And, does someone know a better way to "restart myself"?
I would use $^X instead of $Config{perlpath}, since the perl executable might not be where it was configured for it to be. No need to "use Config" to get $^X.
However the behaviour I am experiencing, does not match this either. Instead, I get a CMD.EXE shell plus my Perl program in parallel! Any explanation for this?
If you want really interesting behavior, try this in the dummy code: 
while(1) {  sleep(5); my $x=scalar<>;print "running $$:$x\n"; }

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Then you'll see that when that thread comes out of sleep, it grabs stdin. Otherwise, the CMD shell has it.

My guess is that the parent thread, started with the relative path, starts a new thread with the EXEC and then exits, giving control back to the shell. The child thread (started with an absolute path) inherited stdin & stdout, so its input & output are interleaved with the command window.

My suggestion is to not respawn. Just overwrite $0! 

$0=rel2abs($0) unless file_name_is_absolute $0;

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That is, "lie" to make it look like your script was started with an absolute path.

In reply to Re: exec on Windows "halfway forks" by Yary
in thread exec on Windows "halfway forks" by rovf

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