> Well, pthread_key_create() also works, I guess, but I was thinking about
>> a slightly more lightweight method:
>>
>> http://gcc.gnu.org/onlinedocs/gcc-3.3/gcc/Thread-Local.html
>>
>> But both should work, and the best choice may really depend on your
>> application and its intended environment.