Re: [Dazuko-help] dazuko and threads

[John Ogness]

Hi,

Thank you for bringing this to my attention. A new pre-release is available:

http://savannah.gnu.org/download/dazuko/dazuko-1.2.2-pre2.tar.gz

This version includes support for threads. However, the functions are 
not thread-safe, so you should add your own locks around the dazukoXXX 
function calls.

John Ogness


Frantisek Mensik wrote:
> Hi,
>
> cause:
> dazkoio.c file, lines 40 and 41.
> _DAZUKO_DEVICE is set to value 7 after first call of dazukoRegister 
> function from the first thread. So call of the same function ends with 
> 'return -1;' in the second thread.
>
> - Frantisek Mensik
>
>
> John Ogness wrote:
>
> > Hi,
> >
> > What kinds of errors were you getting? Dazuko identifies registered
> > processes by PID. Since each thread in Linux has its own PID, it must
> > register separately. Threads of a registered process will not be
> > recognized as registered.
> >
> > If you compile Dazuko using with the -DDEBUG flag, then Dazuko will
> > output more information about what is going on. It might help to make
> > things clearer.
> >
> > John Ogness
> >
> >
> > Frantisek Mensik wrote:
> >
> > > Hi,
> > > I've tryed it in a test application and I couldn't register in second
> > > and third threads. Wouldn't it be better to register only once in a main
> > > thread, than create threads (pthread_create) which would get access from
> > > included files.
> > >
> > > -Frantisek Mensik
> > >
> > >
> > > John Ogness wrote:
> > >
> > >
> > > > Hi,
> > > >
> > > > Yes, each thread may register with Dazuko. However, each thread is then
> > > > also responsible for handling file access control.
> > > >
> > > > John Ogness
> > > >
> > > >
> > > > Frantisek Mensik wrote:
> > > >
> > > >
> > > > > Hi,
> > > > > if I have an application with more threads, is it possible to register
> > > > > dazuko from each thread?
> > > > > Thanks for an answer,
> > > > > -F.M.