fd_lock/sys/unix/
read_guard.rs

1use rustix::fd::AsFd;
2use rustix::fs::FlockOperation;
3use std::ops;
4
5use super::{compatible_unix_lock, RwLock};
6
7#[derive(Debug)]
8pub struct RwLockReadGuard<'lock, T: AsFd> {
9    lock: &'lock RwLock<T>,
10}
11
12impl<'lock, T: AsFd> RwLockReadGuard<'lock, T> {
13    pub(crate) fn new(lock: &'lock RwLock<T>) -> Self {
14        Self { lock }
15    }
16}
17
18impl<T: AsFd> ops::Deref for RwLockReadGuard<'_, T> {
19    type Target = T;
20
21    #[inline]
22    fn deref(&self) -> &Self::Target {
23        &self.lock.inner
24    }
25}
26
27impl<T: AsFd> Drop for RwLockReadGuard<'_, T> {
28    #[inline]
29    fn drop(&mut self) {
30        let _ = compatible_unix_lock(self.lock.inner.as_fd(), FlockOperation::Unlock).ok();
31    }
32}