alarm() is implemented in perl5.8+ on win32. just try it: 
perl -e "eval {local $SIG{ALRM} = sub { die qq!alarm\n! };alarm 1;slee
+p 2;alarm 0;};die $@ || 'nothing'"

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In reply to Re^2: win32, ctrl-c, sleep, and signals by Anonymous Monk
in thread win32, ctrl-c, sleep, and signals by SirBones

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