When i first saw this i wondered what select was doing in there, with empty texts for RBITS,WBITS,EBITS even. Then i realized it was just a sub-second sleep. is that correct?

Second i wondered what empty text strings would do to select. Didnt try it, but http://perldoc.perl.org/functions/select.html suggests this select(undef, undef, undef, 0.001); instead.

In reply to Re^2: Shared memory and asynchronous access by huck
in thread Shared memory and asynchronous access by vef445

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