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use windows_sys::Win32::Foundation::HANDLE;
use windows_sys::Win32::Storage::FileSystem::UnlockFile;
use std::ops;
use std::os::windows::prelude::*;
use super::utils::syscall;
use super::RwLock;
#[derive(Debug)]
pub struct RwLockReadGuard<'lock, T: AsRawHandle> {
pub(crate) lock: &'lock RwLock<T>,
}
impl<T: AsRawHandle> ops::Deref for RwLockReadGuard<'_, T> {
type Target = T;
#[inline]
fn deref(&self) -> &Self::Target {
&self.lock.inner
}
}
impl<T: AsRawHandle> Drop for RwLockReadGuard<'_, T> {
#[inline]
fn drop(&mut self) {
let handle = self.lock.inner.as_raw_handle() as HANDLE;
syscall(unsafe { UnlockFile(handle, 0, 0, 1, 0) })
.expect("Could not unlock the file descriptor");
}
}
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