Re: select() hanging after terminal killed

[Matthias Andree <matthias.andree@gmx.de>]

Am 29.04.2010 12:53, schrieb Thomas Wolff:

[on closed terminal]
> On Linux, select() indicates an exception and EIO.
> On SunOS, select() indicates both an exception and input (weird),

Not weird, you appear to be misunderstanding select().
An IEEE Std 1003.1 compliant select():

 - only states that a subsequent read() will *not block*
   this includes EOF and error, as they make read() return without blocking)

 - makes *no statements about success*

> On Cygwin, the following is observed:
> * EOF is not signalled on read(); rather EIO is indicated right away.
>   (Maybe not too bad, an application can handle that as well.)
> * select() with timeout hangs.
> 
> Especially the latter can hardly be handled by an application.

Pointers for workarounds: alarm(), signal().

-- 
Matthias Andree

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