Fine-tune the Ordering for the atomic usages

[wang384670111]

SeqCst is overly restrictive. I believe that the ordering can be appropriately modified.

COUNTER and NEXT_ID are used for multithreading counting purposes and don’t synchronize with other locals, so using Relaxed ordering is sufficient.

neon/crates/neon/src/thread/mod.rs

Line 115 in 09fce79

COUNTER.fetch_add(1, Ordering::SeqCst)

neon/crates/neon/src/lifecycle.rs

Line 40 in 09fce79

let next = NEXT_ID.fetch_add(1, Ordering::SeqCst).checked_add(1);