static_leak 0.1.0

Leak references with static lifetimes from static Mutexes and RwLocks
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

use crate::{MutexGuardExtension, RwLockReadGuardExtension, RwLockWriteGuardExtension};
use core::ops::{Deref, DerefMut};
use std::sync::{MutexGuard, RwLockReadGuard, RwLockWriteGuard};

impl<T: ?Sized> MutexGuardExtension<T> for MutexGuard<'static, T> {
    fn leak(mut guard: Self) -> &'static mut T
    where
        Self: Sized,
    {
        let r = guard.deref_mut() as *mut _;
        core::mem::forget(guard);
        unsafe { &mut *r }
    }
}

impl<T: ?Sized> RwLockWriteGuardExtension<T> for RwLockWriteGuard<'static, T> {
    fn leak(mut guard: Self) -> &'static mut T
    where
        Self: Sized,
    {
        let r = guard.deref_mut() as *mut _;
        core::mem::forget(guard);
        unsafe { &mut *r }
    }
}

impl<T: ?Sized> RwLockReadGuardExtension<T> for RwLockReadGuard<'static, T> {
    fn leak(guard: Self) -> &'static T
    where
        Self: Sized,
    {
        let r = guard.deref() as *const _;
        core::mem::forget(guard);
        unsafe { &*r }
    }
}