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journal: properly check for held lock (issue5349)
The 'jlock' code meant to check for a held lock, but it actually just checking for a
lock object. With CPython, this worked because the 'jlock' object is not
referenced outside the '_write' function so reference counting would garbage
collect it and the '_lockref' would return None. With pypy, the garbage
collection would happen at an undefined time and the '_lockref' can still point
to a 'jlock' object outside of '_write'.
The right thing to do here is not only to check for a lock object but also to
check if the lock is held. We update the code to do so and reuse a utility
method that exist on 'localrepo' to help readability. This fix journal related
tests with pypy.
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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date | Tue, 13 Sep 2016 20:30:19 +0200 |
parents | c29efd272395 |
children |
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[This file is here for historical purposes, all recent contributors should appear in the changelog directly] Andrea Arcangeli <andrea at suse.de> Thomas Arendsen Hein <thomas at intevation.de> Goffredo Baroncelli <kreijack at libero.it> Muli Ben-Yehuda <mulix at mulix.org> Mikael Berthe <mikael at lilotux.net> Benoit Boissinot <bboissin at gmail.com> Brendan Cully <brendan at kublai.com> Vincent Danjean <vdanjean.ml at free.fr> Jake Edge <jake at edge2.net> Michael Fetterman <michael.fetterman at intel.com> Edouard Gomez <ed.gomez at free.fr> Eric Hopper <hopper at omnifarious.org> Alecs King <alecsk at gmail.com> Volker Kleinfeld <Volker.Kleinfeld at gmx.de> Vadim Lebedev <vadim at mbdsys.com> Christopher Li <hg at chrisli.org> Chris Mason <mason at suse.com> Colin McMillen <mcmillen at cs.cmu.edu> Wojciech Milkowski <wmilkowski at interia.pl> Chad Netzer <chad.netzer at gmail.com> Bryan O'Sullivan <bos at serpentine.com> Vicent SeguĂ Pascual <vseguip at gmail.com> Sean Perry <shaleh at speakeasy.net> Nguyen Anh Quynh <aquynh at gmail.com> Ollivier Robert <roberto at keltia.freenix.fr> Alexander Schremmer <alex at alexanderweb.de> Arun Sharma <arun at sharma-home.net> Josef "Jeff" Sipek <jeffpc at optonline.net> Kevin Smith <yarcs at qualitycode.com> TK Soh <teekaysoh at yahoo.com> Radoslaw Szkodzinski <astralstorm at gorzow.mm.pl> Samuel Tardieu <sam at rfc1149.net> K Thananchayan <thananck at yahoo.com> Andrew Thompson <andrewkt at aktzero.com> Michael S. Tsirkin <mst at mellanox.co.il> Rafael Villar Burke <pachi at mmn-arquitectos.com> Tristan Wibberley <tristan at wibberley.org> Mark Williamson <mark.williamson at cl.cam.ac.uk>