Function thread_exit

kernel/generic/src/proc/thread.c:501–545

Terminate thread. * * End current thread execution and switch it to the exiting state. * All pending timeouts are executed. * */

 *
 */
void thread_exit(void)
{
	if (THREAD->uspace) {
#ifdef CONFIG_UDEBUG
		/* Generate udebug THREAD_E event */
		udebug_thread_e_event();

		/*
		 * This thread will not execute any code or system calls from
		 * now on.
		 */
		udebug_stoppable_begin();
#endif
		if (atomic_predec(&TASK->lifecount) == 0) {
			/*
			 * We are the last userspace thread in the task that
			 * still has not exited. With the exception of the
			 * moment the task was created, new userspace threads
			 * can only be created by threads of the same task.
			 * We are safe to perform cleanup.
			 *
			 */
			ipc_cleanup();
			sys_waitq_task_cleanup();
			LOG("Cleanup of task %" PRIu64 " completed.", TASK->taskid);
		}
	}

restart:
	irq_spinlock_lock(&THREAD->lock, true);
	if (THREAD->timeout_pending) {
		/* Busy waiting for timeouts in progress */
		irq_spinlock_unlock(&THREAD->lock, true);
		goto restart;
	}

	THREAD->state = Exiting;
	irq_spinlock_unlock(&THREAD->lock, true);

	scheduler();

	/* Not reached */
	while (true)
		;
}

/** Interrupts an existing thread so that it may exit as soon as possible.
 *