RB_PAGE_SIZE       71 cont.c         #define RB_PAGE_MASK (~(RB_PAGE_SIZE - 1))
RB_PAGE_SIZE      588 cont.c             th->machine.stack_start = (void*)(((VALUE)ptr & RB_PAGE_MASK) + STACK_UPPER((void *)&ptr, 0, RB_PAGE_SIZE));
RB_PAGE_SIZE      638 cont.c         	page = ptr + STACK_DIR_UPPER(size - RB_PAGE_SIZE, 0);
RB_PAGE_SIZE      639 cont.c         	if (mprotect(page, RB_PAGE_SIZE, PROT_NONE) < 0) {
RB_PAGE_SIZE      682 cont.c             sth->machine.stack_maxsize = size - RB_PAGE_SIZE;