17 use alloc::sync::Weak;
18 use alloc::{string::String, sync::Arc, vec::Vec};
21 use core::sync::atomic::compiler_fence;
58         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in read_at()
180         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in read_at()
191         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
210         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
220         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
232         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
241         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
302         compiler_fence(core::sync::atomic::Ordering::SeqCst);  in write_at()
307     fn sync(&self) -> Result<(), i32> {  in sync()  method
425     fn sync(&self) -> Result<(), i32> {  in sync()  method
426         return self.0.lock().sync();  in sync()