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From: Gaute Hope <eg@gaute.vetsj.com>
To: notmuch@notmuchmail.org
Subject: python bindings memory management
Date: Sun, 19 Nov 2017 16:42:17 +0100	[thread overview]
Message-ID: <1511105729.sleqpkzaf0.astroid@strange.none> (raw)

Hi,

when writing this small script [0][1] using the notmuch python bindings I 
had to manually delete the python objects in the right order. Otherwise 
it segfaults when exiting, presumably because memory dependencies / 
cleanup isn't done correctly when the Python GC gets going. Essentially 
I have to delete the objects in the order of their dependency:

```
  db = notmuch.Database()
  q = db.create_query ("some query")
  q.set_sort (notmuch.Query.SORT.OLDEST_FIRST) # probably not necessary
  msgs = q.search_messages ()


  for m in msgs:
    pass

  # remove these to get segfault
  del m
  del msgs
  del q

```

Regards, Gaute

[0] https://gist.github.com/gauteh/de546cb143ebae4a489a482a05ab4beb
[1] id:1507537566.y6qjbg4xoq.astroid@strange.none


             reply	other threads:[~2017-11-19 15:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-19 15:42 Gaute Hope [this message]
2017-11-19 23:11 ` python bindings memory management David Bremner
2017-11-20 10:56   ` Gaute Hope

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