Re: Process file simultaneously after forking

My problem is how to orchestrate the distribution of the textfile so that the parent grabs a line, the child grabs the next line and so on to EOF.

I've looked into perlipc but am not sure which strategy will work.

You don't say how big/complex the textfile is. Two ways that spring to mind - and which don't require any IPC - are to run a prefilter on the file. You could either just copy the file and then - depending on whether it was the forker or forkee read the odd/even lines. Or you could just slurp the entire file into an array and then use some cuuning manipulations to extract every other line. Something like

 
my (@odd, @even);
map { if($.&1){ push @odd,$_;} else { push @even,$_ } } while(<FILE>);
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Dingus

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Re^2: Process file simultaneously after forking by Aristotle (Chancellor) on Nov 15, 2002 at 16:34 UTC
Or more succintly, `my (@odd, @even); push @{ $. & 1 ? \@odd : \@even }, $_ while <FILE>;` [download] Makeshifts last the longest.	[reply] [d/l]