[libc-commits] [libc] [libc] End a semaphore wait with EINTR when a signal handler runs (PR #236969)

[Mike Lothian via libc-commits]

FireBurn wrote:

I updated the PR. It adds `FutexSigAction`, applies the comment wording, uses a lambda in the test, and keeps the extra test dependencies in sem_wait_test only. sem_wait_test, sem_init_test and semaphore_test pass locally

On the design question: I kept the opt-in argument, because raw_mutex, raw_rwlock, CndVar, callonce and thread all rely on the wait restarting and would each need a retry wrapper if wait() always returned EINTR. If you prefer that I can switch to it, but it touches those callers, so it would be better as its own change


https://github.com/llvm/llvm-project/pull/236969