* [dpdk-dev] [PATCH] lib/librte_vhost: use loop instead of goto
@ 2015-03-06 5:52 Huawei Xie
2015-03-06 10:04 ` Ananyev, Konstantin
0 siblings, 1 reply; 3+ messages in thread
From: Huawei Xie @ 2015-03-06 5:52 UTC (permalink / raw)
To: dev
This patch reorder the code a bit to use loop instead of goto.
Besides, remove abudant check 'fd != -1'.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
---
lib/librte_vhost/vhost_user/fd_man.c | 26 +++++++++++---------------
1 file changed, 11 insertions(+), 15 deletions(-)
diff --git a/lib/librte_vhost/vhost_user/fd_man.c b/lib/librte_vhost/vhost_user/fd_man.c
index a89b6fe..831c9c1 100644
--- a/lib/librte_vhost/vhost_user/fd_man.c
+++ b/lib/librte_vhost/vhost_user/fd_man.c
@@ -172,23 +172,19 @@ fdset_del(struct fdset *pfdset, int fd)
if (pfdset == NULL || fd == -1)
return;
-again:
- pthread_mutex_lock(&pfdset->fd_mutex);
+ do {
+ pthread_mutex_lock(&pfdset->fd_mutex);
- i = fdset_find_fd(pfdset, fd);
- if (i != -1 && fd != -1) {
- /* busy indicates r/wcb is executing! */
- if (pfdset->fd[i].busy == 1) {
- pthread_mutex_unlock(&pfdset->fd_mutex);
- goto again;
+ i = fdset_find_fd(pfdset, fd);
+ if (i != -1 && pfdset->fd[i].busy == 0) {
+ /* busy indicates r/wcb is executing! */
+ pfdset->fd[i].fd = -1;
+ pfdset->fd[i].rcb = pfdset->fd[i].wcb = NULL;
+ pfdset->num--;
+ i = -1;
}
-
- pfdset->fd[i].fd = -1;
- pfdset->fd[i].rcb = pfdset->fd[i].wcb = NULL;
- pfdset->num--;
- }
-
- pthread_mutex_unlock(&pfdset->fd_mutex);
+ pthread_mutex_unlock(&pfdset->fd_mutex);
+ } while (i != -1);
}
/**
--
1.8.1.4
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [dpdk-dev] [PATCH] lib/librte_vhost: use loop instead of goto
2015-03-06 5:52 [dpdk-dev] [PATCH] lib/librte_vhost: use loop instead of goto Huawei Xie
@ 2015-03-06 10:04 ` Ananyev, Konstantin
2015-03-09 8:28 ` Thomas Monjalon
0 siblings, 1 reply; 3+ messages in thread
From: Ananyev, Konstantin @ 2015-03-06 10:04 UTC (permalink / raw)
To: Xie, Huawei, dev
> -----Original Message-----
> From: Xie, Huawei
> Sent: Friday, March 06, 2015 5:53 AM
> To: dev@dpdk.org
> Cc: Ananyev, Konstantin; Xie, Huawei
> Subject: [PATCH] lib/librte_vhost: use loop instead of goto
>
> This patch reorder the code a bit to use loop instead of goto.
> Besides, remove abudant check 'fd != -1'.
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
>
> Signed-off-by: Huawei Xie <huawei.xie@intel.com>
> ---
> lib/librte_vhost/vhost_user/fd_man.c | 26 +++++++++++---------------
> 1 file changed, 11 insertions(+), 15 deletions(-)
>
> diff --git a/lib/librte_vhost/vhost_user/fd_man.c b/lib/librte_vhost/vhost_user/fd_man.c
> index a89b6fe..831c9c1 100644
> --- a/lib/librte_vhost/vhost_user/fd_man.c
> +++ b/lib/librte_vhost/vhost_user/fd_man.c
> @@ -172,23 +172,19 @@ fdset_del(struct fdset *pfdset, int fd)
> if (pfdset == NULL || fd == -1)
> return;
>
> -again:
> - pthread_mutex_lock(&pfdset->fd_mutex);
> + do {
> + pthread_mutex_lock(&pfdset->fd_mutex);
>
> - i = fdset_find_fd(pfdset, fd);
> - if (i != -1 && fd != -1) {
> - /* busy indicates r/wcb is executing! */
> - if (pfdset->fd[i].busy == 1) {
> - pthread_mutex_unlock(&pfdset->fd_mutex);
> - goto again;
> + i = fdset_find_fd(pfdset, fd);
> + if (i != -1 && pfdset->fd[i].busy == 0) {
> + /* busy indicates r/wcb is executing! */
> + pfdset->fd[i].fd = -1;
> + pfdset->fd[i].rcb = pfdset->fd[i].wcb = NULL;
> + pfdset->num--;
> + i = -1;
> }
> -
> - pfdset->fd[i].fd = -1;
> - pfdset->fd[i].rcb = pfdset->fd[i].wcb = NULL;
> - pfdset->num--;
> - }
> -
> - pthread_mutex_unlock(&pfdset->fd_mutex);
> + pthread_mutex_unlock(&pfdset->fd_mutex);
> + } while (i != -1);
> }
>
> /**
> --
> 1.8.1.4
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-03-06 5:52 [dpdk-dev] [PATCH] lib/librte_vhost: use loop instead of goto Huawei Xie
2015-03-06 10:04 ` Ananyev, Konstantin
2015-03-09 8:28 ` Thomas Monjalon
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