#if defined(USE_ITHREADS)
PERLVAR(Gop_mutex, perl_mutex) /* Mutex for op refcounting */
-PERLVAR(Gsharedsv_space, PerlInterpreter*) /* The shared sv space */
-PERLVAR(Gsharedsv_space_mutex, perl_mutex) /* Mutex protecting the shared sv space */
#endif
/* Force inclusion of both runops options */
PERLVARI(Grunops_std, runops_proc_t, MEMBER_TO_FPTR(Perl_runops_standard))
PERLVARI(Grunops_dbg, runops_proc_t, MEMBER_TO_FPTR(Perl_runops_debug))
+/* Hooks to shared SVs and locks. */
+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))
+