Function nxtask_start

sched/task/task_start.c:68–113

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

void nxtask_start(void)
{
  FAR struct tcb_s *tcb = this_task();
  uint8_t ttype = tcb->flags & TCB_FLAG_TTYPE_MASK;
  int exitcode = EXIT_FAILURE;
  FAR char **argv;
  int argc;

  DEBUGASSERT(ttype != TCB_FLAG_TTYPE_PTHREAD);

#ifdef CONFIG_SIG_DEFAULT
  if (ttype != TCB_FLAG_TTYPE_KERNEL)
    {
      /* Set up default signal actions for NON-kernel thread */

      nxsig_default_initialize(tcb);
    }
#endif

  /* Take args from stack, as group is shared for kthreads */

  argv = nxsched_get_stackargs(tcb);
  for (argc = 0; argv && argv[argc]; argc++);

  /* Call the 'main' entry point passing argc and argv.  In the kernel build
   * this has to be handled differently if we are starting a user-space task;
   * we have to switch to user-mode before calling the task.
   */

  if (ttype == TCB_FLAG_TTYPE_KERNEL)
    {
      exitcode = tcb->entry.main(argc, argv);
    }
  else
    {
#ifdef CONFIG_BUILD_FLAT
      nxtask_startup(tcb->entry.main, argc, argv);
#else
      up_task_start(tcb->entry.main, argc, argv);
#endif
    }

  /* Call _exit() if/when the task returns */

  _exit(exitcode);
}