Box::leak(boxed) in ccall_with_threads.rs

[era127]

In the ccall_with_threads.rs example, would it be possible to explain why Box::leak() is used as opposed to into_raw(). Is this something specific with the memory management with Julia? Thanks.

    // Box and return the JoinHandle as a pointer.
    let boxed = Box::new(handle);
    Box::leak(boxed) as *mut _ as *mut _

[Taaitaaiger]

I wasn't aware that function existed, I just checked the docs and it would be a better choice.

That said, this functionality will be dropped in the next version of jlrs because it's awkward to use and introduces additional dependencies. It's better to enter a GC-safe region if you want to call long-running Rust code that doesn't call back into Julia.

[era127]

Ok thanks!