Did you try whether it works? Seems easier than asking here whether it does. 
$ perl -wE 'sub DESTROY {say "ping"} my $x = bless [];'
ping
$ perl -wE 'sub DESTROY {say "ping"} my $x = bless []; exec "echo"'

$

[download]
Alternatively, one could have consulted the manual page: 
 Note that "exec" will not call your "END" blocks, nor will it
 invoke "DESTROY" methods on your objects.

[download]

In reply to Re^3: Timer::Runtime proposed by JavaFan
in thread Timer::Runtime proposed by awohld

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