Re^4: Setting a timer to a system call

[Freezer]

    system ($call);    # This is where my system call is
    
  
    my $worker_pid = open( READ, "top -d 1 -b |" );   # What does this
+ line mean?
    
    print "\t$worker_pid\n";
    while(<READ>){  }
    return;

}

My question is embedded in the code. Thanks.

[zentara]

That is called a piped open, where I run the program "top'" and collect output from it. It was just meant as an example, you could put "system( my_java )" or whatever you want done in the thread.