Hi - I got interested in 5.8 threads too... > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > zentara > Sent: Sunday, February 02, 2003 4:53 AM > To: [EMAIL PROTECTED] > Subject: threads and pids > > > Hi, > I just got interested in 5.8 threads. I have a simple question > about the first basic example in perlthrtut. > > My basic question is how to track the pids, and why does the > following program create 4 pids instead of 3? I would expect > 3, one for the parent, and one for each of 2 threads. > > So run the following program and watch it with "top c". 4 pids > are generated. What is that extra pid for? > > Also does anyone know how to get the individual threads pids? > I can get the tid, but can't seem to find the pid, except the parents. > > #!/usr/bin/perl > use threads; > > print "I'm the parent pid-> $$\n"; > $thr = threads->new(\&sub1); > $thr1 = threads->new(\&sub1); > sleep 25; > > sub sub1{ > $myobject = threads->self; > $mytid= $myobject->tid; > print "In the thread $myobject $mytid \n"; > sleep 20; > } >
Correct me (someone) if I'm wrong, but a thread is a THREAD not a PROCESS. So a thread has a thread id (tid) but (depending on the implementation) not necessarly) a process id (pid). I think you should stick to tids when working with threads. Also, this: $myobject = threads->self; $mytid= $myobject->tid; can be shortcut to: $mytid = threads->tid; Aloha => Beau; -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
