Date: Tue, 3 Mar 2015 01:40:37 +0300 (MSK) From: Alexander Monakov <amonakov@...ras.ru> To: musl@...ts.openwall.com Subject: Re: semaphore redesign On Sun, 1 Mar 2015, Szabolcs Nagy wrote: > sorry > > the code is ok (applications cannot rely on the barrier in case of > failure), it can lead to surprising results if the application > uses relaxed atomics, but it's not a conformance issue There was some follow up on IRC with the conclusion, as I understood, that even though the rest of memory may be unsynchronized after returning an error, the memory holding the semaphore itself needs to be synchronized (otherwise the decision to return an error might have been based on stale memory). Does sem_getvalue need to synchronize memory as well? I think it should, but current implementation does not. Alexander
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