Re: [PATCH 10/10] tools lib api: Adopt fdarray class from perf's evlist

[Namhyung Kim <namhyung@gmail.com>]

Hi Arnaldo,

On Fri, 22 Aug 2014 17:59:50 -0300, Arnaldo Carvalho de Melo wrote:
> +int fdarray__add(struct fdarray *fda, int fd)
> +{
> +	/*
> +	 * XXX: 64 is arbitrary, just not to call realloc at each fd.
> +	 *	Find a better autogrowing heuristic
> +	 */
> +	if (fda->nr == fda->nr_alloc &&
> +	    fdarray__grow(fda, 64) < 0)
> +		return -ENOMEM;
> +
> +	fcntl(fd, F_SETFL, O_NONBLOCK);
> +	fda->entries[fda->nr].fd = fd;
> +	fda->entries[fda->nr].events = POLLIN | POLLERR | POLLHUP;
> +	fda->nr++;
> +	return 0;
> +}

To be more generic api, I think it'd be better receiving events from
user rather than hard-coding.  Also it might be useful to let user
sets a grow hint (during init?) as well.

Thanks,
Namhyung