Hello,

First I want to say thank you for this thread http://www.perlmonks.org/?node_id=470827. I tried the example of BrowserUk.

It is working with Linux and Windows. Then I added a cancel button which kills the external process. It is working in windows, but in my ubuntu linux the process is NOT killed. Why?

Here the code:

#!perl -slw
use strict;
use threads;
use threads::shared;
use Thread::Queue;

## A shared var to communicate progess between work thread and TK
my $Q = new Thread::Queue;
my $pid:shared;

sub work{
    $pid = open PROC, 
    'perl -le"$|=1; print and select(undef,undef,undef,0.1) for 1 .. 1
+000" |'
        or die $!;
    while( <PROC> ) {
        $Q->enqueue( $_ );
    }
    close PROC;
}

threads->new( \&work )->detach;

use Tk;
use Tk::ProgressBar;

my $mw = MainWindow->new;                                
my $pb = $mw->ProgressBar()->pack();

my $repeat;
$repeat = $mw->repeat( 100 => sub {
    while( $Q->pending ) {
        my $progress = $Q->dequeue;
        return unless $progress;
        $repeat->cancel if $progress == 100;
        $pb->value( $progress )
    }
} );

$mw->Button('-text' => 'Cancel',
            '-command' => sub{ kill 9, $pid })->pack();

$mw->MainLoop;

[download]

My question: Why is the killing of the external process with kill working in Windows and NOT working in Linux?

Thank you

Greetings,

Dirk

In reply to Tk and IPC - killing of process not working in Linux by Dirk80

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