Tracking Issue for process_set_process_group

[krallin]

Feature gate: #![feature(process_set_process_group)]

This is a tracking issue for: Add a process_group method to UNIX CommandExt

Add a process_group method to std::os::unix::process::CommandExt that
allows setting the process group id (i.e. calling setpgid) in the child, thus
enabling users to set process groups while leveraging the posix_spawn fast
path.

Public API

trait CommandExt {
    fn process_group(
        &mut self,
        pgroup: i32,
    ) -> &mut process::Command
}

Steps / History

• RFC: RFC: Add a process_group method to UNIX CommandExt rfcs#3228
• Implementation: Add a process_group method to UNIX CommandExt #93858
• Final comment period (FCP): Tracking Issue for process_set_process_group #93857 (comment)
• Stabilization PR: Document and stabilize process_set_process_group #99088

Unresolved Questions

• None yet.

[dtolnay]

This may or may not need a Fuchsia implementation. See #93858 (comment).

@rustbot ping fuchsia

[rustbot]

Hey friends of Fuchsia! This issue could use some guidance on how this should be
resolved/implemented on Fuchsia. Could one of you weigh in?

cc @tmandry

[niklasf]

Some updates:

• The final comment period of the RFC has concluded (RFC: Add a process_group method to UNIX CommandExt rfcs#3228 (comment)).
• The implementation has been completed and merged (Add a process_group method to UNIX CommandExt #93858).
• According to Fuchsia's target_family should be None, not "unix" #58590 (comment), Fuchsia has no process hierarchy. It seems sensible to do nothing for now (same as for CommandExt::groups). Eventually Fuchsia's target_family should be None, not "unix" #58590 will properly differentiate Unix and Fuchsia.

[joshtriplett]

T-libs-api, shall we stabilize process_group?

@rfcbot merge