Date: Thu, 27 Apr 2023 18:05:13 +0200 From: Felix Palmen <zirias@FreeBSD.org> To: freebsd-hackers@freebsd.org Subject: Re: Thread safety of getaddrinfo()/getnameinfo() Message-ID: <7owxqb2h5f6rajo5xqijxawgsvfiti7egbn5erqa67gomfeiw6@vdbinwj5timn> In-Reply-To: <b511b099-8756-589e-43a1-9954c4a6a588@gmail.com> References: <invxudjtzhw6bdaf2vuy57ec4herfhn4t4lrcpyardmy2muru5@inwlenyqkzm5> <b511b099-8756-589e-43a1-9954c4a6a588@gmail.com>
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--ky2d6ahamdfej573 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Paul Floyd <paulf2718@gmail.com> [20230426 22:28]: > On 26-04-23 19:57, Felix Palmen wrote: >=20 > > So, is there a thread-safety issue with these functions, or a bug in > > valgrind, or maybe just some false positive? >=20 > A false positive is a bug. Well, depends on the definition. It's at least a different class than e.g. misdetecting what it *should* know about ;) > I believe that getaddrinfo should be MT safe. > [...] > These lock macros use spinlocks. The problem is that Valgrind (both Helgr= ind > and DRD) doesn't recognize any locking mechanisms other than pthreads and= Qt > threads. Thanks a lot for that clarification! So, won't worry about using these functions on threads any more :) Cheers, Felix --=20 Felix Palmen <zirias@FreeBSD.org> {private} felix@palmen-it.de -- ports committer (mentee) -- {web} http://palmen-it.de {pgp public key} http://palmen-it.de/pub.txt {pgp fingerprint} 6936 13D5 5BBF 4837 B212 3ACC 54AD E006 9879 F231 --ky2d6ahamdfej573 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iNUEABYKAH0WIQRpNhPVW79IN7ISOsxUreAGmHnyMQUCZEqdKF8UgAAAAAAuAChp c3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9yc2VtYW4ubmV0Njkz NjEzRDU1QkJGNDgzN0IyMTIzQUNDNTRBREUwMDY5ODc5RjIzMQAKCRBUreAGmHny MdrBAP9wZv4uJ+0Wp4eoJdkjD2Y0M7HTPBfy4Xqt3YRNHJU/EgEA22aN5w94uuS5 +jrFMYfcvhpUdCrPsh/5fCtiIsDF3gE= =T0Lq -----END PGP SIGNATURE----- --ky2d6ahamdfej573--
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