Function lwp_thread_exit

components/lwp/lwp_pid.c:913–947

* @brief Handles thread exit for a lightweight process * * @param[in,out] thread The thread that is exiting * @param[in] status The exit status to set for the thread * * @note For MMU architectures, this function checks if the exiting thread is the * header thread (main thread). If so, it treats it as a process exit. */

 *       header thread (main thread). If so, it treats it as a process exit.
 */
void lwp_thread_exit(rt_thread_t thread, int status)
{
    rt_thread_t header_thr;
    struct rt_lwp *lwp;

    LOG_D("%s", __func__);

    RT_ASSERT(thread == rt_thread_self());
    lwp = (struct rt_lwp *)thread->lwp;
    RT_ASSERT(lwp != RT_NULL);

#ifdef ARCH_MM_MMU
    _clear_child_tid(thread);

    LWP_LOCK(lwp);
    header_thr = rt_list_entry(lwp->t_grp.prev, struct rt_thread, sibling);
    if (header_thr == thread && thread->sibling.prev == &lwp->t_grp)
    {
        /**
         * if thread exit, treated as process exit normally.
         * This is reasonable since trap event is exited through lwp_exit()
         */
        lwp->lwp_status = LWP_CREATE_STAT_EXIT(status);
        LWP_UNLOCK(lwp);

        lwp_terminate(lwp);
    }
    else
    {
        LWP_UNLOCK(lwp);
    }
#endif /* ARCH_MM_MMU */

    _thread_exit(lwp, thread);
}

/**
 * @brief Increments the reference count of a lightweight process