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Merged
merged 15 commits into from
Mar 30, 2023
Merged

standard lazy types #2788

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c2fddcc
standard lazy types
matklad Oct 17, 2019
0d2f664
Apply suggestions from code review
matklad Oct 18, 2019
34c70a4
remove numbers
matklad Oct 21, 2019
fe46a50
note that thread_local is not comming soon
matklad Oct 21, 2019
07c3c59
specify how we can add non-blocking `set` to libcore
matklad Oct 21, 2019
cc9aee8
specify that sync::OnceCell deadlocks when initialized reentrantly
matklad Oct 21, 2019
474a8bd
clarify that thread_local might not work out
matklad Oct 21, 2019
d459f2c
slightly more precise wording
matklad Oct 21, 2019
77ff080
avoid tearing of thread_locals
matklad Oct 26, 2019
19f6961
Fix typo
matklad Nov 9, 2019
b78c416
Mention that spinlocks are deliberately omitted
matklad Jan 12, 2020
4dc732e
Note Consume as an alternative to acquire
matklad Jan 12, 2020
2b31697
Mention conquer-once
matklad Jan 12, 2020
93231eb
Apply suggestions from tgross35's code review
tgross35 Dec 12, 2022
80a09d3
once_cell: adjust links to tracking issue
matklad Mar 30, 2023
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avoid tearing of thread_locals
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@matklad
matklad committed Oct 26, 2019
commit 77ff0800a1939eafcb7b592f68694c0e0f77ece9
4 changes: 2 additions & 2 deletions text/0000-standard-lazy-types.md
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Expand Up @@ -189,6 +189,8 @@ use std::cell::{RefCell, Lazy};
pub static FOO: Lazy<RefCell<u32>> = Lazy::new(|| RefCell::new(1));
```

However, `#[thread_local]` attribute is pretty far from stabilization at the moment, and due to the required special handling of destructors, it's unclear if just using `cell::Lazy` will work out.

Unlike `lazy_static!`, `Lazy` can be used used for locals:

```rust
Expand All @@ -203,8 +205,6 @@ fn main() {
}
```

However, `#[thread_local]` attribute is pretty far from stabilization at the moment, and due to the required special handling of destructors, it's unclear if just using `cell::Lazy` will work out.

# Reference-level explanation
[reference-level-explanation]: #reference-level-explanation

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