Function lwp_pid_put

components/lwp/lwp_pid.c:316–336

* @brief Release a process ID and clean up associated resources * * @param[in,out] lwp The lightweight process whose PID should be released */

 * @param[in,out] lwp The lightweight process whose PID should be released
 */
void lwp_pid_put(struct rt_lwp *lwp)
{
    _free_proc_dentry(lwp);

    lwp_pid_lock_take();
    lwp_pid_put_locked(lwp->pid);
    if (lwp_pid_root == AVL_EMPTY)
    {
        rt_wqueue_wakeup_all(&_pid_emptyq, RT_NULL);
        /* refuse any new pid allocation now */
    }
    else
    {
        lwp_pid_lock_release();
    }

    /* reset pid field */
    lwp->pid = 0;
    /* clear reference */
    lwp_ref_dec(lwp);
}

/**
 * @brief Set the LWP for a given PID while holding the PID lock