Read the documentation for sysread/syswrite.  They bypass buffered IO.

On Sat, Feb 15, 2014 at 4:02 AM, Victor Efimov <vic...@vsespb.ru> wrote:
> there is report
> http://www.cpantesters.org/cpan/report/b22f82c2-943c-11e3-b4bc-9b1944f7ffa7
>
> failure in this report cause by print() call returning EINTR.
> but it's not possible. perl protects buffered IO from Interrupts.
>
> please advice.



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