On Wednesday 23 November 2005 20:25, Iain Duncan wrote:

> Thanks Istvan. Is this something that must be called for the whole
> process from main, or can it be called in each thread? The architecture
> of the host is basically the same as my examples, so main spawns several
> threads, one handles fltk stuff and one calls csound. Do I call the
> above from the main or the csound thread?

It was originally intended to be used in the main thread at start-up.
However, you can make the child threads inherit the real-time scheduling
policy with something like:

uintptr_t csound_thread_func(void *userData);

int main(int argc, char **argv)
{
  void *csound_thread, *userData;
  ...
#ifdef LINUX
  if (set_rt_priority(98, 97, 10) != 0)
    error();  /* fail in some way */
#endif
  ...
#ifdef LINUX
  {
    pthread_attr_t attr;
    pthread_t th;
    pthread_attr_init(&attr);
    pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED);
    pthread_create(&th, &attr, (void *(*)(void*)) csound_thread_func,
                   userData);
    csound_thread = (void*) th;
    pthread_attr_destroy(&attr);
  }
#else
  csound_thread = csoundCreateThread(csound_thread_func, userData);
#endif

> And do I then call this stuff: 
>  > #ifdef LINUX
>  >   {
>  >     struct sched_param  sp;
>  >     // IV - Aug 27 2002: widget thread is always run with normal
>  > priority memset(&sp, 0, sizeof(struct sched_param));
>  >     pthread_setschedparam(pthread_self(), SCHED_OTHER, &sp);
>  >   }
>  > #endif
>
> from the fltk thread?

Yes.


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