Problem enumerating a foreach loop using Win32::OLE->GetObject

[t_rex_joe]

Perl Monks,
I seek your knowledge and wisdom again.

This time pertaining to enumerating WIN32::OLE response.

The issue is finding a timeout/hung session when retrieving
the win32 information (wmic) from a remote machine.

The code below is step by step, the failure does not occur until near the
bottom. I included this code for FYI.

  eval 
    {
    local $SIG{ALRM} = sub { warn "ALARM FOR GET WMIC L: \"" . __LINE_
+_ . "\" F: \"" . __FILE__ . "\"\n" }; # NB: \n required
    alarm 10;
    $wmicon = Win32::OLE->GetObject('winmgmts:' . '{impersonationLevel
+=impersonate, authenticationLevel=pkt}!\\\\' . $host . '\\root\\CIMV2
+\sms')
    or $ok = 0;
    alarm 0;
    };
   if($@){ $err = 1; $ret = "timeout while accessing wmi on machine $h
+ost"; return($err, $ret); }
    else { }  # didn't

The code above works as desired when a machine is offline,
the alarm feature is not the issue

    $col = undef;
    eval 
      {
      local $SIG{ALRM} = sub { warn "ALARM FOR GET EXEC QUERY: \"$quer
+y\" L: \"" . __LINE__ . "\" F: \"" . __FILE__ . "\"\n" }; # NB: \n re
+quired
      alarm 5;
      $col = $wmicon->ExecQuery($query, "WQL", wbemFlagReturnImmediate
+ly | wbemFlagForwardOnly | WbemAuthenticationLevelPkt)
         or $ok = 0;
      alarm 0;
      };
     if($@){ $err = 1; $ret = "timeout while QUERY: \"$query\" wmi on 
+machine $host"; return($err, $ret); }
      else { }  # didn't
    if($ok == 0) { $err = 1; $ret = clean(Win32::OLE->LastError); retu
+rn($err, $ret); }

The code above works as expected

    $objct = 0; $enabled = 0;
    $obj = undef;
    foreach $obj (in $col) 
      {
      my $delete = 0;
      if($debug == 1) { print "\tOBJ: \"$obj\" L: \"" . __LINE__ . "\"
+\n"; }

      }

This code is where the problem occurs.

I dont understand what the "foreach $obj (in $col)"
actually does/executes on the back end.
Why not use "foreach $obj (keys % { $col })".
This does not work.

I need to trap/eval the "foreach $obj (in $col)",
to test for failure then exit/return. currently
when this hangs, the script stops until i kill it manually.

"$col" is a hash, however when I move this
scalar to a hash with

  my %colhash = % { $col };
  if($debug == 1) { print "DUMP COLHASH: \"" . Dumper(%colhash) . "\" 
+L: \"" . __LINE__ . "\"\n"; }

The actual value is not the same as using the "foreach $obj (in $col)".
What is the difference in the "foreach" styles?



TIA,

Joe

P.S. I will sweeten the pot by honoring a single item
from a amazon wishlist (NOT GT $30USD).