#!/usr/bin/perl -w
# sharetest - test shared variables across forks
use lib "/home/samir/shmem/lib/lib";
use lib "/home/samir/shmem/lib/lib64";
use lib "/home/samir/shmem/lib/lib/perl5/site_perl/";
use IPC::Shareable;

my @buffer;
my @array1;
my @array2;

my $glue = 'data';
my %options = (
    create    => 'yes',
     exclusive => 0,
     mode      => 0644,
     destroy   => 'yes',
);
$handle = tie @array1, 'IPC::Shareable', $glue, { destroy => 1 };
$handle2 = tie @array2, 'IPC::Shareable', $glue, { destroy => 1 };

$SIG{INT} = sub { die "$$ dying\n" };

for (1 .. 10) {
    unless ($child = fork) {        # i'm the child
        die "cannot fork: $!" unless defined $child;
        squabble();
        exit;
    }
    push @kids, $child;  # in case we care about their pids
}
while (1) {
    print "array1: is @array1\n";
    print "array2: is @array2\n";
    sleep 1;
}
die "Not reached";

sub squabble {
    my $i = 0;
    while (1) {
        $handle->shlock();
        $i++;
        @array1=();
        push (@array1, "$i");
        $handle->shunlock();

#        $handle2->shlock();
#       @array2=();
#       push (@array2, "$i++");
#        $handle2->shunlock();
    }
}

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problem is array1 and array2 have same results eventhough array2 is not update.

...

[download]

I'm trying to use two arrays to one for the parent to update and the other for childerns to update.

been trying for a week now.

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In reply to using tie on two arrays on IPC::Shareable makes array1 and array2 both same even though array2 is not updated. by mr_p

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