I an writing a simple web server that receives web requests from an application (Scratch), which I want to process into commands and place in a queue. For the queue I'm trying to use a global array, then have a loop watching that queue to process when able. I can not get the global variables to work.

A cut down version of the code is:

package MyServer;
use warnings;
use strict;

use HTTP::Server::Simple::CGI;
use base qw(HTTP::Server::Simple::CGI);

our @command_queue;
sub handle_request {
    my ($self, $cgi) = @_;
    my $cmd_out;

        # Some processing here which populates $cmd_out
    push(@command_queue, $cmd_out);
    myDebug("Command queue has $#command_queue elements");
}

my $pid = MyServer->new($PORT)->background();
my $quit=0;
while($quit==0) {
        print "Commands in the queue = $#command_queue\n";
        sleep(1);
}

[download]

As each request comes in, the debugger reports the queue increasing in size, so command_queue is being maintained between calls to request_handler. However in the queue monitoring loop at the end, command_queue is constantly reported as empty, -1 in size.

How can I share data between the request_handler and another section of the program?

In reply to Global variables and SimpleHTTP request handler by Anonymous Monk

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