Function _suspend_thread_locked

components/lwp/lwp_futex.c:475–485

* @brief Add current thread into futex waiting thread list * * @param[in] thread The thread to be suspended * @param[in] futex The futex to add thread to waiting list * * @return rt_err_t Returns RT_EOK on success or error code on failure */

 * @return rt_err_t Returns RT_EOK on success or error code on failure
 */
static rt_err_t _suspend_thread_locked(rt_thread_t thread, rt_futex_t futex)
{
    /**
     * Brief: Add current thread into futex waiting thread list
     *
     * Note: Critical Section
     * - the futex waiting_thread list (RW)
     */
    return rt_thread_suspend_to_list(thread, &futex->waiting_thread,
                                     RT_IPC_FLAG_FIFO, RT_INTERRUPTIBLE);
}

/**
 * @brief Compare and exchange futex value atomically