int pthread_completejoin(pid_t pid, FAR void *exit_value)
{
FAR struct task_group_s *group = task_getgroup(pid);
FAR struct join_s *pjoin;
sinfo("pid=%d exit_value=%p group=%p\n", pid, exit_value, group);
DEBUGASSERT(group);
/* First, find thread's structure in the private data set. */
(void)pthread_takesemaphore(&group->tg_joinsem);
pjoin = pthread_findjoininfo(group, pid);
if (!pjoin)
{
serr("ERROR: Could not find join info, pid=%d\n", pid);
(void)pthread_givesemaphore(&group->tg_joinsem);
return ERROR;
}
else
{
bool waiters;
/* Save the return exit value in the thread structure. */
pjoin->terminated = true;
pjoin->exit_value = exit_value;
/* Notify waiters of the availability of the exit value */
waiters = pthread_notifywaiters(pjoin);
/* If there are no waiters and if the thread is marked as detached.
* then discard the join information now. Otherwise, the pthread
* join logic will call pthread_destroyjoin() when all of the threads
* have sampled the exit value.
*/
if (!waiters && pjoin->detached)
{
pthread_destroyjoin(group, pjoin);
}
/* Giving the following semaphore will allow the waiters
* to call pthread_destroyjoin.
*/
(void)pthread_givesemaphore(&group->tg_joinsem);
}
return OK;
}
static void *findjoininfo_callback(void *param)
{
int ret_chk = 0;
FAR struct task_group_s *group;
FAR struct join_s *st_pjoininfo;
g_bpthreadcallback = true;
pid_t pid = getpid();
group = task_getgroup(pid);
st_pjoininfo = pthread_findjoininfo(group, pid);
if (st_pjoininfo == NULL) {
printf("pthread_findjoininfo: Fail \n");
g_bpthreadcallback = false;
goto err;
}
ret_chk = pthread_equal((pid_t)st_pjoininfo->thread, pid);
if (ret_chk != 1) {
printf("tc_pthread_pthread_findjoininfo_destroyjoin pthread_equal fail\n");
g_bpthreadcallback = false;
goto err;
}
pthread_destroyjoin(group, st_pjoininfo);
st_pjoininfo = pthread_findjoininfo(group, pid);
if (st_pjoininfo != NULL) {
printf("pthread_findjoininfo: st_pjoininfo Fail \n");
g_bpthreadcallback = false;
goto err;
}
err:
pthread_exit(NULL);
return NULL;
}