C++ (Cpp) Page_number示例

示例#1

文件： obj_space-virt.cpp 项目： ExpressOS/third_party-l4re

unsigned long
Generic_obj_space<SPACE>::v_delete(Page_number virt, Size size,
                                   unsigned long page_attribs = L4_fpage::CRWSD)
{
  (void)size;
  assert (size.value() == 1);

  Entry *c;
  if (Optimize_local
      && mem_space() == Mem_space::current_mem_space(current_cpu()))
    {
      c = cap_virt(virt.value());
      if (!c)
	return 0;

      Capability cap = Mem_layout::read_special_safe((Capability*)c);
      if (!cap.valid())
	return 0;
    }
  else
    c = get_cap(virt.value());

  if (c && c->valid())
    {
      if (page_attribs & L4_fpage::R)
        c->invalidate();
      else
        c->del_rights(page_attribs & L4_fpage::CWSD);
    }

  return 0;
}

示例#2

文件： obj_space-phys.cpp 项目： MicroTrustRepos/microkernel

unsigned long
Generic_obj_space<SPACE>::v_delete(Page_number virt, Size size,
                                   unsigned long page_attribs = L4_fpage::RWX)
{
  (void)size;
  assert (size.value() == 1);
  Capability *c = get_cap(virt.value());

  if (c && c->valid())
    {
      if (page_attribs & L4_fpage::R)
        c->invalidate();
      else
	c->del_rights(page_attribs & L4_fpage::WX);
    }

  return 0;
}