The Linux thread functionality was introduced by Konstantin, so he might have a better idea about that.

What I usually do is a graceful thread shutdown just by a flag. Like

int stop_thread = 0;

INT f(void *param)
{
  for (int x = 0; x < 100; x++) {
    sleep(1);
    if (stop_thread) {
      // clean up things here...
      return 0;
    }
  }
  return 0;
}

int main()
{
 printf("creating thread\n");
 midas_thread_t thr = ss_thread_create(f, NULL);
 sleep(2);
 printf("killing thread\n");
 stop_thread = 1;
 sleep(2);
 printf("success\n");
 return 0;
}


This way I have a chance to clean up things in the thread, which otherwise I would not be able to.