Re: [PATCH 14/20] Use GQueue for RedCharDevice::send_queue

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On Fri, Apr 15, 2016 at 03:01:37PM -0500, Jonathon Jongsma wrote:
> > @@ -394,21 +376,17 @@ static int
> > red_char_device_read_from_device(RedCharDevice *dev)
> >  
> >  static void red_char_device_client_send_queue_push(RedCharDeviceClient
> > *dev_client)
> >  {
> > -    RingItem *item;
> > -    while ((item = ring_get_tail(&dev_client->send_queue)) &&
> > -           red_char_device_can_send_to_client(dev_client)) {
> > -        RedCharDeviceMsgToClientItem *msg_item;
> > -
> > -        msg_item = SPICE_CONTAINEROF(item, RedCharDeviceMsgToClientItem,
> > link);
> > -        ring_remove(item);
> > -
> > +    while (!g_queue_is_empty(dev_client->send_queue)) {
> > +        GList *msg;
> 
> GList* ?? Doesn't this GQueue contain PipeItem*? 
> 
> > +        if (!red_char_device_can_send_to_client(dev_client)) {
> > +            break;
> > +        }
> > +        msg = g_queue_pop_tail(dev_client->send_queue);
> > +        g_assert(msg != NULL);
> >          dev_client->num_send_tokens--;
> > -        red_char_device_send_msg_to_client(dev_client->dev,
> > -                                           msg_item->msg,
> > +        red_char_device_send_msg_to_client(dev_client->dev, msg->data,
> 
> I think the second argument should simply be 'msg' instead of 'msg->data', no? I
> wonder why it works...
> 
> >                                             dev_client->client);
> > -        pipe_item_unref(msg_item->msg);
> > -        dev_client->send_queue_size--;
> > -        free(msg_item);
> > +        pipe_item_unref(msg);
> 
> 
> ...and here, we free this GList* variable by calling pipe_item_unref(). That's
> one of the pitfalls of making pipe_item_unref() accept a gpointer argument --
> the compiler didn't warn us...

Yes, looks like I got this hunk wrong. I must say that for most of these
changes, I did not go further than trying compilation, I did not
carefullly test them, so I'm not surprised to find such bugs :(
Might be better to delay merging some of these patches until I tested
them more carefully ;)

Christophe

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