Re: PROBLEM: I/O system call never returns if file desc is closed

Alexander Viro (viro@math.psu.edu)
Thu, 7 Jun 2001 00:43:41 -0400 (EDT)


On 7 Jun 2001, Florian Weimer wrote:

> Matthias Urlichs <smurf@noris.de> writes:
>
> > Select is defined as to return, with the appropriate bit set, if/when
> > a nonblocking read/write on the file descriptor won't block. You'd get
> > EBADF in this case, therefore causing the select to return would be a
> > Good Thing.
>
> How do you avoid race conditions if more than one thread is creating
> file descriptors? I think you can only do that under very special
> circumstances, and it definitely requires some synchronization.

The same way as you do it for many threads doing any allocations.

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