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RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

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Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

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    1. Carlos O'Donell‏ @CarlosODonell 23 Dec 2016

      http://austingroupbugs.net/view.php?id=1110 … ... how long before @RichFelker comments? :-)

      1 reply 0 retweets 0 likes
    2. Rich Felker‏ @RichFelker 23 Dec 2016
      Replying to @CarlosODonell @patofiero

      It's a duplicate of my http://austingroupbugs.net/view.php?id=639  which was closed.

      1 reply 0 retweets 0 likes
    3. Carlos O'Donell‏ @CarlosODonell 23 Dec 2016
      Replying to @RichFelker

      Thanks. I think the dlclose limitation is particularly onerous because error detection involves keeping the old handle forever?

      1 reply 0 retweets 0 likes
    4. Rich Felker‏ @RichFelker 23 Dec 2016
      Replying to @CarlosODonell @patofiero

      I don't see that as onerous at all being that I don't think libraries should ever be unloadable. :-)

      1 reply 0 retweets 0 likes
      Rich Felker‏ @RichFelker 23 Dec 2016
      Replying to @RichFelker @patofiero

      However I also don't see how such a requirement is imposed. The only diagnostic required is "not currently a valid handle".

      10:47 PM - 23 Dec 2016
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Carlos O'Donell‏ @CarlosODonell 24 Dec 2016
          Replying to @RichFelker

          How do you reliably detect "not currently a valid handle?" It requires inifinite storage or finite handles.

          1 reply 0 retweets 0 likes
        3. Rich Felker‏ @RichFelker 25 Dec 2016
          Replying to @CarlosODonell @patofiero

          No, just comparison with a list of all valid handles.

          1 reply 0 retweets 0 likes
        4. Carlos O'Donell‏ @CarlosODonell 25 Dec 2016
          Replying to @RichFelker

          Ah, I see, the wording in the standard doesn't seem to care if an old closed handle eventually cycles back again.

          1 reply 0 retweets 0 likes
        5. Carlos O'Donell‏ @CarlosODonell 25 Dec 2016
          Replying to @CarlosODonell @RichFelker

          So what data structure would you use for this?

          1 reply 0 retweets 0 likes
        6. Rich Felker‏ @RichFelker 26 Dec 2016
          Replying to @CarlosODonell @patofiero

          Linked list & linear search, because things blow up badly with large number of libraries anyway.

          1 reply 0 retweets 0 likes
        7. Rich Felker‏ @RichFelker 26 Dec 2016
          Replying to @RichFelker @patofiero

          But you could use a radix tree on bits of the handle if you care about scaling in # of libs.

          1 reply 0 retweets 0 likes
        8. Carlos O'Donell‏ @CarlosODonell 28 Dec 2016
          Replying to @RichFelker

          I do care to scale on the # of libs, I already know about users with thousands of python modules all DSOs.

          0 replies 0 retweets 0 likes
        9. End of conversation

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