Function work_usrstart

libs/libc/wqueue/work_usrthread.c:278–331

 ****************************************************************************/

int work_usrstart(void)
{
  int ret;
#ifndef CONFIG_BUILD_PROTECTED
  pthread_t usrwork;
  pthread_attr_t attr;
  struct sched_param param;
#endif

  /* Initialize the work queue */

  list_initialize(&g_usrwork.q);

#ifdef CONFIG_BUILD_PROTECTED

  /* Start a user-mode worker thread for use by applications. */

  ret = task_create("uwork",
                    CONFIG_LIBC_USRWORKPRIORITY,
                    CONFIG_LIBC_USRWORKSTACKSIZE,
                    work_usrthread, NULL);
  if (ret < 0)
    {
      int errcode = get_errno();
      DEBUGASSERT(errcode > 0);
      return -errcode;
    }

  return ret;
#else
  /* Start a user-mode worker thread for use by applications. */

  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, CONFIG_LIBC_USRWORKSTACKSIZE);

  pthread_attr_getschedparam(&attr, &param);
  param.sched_priority = CONFIG_LIBC_USRWORKPRIORITY;
  pthread_attr_setschedparam(&attr, &param);

  ret = pthread_create(&usrwork, &attr, work_usrthread, NULL);
  if (ret != 0)
    {
      return -ret;
    }

  /* Detach because the return value and completion status will not be
   * requested.
   */

  pthread_detach(usrwork);

  return (pid_t)usrwork;
#endif
}

#endif /* CONFIG_LIBC_USRWORK && !__KERNEL__*/