C:\test>start /b perl -E"say $$; sleep 10000"

C:\test>192904

C:\test>perl -E"kill 21, 192904 or die $^E"
Terminating on signal SIGBREAK(21)

C:\test>perl -E"kill 21, $$ or say $^E; say 'ending';"
The parameter is incorrect
ending

##</code><code>##

C:\test>perl -wE"$SIG{BREAK}=sub{ say 'BREAKing' }; &{$SIG{BREAK}}; say 'ending'; "
BREAKing
ending