Function lwp_tid_dec_ref

components/lwp/lwp_tid.c:220–237

* @brief Decrement the reference count of a thread and potentially resume its suspender * * @param[in] thread The thread object whose reference count needs to be decremented * * @note This function safely decreases the reference count of a thread object. If the reference * count reaches zero and there is a suspender thread waiting (susp_recycler), it will * be resumed. */

 *       be resumed.
 */
void lwp_tid_dec_ref(rt_thread_t thread)
{
    rt_thread_t susp_putter;
    if (thread)
    {
        RT_ASSERT(rt_object_get_type(&thread->parent) == RT_Object_Class_Thread);
        susp_putter = thread->susp_recycler;
        lwp_mutex_take_safe(&tid_lock, RT_WAITING_FOREVER, 0);

        RT_ASSERT(thread->tid_ref_count > 0);
        thread->tid_ref_count -= 1;
        if (!thread->tid_ref_count && susp_putter)
        {
            rt_thread_resume(susp_putter);
        }
        lwp_mutex_release_safe(&tid_lock);
    }
}

/**
 * @brief Associate a thread with a given TID in the thread ID management system