my %shared_data = (
            'dtLastRcvMsg' =>  time,
        'dummy2'       =>  33,
        'dummy'        =>  5
      );

    my ( $p1, $p2 );
    # 1° test : OK
    $p1 = \%shared_data;
    $self->mylog( "P1: ($p1) " . Dumper( $p1 ));

    # 2° test : OK
    $p2 = $p1;
    $self->mylog( "P2: ($p2)" . Dumper( $p2 ));

    # 3° test : NOT-OK
    $self->{'shared_data'} = $p1;
    $p2 = $self->{'shared_data'};
    $self->mylog( "P2: ($p2)" . Dumper( $p2 ));

##</code><code>##

c:\test\691728>..\junk.pl
..Non posso aprire il file /var/log/www/test1.dat (No such file or directory)
print() on closed filehandle F at c:\test\junk.pl line 105.
[2008.6.17 13:39:5] pid=2032 P1: (HASH(0x1e74f40)) $VAR1 = {
          'dummy2' => 33,
          'dummy' => 5,
          'dtLastRcvMsg' => 1213706345
        };

..Non posso aprire il file /var/log/www/test1.dat (No such file or directory)
print() on closed filehandle F at c:\test\junk.pl line 105.
[2008.6.17 13:39:5] pid=2032 P2: (HASH(0x1e74f40))$VAR1 = {
          'dummy2' => 33,
          'dummy' => 5,
          'dtLastRcvMsg' => 1213706345
        };

..Non posso aprire il file /var/log/www/test1.dat (No such file or directory)
print() on closed filehandle F at c:\test\junk.pl line 105.
[2008.6.17 13:39:5] pid=2032 P2: (HASH(0x1e74f40))$VAR1 = {
          'dummy2' => 33,
          'dummy' => 5,
          'dtLastRcvMsg' => 1213706345
        };

##</code><code>##

#!/usr/bin/perl -w
#
package Test1;
  use strict;
  use warnings;
  use utf8;
  use CGI;
#  use HTTP::Lite;
  use HTTP::Request;
  use LWP::UserAgent;
  use XML::Simple;
  use XML::DOM;
#  use Tie::File::AsHash;
  use IO::Socket;
  use Sys::Hostname;
#  use IPC::Shareable;
  use Data::Dumper;

my ( $fileTie ) = '/var/log/www/benzopmvutil.dat';
my ( $log_filename ) = '/var/log/www/test1.dat';

my %conf_data = ( 'test1' => 'abc' , 'test2' => '123');
my $test = Test1->new( \%conf_data );

# ================================================
# ================================================
sub new
{
    my $that   = shift;
    my $params = shift;
    my $class = ref($that) || $that;
    my $self = {};

    bless($self, $class);

#    tie %$self, 'Tie::File::AsHash', $fileTie, split => '='  or die "Problem tying %$self: $!";

    $self->{counter} += 1;
    if( $self->{counter}  > 9999 ) { $self->{counter} = 1;  }
    $self->{last_call} = scalar localtime;

    my $s1 = Dumper( $self );

    my %ipcshare_options = (
          key        => 'benz',
          create     => 1,
      exclusive  => 0,
      mode       => 0666,
      destroy    => 0,
#      size       => IPC::Shareable::SHM_BUFSIZ()
    );

    my %shared_data = (
            'dtLastRcvMsg' =>  time,
        'dummy2'       =>  33,
        'dummy'        =>  5
      );

    my ( $p1, $p2 );
    # 1° test : OK
    $p1 = \%shared_data;
    $self->mylog( "P1: ($p1) " . Dumper( $p1 ));

    # 2° test : OK
    $p2 = $p1;
    $self->mylog( "P2: ($p2)" . Dumper( $p2 ));

    # 3° test : NOT-OK
    $self->{'shared_data'} = $p1;
    $p2 = $self->{'shared_data'};
    $self->mylog( "P2: ($p2)" . Dumper( $p2 ));


    $p2->{'dtLastRcvMsg'} = time;


#    tie $self->{shared_data}, 'IPC::Shareable', { %ipcshare_options } or
    tie %shared_data, 'IPC::Shareable', { %ipcshare_options } or
                     die "[BenzoPmvUtil::init] shreable tie FAILED ( $! ) ";

    my $ppp = ( tied %shared_data );
    # mylog( "TIED: ($!) " . Data::Dumper( \$ppp ));
    mylog( "SHMEM-ID: " . $ppp->{_shm}->{_id} );
    #mylog( "IPC::Shareable::SHM_BUFSIZ: " . IPC::Shareable::SHM_BUFSIZ() );

    return $self;
}




# =============================================
sub mylog
{
    my $self  = shift;
    my( $strmsg ) = @_;
    my( $stmp, $sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst );

    if( ! defined($log_filename)) { return };
    ( $sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst ) = localtime(time);
    $year += 1900;
    $mon  += 1;

    open( F, ">>$log_filename" ) or open( F, ">$log_filename" ) or warn "..Non posso aprire il file $log_filename ($!) \n";
    print F "[$year.$mon.$mday $hour:$min:$sec] pid=$$ $strmsg) \n";
    warn "[$year.$mon.$mday $hour:$min:$sec] pid=$$ $strmsg \n";

    close F;
}