On Thu, Aug 5, 2010 at 2:13 PM, Mark Ellzey <mtho...@strcpy.net> wrote:
>
> This is an odd question that hopefully someone can help me out with. I
> have a function right now that looks a bit like this:
>
> void
> read_data(struct bufferevent *bev, void *args) {
> evbuffer *data;
>
> data = bufferevent_get_input(bev)
>
> if (evbuffer_get_length(data) < some_size) {
> /* waiting for some specific amount of data */
> return;
>
> .... process data here ....
>
> evbuffer_drain(data, some_size);
>
> if (evbuffer_get_length(data)) {
> return read_data(bev, args);
> }
> }
>
> If more data is present at the time it has finished reading one block of
> data it was interested in, if you were to return, you never get notified
> unless something was added.
Right. The read callback is invoked when more data *arrives,* not
whenever there is data.
If you want it to handle all the data, why not just use a loop:
while (evbuffer_get_length(data) >= some_size) {
/* ... */
}
That way you avoid the arbitrary recursion.
--
Nick
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