Function nx_pthread_create

sched/pthread/pthread_create.c:183–469

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

int nx_pthread_create(pthread_trampoline_t trampoline, FAR pthread_t *thread,
                      FAR const pthread_attr_t *attr,
                      pthread_startroutine_t entry, pthread_addr_t arg)
{
  pthread_attr_t default_attr = g_default_pthread_attr;
  FAR struct tcb_s *ptcb;
  struct sched_param param;
  FAR struct tcb_s *parent;
  int policy;
  int errcode;
  int ret;

  DEBUGASSERT(trampoline != NULL);

  parent = this_task();
  DEBUGASSERT(parent != NULL);

  /* If attributes were not supplied, use the default attributes */

  if (!attr)
    {
      /* Inherit parent priority by default. except idle */

      if (!is_idle_task(parent))
        {
          default_attr.priority = parent->sched_priority;
        }

      attr = &default_attr;
    }

  /* Allocate a TCB for the new task. */

  ptcb = kmm_zalloc(sizeof(struct tcb_s) + sizeof(struct pthread_entry_s));
  if (!ptcb)
    {
      serr("ERROR: Failed to allocate TCB\n");
      return ENOMEM;
    }

  ptcb->flags |= TCB_FLAG_FREE_TCB;

  /* Initialize the task join */

  nxtask_joininit(ptcb);

  /* Bind the parent's group to the new TCB (we have not yet joined the
   * group).
   */

  group_bind(ptcb);

#ifdef CONFIG_ARCH_ADDRENV
  /* Share the address environment of the parent task group. */

  ret = addrenv_join(this_task(), ptcb);
  if (ret < 0)
    {