GC_MP_NORMAL     3509 gc/os_dep.c    #define GC_mprotect_state GC_MP_NORMAL
GC_MP_NORMAL     3565 gc/os_dep.c                    if(GC_mprotect_state != GC_MP_NORMAL)
GC_MP_NORMAL     3572 gc/os_dep.c                    GC_mprotect_state = GC_MP_NORMAL;
GC_MP_NORMAL     3881 gc/os_dep.c        if(GC_mprotect_state == GC_MP_NORMAL) { /* common case */