Implement futex support on FreeBSD (_umtx_op) #3553
Labels
A-freebsd
Area: affects our FreeBSD target support
A-shims
Area: This affects the external function shims
C-enhancement
Category: a PR with an enhancement or an issue tracking an accepted enhancement
E-good-first-issue
A good way to start contributing, mentoring is available
Comments
RalfJung
added
C-enhancement
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When running our test suite on FreeBSD, almost all test failures are due to missing an implementation of
_umtx_op, which is the FreeBSD version of futexes. Given that we have shared futex infrastructure that backs both the Linux and Windows futex support, it shouldn't be too hard to also add support for the FreeBSD variant of this.There was a PR at #2321 that had some issues but could be used as a starting point.
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