From the ActiveState documentation for Perl 5.6.1 

Why doesn't signal handling work on Windows?

Signals are unsupported by the Win32 API. The C Runtime provides crude
+ support for signals, but there are serious caveats, such as inabilit
+y to die() or exit() from a signal handler. Perl itself does not guar
+antee that signal handlers will not interrupt critical operations suc
+h as memory allocation, which means signal invocation may throw perl 
+internals into disarray. For these reasons, signals are unsupported a
+t this time.

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In reply to Re: signal handler on NT by BrowserUk
in thread signal handler on NT by xhe

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