Rollup merge of #137463 - sunshowers:illumos-posix-spawn, r=Mark-Simulacrum

Browse Source

[illumos] attempt to use posix_spawn to spawn processes

illumos has `posix_spawn`, and the very newest versions also have `_addchdir`, so use that. POSIX standardized this function so I also added a weak symbol lookup for the non `_np` version. (illumos has both.)

This probably also works on Solaris, but I don't have access to an installation to validate this so I decided to focus on illumos instead.

This is a nice ~4x performance improvement for process creation. My go-to as usual is nextest against the clap repo, which acts as a stress test for process creation -- with [this commit]:

```console
$ cargo nextest run -E 'not test(ui_tests) and not test(example_tests)'
before: Summary [   1.747s] 879 tests run: 879 passed, 2 skipped
after:  Summary [   0.445s] 879 tests run: 879 passed, 2 skipped
```

[this commit]: fde45f9aea

...

This commit is contained in:

许杰友 Jieyou Xu (Joe) 2025-03-05 21:46:40 +08:00 committed by GitHub

parent 93240daf42 998f241ee8

commit 228eb1fe6c

No known key found for this signature in database

GPG Key ID: B5690EEEBB952194

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Show Stats Download Patch File Download Diff File Expand all files Collapse all files

Diff Content Not Available