Function rt_pipe_delete

components/drivers/ipc/pipe.c:684–724

* @brief This function will delete a pipe device. * The system will release the pipe handle and unregister the pipe device from the system. * * @param pipe is the pointer to the pipe device. * * @return Return the operation status. * When the return value is 0, it means the operation is successful. * When the return value is -RT_EINVAL, it means the pip

 *           When the return value is -RT_EBUSY, it means the pipe device is busy.
 */
int rt_pipe_delete(const char *name)
{
    int result = 0;
    rt_device_t device;

    device = rt_device_find(name);
    if (device)
    {
        if (device->type == RT_Device_Class_Pipe)
        {
            rt_pipe_t *pipe;

            pipe = (rt_pipe_t *)device;

            rt_condvar_detach(&pipe->waitfor_parter);
            rt_mutex_detach(&pipe->lock);
#if defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_POSIX_PIPE)
            resource_id_put(&id_mgr, pipe->pipeno);
#endif
            rt_device_unregister(device);

            /* close fifo ringbuffer */
            if (pipe->fifo)
            {
                rt_ringbuffer_destroy(pipe->fifo);
                pipe->fifo = RT_NULL;
            }
            rt_free(pipe);
        }
        else
        {
            result = -ENODEV;
        }
    }
    else
    {
        result = -ENODEV;
    }

    return result;
}

#if defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_POSIX_PIPE)
/**