New submission from A. Jesse Jiryu Davis: In socketmodule.c we lock around getaddrinfo calls on platforms where getaddrinfo is believed not to be thread-safe. We've verified that it *is* thread-safe, and therefore stopped locking around it, on FreeBSD 5.3+ (#1288833) and Mac OS X 10.5+ (#25924). This ticket intends to do the same for OpenBSD and NetBSD.
OpenBSD 5.4 fixed getaddrinfo's thread safety and announced it 2013-11-01, "getaddrinfo(3) is now thread-safe": http://www.openbsd.org/plus54.html NetBSD's fix is older and less publicized. Since ancient times NetBSD's getaddrinfo.c included a comment, "Thread safe-ness must be checked", and the getaddrinfo(3) man page had the same warning as other BSDs, "The implementation of getaddrinfo is not thread-safe." On 2004-05-27 Christos Zoulas committed with the comment "make yp stuff re-entrant", fixing obvious problems like static variables in getaddrinfo: http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getaddrinfo.c.diff?r1=1.71&r2=1.72&only_with_tag=MAIN That change was released with NetBSD 3.0, and that alone might convince us to stop locking around getaddrinfo. Later, on 2006-07-18, between NetBSD 3 and 4, Zoulas deleted the comment "Thread safe-ness must be checked" from the source, with the message "Remove comments that do not reflect reality anymore": http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getaddrinfo.c.diff?r1=1.82&r2=1.83&only_with_tag=MAIN The same day, he removed the man page warning: http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getaddrinfo.3.diff?r1=1.43&r2=1.44&only_with_tag=MAIN NetBSD 4.0 was released 2007-12-19. ---------- messages: 260655 nosy: emptysquare, gvanrossum, martin.panter, ned.deily, python-dev, ronaldoussoren, yselivanov priority: normal severity: normal status: open title: getaddrinfo is thread-safe on NetBSD and OpenBSD versions: Python 2.7, Python 3.5, Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26406> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
