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From: Nicolas Cannasse <ncannasse@motion-twin.com>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: linux-net@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: recv() hangs until SIGCHLD ?
Date: Mon, 13 Oct 2008 17:02:41 +0200	[thread overview]
Message-ID: <48F36311.5030303@motion-twin.com> (raw)
In-Reply-To: <48F30772.7040207@motion-twin.com>

Nicolas Cannasse a écrit :
>>> If there is data and the thread didn't wake up then that is a libc or 
>>> kernel problem;
>>> but if there is no data, then look for cases where earlier 
>>> interrupted io actually
>>> consumed the data already or blame the sending process not the receiver.
>>> Also are the sockets blocking or non-blocking?

One other thing :

We tried to use a poll(POLLIN) on the socket before entering the recv(). 
The poll() does exit (and we are looping in case of EINTR result) but 
after that recv() blocks infinitely.

Hope that helps,

Nicolas


  reply	other threads:[~2008-10-13 15:03 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-10 13:30 recv() hangs until SIGCHLD ? Nicolas Cannasse
2008-10-10 19:17 ` Stephen Hemminger
2008-10-11  8:28   ` Nicolas Cannasse
2008-10-11 12:20     ` David Schwartz
2008-10-12 15:47       ` Stephen Hemminger
2008-10-13  8:31     ` Nicolas Cannasse
2008-10-13 15:02       ` Nicolas Cannasse [this message]
  -- strict thread matches above, loose matches on Subject: below --
2008-10-10 16:43 Nicolas Cannasse
2008-10-11  4:48 ` David Schwartz
2008-10-11  9:30   ` Samuel Thibault

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