From: Wei Liu <wei.liu2@citrix.com>
To: Razvan Cojocaru <rcojocaru@bitdefender.com>
Cc: ian.jackson@eu.citrix.com, stefano.stabellini@eu.citrix.com,
wei.liu2@citrix.com, xen-devel@lists.xen.org
Subject: Re: [PATCH] tools/xenstore-watch: Add new timeout parameter
Date: Wed, 16 Mar 2016 18:46:50 +0000 [thread overview]
Message-ID: <20160316184650.GJ22103@citrix.com> (raw)
In-Reply-To: <1458143446-18346-1-git-send-email-rcojocaru@bitdefender.com>
On Wed, Mar 16, 2016 at 05:50:46PM +0200, Razvan Cojocaru wrote:
[...]
> }
>
> @@ -273,27 +274,49 @@ do_chmod(char *path, struct xs_permissions *perms, int nperms, int upto,
> }
>
> static void
> -do_watch(struct xs_handle *xsh, int max_events)
> +do_watch(struct xs_handle *xsh, int max_events, int timeout)
> {
> - int count = 0;
> + int rc, ms_timeout = timeout * 1000;
> char **vec = NULL;
> + struct pollfd fd;
>
> - for ( count = 0; max_events == -1 || count < max_events; count++ ) {
> - unsigned int num;
> + fd.fd = xs_fileno(xsh);
> + fd.events = POLLIN | POLLERR;
>
> - vec = xs_read_watch(xsh, &num);
> - if (vec == NULL)
> - continue;
> + do {
> + rc = poll(&fd, 1, 100);
>
> - printf("%s\n", vec[XS_WATCH_PATH]);
> - fflush(stdout);
> - free(vec);
> - }
> + if (rc == 0 || (rc < 0 && errno == EINTR)) {
> + ms_timeout -= 100;
Shouldn't you just exit the loop when getting EINTR?
And as others have mentioned, please also patch manpage.
Wei.
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next prev parent reply other threads:[~2016-03-16 18:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-16 15:50 [PATCH] tools/xenstore-watch: Add new timeout parameter Razvan Cojocaru
2016-03-16 17:43 ` Konrad Rzeszutek Wilk
2016-03-16 17:50 ` Andrew Cooper
2016-03-16 18:46 ` Wei Liu [this message]
2016-03-16 18:52 ` Razvan Cojocaru
2016-03-16 18:57 ` Wei Liu
2016-03-16 19:06 ` Razvan Cojocaru
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