39 pub struct RwLockReadGuard<'a, T: 'a> {  struct
112     pub fn try_read(&self) -> Option<RwLockReadGuard<T>> {  in try_read()
129             return Some(RwLockReadGuard {  in try_read()
139     pub fn read(&self) -> RwLockReadGuard<T> {  in read()
260 impl<'rwlock, T> RwLockReadGuard<'rwlock, T> {  implementation
314     pub fn downgrade(self) -> RwLockReadGuard<'rwlock, T> {  in downgrade()
324         RwLockReadGuard {  in downgrade()
353     pub fn downgrade(self) -> RwLockReadGuard<'rwlock, T> {  in downgrade()
363         return RwLockReadGuard {  in downgrade()
391 impl<'rwlock, T> Deref for RwLockReadGuard<'rwlock, T> {  implementation
421 impl<'rwlock, T> Drop for RwLockReadGuard<'rwlock, T> {  implementation