Hi tcarmeli,

Sure, why not declare the hash outside of the subroutine, so that its scope doesn't cause it to be garbage-collected?  You're obviously not using the hash anyway: 

#!/usr/bin/perl -w

use strict;
use warnings;

my  $func_done;
my  $func_return;

my $max=1000000;
my %myhash;

DoIt($max);
$func_return = (times)[0];
printf "Size of myhash is %d\n", 0 + keys %myhash;
printf "Return took %.4f CPU seconds\n", $func_return - $func_done;

sub DoIt{
        my $limit=shift;
        my $i;
        foreach $i (0..$limit){
            $myhash{$i}=1;
        }
        $func_done = (times)[0];
        return;
}

[download]

But it sounds like you may have an XY problem.  What is your real goal here?

s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

In reply to Re: Garbage collection at subroutine return by liverpole
in thread Garbage collection at subroutine return by tcarmeli

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