I am trying to use threads while assigning an array to a hash and another array to a hash of hash.

#!/usr/bin/Perl

use strict;
use threads;
use threads::shared;

my %hash :shared;
my %hash1 :shared;

my $a = "abcdef";
my $b = "ghighi";

my $len = length($a)-2;

# Define the number of threads
my $num_of_threads = 2;

# use the initThreads subroutine to create an array of threads.
my @threads = initThreads();

# Loop through the array:
foreach(@threads){
                # Tell each thread to perform our 'doOperation()' subr
+outine.
        $_ = threads->create(\&doOperation);
}

# This tells the main program to keep running until all threads have f
+inished.
foreach(@threads){
    $_->join();
}

print "\nProgram Done!\nPress Enter to exit";
$a = <>;

####################### SUBROUTINES ############################
sub initThreads{
    my @initThreads;
    for(my $i = 1;$i<=$num_of_threads;$i++){
        push(@initThreads,$i);
    }
    return @initThreads;
}
sub doOperation{
    # Get the thread id. Allows each thread to be identified.
    my $id = threads->tid();
    my $i = 0;

    while($i < 2)
    {
    
        my $split = substr($a, $i, $len);
        my $split1 = substr($b, $i, $len);
        
        my $affix = substr($split, 0, $len-1);
        my $postfix = substr($split, 1, $len-1); 
        my $affix1 = substr($split1, 0, $len-1);
        my $postfix1 = substr($split1, 1, $len-1); 

    print "$affix\t$postfix\n";
            
        lock(%hash);
        #lock(%hash1); 
        
        $hash{$affix} = threads::shared::shared_clone([$affix1]);
    print "$hash{$affix}\n";
        #$hash1{$affix}{$postfix} = threads::shared::shared_clone([$af
+fix1]); This is where the problem is. How can I assign an array to a 
+hash of hash
    
        $i++
    }
    print "Thread $id done!\n";
    # Exit the thread
    threads->exit();
}

Thread 1 terminated abnormally: Invalid value for shared scalar.
[download]

How can I assign an array to a hash of hash when using threads.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.