> -----Original Message-----
> From: Xie, Huawei
> Sent: Friday, March 06, 2015 5:52 AM
> To: dev at dpdk.org
> Cc: Ananyev, Konstantin; Xie, Huawei
> Subject: [PATCH] lib/librte_vhost: combine select with sleep
>
> combine sleep into select when there is no file descriptors to be monitored.
>
> Signed-off-by: Huawei Xie <huawei.xie at intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
> ---
> lib/librte_vhost/vhost_user/fd_man.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/lib/librte_vhost/vhost_user/fd_man.c
> b/lib/librte_vhost/vhost_user/fd_man.c
> index 63ac4df..a89b6fe 100644
> --- a/lib/librte_vhost/vhost_user/fd_man.c
> +++ b/lib/librte_vhost/vhost_user/fd_man.c
> @@ -211,25 +211,26 @@ fdset_event_dispatch(struct fdset *pfdset)
> void *dat;
> int fd;
> int remove1, remove2;
> + int ret;
>
> if (pfdset == NULL)
> return;
>
> while (1) {
> + struct timeval tv;
> + tv.tv_sec = 1;
> + tv.tv_usec = 0;
> FD_ZERO(&rfds);
> FD_ZERO(&wfds);
> pthread_mutex_lock(&pfdset->fd_mutex);
>
> maxfds = fdset_fill(&rfds, &wfds, pfdset);
> - if (maxfds == -1) {
> - pthread_mutex_unlock(&pfdset->fd_mutex);
> - sleep(1);
> - continue;
> - }
>
> pthread_mutex_unlock(&pfdset->fd_mutex);
>
> - select(maxfds + 1, &rfds, &wfds, NULL, NULL);
> + ret = select(maxfds + 1, &rfds, &wfds, NULL, &tv);
> + if (ret <= 0)
> + continue;
>
> for (i = 0; i < num; i++) {
> remove1 = remove2 = 0;
> --
> 1.8.1.4
