From: Huajun Li <huajun.li.lee@gmail.com>
To: ZHOU Xiaobo <xb.zhou@qq.com>
Cc: netdev <netdev@vger.kernel.org>
Subject: Re: write() udp socket
Date: Sun, 24 Jul 2011 16:33:10 +0800 [thread overview]
Message-ID: <CA+v9cxZAF27mXc6aCEPyOdqbeLved3_xibvDS4TQugHR=7owPg@mail.gmail.com> (raw)
In-Reply-To: <tencent_287F494544728EDB6DA9C8ED@qq.com>
2011/7/23 ZHOU Xiaobo <xb.zhou@qq.com>:
> question No1:
> When I call
> ssize_t write(int fd, const void *buf, size_t count);
>
>
> on a nonblocking UDP socket, is the return value always equal to 'count'?
>
>
I don't think so. The function may be interrupt by signal or return
due to other reason, so the return value only represents the size it
writes successfully to the fd.
> question No2:
> Can I write() a UDP socket in multiple threads without locking?
>
In my opinion, you could. However, the receiver may not get what you expected.
>
> thanks
>
>
> ------------------
> Sincerely yours
> ZHOU Xiaobo
next prev parent reply other threads:[~2011-07-24 8:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-23 9:29 write() udp socket ZHOU Xiaobo
2011-07-24 8:33 ` Huajun Li [this message]
2011-07-25 17:38 ` Rick Jones
-- strict thread matches above, loose matches on Subject: below --
2011-07-26 5:32 ZHOU Xiaobo
2011-07-26 5:39 ZHOU Xiaobo
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