jj/lib
Waleed Khan 326be7c91e working_copy: send updates via channel
In preparation of traversing the filesystem in parallel, send updates via `channel`.

An alternative is to modify shared mutable state, e.g. put `self.file_states` behind a mutex or use a concurrent hash-map. This risks leaving the `TreeState` in an invalid state if an error occurs, and makes invariants harder to reason about.

Using a channel introduces a small performance regression. (I didn't try out the concurrent hash-map approach.)

```sh
$ hyperfine --parameter-list hash before,after --setup 'git checkout {hash} && cargo build --profile release-with-debug' --warmup 3 './target/release-with-debug/jj -R ../nixpkgs st'
Benchmark 1: ./target/release-with-debug/jj -R ../nixpkgs st (hash = before)
  Time (mean ± σ):      1.533 s ±  0.013 s    [User: 0.587 s, System: 0.926 s]
  Range (min … max):    1.510 s …  1.559 s    10 runs

Benchmark 2: ./target/release-with-debug/jj -R ../nixpkgs st (hash = after)
  Time (mean ± σ):      1.563 s ±  0.021 s    [User: 0.607 s, System: 0.936 s]
  Range (min … max):    1.518 s …  1.595 s    10 runs

Summary
  ./target/release-with-debug/jj -R ../nixpkgs st (hash = before) ran
    1.02 ± 0.02 times faster than ./target/release-with-debug/jj -R ../nixpkgs st (hash = after)
```
2023-08-03 17:56:05 +00:00
..
benches cargo: rename crates from jujutsu/jujutsu-lib to jj-cli/jj-lib 2023-07-09 06:40:43 +02:00
gen-protos gen-protos: make old protoc accept optional fields 2023-07-27 15:32:48 +09:00
src working_copy: send updates via channel 2023-08-03 17:56:05 +00:00
tests working_copy: in ignored directories, visit only already tracked paths 2023-08-01 06:31:52 +00:00
testutils tests: add TestWorkspace::snapshot() to simplify snapshotting 2023-07-28 09:32:18 -07:00
Cargo.toml cargo: bump the cargo-dependencies group with 1 update 2023-08-02 09:05:01 -07:00