_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));