fd_lock/sys/unix/
write_guard.rs

1use rustix::fs::{flock, FlockOperation};
2use std::ops;
3use std::os::unix::io::AsRawFd;
4
5use super::RwLock;
6
7#[derive(Debug)]
8pub struct RwLockWriteGuard<'lock, T: AsRawFd> {
9    lock: &'lock mut RwLock<T>,
10}
11
12impl<'lock, T: AsRawFd> RwLockWriteGuard<'lock, T> {
13    pub(crate) fn new(lock: &'lock mut RwLock<T>) -> Self {
14        Self { lock }
15    }
16}
17
18impl<T: AsRawFd> ops::Deref for RwLockWriteGuard<'_, T> {
19    type Target = T;
20
21    #[inline]
22    fn deref(&self) -> &Self::Target {
23        &self.lock.inner
24    }
25}
26
27impl<T: AsRawFd> ops::DerefMut for RwLockWriteGuard<'_, T> {
28    #[inline]
29    fn deref_mut(&mut self) -> &mut Self::Target {
30        &mut self.lock.inner
31    }
32}
33
34impl<T: AsRawFd> Drop for RwLockWriteGuard<'_, T> {
35    #[inline]
36    fn drop(&mut self) {
37        let _ = flock(&self.lock.as_fd(), FlockOperation::Unlock).ok();
38    }
39}
fd_lock/sys/unix/write_guard.rs

fd_lock/sys/unix/
write_guard.rs
