77 pub struct RwLockReadGuard<'a, T: 'a + ?Sized> {  struct
164     pub fn read(&self) -> RwLockReadGuard<T> {  in read()
196     pub fn try_read(&self) -> Option<RwLockReadGuard<T>> {  in try_read()
206             Some(RwLockReadGuard {  in try_read()
406 impl<'rwlock, T: ?Sized> RwLockReadGuard<'rwlock, T> {  impl
425 impl<'rwlock, T: ?Sized + fmt::Debug> fmt::Debug for RwLockReadGuard<'rwlock, T> {  implementation
431 impl<'rwlock, T: ?Sized + fmt::Display> fmt::Display for RwLockReadGuard<'rwlock, T> {  implementation
515     pub fn downgrade(self) -> RwLockReadGuard<'rwlock, T> {  in downgrade()
524         RwLockReadGuard {  in downgrade()
574     pub fn downgrade(self) -> RwLockReadGuard<'rwlock, T> {  in downgrade()
583         RwLockReadGuard {  in downgrade()
650 impl<'rwlock, T: ?Sized> Deref for RwLockReadGuard<'rwlock, T> {  implementation
680 impl<'rwlock, T: ?Sized> Drop for RwLockReadGuard<'rwlock, T> {  implementation
763         drop(RwLockReadGuard {  in unlock_shared()