154 pub struct PageFrameCount(usize);  struct
156 impl PageFrameCount {  impl
183 impl Add for PageFrameCount {  implementation
191 impl AddAssign for PageFrameCount {  implementation
197 impl Sub for PageFrameCount {  implementation
205 impl SubAssign for PageFrameCount {  implementation
211 impl Mul for PageFrameCount {  implementation
219 impl Add<usize> for PageFrameCount {  implementation
227 impl AddAssign<usize> for PageFrameCount {  implementation
233 impl Sub<usize> for PageFrameCount {  implementation
241 impl SubAssign<usize> for PageFrameCount {  implementation
247 impl Mul<usize> for PageFrameCount {  implementation
267     pub fn new(used: PageFrameCount, total: PageFrameCount) -> Self {  in new()
271     pub fn used(&self) -> PageFrameCount {  in used()
275     pub fn free(&self) -> PageFrameCount {  in free()
279     pub fn total(&self) -> PageFrameCount {  in total()
287     unsafe fn allocate(&mut self, count: PageFrameCount) -> Option<(PhysAddr, PageFrameCount)>;  in allocate()  argument
290     unsafe fn free(&mut self, address: PhysAddr, count: PageFrameCount);  in free()
305     unsafe fn allocate(&mut self, count: PageFrameCount) -> Option<(PhysAddr, PageFrameCount)> {  in allocate()  argument
308     unsafe fn free(&mut self, address: PhysAddr, count: PageFrameCount) {  in free()
325 pub unsafe fn allocate_page_frames(count: PageFrameCount) -> Option<(PhysAddr, PageFrameCount)> {  in allocate_page_frames()  argument
334 pub unsafe fn deallocate_page_frames(frame: PhysPageFrame, count: PageFrameCount) {  in deallocate_page_frames()