add PL_signalhook to hook into signal dispatch

This is initially intended for threads::shared and shouldn't (yet)
be considered part of the public API.

1 files changed, 2 insertions, 0 deletions

diff --git a/perlapi.h b/perlapi.h
index 5b7c50b7f4..506d72c5ce 100644
--- a/perlapi.h
+++ b/perlapi.h
@@ -582,6 +582,8 @@ END_EXTERN_C
 #define PL_sig_pending		(*Perl_Isig_pending_ptr(aTHX))
 #undef  PL_sighandlerp
 #define PL_sighandlerp		(*Perl_Isighandlerp_ptr(aTHX))
+#undef  PL_signalhook
+#define PL_signalhook		(*Perl_Isignalhook_ptr(aTHX))
 #undef  PL_signals
 #define PL_signals		(*Perl_Isignals_ptr(aTHX))
 #undef  PL_slab_count