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From: Alexander Monakov <amonakov@ispras.ru>
To: musl@lists.openwall.com
Subject: Re: sem_getvalue conformance considerations
Date: Fri, 29 Aug 2014 00:47:48 +0400 (MSK)	[thread overview]
Message-ID: <alpine.LNX.2.00.1408290034120.5292@monopod.intra.ispras.ru> (raw)
In-Reply-To: <alpine.LNX.2.00.1408280026590.6544@monopod.intra.ispras.ru>

Thanks (again) to Rich for showing on IRC that that still was not correct,
with at least two issues:

1. with one waiter, unwait causes an in-progress post to be lost (perhaps
workaroundable by consuming the post from unwait);

2. it is invalid to update val[1] non-atomically with val[0] in sem_post, as
the semaphore may be destroyed in between by a waiter that noticed the post
via unwait

Alexander



  reply	other threads:[~2014-08-28 20:47 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-27  2:33 Rich Felker
2014-08-27  7:05 ` Jens Gustedt
2014-08-27  7:43   ` Rich Felker
2014-08-27 10:43     ` Alexander Monakov
2014-08-27 13:32       ` Alexander Monakov
2014-08-27 19:06         ` Alexander Monakov
2014-08-27 21:06           ` Alexander Monakov
2014-08-28 20:47             ` Alexander Monakov [this message]
2014-08-29 22:51               ` Alexander Monakov
2014-08-30  5:12                 ` Rich Felker
2014-09-01 17:50                 ` Alexander Monakov
2015-02-27 23:21                   ` semaphore redesign Alexander Monakov
2015-02-28 15:42                     ` Rich Felker
2015-03-01 18:54                       ` Alexander Monakov
2015-03-01 17:30                     ` Szabolcs Nagy
2015-03-01 17:50                       ` Szabolcs Nagy
2015-03-02 22:40                         ` Alexander Monakov
2015-03-02 22:45                           ` Rich Felker
2015-03-01 18:24                       ` Alexander Monakov

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