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Date: Thu, 18 Jul 2002 12:50:48 -0700
To: "James Stevenson" <mistral@stev.org>,
       "Kevin Curtis" <kevin.curtis@farsite.co.uk>,
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From: "Maksim (Max) Krasnyanskiy" <maxk@qualcomm.com>
Subject: Re: Closing a socket
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> > I have implemented a new socket address family and have noted that
> > from a multi-threaded application, if a thread calls close(fd) while a
> > second thread has a blocking read outstanding, the sockets release() is not
> > called.  Is this correct?  How can one unblock the read in order to do the
> > close.
You might want to implement shutdown(). Thread #1 will call shutdown() 
instead of
the close(). Your shutdown() implementation can do something like:
         sk->shutdown |= RCV_SHUTDOWN;
         sk->state_change(sk);
So, reader will wakeup, check shutdown mask and return error because socket was
shut down.

Max


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