DemesneGH commented on PR #171:
URL:
https://github.com/apache/incubator-teaclave-trustzone-sdk/pull/171#issuecomment-2689669791
> Why don't we make it `no-std`, I think it can be easily achieved by:
>
> 1. `std::collections::{HashMap, HashSet}` => `hashbrown::{HashSet,
HashMap}`
> 2. `std::sync::RwLock` => `spin::RwLock`
> 3. For other imports, just import from `core` or `alloc` directly.
I did a quick test, and the HashMap and RwLock can be replaced with
hashbrown and spin.
However, `bincode` and `anyhow` with no-std need some code change:
- bincode with no-std has not a stable release, I've tried the
https://github.com/bincode-org/bincode/releases/tag/v2.0.0-rc.3 but the API has
changed a lot.
- Handle error using the no-std anyhow differs (reference:
https://docs.rs/anyhow/latest/anyhow/#no-std-support).
I suggest we review and merge the std version first, and then update to the
no-std version in a separate PR. This way we can highlight the differences
between the two and leave a record for the std version.
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