AK7033, First you need an explanation. You're forking which means all variables are copied into their separate spaces. This means that when you shift the array, each forked process shifts their own copy of the array. That is why you think the array doesn't shrink. To correctly get the different file names in the array, I've used a variable called $arrayIterator which changes every time you fork. This will allow you to access the index in the array for that forked process. Happy coding!

use strict;
use warnings;

print "Begin Main\n";

## we store the child process in this array
my @childArray;

## path to the files go in this array. It could be one or a dozen
## and is determined by another process
our @fileArray = qw(fileone.txt filetwo.txt filethree.txt);

## This is the number of forks we will allow
my $forkCeiling = "5";

my $pid;
my $fileName;

for ( my $forkCount = 1; $forkCount <= $forkCeiling; $forkCount++) {
        my $arrayIterator = $forkCount-1;
        $pid = fork();
        if ($pid) {

        push(@childArray, $pid);
        } elsif ($pid == 0) {

                # call the download subroutine and pass the number of 
++forks, parent pid and array
                print "Sending fork number $forkCount to the \"process
+ files\" subroutine...\n";

                print $arrayIterator."\n";

                my $file = $fileArray[$arrayIterator];
                if(defined $file)
                {
                        print "DEBUG: $file \n";

                        #procFiles($forkCount, $$, $file);
                }
                 exit 0;


        }
}

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In reply to Re: assign variable and shift array by fidesachates
in thread assign variable and shift array by AK7033

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