PERLVARI(Gsharehook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
PERLVARI(Glockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nolocking))
PERLVARI(Gunlockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nounlocking))
+PERLVARI(Gthreadhook, thrhook_proc_t, MEMBER_TO_FPTR(Perl_nothreadhook))