my $shared_memory_segment_created = 0;

while (! $shared_memory_segment_created) {
    $shared_memory_segment_created = eval {
        tie %events, 'IPC::Shareable', {
            key         => _rand_shm_key(),
            create      => 1,
            exclusive   => 1,
            protected   => _shm_lock(),
            mode        => 0600,
            destroy     => 1
        };
        1;
    };
}