Function nxtask_activate

sched/task/task_activate.c:60–102

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

void nxtask_activate(FAR struct tcb_s *tcb)
{
  irqstate_t flags = enter_critical_section();
  FAR struct tcb_s *rtcb = this_task();

#ifdef CONFIG_SCHED_INSTRUMENTATION

  /* Check if this is really a re-start */

  if (tcb->task_state != TSTATE_TASK_INACTIVE)
    {
      /* Inform the instrumentation layer that the task
       * has stopped
       */

      sched_note_stop(tcb);
    }

  /* Inform the instrumentation layer that the task
   * has started
   */

  sched_note_start(tcb);
#endif

  /* Remove the task from waiting list */

  nxsched_remove_blocked(tcb);

  sinfo("%s pid=%d,TCB=%p\n", get_task_name(tcb),
        tcb->pid, tcb);

  /* Add the task to ready-to-run task list, and
   * perform the context switch if one is needed
   */

  if (nxsched_add_readytorun(tcb))
    {
      up_switch_context(this_task(), rtcb);
    }

  leave_critical_section(flags);
}