Function nxtask_spawn_exec

sched/task/task_spawn.c:186–242

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

static int nxtask_spawn_exec(FAR pid_t *pidp, FAR const char *name,
                             main_t entry,
                             FAR const posix_spawn_file_actions_t *actions,
                             FAR const posix_spawnattr_t *attr,
                             FAR char * const *argv, FAR char * const envp[])
{
  FAR void *stackaddr = NULL;
  size_t stacksize;
  int priority;
  int pid;
  int ret = OK;

  /* Use the default priority and stack size if no attributes are provided */

  if (attr)
    {
      priority  = attr->priority;
      stacksize = attr->stacksize;
      stackaddr = attr->stackaddr;
    }
  else
    {
      struct sched_param param;

      /* Set the default priority to the same priority as this task */

      ret = nxsched_get_param(0, &param);
      if (ret < 0)
        {
          return ret;
        }

      priority  = param.sched_priority;
      stacksize = CONFIG_POSIX_SPAWN_DEFAULT_STACKSIZE;
    }

  /* Start the task */

  pid = nxtask_spawn_create(name, priority, stackaddr,
                            stacksize, entry, argv,
                            envp ? envp : environ, actions, attr);
  if (pid < 0)
    {
      ret = pid;
      serr("ERROR: nxtask_spawn_create failed: %d\n", ret);
      return ret;
    }

  /* Return the task ID to the caller */

  if (pid)
    {
      *pidp = pid;
    }

  return ret;
}