Implement getCurrentPid #205
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Thanks for the PR and the catch about the unstable |
yutotakano
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I've confirmed the remaining tests now pass perfectly on both my Windows and Linux Haskell setups. I've also rebased and force-pushed the changes. Thanks for the quick reply! |
snoyberg
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Jun 28, 2021
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Huh, didn't mean to tag the user, sorry SInCE! |
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Change
This PR adds a new exported function in System.Process:
getCurrentPid.This calls
getCurrentProcessIdfrom System.Win32.Process on Windows, andgetProcessIDfrom System.Posix.Process on POSIX systems.Rationale
This seems like an oversight considering
getPidis implemented already. I sometimes require the current running program's process ID. Currently, I have to do the CPP conditional logic myself every time, which is a pain. Putting this inprocessseems natural.Furthermore, my understanding of
processis that it is a unified interface to System.Win32.Process and System.Posix.Process. As both modules provide a function to "get the currently executing process id", I feel it makes sense to have a cross-platform wrapper function.Remaining Issues
The
@sincefield has been left as a TODO since I'm not sure what version this will be merged in.Tests
I could not come up with a method to test the PR. Unlike with the test for
getPid, there's nothing to compare the value against, I think. It's worked from my past experiences in personal projects.I wasn't able to ensure a stable setup to test to begin with, as running the existing test suite
stack teston the Windows version of Stack failed due to several reasons (getPidfailing, anddetatch_consolefailing). Any feedback or insight is therefore appreciated.