Prokio RwLock can not be sent across threads

[maxall41]

I'm trying to migrate an existing project from tokio to prokio for WASM support. But I't seems that unlike tokio RwLocks prokio RwLocks can not be sent across threads. Am I just doing something wrong here? Or Is there a reason for this?

Whenever I try to use one I get an error like:

future cannot be sent between threads safely future created by async block is not `Send` Help: within `prokio::pinned::RwLock<std::option::Option<std::string::String>>`, the trait `std::marker::Sync` is not implemented for `std::cell::UnsafeCell<std::vec::Vec<std::task::Waker>>` Note: captured value is not `Send` because `&mut` references cannot be sent unless their referent is `Send` Note: required for the cast from `[async block@src/actions/channel_manager.rs:44:37: 46:6]` to the object type `dyn futures::Future<Output = std::result::Result<(), actions::channel_manager::CreateJobError>> + std::marker::Send`

This even happens when not run inside a prokio task for some reason...

[futursolo]

This is by design. Prokio futures are being pinned to 1 thread. All subsequent futures will also be spawned to the same thread. It is faster and smaller to use a pinned sunchronisation. However, it cannot be sent across threads.

If you are considering to use RwLock across threads, you can continue to use tokio::sync.