webmaster@[...].com <mailto:webmaster@[...].com>  wrote:
>  I'd love it if I could just upgrade perl, but corporate bureaucracy
>  sucks and the new versions need approval for security purposes.  I
>  initially tried it with 5.6.1 with less success, and 5.8.0 seems to
>  be very close less the is_running issue.  All I really need is some
>  way to determine if the thread is still running even if it's checking
>  if the process id exists. When it is, I want to SIGUSR1 the thread.  
>  
>  'threads' is a standard module, so I have no clue why it's having
>   amnesia. The module is found at C:/Perl/lib/threads.pm and not part
>  of the ppm. 
>  
>  Here is a short example of threads I'm testing:
>  
>  <xmp>
>  # Test Threads
>  use threads;
>  use threads::shared;
>  use strict;
>  use vars qw ($counter $thr);
>  
>  Log ("Starting Thread Test");
>  $thr = threads->create (\&ChildThread, 0, 1);
>  
>  $counter = 0;
>  while ($counter++ < 10) {
>     Log ("This is the main thread (".$counter." sec)");
>     sleep (1);
>  }
>  
>  # The following gives an error that is_running.al is missing.
>  # Tried threads->list (threads::running) to search and compare: gave
>  bareword error. # Tried "$thr->is_running" without success: also said
>  is_running.al missing. 
>  while ($thr->is_running()) {
>     Log ("Killing thread.");
>     $thr->kill('SIGUSR1');
>     sleep (4);
>  }
>  
>  Log ("Thread killed.");
>  
>  # Functions
>  
>  sub Log { my( $Message ) = @_; print $Message."\n"; }
>  
>  sub ChildThread {
>     my ($counter, $to_screen) = @_;
>     my $count = 0;
>     our $thread_term = 0;
>     $SIG{'SIGUSR1'} = sub { Log('Received user1 notice.');
>     $thread_term = 1; return 0; }; $SIG{'KILL'} = sub { Log('Received
>  kill notice.'); $thread_term = 1; return 0; }; 
>  
>     while (!($thread_term)) {
>        Log ('This is the child thread ('.($count++ * 2).' sec)');
>        sleep (2);
>     }
>     Log ('Thread has ended.');
>  }
>  </xmp>

It occurs to me that you might be using the documentation for a later
version of Perl than you are using. The function is_running is
documented in 5.10.0, but not in an older version (5.8.5) that I have.
Neither is the kill function come to that.

Try something like the following, which seems to work in my older
version.

use strict;
use warnings;
use threads;
use threads::shared;

my $thread_term : shared = 0;

Log ("Starting Thread Test");
my $thr = threads-> create (\&ChildThread, 0, 1);

my $counter = 0;
while ($counter++ < 10) {
   Log ("This is the main thread (".$counter." sec)");
   sleep (1);
}

terminate(1);
$thr-> join();
Log ("Thread killed.");

# Functions

sub Log { my( $Message ) = @_; print $Message."\n"; }

sub ChildThread {
   my ($counter, $to_screen) = @_;
   my $count = 0;

   while (!terminate()) {
      Log ('This is the child thread ('.($count++ * 2).' sec)');
      sleep (2);
   }
   Log ('Thread has ended.');
}

sub terminate {
    lock $thread_term;
    $thread_term = $_[0] if defined $_[0];
    return $thread_term;
}

HTH

-- 
Brian Raven 

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