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TIFF and LibTiff Mail List Archive

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2010.06.17 15:39 "[Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.17 16:21 "Re: [Tiff] libtiff 4 API/ABI stability?", by Edward Lam
2010.06.17 16:22 "Re: [Tiff] libtiff 4 API/ABI stability?", by Edward Lam
2010.06.17 16:38 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.17 22:06 "Re: [Tiff] libtiff 4 API/ABI stability?", by Edward Lam
2010.06.18 00:13 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.18 13:44 "Re: [Tiff] libtiff 4 API/ABI stability?", by Edward Lam
2010.06.17 16:28 "Re: [Tiff] libtiff 4 API/ABI stability?", by Bob Friesenhahn
2010.06.17 16:34 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.17 16:55 "Re: [Tiff] libtiff 4 API/ABI stability?", by Bob Friesenhahn
2010.06.17 17:15 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.17 18:04 "Re: [Tiff] libtiff 4 API/ABI stability?", by Olivier Paquet
2010.06.17 18:09 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.17 18:47 "Re: [Tiff] libtiff 4 API/ABI stability?", by Bob Friesenhahn
2010.06.17 19:35 "Re: [Tiff] libtiff 4 API/ABI stability?", by Olivier Paquet
2010.06.18 00:33 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.18 01:45 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.18 01:54 "Re: [Tiff] libtiff 4 API/ABI stability?", by Olivier Paquet
2010.06.18 02:00 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode
2010.06.18 13:32 "Re: [Tiff] libtiff 4 API/ABI stability?", by Edward Lam
2010.06.18 13:54 "Re: [Tiff] libtiff 4 API/ABI stability?", by Olivier Paquet
2010.06.18 02:36 "Re: [Tiff] libtiff 4 API/ABI stability?", by Bob Friesenhahn
2010.06.17 20:14 "Re: [Tiff] libtiff 4 API/ABI stability?", by Tom Lane
2010.06.17 20:35 "Re: [Tiff] libtiff 4 API/ABI stability?", by Bob Friesenhahn
2010.06.18 00:31 "Re: [Tiff] libtiff 4 API/ABI stability?", by Adam Goode

2010.06.17 18:04 "Re: [Tiff] libtiff 4 API/ABI stability?", by Olivier Paquet

On Thu, Jun 17, 2010 at 1:15 PM, Adam Goode <adam@spicenitz.org> wrote: >  1. libtiff API (but not TIFF structures) is usable from multiple >    threads at once.

[...]

I say we aim for #1. This is important, not just for multiple threads, but for multiple unrelated functions accessing libtiff from the same memory space. In my library that uses libtiff (OpenSlide), I have to avoid setting the error/warning callbacks in case the application has changed them. I would like to be able to set these in my code without interfering with the application's intent.

Agreed. In fact, #1 is probably already assumed by many users of the library. That's what we do anyway and it works out ok.

Also, for globals, there is also codec registration.

A quick grep also reveals:

  1. A few fields in tif_aux.c: TIFFVGetFieldDefaulted. These buffers could be put in the TIFF structure itself.
  2. A table in tif_luv.c: oog_encode(). In practice this can be fixed well enough without locks.

See my old mail for my idea: http://www.asmail.be/msg0054681986.html

Seems like a fairly good solution as far as the API is concerned. It solves both multithread issues and multiple user issues. Is there an entry in bugzilla to track all this?

Olivier