Fails to compile on OpenBSD about process_control HOT 8 CLOSED

Unfortunately, I don't think OpenBSD can be supported. This crate makes a strong effort to not terminate the wrong process under any circumstance. To make that happen, waitid is called in careful combination with other syscalls. However, it's not implemented for this platform AFAICT.

Do you know an alternative to waitid that's OpenBSD-specific or have any other suggestions?

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I'm closing this, since one of the starship maintainers indicated that they're close to merging a fix for this issue. If further use cases arise for this platform to be supported, this can be reopened.

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@dylni I'm not sure what exact functionality you're looking for in a waitid equivalent, but OpenBSD does have wait3 and wait4 which might be usable: http://man.openbsd.org/wait4

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@AaronM04 I use it to wait on processes without letting them terminate. That's the purpose of the WNOWAIT flag, which I use here:

Unfortunately, I don't see any way to do that with wait3 or wait4.

If there's nothing equivalent, one option is to make Timeout::terminating a compile error for this target and add Timeout::terminating_if_possible to only terminate for other targets. Would that work for your use case? Long-running processes would never be killed on OpenBSD with that implementation.

The best option would be to find a platform-specific syscall for this platform, but I don't think one exists.

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@dylni this is the use case I'm concerned with: https://github.com/starship/starship/blob/master/src/utils.rs#L288

If I understand you correctly, this would be a compile error, so no, it wouldn't work.

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@AaronM04 I responded at the starship repository.

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Thanks for looking into this! 😀

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No problem! 😀 I'm glad it'll have a favorable resolution.

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