17         file::{File, FileMode},
86     file: Weak<File>,  field
94         file: Weak<File>,  in new()
100             file,  in new()
112     pub fn file(&self) -> Weak<File> {  in file()  method
113         self.file.clone()  in file()
122         let file = self.file.upgrade();  in ep_item_poll()  localVariable
123         if file.is_none() {  in ep_item_poll()
126         if let Ok(events) = file.unwrap().poll() {  in ep_item_poll()
210             let file = ProcessManager::current_pcb()  in close()  localVariable
215             if file.is_some() {  in close()
216                 file.unwrap().remove_epoll(&Arc::downgrade(&self.epoll.0))?;  in close()
594     fn is_epoll_file(file: &Arc<File>) -> bool {  in is_epoll_file()
595         if let FilePrivateData::EPoll(_) = *file.private_data.lock() {  in is_epoll_file()
725                 if let Some(file) = epitem.file.upgrade() {  in wakeup_epoll()
726                     EPollEventType::from_bits_truncate(file.poll()? as u32)  in wakeup_epoll()