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make `mk_attr_id` part of `ParseSess` Updates #48685 The current `mk_attr_id` uses the `AtomicU32` type, which is not very efficient and adds a lot of lock contention in a parallel environment. This PR refers to the task list in #48685, uses `mk_attr_id` as a method of the `AttrIdGenerator` struct, and adds a new field `attr_id_generator` to `ParseSess`. `AttrIdGenerator` uses the `WorkerLocal`, which has two advantages: 1. `Cell` is more efficient than `AtomicU32`, and does not increase any lock contention. 2. We put the index of the work thread in the first few bits of the generated `AttrId`, so that the `AttrId` generated in different threads can be easily guaranteed to be unique. cc `@cjgillot` |
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|---|---|---|
| .. | ||
| attr | ||
| expand | ||
| util | ||
| ast_traits.rs | ||
| ast.rs | ||
| entry.rs | ||
| lib.rs | ||
| mut_visit.rs | ||
| node_id.rs | ||
| ptr.rs | ||
| token.rs | ||
| tokenstream.rs | ||
| visit.rs | ||