This crate is designed to help you run CPU intensive code in your async applications. It does so with 0 allocations per task, and intends to allow in-place initialisation of responses.

#[tokio::main]
async fn main() {
    let hash = "$argon2i$v=19$m=65536,t=1,p=1$c29tZXNhbHQAAAAAAAAAAA$+r0d29hqEB0yasKr55ZgICsQGSkl0v0kgwhd+U3wyRo";
    let password = "password";

    plunger::unblock(move || password_auth::verify_password(password, hash))
        .await
        .unwrap();
}

While the intent is to unblock the async runtime, this API might have to defensively block the runtime if cancellation occurs while the task is running.

We assume the following:

1. Cancellation is rare
2. Tasks run in the range of 100us to 1ms
3. We can use block_in_place to reduce the impact of blocking when the tokio feature is enabled and using a multithreaded runtime.