18 use alloc::sync::Weak;
19 use alloc::{string::String, sync::Arc, vec::Vec};
22 use core::sync::atomic::compiler_fence;
59         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in read_at()
207         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in read_at()
218         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
237         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
247         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
259         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
289         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
350         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
355     fn sync(&self) -> Result<(), SystemError> {  in sync()  method
473     fn sync(&self) -> Result<(), SystemError> {  in sync()  method
474         return self.0.lock().sync();  in sync()