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Clean up fd_monitor getter

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No need for UnsafeCell
This commit is contained in:
Peter Ammon 2024-09-22 14:02:35 -07:00
parent fb700ca50d
commit 617b61cd3a
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1 changed files with 6 additions and 11 deletions
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17
src/io.rs
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@ -20,9 +20,10 @@ use errno::Errno;
use libc::{EAGAIN, EINTR, ENOENT, ENOTDIR, EPIPE, EWOULDBLOCK, STDOUT_FILENO};
use nix::fcntl::OFlag;
use nix::sys::stat::Mode;
use once_cell::sync::Lazy;
#[cfg(not(target_has_atomic = "64"))]
use portable_atomic::AtomicU64;
use std::cell::{RefCell, UnsafeCell};
use std::cell::RefCell;
use std::fs::File;
use std::io;
use std::os::fd::{AsRawFd, IntoRawFd, OwnedFd, RawFd};
@ -1033,14 +1034,8 @@ const NOCLOB_ERROR: &wstr = L!("The file '%ls' already exists");
const OPEN_MASK: Mode = Mode::from_bits_truncate(0o666);
/// Provide the fd monitor used for background fillthread operations.
fn fd_monitor() -> &'static mut FdMonitor {
// Deliberately leaked to avoid shutdown dtors.
static mut FDM: *const UnsafeCell<FdMonitor> = std::ptr::null();
unsafe {
if FDM.is_null() {
FDM = Box::into_raw(Box::new(UnsafeCell::new(FdMonitor::new())))
}
}
let ptr: *mut FdMonitor = unsafe { (*FDM).get() };
unsafe { &mut *ptr }
static FD_MONITOR: Lazy<FdMonitor> = Lazy::new(FdMonitor::new);
pub fn fd_monitor() -> &'static FdMonitor {
&FD_MONITOR
}