Re: [Caml-list] Wrapping C code using pthread.

[Guillaume Yziquel <guillaume.yziquel@citycable.ch>]

ygrek a écrit :
> On Fri, 25 Dec 2009 21:57:21 +0100
> Guillaume Yziquel <guillaume.yziquel@citycable.ch> wrote:
> 
>> Hello.
>>
>> I'm currently trying to wrap up together a C interface for the MonetDB5 
>> database system. I'm getting quite a lot of segfaults (a lot of which 
>> come from MonetDB itself), and I'm therefore wondering the following 
>> about pthreads and OCaml:
>>
>> The server is started via a pthread:
>>
>> pthread_create(&sqlthread, NULL, start_sql_server, (void *) server);
>>
>> and I would like to know what kind of things I should look at with 
>> C-side pthreads in order to avoid segfaults...
> 
> How does the OCaml code gets executed? Via callbacks from this thread?
> If so, have a look at http://caml.inria.fr/mantis/view.php?id=4702

Thanks for the pointer.

No this is not the case. In fact, it's a library that starts an embedded 
database server in its own pthread. Completely distinct from OCaml.

In fact, my trouble is that when things are compiled to native code, it 
works fine. However, things get screwed up when compiled to bytecode, 
resulting in a segfault.

Are pthreads compatible with OCaml bytecode?

All the best,

-- 
      Guillaume Yziquel
http://yziquel.homelinux.org/