C++ (Cpp) pic_set_priority示例

示例#1

文件： pic_splfuncs.c 项目： ryo/netbsd-src

int
_splraise(int newipl)
{
	struct cpu_info * const ci = curcpu();
	const int oldipl = ci->ci_cpl;
	KASSERT(newipl < NIPL);
	if (newipl > ci->ci_cpl) {
		pic_set_priority(ci, newipl);
	}
	return oldipl;
}

示例#2

void
pic_do_pending_ints(register_t psw, int newipl, void *frame)
{
	struct cpu_info * const ci = curcpu();
	if (__predict_false(newipl == IPL_HIGH)) {
		KASSERTMSG(ci->ci_cpl == IPL_HIGH, "cpl %d", ci->ci_cpl);
		return;
	}
	while ((pic_pending_ipls & ~__BIT(newipl)) > __BIT(newipl)) {
		KASSERT(pic_pending_ipls < __BIT(NIPL));
		for (;;) {
			int ipl = 31 - __builtin_clz(pic_pending_ipls);
			KASSERT(ipl < NIPL);
			if (ipl <= newipl)
				break;

			pic_set_priority(ci, ipl);
			pic_list_deliver_irqs(psw, ipl, frame);
			pic_list_unblock_irqs();
		}
	}
	if (ci->ci_cpl != newipl)
		pic_set_priority(ci, newipl);
}