static inline void task_signalparent(FAR struct tcb_s *ctcb, int status)
{
#ifdef HAVE_GROUP_MEMBERS
DEBUGASSERT(ctcb && ctcb->group);
/* Keep things stationary throughout the following */
sched_lock();
/* Send SIGCHLD to all members of the parent's task group */
task_sigchild(ctcb->group->tg_pgid, ctcb, status);
sched_unlock();
#else
FAR struct tcb_s *ptcb;
/* Keep things stationary throughout the following */
sched_lock();
/* Get the TCB of the receiving, parent task. We do this early to
* handle multiple calls to task_signalparent. ctcb->ppid is set to an
* invalid value below and the following call will fail if we are
* called again.
*/
ptcb = sched_gettcb(ctcb->ppid);
if (!ptcb)
{
/* The parent no longer exists... bail */
sched_unlock();
return;
}
/* Send SIGCHLD to all members of the parent's task group */
task_sigchild(ptcb, ctcb, status);
/* Forget who our parent was */
ctcb->ppid = INVALID_PROCESS_ID;
sched_unlock();
#endif
}
void task_exithook(FAR _TCB *tcb, int status)
{
/* If exit function(s) were registered, call them now before we do any un-
* initialization. NOTE: In the case of task_delete(), the exit function
* will *not* be called on the thread execution of the task being deleted!
*/
task_atexit(tcb);
/* Call any registered on_exit function(s) */
task_onexit(tcb, status);
/* Send SIGCHLD to the parent of the exit-ing task */
task_sigchild(tcb, status);
/* Wakeup any tasks waiting for this task to exit */
task_exitwakeup(tcb, status);
/* Flush all streams (File descriptors will be closed when
* the TCB is deallocated).
*/
#if CONFIG_NFILE_STREAMS > 0
(void)lib_flushall(tcb->streams);
#endif
/* Discard any un-reaped child status (no zombies here!) */
#if defined(CONFIG_SCHED_HAVE_PARENT) && defined(CONFIG_SCHED_CHILD_STATUS)
task_removechildren(tcb);
#endif
/* Free all file-related resources now. This gets called again
* just be be certain when the TCB is delallocated. However, we
* really need to close files as soon as possible while we still
* have a functioning task.
*/
(void)sched_releasefiles(tcb);
/* Deallocate anything left in the TCB's queues */
#ifndef CONFIG_DISABLE_SIGNALS
sig_cleanup(tcb); /* Deallocate Signal lists */
#endif
}