_SC_BARRIERS 128 ext/etc/constdefs.h #if !defined(_SC_BARRIERS) _SC_BARRIERS 130 ext/etc/constdefs.h # define _SC_BARRIERS _SC_BARRIERS _SC_BARRIERS 1016 ext/etc/constdefs.h #if defined(_SC_BARRIERS) _SC_BARRIERS 1017 ext/etc/constdefs.h rb_define_const(mod, "SC_BARRIERS", INTEGER2NUM(_SC_BARRIERS));