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Add some more notes for self

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Bradlee Speice 2019-01-22 00:03:36 -05:00
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_drafts/understanding-allocations-in-rust.md
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@ -523,6 +523,8 @@ guidelines are in order:
with reckless abandon. with reckless abandon.
- [Arrays](https://doc.rust-lang.org/std/primitive.array.html) are guaranteed - [Arrays](https://doc.rust-lang.org/std/primitive.array.html) are guaranteed
to be stack-allocated in all circumstances. to be stack-allocated in all circumstances.
- Note to self: Do I need to mention generics or trait objects? I think this
may be handled by the other points, and can be addressed later.
**For code outside your control**: **For code outside your control**:
@ -544,8 +546,10 @@ Questions:
7. Legal to pass an array as an argument? 7. Legal to pass an array as an argument?
8. Can you force a heap allocation with arrays that are larger than stack size? 8. Can you force a heap allocation with arrays that are larger than stack size?
- Check `ulimit -s` - Check `ulimit -s`
- Are array implementations larger than 32 needed? 32 x u64 == 256 bytes
9. Can you force heap allocation by returning something that escapes the stack? 9. Can you force heap allocation by returning something that escapes the stack?
- Will `#[inline(always)]` move this back to a stack allocation? - Will `#[inline(always)]` move this back to a stack allocation?
- Will `#[inline(never)]` force a heap allocation?
# Piling On - Rust and the Heap # Piling On - Rust and the Heap