use threads;
use threads::shared;

my @threads;

for(my $index = 0; $index < scalar(@input_files); $index++)
{
         push(@threads, threads->new(\&doProcessing, $input,$output));	#$input and $output are the contents of input and output files
}	

my @ReturnData;

foreach my $thread (@threads)
{
	push(@ReturnData,$thread->join());
	
}