nanvm_lib/mem/
mut_ref.rs

1use core::{
2    mem::forget,
3    ops::{Deref, DerefMut},
4};
5
6use crate::mem::{block::Block, object::Object};
7
8use super::{manager::Dealloc, ref_::Ref};
9
10/// A reference to a mutable object allocated by a memory manager.
11#[repr(transparent)]
12#[derive(Debug)]
13pub struct MutRef<T: Object, D: Dealloc>(*mut Block<T, D>);
14
15impl<T: Object, D: Dealloc> MutRef<T, D> {
16    #[inline(always)]
17    pub const unsafe fn new(v: *mut Block<T, D>) -> Self {
18        Self(v)
19    }
20    #[inline(always)]
21    pub const fn to_ref(self) -> Ref<T, D> {
22        let result = unsafe { Ref::from_internal(self.0) };
23        forget(self);
24        result
25    }
26}
27
28impl<T: Object, D: Dealloc> Drop for MutRef<T, D> {
29    #[inline(always)]
30    fn drop(&mut self) {
31        unsafe { (*self.0).delete() }
32    }
33}
34
35impl<T: Object, D: Dealloc> Deref for MutRef<T, D> {
36    type Target = T;
37    #[inline(always)]
38    fn deref(&self) -> &Self::Target {
39        unsafe { (*self.0).object() }
40    }
41}
42
43impl<T: Object, D: Dealloc> DerefMut for MutRef<T, D> {
44    #[inline(always)]
45    fn deref_mut(&mut self) -> &mut Self::Target {
46        unsafe { (*self.0).object_mut() }
47    }
48}
nanvm_lib/mem/mut_ref.rs

nanvm_lib/mem/
mut_ref.rs
